PART TWO LAST MONTH explained steps required design full-scale homebuilt aircraft also gave reasons believe -scale RC model design should built tested month design construction testing model will discussed MATERIAL AND HARDWARE SELECTION goal pick good quality readily available products would allow simulation assembly processes would use building full-scale aircraft model aircraft substructure chose use plywoodaircraft quality Lite Plyand balsa such critical areas wing spars landing gear wing folding joints used aluminum and/or 4130N steel depending strength requirements skinning aircraft used 0 10inch-thick ABS plastic should give good indication what will encounter skinning fullscale aircraft 016- 040-inch-thick aluminum sheet needed use adhesives could bond plywood balsa Styrofoam fiberglass steel aluminum ABS plastic Satellite City able meet requirements UFO Thin UFO Thick adhesives plus Hot Shot Kick-It accelerators instant bonding necessary UFO Thin worked well UFO Thick allows repositioning parts before adhesive sets especially important during skinning process feature appreciate about UFO doesnt give off irritating gas some CyA glues Du-Bro Products has complete line quality hardware items including scale wheels hinges control horns pushrods wheel collars blind nuts etc used Du-Bro hardware wherever possible pushrodl clevis assemblies coil spring locks used control surfaces ensure safe reliable connections ENGINE SELECTION different engine types sizes considered before made final selection objective ability swing 18 x 10 prop approximately 7000 rpm didnt want use gasoline fuel because its relatively dangerous handling characteristics considered methanol-burning engines several multicylinder engines could have done job initial cost prohibitive single-cylinder methanol-burning engines available OPS 30 Maxi Shamrock Competition Imports Inc offers best value Its powerful engine has good starting idling transition throttling characteristics Other appealing features muffler locations flexibility engines light weight converted leaf-blower engine specifically designed power model aircraft 15- 22pound range Although ringed engine manufacturer still recommends breaking about hour no problem meI always run engines quite familiarize myself ensure everything functioning properly before taking air 56 Model Aviation month previewed full-scale Snipe Now lets build model U James Gilgenbach selected Cool Power Tartan/Bully fuel specifically blended engine size type have excellent results Cool Power past application no exception Another benefit using Cool Power opposed factoryrecommended 5% castor oil 95% methanol added rust] corrosion protection wanted lightweight three-inch-diameter aluminum spinner would fit OPS 30 Maxi look good Tm-Turn TT-300B proved excellent selection modified TT-300B cutting slots fit 18 x 10 prop Tm-Turn has big scale spinner available doesnt require drilling backplate engine drive pins drilling tapping prop washer prop backplate two 6-32 bolts drilling tapping OPS 30 Maxi prop nut 10-32 spinner bolt modifications lock prop engine fashion similar used full-scale aircraft Both Zinger wood props Dynathrust composite props performed well props OPS 30 Maxi turned following rpm 18 x 6 18 x 8 18 x 10 18 x 8/14 20 x 8 Zinger 8100 rpm 7500 rpm 6800 rpm 6200 rpm 5800rpm 18 x 8 18 x 10 Dynathrust 7400 rpm 6700 rpm RADIO SELECTION Futaba 7UAP radio control system offers options required handle -scale Snipe options include following 1 Ailerons separate S148 servos aileron Y connector AEC 4 b Extensions AEC 11 2 Elevator 8134 -scale servo 3 Rudder S 134 -scale servo 4 Flaps S134 -scale servo 5 Throttle S148 servo 6 Elevator trim tab S148 servo 7 Airborne battery pack NR-4LB 1000 mAb Type 114-scaIe test model Wingspan 76 inches Recommended motor size type OPS 30 Maxi Number RC channels recommended Six Expected flying weight 25 pounds Type construction Built-up Type of covering finish recommended ABS plastic skin K&B Super Poxy May1993 57 crashcomponents shown prior assembly model can readily stripped down necessary shipping storage Models skin 010 ABS plastic ne cowl canopy hatch open just will fullscale aircraft allowing access instruments Full Size Plans AvailableSee Page 184 -- - LIQ 8 Charger FBC-6B4 programmable transmitter allows fine-tuning flight controls need modify mechanical linkages feature saved least 20 hours trialand-error testing also like built-in timer can used monitor long radio has discharging servos tight thus eliminating control drift need constantly change trim MODEL CONSTRUCTION SEQUENCE basic steps build model follows 1 Build skin horizontal vertical stabilizers elevator rudder 2 Build fuselage including console turtledeck top Build engine/nosewbeel mount 3 Make landing gear parts steel spar caps 4 Build center wing section 5 Build outer wing sectionsleave top spar cap loose 6 Assemble wing sections adjust dihedral 7 Make install flaps ailerons 8 Fit wing horizontal vertical stabilizers fuselage 9 Install engine muffler nose gear 10 Install aileron servos make hatches 11 Skin fuselage interior Make install turtledeck front fuselage top May1993 59 L Steel weights hold bottom fuselage side skin placeTwo 6-32 bolts two 2-56 bolts attach removable until UFO Thick sets up Fuselage longerons used keyempennage fuselage control surfaces use music wire alignment surfaceshinge pins easy assembly/disassembly bulkhead stiffens center section Futaba S148 servo mounted canopy frame has temporary cross fuselage Empennage control rods wing section actuate ailerons Most braces added until Plexiglas canopy cables run through center console wing ribs 18 Lite Ply glued screwed place I1__ __I eJKL F V K ~~o V r 1 K JK C- IF 7 3 F F MATE1AS 4_ EM E empennage fairing 12 Make fit cowl canopy 13 Skin remaining parts model 14 Install rest radio components balance model 15 Paint accessories add trim EMPENNAGE substructure empennage made balsa Lite Ply assembly can done using variety accepted tech niques chose drill holes through ribs use music wire rods alignment Although elevator has separate trim tab model does need normal RC flying empennage assembly attached fuselage two 6-32 bolts two 2-56 bolts can removed storage maintenance tips rudder elevator have lead added balance control surfaces covered white Super MonoKote glued control surfaces IJFO FUSELAGE fuselage built upside down plans top cowling turtledeck added later Overall alignment critical 60 Model Aviation ofoam glued cowl frame sanded shape cowl assembly removed fuselage fibergiassed six-ounce cloth Hobbypoxy Formula 2 lsa frame used locate cowl engine OPS 30 Maxi runs very coola streamlined cowl could have added around cylinder head order determine best skinning process started making empennage messed up skinning replacement vertical horizontal stabilizer substruc ture would traumatic wing substructure replacement OPS 30 Maxi excellent choice power Snipe pulls model Toothpick pins added elevator hinges due location beneath through maneuver effort models skin Trim tab prototype necessary normal flying uI 4\ w -J IV\ -\ May1993 61 producing good-flying aircraft have found several tools invaluable es tablishing alignment follows 1 Steel squaring blocks least three required 2 12-in combination square/level 3 6-in machinists scale 4 72-in straightedge/scale 5 16-in x 24-in carpenters square 6 Incidence meter 7 Wing horizontal stabilizer airfoil tem plates 1/s-in plywood coated UFO Thin 8 Flat work table 2 ft x 5 ft minimum 9 0-clamps 10 T-pins 11 Masking tape 12 Alignment/building fixtures gauges Explaining use tools could consume enough pages 62 Model Aviation * Vertical stabilizer rudder built simple fixture holds wing place Root ribs stiffened 1/16-in balsa directly over plans Rudder post during skinning operation skin sheeting Spar caps 025 4130N steel features full-length music wire pin gives wing much its rigidity laminated between 1/ie ply 1/i6 balsa wing skin attached leading edge contact Completed skin looks beautiful fixture eliminates wing twist cement prevent cracking over period time UFO adheres skin misalignment Wings have degree washout skin balance structure built Continued page 123 original torsion bar nosewheel Without skin Snipes structure very flimsy just like its full-scale allowed nose dip too much high brothers text contains complete skinning instructions grass fields plans show fixed gear 24 N NIPE Snipe/Gilgenbach Continued page 62 separate article will detail use However several rules thumb should followed concerning alignment First never check alignment dimension once Check over several times preferably several different ways Second dont get engrossed details forget basics example making two left wings Third eyeball alignments look wrong probably Fourth add temporary braces structures flimsy until structures covered skinned fuselage main structure alignments set top longerons should used starting point alignments Wing dihedral incidence well horizontal stabilizer incidence parallelism should set reference longerons LANDING GEAR debated whether present details scale landing gear article drawings full-scale gear will use torsion bars hydraulic shock absorbers intent minimize weight full-scale gear yet still provide good shockabsorbing qualities different approaches can taken meet criteria want learn book Landing Gear Design Light Aircraft L Pazmany excellent source concluded gear far too complex anyone just wants goodflying less-than-exact-scale model took several hundred hours design machine parts milling/drilling machine metal lathe went through exercise because needed develop knowledge build fullscale aircraft gear recommend model referred Wittman-type gear because Steve Wittman originally developed full-scale aircraft aircraft use expensive high-alloy steel gear legs Continued page 126 May1993 123 original landing gear somewhat complex intended simulate full-scale gear much-simplified Wittman-type gear design made 1/4-inch-diameter music wire shown plans swivel joint machined allow prototypes wings fold Wing pins #6 tapered complex feature shown plansremovable panels have substituted OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLAYBOY SR KIT 112A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $330 STOCK ORDERS SHIPPED WITHIN 24 HRS W Composites fiberglass experts video shows descnbes easy use composites construct basic lamination 1993 catalog included $5-off coupon towards first order Approximately 60 minutes Only $2495 plus $450 shipping handlingi Z e Glast Developments Corporalion 800 821-3283 SnipelGilgenbach Continued page 123 modelers have material available strong yet less expensive music wire truly amazing steel Most model aircraft use gear type because simple durable WING models wing made simulate folding feature full-scale aircraft practical standpoint however normal model would need removable wing panels what Ive shown plans prototype model used #6 tapered pins hold wing sections together feature required some difficult machining plans show hex-head cap screw nylon-insert locknut unusual feature wing design use 025-in-thick x 75-inwide 4130N steel wing spar caps wing designed handle 9OG 45G ultimate loadsthe loads structural failure occurs full-scale aircraft would exceed loads 6OG 3OG under normal aerobatic conditions model haphazard flying tech niques possible attain much higher loads Therefore prudence must exercised flying model Wing construction simplified through use wing fixture notched front rear spar webs building sequence follows 1 Make wing fixture using miscellaneous pieces lumber have around workshop Make spars ribs 2 Cut 14 steel spar caps six long eight short length radius ends drill mounting lightening holes deburr sand 3 Cut out A6 x 3/4 plywood Aa x 3/4 balsa spar caps glue steel caps outer wing panels using UFO Thick 4 Cut out notch plywood spar webs Make sure webs fit snugly wing fixture 5 Using UFO Thick glue boltom outer front wing spar caps wing webs 6 Clamp outer wing panel front spar assemblies fixture position rear spar web ribs fixture 7 Align ribs glue spar webs Note glue top front spar cap yet 8 Glue leading edge front ribs 9 Glue rear plywood spar caps ribs rear spar web remove assembly fixture 10 Screw bottom outer main spar caps wing web block 11 Repeat operations 6 through 10 other outer wing panel 12 Glue 1/16 x 3/4 plywood balsa spar caps center wing steel spar cap 13 Glue plywood front spar web center bottom front spar cap assembly 14 Clamp assembly fixture position rear spar web ribs fixture 15 Align ribs vertically using square glue spar webs glue two end ribs lime 16 Glue top front spar cap ribs spar web 17 Glue leading edge two rear plywood spar caps ribs rear spar web Remove assembly fixture 18 Screw spar caps wing web block 19 Glue four wing-locating dowels place outer wing panels 20 Assemble outer wing panels center wing panel adjust dihedral angles sliding top wing spar caps outer panels 21 Clamp two end ribs center wing section two end ribs outer wing sections 020-in-thick shims between ribs shims thickness two pieces 010 ABS plastic 22 Glue top outer wing spar caps center section outer ribs place 23 Screw top outer wing spar caps wing web blocks 24 Shape sand leading edges three wing panels match ailerons flaps can built over plans flat surface intercon necting flap swivel tubes should aligned glued swivel joint installed flap sections aligned wing retracted position Note control surfaces use music wire through hinges easy assembly disassembly models wing tips made balsa plywood bolted outer wing rib two 6-32 socket-head cap screws could also glued place intend try several different wing tip types deter give best stall characteristics CANOPY canopy made heating stretch ing 040-in Plexiglas over plug follows 1 Make plug wood coat epoxy 2 Sand epoxy smooth texture surface will transfer directly inside canopy formed 3 Attach handles two sides Plexi glas sheet 4 Heat sheet plug oven until Plexiglas starts sag 5 Remove both oven stretch Plexiglas over plug repeated process several times get final shape 6 Make canopy frame 7 Trim attach canopy frame using UFO #1 flat-head wood screws COWL AND WHEEL PANTS Make cowl following sequence 1 Cut out plywood cowl framework 126 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPS! PROMPT SHIPMENT ON VISAdMC SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 2 Glue framework several Styrofoam blocks 3 Cut sand Styrofoam shape 4 Cover assembly layer six-oz fiberglass cloth used Hobbypoxy Formula 2 bond fill cloth 5 After epoxy hardwait least daytrim off excess fiberglass sand rough edges high points apply heavy coat Hobbypoxy mixed 50/50 microballoons 6 Wait least day rough sand outer surface shape 7 Split cowl hollow out Styro foam leave 3A-in-thick Styrofoam wall inside half 8 Sand Styrofoam wail smooth apply layer six-oz fiberglass inside half 9 Wait another day trim sand excess fiberglass Add hinges holddown latches hinges T-pins 10 Reassemble two halves finish sanding cowl halves exceptionally rigid assure good fit attached cowl fuselage matchsanded Remember compensate 0l0-in-thick ABS fuselage skin wheel pants can made forming Styrofoam plug covering two layers six-oz fiberglass coating fiberglass 50/50 epoxy/microballoon mix sanding shape hollowing out Styrofoam SKINNING PAINT AND TRIM Sand contour stabilizer smooth Remove dust loose particles Cut out 010-in ABS plastic skin slighfly larger area covered Cut skin wrap around leading edge allow enough stock overlap leading edge control surface stabilizers trailing edge Place skin onto hot approximately lOOT flat surface tape down end used wifes glass-topped dining room table space heater underside glass necessary skin will tight normal room temperature Run bead UFO Thick trailing edge ribs up leading edge top side horizontal stabilizer Start ing top gives better chance spot misalignment skin best part skinning job visible can start either side vertical stabilizer Press trailing edge onto skin leaving h-in overhang Roll stabilizer skin toward leading edge pulling stabilizer toward yourself keep skin taut Remember taped opposite edge glass table Hold pressure assembly about minute UFO sets Remove assembly table apply UFO Thick leading edge top front bottom Tape skin table again roll skin around leading edge making sure skin tight Hold pressure assembly about minute Remove assembly table skin should now glued tightly around leading edge Now apply UFO Thick ribs trailing edge remaining side Tape edge skin table roll stabilizer onto skin Hold pressure assembly about minute Remove structure table trim edges sharp knife sanding block structure cools should stiff tight skin exposed rib sides can covered ABS plastic paint commercially available heat-shrinkable plastic covering may used skin folded trailing edges elevator rudder yields goodlooking straight trailing edges Folding ABS plastic can present problem however following technique should used 1 Build sand control surface Remove loose particles 2 Cut ABS skin slightly larger required 3 Lay thin 025-in steel straightedge onto skin fold line weight clamp down end 4 hard pencil draw trailing edge fold line Push down hard pencil plastic scored scratched 5 Fold skin over straightedge creating 1800 bend 6 Remove straightedge fold skin flat fold line should now straight 7 Tape top side skin heated glass table 8 Apply UFO Thick top side control surface substructure 9 Position substructure onto skin Press roll attach skin Hold pressure assembly about minute 10 Remove assembly table apply UFO Thick opposite side substructure 11 Repeat operation 9 opposite side 12 Trim off excess skin rudder rolled skin halfway around leading edge side elevator covered leading edge separately wing panels subsequently skinned using same procedure horizontal stabilizer ailerons flaps skinned using same procedure elevator fuselage sides skinned first turtledeck finally bottom using basically same techniquesplacing skin warm worktable applying UFO Thick structure pressing rolling structure skin Through trial error Ive learned several interesting things working 010 ABS plastic accidentally spill epoxy plastic denatured alcohol will remove epoxy damaging plastic Once P-40 WARHA WK Made USA SPECIFICATIONS WINGSPAN 60 ENGINE SUE60 2-EEROKE WEIGIfT7-8 LBS IIV7RO PRiCE$16000 ALL KITS FEATURE BAND LAID FIBERGLASS FUSEIAGEPANEL UNES SCALE DETAILSFOAM CORE WINGS MACHINE CITE FORMERS & BULKHEADS SEE YOUR LOCAL DEALER OR CALL HOBBY IL4NGAR 606-2&3-5 746 FOR IMMEDIATE DEUVERY DE4LER INQUIRIES WELCOME WEACCEPT VISA MASTERCARD & DISCOVER CARDS WEGLADLYSHIP COD SHIPPING 114 NDUNG $309 PER KIT CONTINENTAL USA OilIER AREAS CALL KE VCKY RESIDENIS ADD 6% SALES TAX HOBBY HANGAR ISA FULL SERVICE HOBBY SHOP WITH OVER 11000 ITEMS IN STOCI CATALOGS VAILABLE $400 EACH WIREBATE ON FIRST ORDER SPECIITE PIANEHELICOPTER OR CAR HANGAR EXaUCSIVEDISTRWTCW FIBER SCALE MODELS 153 LLOYD AVE R2VDW KY 41042 606-283-5746 IYW 606-2853889 FAX May1993 127 FOCKE WULF 190 Made USA SPECIFICATIONS WINGSPAN 65 ENGINE SIZE6090 2-SISOKE 90-120 4-SEROKE WEIGIIr9-10 LBS IPTERO PRICE SPECIFICATIONS WINGSPAN 60 ENGINE SIZE WEIGhT 60 2-SIROKE 8-ES LBS CESSNA 150Made USA SPEClFICATIONS WINGSPAN 65 ENGINE SUE WEIGHT 45-60 2-SEROKE 7-75 LBS QUALIT WTEGITY SRV1CE QJLALTr INTEGUTY SiR VICE QJJALIrY INTEGRITY SERVICE 5~ tJ uJ GRTYSER VICE 3950-AValIeyBIvd WALNUT CA 91789 Li w A T PE RR 0 0 F ci C S T FA R N ED EI N G U 01 O0 0 IIEAm OOD Jo C PLME 0' U SHADE 51g-i5 ni CALL OR WRITE FOR FREE BROCHURE Pitts-Style Mufflers UNIVERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2185 SI-SI IT-GOP $2385 MOKI 61 JT-MK61P 52595 UNIVERSAL 9OlT ON Side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts supplied muffler JT-40P8 29-45 $2285 JT-A91PASP 1002995 JT-F74PFOX 742995 JT-M100PMAXOl-lOS2995 JT-BGXPMAX BGXI3495 JT-5T69PST 61-75-902995 JT-ST25PST 25-30002995 JT-MK150PMOKI 153495 JT JT-W12OPWEBRA 1202995 5161 ZJTECI MAIL ORDER se add $255 UPS shippIng Check MO Visa MC COO accepted Add $400 extra COD California residents add 8% sales tax 255 Eat Alillorld/FO 8xx727/Sodo Springs dubs 82276 ULTIMATESPORT RC UlTIMATE 5-305 Mlii12085473742F F,nh5ed 5555 epoxy sets will have lot trouble removing may have sand off Removing UFO ABS plastic tricky Put small amount Zap Z-7 Debonder onto clean rag lightly wipe over UFO rub too hard too long Z-7 will cut plastic dull surface Z-7 can bring back shine Turtle Wax white automotive polishing compound Sooner later will scratch ABS skin occurs scratches can removed sanding 1200-grit wet-ordry sandpaper rubbing polishing compound sanding rubbing skin dont push too hard skin may crack attached structure plastic can shrunk using heat gun also very easy melt will shrink enough force warp substructure dont recommend heatshrinking minimize wrinlding sunlight plastic should preheated before installation K&B thinner cuts ABS plastic K&B epoxy sticks well especially thinned Conversely dont use K&B thinner cleanupuse denatured alcohol miscellaneous parts painted K&B primer K&B Super Poxy parts made plywood balsa spruce steel aluminum brass epoxy fiberglass resin ABS plastic Ive never found paint sands holds up better K&B worked equally well over materials order save weight time chose paint entire aircraft However did sand polish skin blemishes scratches used Jumbo Stripe Kit Eagle Products trim model decals easy install durable look good Eagle Products offers several different color schemes can individualize aircraft Personally like fluorescent pink/blue/purple combination TESTINGAT HOME Before taking new model flying field several things should always done First check center gravity CG should between 23% 27% wing chord first few flights flown CG 28% would recommend adding weight nose necessary get CG 25% wing chord engine should test run aircraft set up different attitudes eg nose up nose down inverted uprightto check run consistency radio equipment should actively cycled hour recharged cycled again hour test will also reveal control surface/linkage hang-ups radio must range-checked both engine running stopped Dont forget tie down plane Continued page 174 128 Model Aviation uSt extensions worm drive mounting strap Included MGLASS ALES INC W Fiberglass Headquarters * BUY DIRECT * Super Bond S mit Epony Epoxy Lsminxting Resins Cyanoacrylate Adhesives Glones ective Hand Creams Masits ns Polyester Resin al SprayerLaminating Bnsshes ers Acetate Fiberglass Fiilers Tongue Depressom Mioing Paddles sive Discs Sandpaper Foam Brushes Fine-Weave Median Heaxy Weight cloth ar on Fibers TECHNICAL INFORMATION Kenlar Tap. snarbon fib, tap. CALITOLL FREE earbon tiber tand available IMI WI ors ul 1-800-589-4444 18621 8 Nne MileRoad EastpointuMichigsn48O2l 313 777-2032Fax 313 7770350 Foao Flnis 5da, AI~ Lon4g Osar clerr Conopy Aailabl e,iIde KjI S255~ shasred Kr S5u5~Olna Sheered KI SUSS Over 70 Kits Fox Engines best prices FREE CATALOG DoCs Generix Controline P0 BOX 111 Jasonville IN 47438 Tel 812-665-3723 WORLDS LARGEST SCALE PLANS & DOCUMENTATN SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS ze 120 PAGE CATALOG 55 00 USA & CANADA StOQO AIR OVERSEAS Jim Pepmnos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE NSBORO NC 27403 292-5239 WORLDSMOSPAOTNEMTI MOD PLANSALL PATTERNS INCLUDED SCALEOFPL&NS*-DSFOPOP OP RSABBBEVIATED NAME 1/SASZ 1/L6SZ 1/B SE 1/6 SZ 1/4SZ 37 OeHov Cootec Rone 22320 324332 66344 132068 40 Vooght Cone P45 20320 30326 60345 15 Con JN4S Jenny 21318 32324 65$38 86 352 27 Llodbeoge 80211 15314 34 324 69334 91348 29 Wano TaperWing I5314 22 $20 45334 6034850362 36 Weatlod Lynanden 25319 37 324 75338 OA 2 35 Soog 046A Obon 23324 34332 68346 29 Boeing 100 Spont 15316 224324 453361603 nin Tninoton 30330 43338 90 6212037 39 LoOk Licknog P 39 Gee P38AFlghEn 184315 28 20 56334 I 2 25 VgE CoeD 0281/4 08320 27 28 38 Con CoElna PBY5o 52 48 78 60S04I~1A 19 Coctien NC4 624366 94089 17 Fekken 57 Ftc 14312 21316 8 o4349 31 Baylen GeeBee 114312 17314 35332T4344 75356 13 Sepenolanlon 068 15310 44432616038 8952 36 GroIn GolOhank 144314 214388 43$38 SCALE PLAN 35 Look Electra #11 27325 60332 55338 Look Slow 34 43 GroIn nengen TRE 30328 40 338 803 2 Fond 3M 4AT6 42 Roe B17G FlyFoct 51345 77 35 Roe 8170 36 38 NA MItohell 825 364337 55352 NA 525 36 34 MnoolCato088C72 154315 23322 454335 MeG N 826 6 37 Con Navy 003C1 19318 284324 57336 lEOn Tnt 4 25 CRaoen R3C-1 &2 11 315 164320 3 3 Nod1yPo e 6 34 Doog Tonoep SC3 47340 71 350oo 6 33 ConE Hawk P6E 154315 234322 47 4 32 Doolittle GB#11 124317 184322 37e335 49 46 74338 31 Bee P48344 P12B 15316 224320 444332 394 44 B9358 32 Spefld BollDog 134316 20320 40e332 53580358 32 Howard Ske&SBlke 104312 154315 31326 62345 34 Tocoeca 800cc 13312 194316 39 328 5- 340 78352 35 Now Molligan 16 315 234320 47332 64 44 94 56 33 Boa P26A Low Hog 14315 21 320 42332 63 45 84 58 35 Stlneen TSI SR7 204316 314325 42 58 Mooqolte Book 374324 41335 B1350408e365 37 Steceseen PTi16 318 244322 49 39 43 N Bik Widow P61 33340 494350 99 75 30 TAOES Nwke Ten13 144383 214318 43 36 86 42 CHelldive 5B2C4 25325 374335 26 Fond Teimote 4AT 38338 57 348 31 Ballano AlE Ron 32 322 48 330 96 52 33 Gnome J2F look194S28 29 340 58355 N 36N 27 CSeakawk F7C1 154318 234324 47338 6J35Q94e 83 28 SIk AopkLk S38 36$34 543424082B042U 16 8Pge 0-400 Rosob 55345 75956 31 Liedys LSinloe 21316 314322 B 336 31 Howard BaoPete 10312 15315 30330 0342 31 C Spackuk F9C2 124315 19322 38332 5543 8176358 33 Aceonca 13 Opt 18310 27314 534326 48 38 Toenone peeco Op 124316 184320 37336 rIght Ellen204318 304324 604838 5 AD BEPOBE ORDERING* 3/6 SCALE 1732 NILEI MT EESAIM 08088315 00PLANS AVAILABLE AT ONI 80 SURE TO ASS THE 120U GOLLAIT UNOER1I24 SIZE AL 1O7 FOR PACKAGINGIi IESFORA1L DESIGN POSTAGE ANS INOOSANCE ABOUT THOUSAND ADGITI4 PLINS MANY SIZES 75 CATALOG 3200 58 SS LIST ALONE 31. 55 AIR FOBEIGS 33 eveana e uppy 0 Edeerd 0 PeckedOnIaIiolS Nest FrIondSleoS IRIS".eP"P" 9800B BETNOI ANEN EEl LIONS 810 4 552O 5000 Snipe/Gilgenbach Continued page 128 aircraft should taxied familiarize yourself its groundhandling characteristics After running engine cycling radio taxiing check linkage connec tors nuts bolts tightness find loose components dont just retighten determine loosened take corrective action such gluing using Loctite PREFLIGHT Once became familiar operating characteristics aircraft confident everything functioning properly ready take long lonely drive flying field new model recommend following Dont go flying field day will crowded Dont take lot friends Arrange have just two helpersan experienced model builderlpilot good camcorder operator Videotape entire flying session includ aig preflight weather adverse cancel wait another day Conduct preflight inspection Check linkages connectors inspect control surfaces direction travel amount throw run engine different attitudes range-check radio FLIGHT PLAN developed flight plan would know exactly what intended would have contingencies something went wrong flight plan steps 1 Take off northwest wind flying field went has approximately 1/ mile grass direction engine died takeoff could land wind attempting tarn 2 At approximately 200 feet altitude 200 yards distance perform 180 right-hand turn 3 Climb 300 feet fly 400 yards southeast 4 Perform left-hand procedure turn 5 Fly 400 yards northwest trim controls perform right-hand procedure turn 6 Fly 400 yards southeast 7 Repeat steps 4 through 6 several times trying both high low rates elevator ailerons verbally noting control response helper video camera 8 Test flight characteristics aircraft flaps down 9 Enter right-hand landing pattern land aircraft flaps down possible After first flight inspected linkages nuts bolts connectorsnothing fallen off prototype proved quite stable too responsive controls low rate interesting activating flaps produced no pitching tendency 25 flaps engine idle landing relatively slow considering fueled aircraft weighed 25 pounds second flight explored aircrafts aerobatic characteristics surprise performed very much like pattern ship landing flaps disastrous however model caught wing tip damaging left wing nose gear After second flight checked model cleaned folded wings packed up went home review videotape video recording proved invaluable project guess thats have flight recorders airliners video showed second landing flared too soon too much causing right wing drop slighfly overcorrected models left wing hit ground After further analysis causes obvious still too much elevator aileron throw CG 28% flying skills rusty subsequent days checked out stall spin characteristics different weights CG locations TEST RESULTS 1 model flies well CG 25% 2 drooped wing tips stall DC Flight Training Beginner advanced tailored individual long-time modeler full size airplane flight instruc tor will make progress fun easy during week stay beautiful far western North Carolina Write call information RC Flight Training Rm 1704 38949GB 174 Model Aviation scale kits engines accessories want &you want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HES 1387 N Military Trail West Palm Beach FL 3340 407-68841669 HOBBY SUPER IUKL straight no tendency snap roll drop wing tip 3 slow ground speeds difficult turn model steerable nose wheel individual main gear brakes 4 ABS skin does vibrate excessively regardless engine rpm 5 Theoretically model should fly well 34 pounds hut have yet test theory 6 Elevator trim changes required flaps activated 7 Landings docile 200 400 flaps Forty degrees flap quickly slows plane greatly increases rate descent 8 No control flutter encountered 9 aircraft will spin CG less 20% full control travel CONCLUSIONS project would have successful help encouragement individuals organizations strongly recommend modelers patronize manufacturers distributors mentioned article Further wish thank flight assistantsGus Rebensburg Jerry Reichow Duncan Stewartfor time effort Based test results am now con fident feasible develop full-scale Snipe As am detail-designing big Snipe will continue use -scale model test different features building techniques cant wait get started bending tin summer 1998 Ill let know full-scale aircraft flies leads final question build full-scale model prototype -scale aircraft can enter sanctioned AMA scale contest lope SoaringlByors Continued page 106 required servo fact typical microservo will extend retract landing gear well open landing gear doors Gene has also designed over-center system retractable landing gear landing no force transmitted servo might strip servos gears over-center system also works retracted mode wheels inertia cannot throw gear out open ruggedness retract system surprising Gene has tested gear design doing push-ups install gear builder custom-fits fuselage between two bulkheads installation method serves two purposes First bulkhead mounting provides very rugged attachment inside fuselage gear cannot broken loose landing impact mounting system lets builder adjust depth wheel extension through fuselage Now meticulous scale builder want best retractable gear money can buy Cope retract probably worth considering Gene offers retract two sizes has -scale version currenfly priced $125 Cope also offers supersize -scale retract will handle really big birds tells sometime not-too-distant future will offering -scale model too Cope Retracts can contacted 32031/2 Main St Union Gap WA 98903 telephone number 509 457-9017 modelers friends contacted during month Mr Darrel Johnson Mesa Arizona suggested discuss balance models Well perfectly honest sometimes just mount model atop left right index fingers quick dirty Other times ever procedure bit exacting use balance stand balance stand simple device can built just few minutes aid good old Hot Stuff similar product stand built -inch plywood other plywood approximately size drawing outlines construction shows supporting fillets keep stand breaking large load applied drawing also details round edge stand upon model placed reason use stand quite obvious want obtain balance point model accurately possible stand much easier Using fingers balance model turns procedure somewhat juggling act However can place model stand make weight VIDEO_____ JOY OF FLYING FREE very informative 42 minute VHS video displaying phenomena free flight its variations great PR video can used effectively educate uninitiated art model aviation video professionally produced National Free Flight Society features both indoor outdoor activity available NIFFS 1655 Revere Drive Brookfield WI 53045 * Include Check $2500 plus $300 P&H per tape Buy 4 VgPEOS FREE #17 92 SCALEMASTER CHAMPS STAR MUS PIMA AIR MUS ALABAMA 2 Hrn.$1995 #16 AIRCRAFT GUNTERSYILLE AL AVAL AIR MUS PENSACOLA FL 2 Hn.51996 #1 592 WORLD SCALE CHAMPSAMA INVTL SHOOTOUT W INTL SCALEMASTERS 2 Hn.$1995 #1492 NW SEAPLANE CHAMPS EN SCALE AVIATION IN AUSTRALIA2 Hm.$1995 3 op Gun Invitari oledo Model topo s Air Museum2 Nra. 51996 #12- 91 Scalemasters tao Vegas 91 DSAA Las Vegas 91 NWlntl2 Hre.$1916 C #11 Scalemaster Aircraft Preview Mfg Visdw1tlan Parsons- 91 NWteaplanethamps 2 Kn.S1996 Z#1O 91 Tup Gun W Palm Bch Fl SsA Lao Vegas W Model topu2 Iin.$1996 90 Scalemasters Champs Irving TX hidbey 101 Scalemos5ers an Diego Aerospace Moo 2 Hra.51996 90 NW Intl Scalemasters Farragot Park-Athol ID m Champlin Fighter Museum w/tou Proctor W Seaplane ps Santa Monica Mos Flying 2 Mn. 51995 #7 op Gun Invitational Mesa AZ W Model Eupo2 Hrs.$1995 #6 89 Scalemasters Champs St Louis ake lianaso m Schneider Cop Races2 IIrs.$19gG 89 US NaIls Scale & Seaplanes 89 NW Seaplane Champs Planes Fame taut Moo Moo DshkoshVisit mw/Ralph Beck Chicago Mo Sci & Ind 2 Hs.$1995 #4 09 Top Gon Champo Coral Springs FL tor Albatroo DVA Preview atIs Seaplane Site NW ntl oScalemasters tor N-li Test Flight 2 Hre.S1I96 IA Special Edition Proctor Enterprises Atbatroo OVA Brief Conotr Engine Radio Irrntall& Teat Ftigbto 2 Hra $1996 Cuetias JN4D Jenny Plan FUN SCALE 109 inches 1804 sq 11 lbs 8 sheets w/instroctions 51996 10807 SE STACY CT PORTLAND OR 97266 PHONE 503653-25780 FAX 503 6781342 SEND STAMP FOR COMPLETE LIST PAL & SECAM ORDERS CONCEPTS 17 MILPERA CRESCENT WANTIRNA VIC 3152 AUSTRALIA e 03801-3899 03887-3472 BETA CARLSON ENGINE IMPORTS 814 East Marconi Phoenix AZ 85022-3112 IMPORTED DIESEL ENGINES Worlds Best Selection AE AM Aurora Cipolla D-C KMD MAP Mikro MK MWS Oliver PAW Pfeffer Silver Swallow USE Also Replica Mills MOVO Letmo diesels rare imported glow engines CO motor sets Ten page catalog 1 00 May1993 175
Edition: Model Aviation - 1993/05
Page Numbers: 56, 57, 59, 60, 61, 62, 123, 126, 127, 128, 174, 175
Edition: Model Aviation - 1993/05
Page Numbers: 56, 57, 59, 60, 61, 62, 123, 126, 127, 128, 174, 175
PART TWO LAST MONTH explained steps required design full-scale homebuilt aircraft also gave reasons believe -scale RC model design should built tested month design construction testing model will discussed MATERIAL AND HARDWARE SELECTION goal pick good quality readily available products would allow simulation assembly processes would use building full-scale aircraft model aircraft substructure chose use plywoodaircraft quality Lite Plyand balsa such critical areas wing spars landing gear wing folding joints used aluminum and/or 4130N steel depending strength requirements skinning aircraft used 0 10inch-thick ABS plastic should give good indication what will encounter skinning fullscale aircraft 016- 040-inch-thick aluminum sheet needed use adhesives could bond plywood balsa Styrofoam fiberglass steel aluminum ABS plastic Satellite City able meet requirements UFO Thin UFO Thick adhesives plus Hot Shot Kick-It accelerators instant bonding necessary UFO Thin worked well UFO Thick allows repositioning parts before adhesive sets especially important during skinning process feature appreciate about UFO doesnt give off irritating gas some CyA glues Du-Bro Products has complete line quality hardware items including scale wheels hinges control horns pushrods wheel collars blind nuts etc used Du-Bro hardware wherever possible pushrodl clevis assemblies coil spring locks used control surfaces ensure safe reliable connections ENGINE SELECTION different engine types sizes considered before made final selection objective ability swing 18 x 10 prop approximately 7000 rpm didnt want use gasoline fuel because its relatively dangerous handling characteristics considered methanol-burning engines several multicylinder engines could have done job initial cost prohibitive single-cylinder methanol-burning engines available OPS 30 Maxi Shamrock Competition Imports Inc offers best value Its powerful engine has good starting idling transition throttling characteristics Other appealing features muffler locations flexibility engines light weight converted leaf-blower engine specifically designed power model aircraft 15- 22pound range Although ringed engine manufacturer still recommends breaking about hour no problem meI always run engines quite familiarize myself ensure everything functioning properly before taking air 56 Model Aviation month previewed full-scale Snipe Now lets build model U James Gilgenbach selected Cool Power Tartan/Bully fuel specifically blended engine size type have excellent results Cool Power past application no exception Another benefit using Cool Power opposed factoryrecommended 5% castor oil 95% methanol added rust] corrosion protection wanted lightweight three-inch-diameter aluminum spinner would fit OPS 30 Maxi look good Tm-Turn TT-300B proved excellent selection modified TT-300B cutting slots fit 18 x 10 prop Tm-Turn has big scale spinner available doesnt require drilling backplate engine drive pins drilling tapping prop washer prop backplate two 6-32 bolts drilling tapping OPS 30 Maxi prop nut 10-32 spinner bolt modifications lock prop engine fashion similar used full-scale aircraft Both Zinger wood props Dynathrust composite props performed well props OPS 30 Maxi turned following rpm 18 x 6 18 x 8 18 x 10 18 x 8/14 20 x 8 Zinger 8100 rpm 7500 rpm 6800 rpm 6200 rpm 5800rpm 18 x 8 18 x 10 Dynathrust 7400 rpm 6700 rpm RADIO SELECTION Futaba 7UAP radio control system offers options required handle -scale Snipe options include following 1 Ailerons separate S148 servos aileron Y connector AEC 4 b Extensions AEC 11 2 Elevator 8134 -scale servo 3 Rudder S 134 -scale servo 4 Flaps S134 -scale servo 5 Throttle S148 servo 6 Elevator trim tab S148 servo 7 Airborne battery pack NR-4LB 1000 mAb Type 114-scaIe test model Wingspan 76 inches Recommended motor size type OPS 30 Maxi Number RC channels recommended Six Expected flying weight 25 pounds Type construction Built-up Type of covering finish recommended ABS plastic skin K&B Super Poxy May1993 57 crashcomponents shown prior assembly model can readily stripped down necessary shipping storage Models skin 010 ABS plastic ne cowl canopy hatch open just will fullscale aircraft allowing access instruments Full Size Plans AvailableSee Page 184 -- - LIQ 8 Charger FBC-6B4 programmable transmitter allows fine-tuning flight controls need modify mechanical linkages feature saved least 20 hours trialand-error testing also like built-in timer can used monitor long radio has discharging servos tight thus eliminating control drift need constantly change trim MODEL CONSTRUCTION SEQUENCE basic steps build model follows 1 Build skin horizontal vertical stabilizers elevator rudder 2 Build fuselage including console turtledeck top Build engine/nosewbeel mount 3 Make landing gear parts steel spar caps 4 Build center wing section 5 Build outer wing sectionsleave top spar cap loose 6 Assemble wing sections adjust dihedral 7 Make install flaps ailerons 8 Fit wing horizontal vertical stabilizers fuselage 9 Install engine muffler nose gear 10 Install aileron servos make hatches 11 Skin fuselage interior Make install turtledeck front fuselage top May1993 59 L Steel weights hold bottom fuselage side skin placeTwo 6-32 bolts two 2-56 bolts attach removable until UFO Thick sets up Fuselage longerons used keyempennage fuselage control surfaces use music wire alignment surfaceshinge pins easy assembly/disassembly bulkhead stiffens center section Futaba S148 servo mounted canopy frame has temporary cross fuselage Empennage control rods wing section actuate ailerons Most braces added until Plexiglas canopy cables run through center console wing ribs 18 Lite Ply glued screwed place I1__ __I eJKL F V K ~~o V r 1 K JK C- IF 7 3 F F MATE1AS 4_ EM E empennage fairing 12 Make fit cowl canopy 13 Skin remaining parts model 14 Install rest radio components balance model 15 Paint accessories add trim EMPENNAGE substructure empennage made balsa Lite Ply assembly can done using variety accepted tech niques chose drill holes through ribs use music wire rods alignment Although elevator has separate trim tab model does need normal RC flying empennage assembly attached fuselage two 6-32 bolts two 2-56 bolts can removed storage maintenance tips rudder elevator have lead added balance control surfaces covered white Super MonoKote glued control surfaces IJFO FUSELAGE fuselage built upside down plans top cowling turtledeck added later Overall alignment critical 60 Model Aviation ofoam glued cowl frame sanded shape cowl assembly removed fuselage fibergiassed six-ounce cloth Hobbypoxy Formula 2 lsa frame used locate cowl engine OPS 30 Maxi runs very coola streamlined cowl could have added around cylinder head order determine best skinning process started making empennage messed up skinning replacement vertical horizontal stabilizer substruc ture would traumatic wing substructure replacement OPS 30 Maxi excellent choice power Snipe pulls model Toothpick pins added elevator hinges due location beneath through maneuver effort models skin Trim tab prototype necessary normal flying uI 4\ w -J IV\ -\ May1993 61 producing good-flying aircraft have found several tools invaluable es tablishing alignment follows 1 Steel squaring blocks least three required 2 12-in combination square/level 3 6-in machinists scale 4 72-in straightedge/scale 5 16-in x 24-in carpenters square 6 Incidence meter 7 Wing horizontal stabilizer airfoil tem plates 1/s-in plywood coated UFO Thin 8 Flat work table 2 ft x 5 ft minimum 9 0-clamps 10 T-pins 11 Masking tape 12 Alignment/building fixtures gauges Explaining use tools could consume enough pages 62 Model Aviation * Vertical stabilizer rudder built simple fixture holds wing place Root ribs stiffened 1/16-in balsa directly over plans Rudder post during skinning operation skin sheeting Spar caps 025 4130N steel features full-length music wire pin gives wing much its rigidity laminated between 1/ie ply 1/i6 balsa wing skin attached leading edge contact Completed skin looks beautiful fixture eliminates wing twist cement prevent cracking over period time UFO adheres skin misalignment Wings have degree washout skin balance structure built Continued page 123 original torsion bar nosewheel Without skin Snipes structure very flimsy just like its full-scale allowed nose dip too much high brothers text contains complete skinning instructions grass fields plans show fixed gear 24 N NIPE Snipe/Gilgenbach Continued page 62 separate article will detail use However several rules thumb should followed concerning alignment First never check alignment dimension once Check over several times preferably several different ways Second dont get engrossed details forget basics example making two left wings Third eyeball alignments look wrong probably Fourth add temporary braces structures flimsy until structures covered skinned fuselage main structure alignments set top longerons should used starting point alignments Wing dihedral incidence well horizontal stabilizer incidence parallelism should set reference longerons LANDING GEAR debated whether present details scale landing gear article drawings full-scale gear will use torsion bars hydraulic shock absorbers intent minimize weight full-scale gear yet still provide good shockabsorbing qualities different approaches can taken meet criteria want learn book Landing Gear Design Light Aircraft L Pazmany excellent source concluded gear far too complex anyone just wants goodflying less-than-exact-scale model took several hundred hours design machine parts milling/drilling machine metal lathe went through exercise because needed develop knowledge build fullscale aircraft gear recommend model referred Wittman-type gear because Steve Wittman originally developed full-scale aircraft aircraft use expensive high-alloy steel gear legs Continued page 126 May1993 123 original landing gear somewhat complex intended simulate full-scale gear much-simplified Wittman-type gear design made 1/4-inch-diameter music wire shown plans swivel joint machined allow prototypes wings fold Wing pins #6 tapered complex feature shown plansremovable panels have substituted OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLAYBOY SR KIT 112A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $330 STOCK ORDERS SHIPPED WITHIN 24 HRS W Composites fiberglass experts video shows descnbes easy use composites construct basic lamination 1993 catalog included $5-off coupon towards first order Approximately 60 minutes Only $2495 plus $450 shipping handlingi Z e Glast Developments Corporalion 800 821-3283 SnipelGilgenbach Continued page 123 modelers have material available strong yet less expensive music wire truly amazing steel Most model aircraft use gear type because simple durable WING models wing made simulate folding feature full-scale aircraft practical standpoint however normal model would need removable wing panels what Ive shown plans prototype model used #6 tapered pins hold wing sections together feature required some difficult machining plans show hex-head cap screw nylon-insert locknut unusual feature wing design use 025-in-thick x 75-inwide 4130N steel wing spar caps wing designed handle 9OG 45G ultimate loadsthe loads structural failure occurs full-scale aircraft would exceed loads 6OG 3OG under normal aerobatic conditions model haphazard flying tech niques possible attain much higher loads Therefore prudence must exercised flying model Wing construction simplified through use wing fixture notched front rear spar webs building sequence follows 1 Make wing fixture using miscellaneous pieces lumber have around workshop Make spars ribs 2 Cut 14 steel spar caps six long eight short length radius ends drill mounting lightening holes deburr sand 3 Cut out A6 x 3/4 plywood Aa x 3/4 balsa spar caps glue steel caps outer wing panels using UFO Thick 4 Cut out notch plywood spar webs Make sure webs fit snugly wing fixture 5 Using UFO Thick glue boltom outer front wing spar caps wing webs 6 Clamp outer wing panel front spar assemblies fixture position rear spar web ribs fixture 7 Align ribs glue spar webs Note glue top front spar cap yet 8 Glue leading edge front ribs 9 Glue rear plywood spar caps ribs rear spar web remove assembly fixture 10 Screw bottom outer main spar caps wing web block 11 Repeat operations 6 through 10 other outer wing panel 12 Glue 1/16 x 3/4 plywood balsa spar caps center wing steel spar cap 13 Glue plywood front spar web center bottom front spar cap assembly 14 Clamp assembly fixture position rear spar web ribs fixture 15 Align ribs vertically using square glue spar webs glue two end ribs lime 16 Glue top front spar cap ribs spar web 17 Glue leading edge two rear plywood spar caps ribs rear spar web Remove assembly fixture 18 Screw spar caps wing web block 19 Glue four wing-locating dowels place outer wing panels 20 Assemble outer wing panels center wing panel adjust dihedral angles sliding top wing spar caps outer panels 21 Clamp two end ribs center wing section two end ribs outer wing sections 020-in-thick shims between ribs shims thickness two pieces 010 ABS plastic 22 Glue top outer wing spar caps center section outer ribs place 23 Screw top outer wing spar caps wing web blocks 24 Shape sand leading edges three wing panels match ailerons flaps can built over plans flat surface intercon necting flap swivel tubes should aligned glued swivel joint installed flap sections aligned wing retracted position Note control surfaces use music wire through hinges easy assembly disassembly models wing tips made balsa plywood bolted outer wing rib two 6-32 socket-head cap screws could also glued place intend try several different wing tip types deter give best stall characteristics CANOPY canopy made heating stretch ing 040-in Plexiglas over plug follows 1 Make plug wood coat epoxy 2 Sand epoxy smooth texture surface will transfer directly inside canopy formed 3 Attach handles two sides Plexi glas sheet 4 Heat sheet plug oven until Plexiglas starts sag 5 Remove both oven stretch Plexiglas over plug repeated process several times get final shape 6 Make canopy frame 7 Trim attach canopy frame using UFO #1 flat-head wood screws COWL AND WHEEL PANTS Make cowl following sequence 1 Cut out plywood cowl framework 126 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPS! PROMPT SHIPMENT ON VISAdMC SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 2 Glue framework several Styrofoam blocks 3 Cut sand Styrofoam shape 4 Cover assembly layer six-oz fiberglass cloth used Hobbypoxy Formula 2 bond fill cloth 5 After epoxy hardwait least daytrim off excess fiberglass sand rough edges high points apply heavy coat Hobbypoxy mixed 50/50 microballoons 6 Wait least day rough sand outer surface shape 7 Split cowl hollow out Styro foam leave 3A-in-thick Styrofoam wall inside half 8 Sand Styrofoam wail smooth apply layer six-oz fiberglass inside half 9 Wait another day trim sand excess fiberglass Add hinges holddown latches hinges T-pins 10 Reassemble two halves finish sanding cowl halves exceptionally rigid assure good fit attached cowl fuselage matchsanded Remember compensate 0l0-in-thick ABS fuselage skin wheel pants can made forming Styrofoam plug covering two layers six-oz fiberglass coating fiberglass 50/50 epoxy/microballoon mix sanding shape hollowing out Styrofoam SKINNING PAINT AND TRIM Sand contour stabilizer smooth Remove dust loose particles Cut out 010-in ABS plastic skin slighfly larger area covered Cut skin wrap around leading edge allow enough stock overlap leading edge control surface stabilizers trailing edge Place skin onto hot approximately lOOT flat surface tape down end used wifes glass-topped dining room table space heater underside glass necessary skin will tight normal room temperature Run bead UFO Thick trailing edge ribs up leading edge top side horizontal stabilizer Start ing top gives better chance spot misalignment skin best part skinning job visible can start either side vertical stabilizer Press trailing edge onto skin leaving h-in overhang Roll stabilizer skin toward leading edge pulling stabilizer toward yourself keep skin taut Remember taped opposite edge glass table Hold pressure assembly about minute UFO sets Remove assembly table apply UFO Thick leading edge top front bottom Tape skin table again roll skin around leading edge making sure skin tight Hold pressure assembly about minute Remove assembly table skin should now glued tightly around leading edge Now apply UFO Thick ribs trailing edge remaining side Tape edge skin table roll stabilizer onto skin Hold pressure assembly about minute Remove structure table trim edges sharp knife sanding block structure cools should stiff tight skin exposed rib sides can covered ABS plastic paint commercially available heat-shrinkable plastic covering may used skin folded trailing edges elevator rudder yields goodlooking straight trailing edges Folding ABS plastic can present problem however following technique should used 1 Build sand control surface Remove loose particles 2 Cut ABS skin slightly larger required 3 Lay thin 025-in steel straightedge onto skin fold line weight clamp down end 4 hard pencil draw trailing edge fold line Push down hard pencil plastic scored scratched 5 Fold skin over straightedge creating 1800 bend 6 Remove straightedge fold skin flat fold line should now straight 7 Tape top side skin heated glass table 8 Apply UFO Thick top side control surface substructure 9 Position substructure onto skin Press roll attach skin Hold pressure assembly about minute 10 Remove assembly table apply UFO Thick opposite side substructure 11 Repeat operation 9 opposite side 12 Trim off excess skin rudder rolled skin halfway around leading edge side elevator covered leading edge separately wing panels subsequently skinned using same procedure horizontal stabilizer ailerons flaps skinned using same procedure elevator fuselage sides skinned first turtledeck finally bottom using basically same techniquesplacing skin warm worktable applying UFO Thick structure pressing rolling structure skin Through trial error Ive learned several interesting things working 010 ABS plastic accidentally spill epoxy plastic denatured alcohol will remove epoxy damaging plastic Once P-40 WARHA WK Made USA SPECIFICATIONS WINGSPAN 60 ENGINE SUE60 2-EEROKE WEIGIfT7-8 LBS IIV7RO PRiCE$16000 ALL KITS FEATURE BAND LAID FIBERGLASS FUSEIAGEPANEL UNES SCALE DETAILSFOAM CORE WINGS MACHINE CITE FORMERS & BULKHEADS SEE YOUR LOCAL DEALER OR CALL HOBBY IL4NGAR 606-2&3-5 746 FOR IMMEDIATE DEUVERY DE4LER INQUIRIES WELCOME WEACCEPT VISA MASTERCARD & DISCOVER CARDS WEGLADLYSHIP COD SHIPPING 114 NDUNG $309 PER KIT CONTINENTAL USA OilIER AREAS CALL KE VCKY RESIDENIS ADD 6% SALES TAX HOBBY HANGAR ISA FULL SERVICE HOBBY SHOP WITH OVER 11000 ITEMS IN STOCI CATALOGS VAILABLE $400 EACH WIREBATE ON FIRST ORDER SPECIITE PIANEHELICOPTER OR CAR HANGAR EXaUCSIVEDISTRWTCW FIBER SCALE MODELS 153 LLOYD AVE R2VDW KY 41042 606-283-5746 IYW 606-2853889 FAX May1993 127 FOCKE WULF 190 Made USA SPECIFICATIONS WINGSPAN 65 ENGINE SIZE6090 2-SISOKE 90-120 4-SEROKE WEIGIIr9-10 LBS IPTERO PRICE SPECIFICATIONS WINGSPAN 60 ENGINE SIZE WEIGhT 60 2-SIROKE 8-ES LBS CESSNA 150Made USA SPEClFICATIONS WINGSPAN 65 ENGINE SUE WEIGHT 45-60 2-SEROKE 7-75 LBS QUALIT WTEGITY SRV1CE QJLALTr INTEGUTY SiR VICE QJJALIrY INTEGRITY SERVICE 5~ tJ uJ GRTYSER VICE 3950-AValIeyBIvd WALNUT CA 91789 Li w A T PE RR 0 0 F ci C S T FA R N ED EI N G U 01 O0 0 IIEAm OOD Jo C PLME 0' U SHADE 51g-i5 ni CALL OR WRITE FOR FREE BROCHURE Pitts-Style Mufflers UNIVERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2185 SI-SI IT-GOP $2385 MOKI 61 JT-MK61P 52595 UNIVERSAL 9OlT ON Side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts supplied muffler JT-40P8 29-45 $2285 JT-A91PASP 1002995 JT-F74PFOX 742995 JT-M100PMAXOl-lOS2995 JT-BGXPMAX BGXI3495 JT-5T69PST 61-75-902995 JT-ST25PST 25-30002995 JT-MK150PMOKI 153495 JT JT-W12OPWEBRA 1202995 5161 ZJTECI MAIL ORDER se add $255 UPS shippIng Check MO Visa MC COO accepted Add $400 extra COD California residents add 8% sales tax 255 Eat Alillorld/FO 8xx727/Sodo Springs dubs 82276 ULTIMATESPORT RC UlTIMATE 5-305 Mlii12085473742F F,nh5ed 5555 epoxy sets will have lot trouble removing may have sand off Removing UFO ABS plastic tricky Put small amount Zap Z-7 Debonder onto clean rag lightly wipe over UFO rub too hard too long Z-7 will cut plastic dull surface Z-7 can bring back shine Turtle Wax white automotive polishing compound Sooner later will scratch ABS skin occurs scratches can removed sanding 1200-grit wet-ordry sandpaper rubbing polishing compound sanding rubbing skin dont push too hard skin may crack attached structure plastic can shrunk using heat gun also very easy melt will shrink enough force warp substructure dont recommend heatshrinking minimize wrinlding sunlight plastic should preheated before installation K&B thinner cuts ABS plastic K&B epoxy sticks well especially thinned Conversely dont use K&B thinner cleanupuse denatured alcohol miscellaneous parts painted K&B primer K&B Super Poxy parts made plywood balsa spruce steel aluminum brass epoxy fiberglass resin ABS plastic Ive never found paint sands holds up better K&B worked equally well over materials order save weight time chose paint entire aircraft However did sand polish skin blemishes scratches used Jumbo Stripe Kit Eagle Products trim model decals easy install durable look good Eagle Products offers several different color schemes can individualize aircraft Personally like fluorescent pink/blue/purple combination TESTINGAT HOME Before taking new model flying field several things should always done First check center gravity CG should between 23% 27% wing chord first few flights flown CG 28% would recommend adding weight nose necessary get CG 25% wing chord engine should test run aircraft set up different attitudes eg nose up nose down inverted uprightto check run consistency radio equipment should actively cycled hour recharged cycled again hour test will also reveal control surface/linkage hang-ups radio must range-checked both engine running stopped Dont forget tie down plane Continued page 174 128 Model Aviation uSt extensions worm drive mounting strap Included MGLASS ALES INC W Fiberglass Headquarters * BUY DIRECT * Super Bond S mit Epony Epoxy Lsminxting Resins Cyanoacrylate Adhesives Glones ective Hand Creams Masits ns Polyester Resin al SprayerLaminating Bnsshes ers Acetate Fiberglass Fiilers Tongue Depressom Mioing Paddles sive Discs Sandpaper Foam Brushes Fine-Weave Median Heaxy Weight cloth ar on Fibers TECHNICAL INFORMATION Kenlar Tap. snarbon fib, tap. CALITOLL FREE earbon tiber tand available IMI WI ors ul 1-800-589-4444 18621 8 Nne MileRoad EastpointuMichigsn48O2l 313 777-2032Fax 313 7770350 Foao Flnis 5da, AI~ Lon4g Osar clerr Conopy Aailabl e,iIde KjI S255~ shasred Kr S5u5~Olna Sheered KI SUSS Over 70 Kits Fox Engines best prices FREE CATALOG DoCs Generix Controline P0 BOX 111 Jasonville IN 47438 Tel 812-665-3723 WORLDS LARGEST SCALE PLANS & DOCUMENTATN SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS ze 120 PAGE CATALOG 55 00 USA & CANADA StOQO AIR OVERSEAS Jim Pepmnos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE NSBORO NC 27403 292-5239 WORLDSMOSPAOTNEMTI MOD PLANSALL PATTERNS INCLUDED SCALEOFPL&NS*-DSFOPOP OP RSABBBEVIATED NAME 1/SASZ 1/L6SZ 1/B SE 1/6 SZ 1/4SZ 37 OeHov Cootec Rone 22320 324332 66344 132068 40 Vooght Cone P45 20320 30326 60345 15 Con JN4S Jenny 21318 32324 65$38 86 352 27 Llodbeoge 80211 15314 34 324 69334 91348 29 Wano TaperWing I5314 22 $20 45334 6034850362 36 Weatlod Lynanden 25319 37 324 75338 OA 2 35 Soog 046A Obon 23324 34332 68346 29 Boeing 100 Spont 15316 224324 453361603 nin Tninoton 30330 43338 90 6212037 39 LoOk Licknog P 39 Gee P38AFlghEn 184315 28 20 56334 I 2 25 VgE CoeD 0281/4 08320 27 28 38 Con CoElna PBY5o 52 48 78 60S04I~1A 19 Coctien NC4 624366 94089 17 Fekken 57 Ftc 14312 21316 8 o4349 31 Baylen GeeBee 114312 17314 35332T4344 75356 13 Sepenolanlon 068 15310 44432616038 8952 36 GroIn GolOhank 144314 214388 43$38 SCALE PLAN 35 Look Electra #11 27325 60332 55338 Look Slow 34 43 GroIn nengen TRE 30328 40 338 803 2 Fond 3M 4AT6 42 Roe B17G FlyFoct 51345 77 35 Roe 8170 36 38 NA MItohell 825 364337 55352 NA 525 36 34 MnoolCato088C72 154315 23322 454335 MeG N 826 6 37 Con Navy 003C1 19318 284324 57336 lEOn Tnt 4 25 CRaoen R3C-1 &2 11 315 164320 3 3 Nod1yPo e 6 34 Doog Tonoep SC3 47340 71 350oo 6 33 ConE Hawk P6E 154315 234322 47 4 32 Doolittle GB#11 124317 184322 37e335 49 46 74338 31 Bee P48344 P12B 15316 224320 444332 394 44 B9358 32 Spefld BollDog 134316 20320 40e332 53580358 32 Howard Ske&SBlke 104312 154315 31326 62345 34 Tocoeca 800cc 13312 194316 39 328 5- 340 78352 35 Now Molligan 16 315 234320 47332 64 44 94 56 33 Boa P26A Low Hog 14315 21 320 42332 63 45 84 58 35 Stlneen TSI SR7 204316 314325 42 58 Mooqolte Book 374324 41335 B1350408e365 37 Steceseen PTi16 318 244322 49 39 43 N Bik Widow P61 33340 494350 99 75 30 TAOES Nwke Ten13 144383 214318 43 36 86 42 CHelldive 5B2C4 25325 374335 26 Fond Teimote 4AT 38338 57 348 31 Ballano AlE Ron 32 322 48 330 96 52 33 Gnome J2F look194S28 29 340 58355 N 36N 27 CSeakawk F7C1 154318 234324 47338 6J35Q94e 83 28 SIk AopkLk S38 36$34 543424082B042U 16 8Pge 0-400 Rosob 55345 75956 31 Liedys LSinloe 21316 314322 B 336 31 Howard BaoPete 10312 15315 30330 0342 31 C Spackuk F9C2 124315 19322 38332 5543 8176358 33 Aceonca 13 Opt 18310 27314 534326 48 38 Toenone peeco Op 124316 184320 37336 rIght Ellen204318 304324 604838 5 AD BEPOBE ORDERING* 3/6 SCALE 1732 NILEI MT EESAIM 08088315 00PLANS AVAILABLE AT ONI 80 SURE TO ASS THE 120U GOLLAIT UNOER1I24 SIZE AL 1O7 FOR PACKAGINGIi IESFORA1L DESIGN POSTAGE ANS INOOSANCE ABOUT THOUSAND ADGITI4 PLINS MANY SIZES 75 CATALOG 3200 58 SS LIST ALONE 31. 55 AIR FOBEIGS 33 eveana e uppy 0 Edeerd 0 PeckedOnIaIiolS Nest FrIondSleoS IRIS".eP"P" 9800B BETNOI ANEN EEl LIONS 810 4 552O 5000 Snipe/Gilgenbach Continued page 128 aircraft should taxied familiarize yourself its groundhandling characteristics After running engine cycling radio taxiing check linkage connec tors nuts bolts tightness find loose components dont just retighten determine loosened take corrective action such gluing using Loctite PREFLIGHT Once became familiar operating characteristics aircraft confident everything functioning properly ready take long lonely drive flying field new model recommend following Dont go flying field day will crowded Dont take lot friends Arrange have just two helpersan experienced model builderlpilot good camcorder operator Videotape entire flying session includ aig preflight weather adverse cancel wait another day Conduct preflight inspection Check linkages connectors inspect control surfaces direction travel amount throw run engine different attitudes range-check radio FLIGHT PLAN developed flight plan would know exactly what intended would have contingencies something went wrong flight plan steps 1 Take off northwest wind flying field went has approximately 1/ mile grass direction engine died takeoff could land wind attempting tarn 2 At approximately 200 feet altitude 200 yards distance perform 180 right-hand turn 3 Climb 300 feet fly 400 yards southeast 4 Perform left-hand procedure turn 5 Fly 400 yards northwest trim controls perform right-hand procedure turn 6 Fly 400 yards southeast 7 Repeat steps 4 through 6 several times trying both high low rates elevator ailerons verbally noting control response helper video camera 8 Test flight characteristics aircraft flaps down 9 Enter right-hand landing pattern land aircraft flaps down possible After first flight inspected linkages nuts bolts connectorsnothing fallen off prototype proved quite stable too responsive controls low rate interesting activating flaps produced no pitching tendency 25 flaps engine idle landing relatively slow considering fueled aircraft weighed 25 pounds second flight explored aircrafts aerobatic characteristics surprise performed very much like pattern ship landing flaps disastrous however model caught wing tip damaging left wing nose gear After second flight checked model cleaned folded wings packed up went home review videotape video recording proved invaluable project guess thats have flight recorders airliners video showed second landing flared too soon too much causing right wing drop slighfly overcorrected models left wing hit ground After further analysis causes obvious still too much elevator aileron throw CG 28% flying skills rusty subsequent days checked out stall spin characteristics different weights CG locations TEST RESULTS 1 model flies well CG 25% 2 drooped wing tips stall DC Flight Training Beginner advanced tailored individual long-time modeler full size airplane flight instruc tor will make progress fun easy during week stay beautiful far western North Carolina Write call information RC Flight Training Rm 1704 38949GB 174 Model Aviation scale kits engines accessories want &you want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HES 1387 N Military Trail West Palm Beach FL 3340 407-68841669 HOBBY SUPER IUKL straight no tendency snap roll drop wing tip 3 slow ground speeds difficult turn model steerable nose wheel individual main gear brakes 4 ABS skin does vibrate excessively regardless engine rpm 5 Theoretically model should fly well 34 pounds hut have yet test theory 6 Elevator trim changes required flaps activated 7 Landings docile 200 400 flaps Forty degrees flap quickly slows plane greatly increases rate descent 8 No control flutter encountered 9 aircraft will spin CG less 20% full control travel CONCLUSIONS project would have successful help encouragement individuals organizations strongly recommend modelers patronize manufacturers distributors mentioned article Further wish thank flight assistantsGus Rebensburg Jerry Reichow Duncan Stewartfor time effort Based test results am now con fident feasible develop full-scale Snipe As am detail-designing big Snipe will continue use -scale model test different features building techniques cant wait get started bending tin summer 1998 Ill let know full-scale aircraft flies leads final question build full-scale model prototype -scale aircraft can enter sanctioned AMA scale contest lope SoaringlByors Continued page 106 required servo fact typical microservo will extend retract landing gear well open landing gear doors Gene has also designed over-center system retractable landing gear landing no force transmitted servo might strip servos gears over-center system also works retracted mode wheels inertia cannot throw gear out open ruggedness retract system surprising Gene has tested gear design doing push-ups install gear builder custom-fits fuselage between two bulkheads installation method serves two purposes First bulkhead mounting provides very rugged attachment inside fuselage gear cannot broken loose landing impact mounting system lets builder adjust depth wheel extension through fuselage Now meticulous scale builder want best retractable gear money can buy Cope retract probably worth considering Gene offers retract two sizes has -scale version currenfly priced $125 Cope also offers supersize -scale retract will handle really big birds tells sometime not-too-distant future will offering -scale model too Cope Retracts can contacted 32031/2 Main St Union Gap WA 98903 telephone number 509 457-9017 modelers friends contacted during month Mr Darrel Johnson Mesa Arizona suggested discuss balance models Well perfectly honest sometimes just mount model atop left right index fingers quick dirty Other times ever procedure bit exacting use balance stand balance stand simple device can built just few minutes aid good old Hot Stuff similar product stand built -inch plywood other plywood approximately size drawing outlines construction shows supporting fillets keep stand breaking large load applied drawing also details round edge stand upon model placed reason use stand quite obvious want obtain balance point model accurately possible stand much easier Using fingers balance model turns procedure somewhat juggling act However can place model stand make weight VIDEO_____ JOY OF FLYING FREE very informative 42 minute VHS video displaying phenomena free flight its variations great PR video can used effectively educate uninitiated art model aviation video professionally produced National Free Flight Society features both indoor outdoor activity available NIFFS 1655 Revere Drive Brookfield WI 53045 * Include Check $2500 plus $300 P&H per tape Buy 4 VgPEOS FREE #17 92 SCALEMASTER CHAMPS STAR MUS PIMA AIR MUS ALABAMA 2 Hrn.$1995 #16 AIRCRAFT GUNTERSYILLE AL AVAL AIR MUS PENSACOLA FL 2 Hn.51996 #1 592 WORLD SCALE CHAMPSAMA INVTL SHOOTOUT W INTL SCALEMASTERS 2 Hn.$1995 #1492 NW SEAPLANE CHAMPS EN SCALE AVIATION IN AUSTRALIA2 Hm.$1995 3 op Gun Invitari oledo Model topo s Air Museum2 Nra. 51996 #12- 91 Scalemasters tao Vegas 91 DSAA Las Vegas 91 NWlntl2 Hre.$1916 C #11 Scalemaster Aircraft Preview Mfg Visdw1tlan Parsons- 91 NWteaplanethamps 2 Kn.S1996 Z#1O 91 Tup Gun W Palm Bch Fl SsA Lao Vegas W Model topu2 Iin.$1996 90 Scalemasters Champs Irving TX hidbey 101 Scalemos5ers an Diego Aerospace Moo 2 Hra.51996 90 NW Intl Scalemasters Farragot Park-Athol ID m Champlin Fighter Museum w/tou Proctor W Seaplane ps Santa Monica Mos Flying 2 Mn. 51995 #7 op Gun Invitational Mesa AZ W Model Eupo2 Hrs.$1995 #6 89 Scalemasters Champs St Louis ake lianaso m Schneider Cop Races2 IIrs.$19gG 89 US NaIls Scale & Seaplanes 89 NW Seaplane Champs Planes Fame taut Moo Moo DshkoshVisit mw/Ralph Beck Chicago Mo Sci & Ind 2 Hs.$1995 #4 09 Top Gon Champo Coral Springs FL tor Albatroo DVA Preview atIs Seaplane Site NW ntl oScalemasters tor N-li Test Flight 2 Hre.S1I96 IA Special Edition Proctor Enterprises Atbatroo OVA Brief Conotr Engine Radio Irrntall& Teat Ftigbto 2 Hra $1996 Cuetias JN4D Jenny Plan FUN SCALE 109 inches 1804 sq 11 lbs 8 sheets w/instroctions 51996 10807 SE STACY CT PORTLAND OR 97266 PHONE 503653-25780 FAX 503 6781342 SEND STAMP FOR COMPLETE LIST PAL & SECAM ORDERS CONCEPTS 17 MILPERA CRESCENT WANTIRNA VIC 3152 AUSTRALIA e 03801-3899 03887-3472 BETA CARLSON ENGINE IMPORTS 814 East Marconi Phoenix AZ 85022-3112 IMPORTED DIESEL ENGINES Worlds Best Selection AE AM Aurora Cipolla D-C KMD MAP Mikro MK MWS Oliver PAW Pfeffer Silver Swallow USE Also Replica Mills MOVO Letmo diesels rare imported glow engines CO motor sets Ten page catalog 1 00 May1993 175
Edition: Model Aviation - 1993/05
Page Numbers: 56, 57, 59, 60, 61, 62, 123, 126, 127, 128, 174, 175
PART TWO LAST MONTH explained steps required design full-scale homebuilt aircraft also gave reasons believe -scale RC model design should built tested month design construction testing model will discussed MATERIAL AND HARDWARE SELECTION goal pick good quality readily available products would allow simulation assembly processes would use building full-scale aircraft model aircraft substructure chose use plywoodaircraft quality Lite Plyand balsa such critical areas wing spars landing gear wing folding joints used aluminum and/or 4130N steel depending strength requirements skinning aircraft used 0 10inch-thick ABS plastic should give good indication what will encounter skinning fullscale aircraft 016- 040-inch-thick aluminum sheet needed use adhesives could bond plywood balsa Styrofoam fiberglass steel aluminum ABS plastic Satellite City able meet requirements UFO Thin UFO Thick adhesives plus Hot Shot Kick-It accelerators instant bonding necessary UFO Thin worked well UFO Thick allows repositioning parts before adhesive sets especially important during skinning process feature appreciate about UFO doesnt give off irritating gas some CyA glues Du-Bro Products has complete line quality hardware items including scale wheels hinges control horns pushrods wheel collars blind nuts etc used Du-Bro hardware wherever possible pushrodl clevis assemblies coil spring locks used control surfaces ensure safe reliable connections ENGINE SELECTION different engine types sizes considered before made final selection objective ability swing 18 x 10 prop approximately 7000 rpm didnt want use gasoline fuel because its relatively dangerous handling characteristics considered methanol-burning engines several multicylinder engines could have done job initial cost prohibitive single-cylinder methanol-burning engines available OPS 30 Maxi Shamrock Competition Imports Inc offers best value Its powerful engine has good starting idling transition throttling characteristics Other appealing features muffler locations flexibility engines light weight converted leaf-blower engine specifically designed power model aircraft 15- 22pound range Although ringed engine manufacturer still recommends breaking about hour no problem meI always run engines quite familiarize myself ensure everything functioning properly before taking air 56 Model Aviation month previewed full-scale Snipe Now lets build model U James Gilgenbach selected Cool Power Tartan/Bully fuel specifically blended engine size type have excellent results Cool Power past application no exception Another benefit using Cool Power opposed factoryrecommended 5% castor oil 95% methanol added rust] corrosion protection wanted lightweight three-inch-diameter aluminum spinner would fit OPS 30 Maxi look good Tm-Turn TT-300B proved excellent selection modified TT-300B cutting slots fit 18 x 10 prop Tm-Turn has big scale spinner available doesnt require drilling backplate engine drive pins drilling tapping prop washer prop backplate two 6-32 bolts drilling tapping OPS 30 Maxi prop nut 10-32 spinner bolt modifications lock prop engine fashion similar used full-scale aircraft Both Zinger wood props Dynathrust composite props performed well props OPS 30 Maxi turned following rpm 18 x 6 18 x 8 18 x 10 18 x 8/14 20 x 8 Zinger 8100 rpm 7500 rpm 6800 rpm 6200 rpm 5800rpm 18 x 8 18 x 10 Dynathrust 7400 rpm 6700 rpm RADIO SELECTION Futaba 7UAP radio control system offers options required handle -scale Snipe options include following 1 Ailerons separate S148 servos aileron Y connector AEC 4 b Extensions AEC 11 2 Elevator 8134 -scale servo 3 Rudder S 134 -scale servo 4 Flaps S134 -scale servo 5 Throttle S148 servo 6 Elevator trim tab S148 servo 7 Airborne battery pack NR-4LB 1000 mAb Type 114-scaIe test model Wingspan 76 inches Recommended motor size type OPS 30 Maxi Number RC channels recommended Six Expected flying weight 25 pounds Type construction Built-up Type of covering finish recommended ABS plastic skin K&B Super Poxy May1993 57 crashcomponents shown prior assembly model can readily stripped down necessary shipping storage Models skin 010 ABS plastic ne cowl canopy hatch open just will fullscale aircraft allowing access instruments Full Size Plans AvailableSee Page 184 -- - LIQ 8 Charger FBC-6B4 programmable transmitter allows fine-tuning flight controls need modify mechanical linkages feature saved least 20 hours trialand-error testing also like built-in timer can used monitor long radio has discharging servos tight thus eliminating control drift need constantly change trim MODEL CONSTRUCTION SEQUENCE basic steps build model follows 1 Build skin horizontal vertical stabilizers elevator rudder 2 Build fuselage including console turtledeck top Build engine/nosewbeel mount 3 Make landing gear parts steel spar caps 4 Build center wing section 5 Build outer wing sectionsleave top spar cap loose 6 Assemble wing sections adjust dihedral 7 Make install flaps ailerons 8 Fit wing horizontal vertical stabilizers fuselage 9 Install engine muffler nose gear 10 Install aileron servos make hatches 11 Skin fuselage interior Make install turtledeck front fuselage top May1993 59 L Steel weights hold bottom fuselage side skin placeTwo 6-32 bolts two 2-56 bolts attach removable until UFO Thick sets up Fuselage longerons used keyempennage fuselage control surfaces use music wire alignment surfaceshinge pins easy assembly/disassembly bulkhead stiffens center section Futaba S148 servo mounted canopy frame has temporary cross fuselage Empennage control rods wing section actuate ailerons Most braces added until Plexiglas canopy cables run through center console wing ribs 18 Lite Ply glued screwed place I1__ __I eJKL F V K ~~o V r 1 K JK C- IF 7 3 F F MATE1AS 4_ EM E empennage fairing 12 Make fit cowl canopy 13 Skin remaining parts model 14 Install rest radio components balance model 15 Paint accessories add trim EMPENNAGE substructure empennage made balsa Lite Ply assembly can done using variety accepted tech niques chose drill holes through ribs use music wire rods alignment Although elevator has separate trim tab model does need normal RC flying empennage assembly attached fuselage two 6-32 bolts two 2-56 bolts can removed storage maintenance tips rudder elevator have lead added balance control surfaces covered white Super MonoKote glued control surfaces IJFO FUSELAGE fuselage built upside down plans top cowling turtledeck added later Overall alignment critical 60 Model Aviation ofoam glued cowl frame sanded shape cowl assembly removed fuselage fibergiassed six-ounce cloth Hobbypoxy Formula 2 lsa frame used locate cowl engine OPS 30 Maxi runs very coola streamlined cowl could have added around cylinder head order determine best skinning process started making empennage messed up skinning replacement vertical horizontal stabilizer substruc ture would traumatic wing substructure replacement OPS 30 Maxi excellent choice power Snipe pulls model Toothpick pins added elevator hinges due location beneath through maneuver effort models skin Trim tab prototype necessary normal flying uI 4\ w -J IV\ -\ May1993 61 producing good-flying aircraft have found several tools invaluable es tablishing alignment follows 1 Steel squaring blocks least three required 2 12-in combination square/level 3 6-in machinists scale 4 72-in straightedge/scale 5 16-in x 24-in carpenters square 6 Incidence meter 7 Wing horizontal stabilizer airfoil tem plates 1/s-in plywood coated UFO Thin 8 Flat work table 2 ft x 5 ft minimum 9 0-clamps 10 T-pins 11 Masking tape 12 Alignment/building fixtures gauges Explaining use tools could consume enough pages 62 Model Aviation * Vertical stabilizer rudder built simple fixture holds wing place Root ribs stiffened 1/16-in balsa directly over plans Rudder post during skinning operation skin sheeting Spar caps 025 4130N steel features full-length music wire pin gives wing much its rigidity laminated between 1/ie ply 1/i6 balsa wing skin attached leading edge contact Completed skin looks beautiful fixture eliminates wing twist cement prevent cracking over period time UFO adheres skin misalignment Wings have degree washout skin balance structure built Continued page 123 original torsion bar nosewheel Without skin Snipes structure very flimsy just like its full-scale allowed nose dip too much high brothers text contains complete skinning instructions grass fields plans show fixed gear 24 N NIPE Snipe/Gilgenbach Continued page 62 separate article will detail use However several rules thumb should followed concerning alignment First never check alignment dimension once Check over several times preferably several different ways Second dont get engrossed details forget basics example making two left wings Third eyeball alignments look wrong probably Fourth add temporary braces structures flimsy until structures covered skinned fuselage main structure alignments set top longerons should used starting point alignments Wing dihedral incidence well horizontal stabilizer incidence parallelism should set reference longerons LANDING GEAR debated whether present details scale landing gear article drawings full-scale gear will use torsion bars hydraulic shock absorbers intent minimize weight full-scale gear yet still provide good shockabsorbing qualities different approaches can taken meet criteria want learn book Landing Gear Design Light Aircraft L Pazmany excellent source concluded gear far too complex anyone just wants goodflying less-than-exact-scale model took several hundred hours design machine parts milling/drilling machine metal lathe went through exercise because needed develop knowledge build fullscale aircraft gear recommend model referred Wittman-type gear because Steve Wittman originally developed full-scale aircraft aircraft use expensive high-alloy steel gear legs Continued page 126 May1993 123 original landing gear somewhat complex intended simulate full-scale gear much-simplified Wittman-type gear design made 1/4-inch-diameter music wire shown plans swivel joint machined allow prototypes wings fold Wing pins #6 tapered complex feature shown plansremovable panels have substituted OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLAYBOY SR KIT 112A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $330 STOCK ORDERS SHIPPED WITHIN 24 HRS W Composites fiberglass experts video shows descnbes easy use composites construct basic lamination 1993 catalog included $5-off coupon towards first order Approximately 60 minutes Only $2495 plus $450 shipping handlingi Z e Glast Developments Corporalion 800 821-3283 SnipelGilgenbach Continued page 123 modelers have material available strong yet less expensive music wire truly amazing steel Most model aircraft use gear type because simple durable WING models wing made simulate folding feature full-scale aircraft practical standpoint however normal model would need removable wing panels what Ive shown plans prototype model used #6 tapered pins hold wing sections together feature required some difficult machining plans show hex-head cap screw nylon-insert locknut unusual feature wing design use 025-in-thick x 75-inwide 4130N steel wing spar caps wing designed handle 9OG 45G ultimate loadsthe loads structural failure occurs full-scale aircraft would exceed loads 6OG 3OG under normal aerobatic conditions model haphazard flying tech niques possible attain much higher loads Therefore prudence must exercised flying model Wing construction simplified through use wing fixture notched front rear spar webs building sequence follows 1 Make wing fixture using miscellaneous pieces lumber have around workshop Make spars ribs 2 Cut 14 steel spar caps six long eight short length radius ends drill mounting lightening holes deburr sand 3 Cut out A6 x 3/4 plywood Aa x 3/4 balsa spar caps glue steel caps outer wing panels using UFO Thick 4 Cut out notch plywood spar webs Make sure webs fit snugly wing fixture 5 Using UFO Thick glue boltom outer front wing spar caps wing webs 6 Clamp outer wing panel front spar assemblies fixture position rear spar web ribs fixture 7 Align ribs glue spar webs Note glue top front spar cap yet 8 Glue leading edge front ribs 9 Glue rear plywood spar caps ribs rear spar web remove assembly fixture 10 Screw bottom outer main spar caps wing web block 11 Repeat operations 6 through 10 other outer wing panel 12 Glue 1/16 x 3/4 plywood balsa spar caps center wing steel spar cap 13 Glue plywood front spar web center bottom front spar cap assembly 14 Clamp assembly fixture position rear spar web ribs fixture 15 Align ribs vertically using square glue spar webs glue two end ribs lime 16 Glue top front spar cap ribs spar web 17 Glue leading edge two rear plywood spar caps ribs rear spar web Remove assembly fixture 18 Screw spar caps wing web block 19 Glue four wing-locating dowels place outer wing panels 20 Assemble outer wing panels center wing panel adjust dihedral angles sliding top wing spar caps outer panels 21 Clamp two end ribs center wing section two end ribs outer wing sections 020-in-thick shims between ribs shims thickness two pieces 010 ABS plastic 22 Glue top outer wing spar caps center section outer ribs place 23 Screw top outer wing spar caps wing web blocks 24 Shape sand leading edges three wing panels match ailerons flaps can built over plans flat surface intercon necting flap swivel tubes should aligned glued swivel joint installed flap sections aligned wing retracted position Note control surfaces use music wire through hinges easy assembly disassembly models wing tips made balsa plywood bolted outer wing rib two 6-32 socket-head cap screws could also glued place intend try several different wing tip types deter give best stall characteristics CANOPY canopy made heating stretch ing 040-in Plexiglas over plug follows 1 Make plug wood coat epoxy 2 Sand epoxy smooth texture surface will transfer directly inside canopy formed 3 Attach handles two sides Plexi glas sheet 4 Heat sheet plug oven until Plexiglas starts sag 5 Remove both oven stretch Plexiglas over plug repeated process several times get final shape 6 Make canopy frame 7 Trim attach canopy frame using UFO #1 flat-head wood screws COWL AND WHEEL PANTS Make cowl following sequence 1 Cut out plywood cowl framework 126 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPS! PROMPT SHIPMENT ON VISAdMC SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 2 Glue framework several Styrofoam blocks 3 Cut sand Styrofoam shape 4 Cover assembly layer six-oz fiberglass cloth used Hobbypoxy Formula 2 bond fill cloth 5 After epoxy hardwait least daytrim off excess fiberglass sand rough edges high points apply heavy coat Hobbypoxy mixed 50/50 microballoons 6 Wait least day rough sand outer surface shape 7 Split cowl hollow out Styro foam leave 3A-in-thick Styrofoam wall inside half 8 Sand Styrofoam wail smooth apply layer six-oz fiberglass inside half 9 Wait another day trim sand excess fiberglass Add hinges holddown latches hinges T-pins 10 Reassemble two halves finish sanding cowl halves exceptionally rigid assure good fit attached cowl fuselage matchsanded Remember compensate 0l0-in-thick ABS fuselage skin wheel pants can made forming Styrofoam plug covering two layers six-oz fiberglass coating fiberglass 50/50 epoxy/microballoon mix sanding shape hollowing out Styrofoam SKINNING PAINT AND TRIM Sand contour stabilizer smooth Remove dust loose particles Cut out 010-in ABS plastic skin slighfly larger area covered Cut skin wrap around leading edge allow enough stock overlap leading edge control surface stabilizers trailing edge Place skin onto hot approximately lOOT flat surface tape down end used wifes glass-topped dining room table space heater underside glass necessary skin will tight normal room temperature Run bead UFO Thick trailing edge ribs up leading edge top side horizontal stabilizer Start ing top gives better chance spot misalignment skin best part skinning job visible can start either side vertical stabilizer Press trailing edge onto skin leaving h-in overhang Roll stabilizer skin toward leading edge pulling stabilizer toward yourself keep skin taut Remember taped opposite edge glass table Hold pressure assembly about minute UFO sets Remove assembly table apply UFO Thick leading edge top front bottom Tape skin table again roll skin around leading edge making sure skin tight Hold pressure assembly about minute Remove assembly table skin should now glued tightly around leading edge Now apply UFO Thick ribs trailing edge remaining side Tape edge skin table roll stabilizer onto skin Hold pressure assembly about minute Remove structure table trim edges sharp knife sanding block structure cools should stiff tight skin exposed rib sides can covered ABS plastic paint commercially available heat-shrinkable plastic covering may used skin folded trailing edges elevator rudder yields goodlooking straight trailing edges Folding ABS plastic can present problem however following technique should used 1 Build sand control surface Remove loose particles 2 Cut ABS skin slightly larger required 3 Lay thin 025-in steel straightedge onto skin fold line weight clamp down end 4 hard pencil draw trailing edge fold line Push down hard pencil plastic scored scratched 5 Fold skin over straightedge creating 1800 bend 6 Remove straightedge fold skin flat fold line should now straight 7 Tape top side skin heated glass table 8 Apply UFO Thick top side control surface substructure 9 Position substructure onto skin Press roll attach skin Hold pressure assembly about minute 10 Remove assembly table apply UFO Thick opposite side substructure 11 Repeat operation 9 opposite side 12 Trim off excess skin rudder rolled skin halfway around leading edge side elevator covered leading edge separately wing panels subsequently skinned using same procedure horizontal stabilizer ailerons flaps skinned using same procedure elevator fuselage sides skinned first turtledeck finally bottom using basically same techniquesplacing skin warm worktable applying UFO Thick structure pressing rolling structure skin Through trial error Ive learned several interesting things working 010 ABS plastic accidentally spill epoxy plastic denatured alcohol will remove epoxy damaging plastic Once P-40 WARHA WK Made USA SPECIFICATIONS WINGSPAN 60 ENGINE SUE60 2-EEROKE WEIGIfT7-8 LBS IIV7RO PRiCE$16000 ALL KITS FEATURE BAND LAID FIBERGLASS FUSEIAGEPANEL UNES SCALE DETAILSFOAM CORE WINGS MACHINE CITE FORMERS & BULKHEADS SEE YOUR LOCAL DEALER OR CALL HOBBY IL4NGAR 606-2&3-5 746 FOR IMMEDIATE DEUVERY DE4LER INQUIRIES WELCOME WEACCEPT VISA MASTERCARD & DISCOVER CARDS WEGLADLYSHIP COD SHIPPING 114 NDUNG $309 PER KIT CONTINENTAL USA OilIER AREAS CALL KE VCKY RESIDENIS ADD 6% SALES TAX HOBBY HANGAR ISA FULL SERVICE HOBBY SHOP WITH OVER 11000 ITEMS IN STOCI CATALOGS VAILABLE $400 EACH WIREBATE ON FIRST ORDER SPECIITE PIANEHELICOPTER OR CAR HANGAR EXaUCSIVEDISTRWTCW FIBER SCALE MODELS 153 LLOYD AVE R2VDW KY 41042 606-283-5746 IYW 606-2853889 FAX May1993 127 FOCKE WULF 190 Made USA SPECIFICATIONS WINGSPAN 65 ENGINE SIZE6090 2-SISOKE 90-120 4-SEROKE WEIGIIr9-10 LBS IPTERO PRICE SPECIFICATIONS WINGSPAN 60 ENGINE SIZE WEIGhT 60 2-SIROKE 8-ES LBS CESSNA 150Made USA SPEClFICATIONS WINGSPAN 65 ENGINE SUE WEIGHT 45-60 2-SEROKE 7-75 LBS QUALIT WTEGITY SRV1CE QJLALTr INTEGUTY SiR VICE QJJALIrY INTEGRITY SERVICE 5~ tJ uJ GRTYSER VICE 3950-AValIeyBIvd WALNUT CA 91789 Li w A T PE RR 0 0 F ci C S T FA R N ED EI N G U 01 O0 0 IIEAm OOD Jo C PLME 0' U SHADE 51g-i5 ni CALL OR WRITE FOR FREE BROCHURE Pitts-Style Mufflers UNIVERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2185 SI-SI IT-GOP $2385 MOKI 61 JT-MK61P 52595 UNIVERSAL 9OlT ON Side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts supplied muffler JT-40P8 29-45 $2285 JT-A91PASP 1002995 JT-F74PFOX 742995 JT-M100PMAXOl-lOS2995 JT-BGXPMAX BGXI3495 JT-5T69PST 61-75-902995 JT-ST25PST 25-30002995 JT-MK150PMOKI 153495 JT JT-W12OPWEBRA 1202995 5161 ZJTECI MAIL ORDER se add $255 UPS shippIng Check MO Visa MC COO accepted Add $400 extra COD California residents add 8% sales tax 255 Eat Alillorld/FO 8xx727/Sodo Springs dubs 82276 ULTIMATESPORT RC UlTIMATE 5-305 Mlii12085473742F F,nh5ed 5555 epoxy sets will have lot trouble removing may have sand off Removing UFO ABS plastic tricky Put small amount Zap Z-7 Debonder onto clean rag lightly wipe over UFO rub too hard too long Z-7 will cut plastic dull surface Z-7 can bring back shine Turtle Wax white automotive polishing compound Sooner later will scratch ABS skin occurs scratches can removed sanding 1200-grit wet-ordry sandpaper rubbing polishing compound sanding rubbing skin dont push too hard skin may crack attached structure plastic can shrunk using heat gun also very easy melt will shrink enough force warp substructure dont recommend heatshrinking minimize wrinlding sunlight plastic should preheated before installation K&B thinner cuts ABS plastic K&B epoxy sticks well especially thinned Conversely dont use K&B thinner cleanupuse denatured alcohol miscellaneous parts painted K&B primer K&B Super Poxy parts made plywood balsa spruce steel aluminum brass epoxy fiberglass resin ABS plastic Ive never found paint sands holds up better K&B worked equally well over materials order save weight time chose paint entire aircraft However did sand polish skin blemishes scratches used Jumbo Stripe Kit Eagle Products trim model decals easy install durable look good Eagle Products offers several different color schemes can individualize aircraft Personally like fluorescent pink/blue/purple combination TESTINGAT HOME Before taking new model flying field several things should always done First check center gravity CG should between 23% 27% wing chord first few flights flown CG 28% would recommend adding weight nose necessary get CG 25% wing chord engine should test run aircraft set up different attitudes eg nose up nose down inverted uprightto check run consistency radio equipment should actively cycled hour recharged cycled again hour test will also reveal control surface/linkage hang-ups radio must range-checked both engine running stopped Dont forget tie down plane Continued page 174 128 Model Aviation uSt extensions worm drive mounting strap Included MGLASS ALES INC W Fiberglass Headquarters * BUY DIRECT * Super Bond S mit Epony Epoxy Lsminxting Resins Cyanoacrylate Adhesives Glones ective Hand Creams Masits ns Polyester Resin al SprayerLaminating Bnsshes ers Acetate Fiberglass Fiilers Tongue Depressom Mioing Paddles sive Discs Sandpaper Foam Brushes Fine-Weave Median Heaxy Weight cloth ar on Fibers TECHNICAL INFORMATION Kenlar Tap. snarbon fib, tap. CALITOLL FREE earbon tiber tand available IMI WI ors ul 1-800-589-4444 18621 8 Nne MileRoad EastpointuMichigsn48O2l 313 777-2032Fax 313 7770350 Foao Flnis 5da, AI~ Lon4g Osar clerr Conopy Aailabl e,iIde KjI S255~ shasred Kr S5u5~Olna Sheered KI SUSS Over 70 Kits Fox Engines best prices FREE CATALOG DoCs Generix Controline P0 BOX 111 Jasonville IN 47438 Tel 812-665-3723 WORLDS LARGEST SCALE PLANS & DOCUMENTATN SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS ze 120 PAGE CATALOG 55 00 USA & CANADA StOQO AIR OVERSEAS Jim Pepmnos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE NSBORO NC 27403 292-5239 WORLDSMOSPAOTNEMTI MOD PLANSALL PATTERNS INCLUDED SCALEOFPL&NS*-DSFOPOP OP RSABBBEVIATED NAME 1/SASZ 1/L6SZ 1/B SE 1/6 SZ 1/4SZ 37 OeHov Cootec Rone 22320 324332 66344 132068 40 Vooght Cone P45 20320 30326 60345 15 Con JN4S Jenny 21318 32324 65$38 86 352 27 Llodbeoge 80211 15314 34 324 69334 91348 29 Wano TaperWing I5314 22 $20 45334 6034850362 36 Weatlod Lynanden 25319 37 324 75338 OA 2 35 Soog 046A Obon 23324 34332 68346 29 Boeing 100 Spont 15316 224324 453361603 nin Tninoton 30330 43338 90 6212037 39 LoOk Licknog P 39 Gee P38AFlghEn 184315 28 20 56334 I 2 25 VgE CoeD 0281/4 08320 27 28 38 Con CoElna PBY5o 52 48 78 60S04I~1A 19 Coctien NC4 624366 94089 17 Fekken 57 Ftc 14312 21316 8 o4349 31 Baylen GeeBee 114312 17314 35332T4344 75356 13 Sepenolanlon 068 15310 44432616038 8952 36 GroIn GolOhank 144314 214388 43$38 SCALE PLAN 35 Look Electra #11 27325 60332 55338 Look Slow 34 43 GroIn nengen TRE 30328 40 338 803 2 Fond 3M 4AT6 42 Roe B17G FlyFoct 51345 77 35 Roe 8170 36 38 NA MItohell 825 364337 55352 NA 525 36 34 MnoolCato088C72 154315 23322 454335 MeG N 826 6 37 Con Navy 003C1 19318 284324 57336 lEOn Tnt 4 25 CRaoen R3C-1 &2 11 315 164320 3 3 Nod1yPo e 6 34 Doog Tonoep SC3 47340 71 350oo 6 33 ConE Hawk P6E 154315 234322 47 4 32 Doolittle GB#11 124317 184322 37e335 49 46 74338 31 Bee P48344 P12B 15316 224320 444332 394 44 B9358 32 Spefld BollDog 134316 20320 40e332 53580358 32 Howard Ske&SBlke 104312 154315 31326 62345 34 Tocoeca 800cc 13312 194316 39 328 5- 340 78352 35 Now Molligan 16 315 234320 47332 64 44 94 56 33 Boa P26A Low Hog 14315 21 320 42332 63 45 84 58 35 Stlneen TSI SR7 204316 314325 42 58 Mooqolte Book 374324 41335 B1350408e365 37 Steceseen PTi16 318 244322 49 39 43 N Bik Widow P61 33340 494350 99 75 30 TAOES Nwke Ten13 144383 214318 43 36 86 42 CHelldive 5B2C4 25325 374335 26 Fond Teimote 4AT 38338 57 348 31 Ballano AlE Ron 32 322 48 330 96 52 33 Gnome J2F look194S28 29 340 58355 N 36N 27 CSeakawk F7C1 154318 234324 47338 6J35Q94e 83 28 SIk AopkLk S38 36$34 543424082B042U 16 8Pge 0-400 Rosob 55345 75956 31 Liedys LSinloe 21316 314322 B 336 31 Howard BaoPete 10312 15315 30330 0342 31 C Spackuk F9C2 124315 19322 38332 5543 8176358 33 Aceonca 13 Opt 18310 27314 534326 48 38 Toenone peeco Op 124316 184320 37336 rIght Ellen204318 304324 604838 5 AD BEPOBE ORDERING* 3/6 SCALE 1732 NILEI MT EESAIM 08088315 00PLANS AVAILABLE AT ONI 80 SURE TO ASS THE 120U GOLLAIT UNOER1I24 SIZE AL 1O7 FOR PACKAGINGIi IESFORA1L DESIGN POSTAGE ANS INOOSANCE ABOUT THOUSAND ADGITI4 PLINS MANY SIZES 75 CATALOG 3200 58 SS LIST ALONE 31. 55 AIR FOBEIGS 33 eveana e uppy 0 Edeerd 0 PeckedOnIaIiolS Nest FrIondSleoS IRIS".eP"P" 9800B BETNOI ANEN EEl LIONS 810 4 552O 5000 Snipe/Gilgenbach Continued page 128 aircraft should taxied familiarize yourself its groundhandling characteristics After running engine cycling radio taxiing check linkage connec tors nuts bolts tightness find loose components dont just retighten determine loosened take corrective action such gluing using Loctite PREFLIGHT Once became familiar operating characteristics aircraft confident everything functioning properly ready take long lonely drive flying field new model recommend following Dont go flying field day will crowded Dont take lot friends Arrange have just two helpersan experienced model builderlpilot good camcorder operator Videotape entire flying session includ aig preflight weather adverse cancel wait another day Conduct preflight inspection Check linkages connectors inspect control surfaces direction travel amount throw run engine different attitudes range-check radio FLIGHT PLAN developed flight plan would know exactly what intended would have contingencies something went wrong flight plan steps 1 Take off northwest wind flying field went has approximately 1/ mile grass direction engine died takeoff could land wind attempting tarn 2 At approximately 200 feet altitude 200 yards distance perform 180 right-hand turn 3 Climb 300 feet fly 400 yards southeast 4 Perform left-hand procedure turn 5 Fly 400 yards northwest trim controls perform right-hand procedure turn 6 Fly 400 yards southeast 7 Repeat steps 4 through 6 several times trying both high low rates elevator ailerons verbally noting control response helper video camera 8 Test flight characteristics aircraft flaps down 9 Enter right-hand landing pattern land aircraft flaps down possible After first flight inspected linkages nuts bolts connectorsnothing fallen off prototype proved quite stable too responsive controls low rate interesting activating flaps produced no pitching tendency 25 flaps engine idle landing relatively slow considering fueled aircraft weighed 25 pounds second flight explored aircrafts aerobatic characteristics surprise performed very much like pattern ship landing flaps disastrous however model caught wing tip damaging left wing nose gear After second flight checked model cleaned folded wings packed up went home review videotape video recording proved invaluable project guess thats have flight recorders airliners video showed second landing flared too soon too much causing right wing drop slighfly overcorrected models left wing hit ground After further analysis causes obvious still too much elevator aileron throw CG 28% flying skills rusty subsequent days checked out stall spin characteristics different weights CG locations TEST RESULTS 1 model flies well CG 25% 2 drooped wing tips stall DC Flight Training Beginner advanced tailored individual long-time modeler full size airplane flight instruc tor will make progress fun easy during week stay beautiful far western North Carolina Write call information RC Flight Training Rm 1704 38949GB 174 Model Aviation scale kits engines accessories want &you want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HES 1387 N Military Trail West Palm Beach FL 3340 407-68841669 HOBBY SUPER IUKL straight no tendency snap roll drop wing tip 3 slow ground speeds difficult turn model steerable nose wheel individual main gear brakes 4 ABS skin does vibrate excessively regardless engine rpm 5 Theoretically model should fly well 34 pounds hut have yet test theory 6 Elevator trim changes required flaps activated 7 Landings docile 200 400 flaps Forty degrees flap quickly slows plane greatly increases rate descent 8 No control flutter encountered 9 aircraft will spin CG less 20% full control travel CONCLUSIONS project would have successful help encouragement individuals organizations strongly recommend modelers patronize manufacturers distributors mentioned article Further wish thank flight assistantsGus Rebensburg Jerry Reichow Duncan Stewartfor time effort Based test results am now con fident feasible develop full-scale Snipe As am detail-designing big Snipe will continue use -scale model test different features building techniques cant wait get started bending tin summer 1998 Ill let know full-scale aircraft flies leads final question build full-scale model prototype -scale aircraft can enter sanctioned AMA scale contest lope SoaringlByors Continued page 106 required servo fact typical microservo will extend retract landing gear well open landing gear doors Gene has also designed over-center system retractable landing gear landing no force transmitted servo might strip servos gears over-center system also works retracted mode wheels inertia cannot throw gear out open ruggedness retract system surprising Gene has tested gear design doing push-ups install gear builder custom-fits fuselage between two bulkheads installation method serves two purposes First bulkhead mounting provides very rugged attachment inside fuselage gear cannot broken loose landing impact mounting system lets builder adjust depth wheel extension through fuselage Now meticulous scale builder want best retractable gear money can buy Cope retract probably worth considering Gene offers retract two sizes has -scale version currenfly priced $125 Cope also offers supersize -scale retract will handle really big birds tells sometime not-too-distant future will offering -scale model too Cope Retracts can contacted 32031/2 Main St Union Gap WA 98903 telephone number 509 457-9017 modelers friends contacted during month Mr Darrel Johnson Mesa Arizona suggested discuss balance models Well perfectly honest sometimes just mount model atop left right index fingers quick dirty Other times ever procedure bit exacting use balance stand balance stand simple device can built just few minutes aid good old Hot Stuff similar product stand built -inch plywood other plywood approximately size drawing outlines construction shows supporting fillets keep stand breaking large load applied drawing also details round edge stand upon model placed reason use stand quite obvious want obtain balance point model accurately possible stand much easier Using fingers balance model turns procedure somewhat juggling act However can place model stand make weight VIDEO_____ JOY OF FLYING FREE very informative 42 minute VHS video displaying phenomena free flight its variations great PR video can used effectively educate uninitiated art model aviation video professionally produced National Free Flight Society features both indoor outdoor activity available NIFFS 1655 Revere Drive Brookfield WI 53045 * Include Check $2500 plus $300 P&H per tape Buy 4 VgPEOS FREE #17 92 SCALEMASTER CHAMPS STAR MUS PIMA AIR MUS ALABAMA 2 Hrn.$1995 #16 AIRCRAFT GUNTERSYILLE AL AVAL AIR MUS PENSACOLA FL 2 Hn.51996 #1 592 WORLD SCALE CHAMPSAMA INVTL SHOOTOUT W INTL SCALEMASTERS 2 Hn.$1995 #1492 NW SEAPLANE CHAMPS EN SCALE AVIATION IN AUSTRALIA2 Hm.$1995 3 op Gun Invitari oledo Model topo s Air Museum2 Nra. 51996 #12- 91 Scalemasters tao Vegas 91 DSAA Las Vegas 91 NWlntl2 Hre.$1916 C #11 Scalemaster Aircraft Preview Mfg Visdw1tlan Parsons- 91 NWteaplanethamps 2 Kn.S1996 Z#1O 91 Tup Gun W Palm Bch Fl SsA Lao Vegas W Model topu2 Iin.$1996 90 Scalemasters Champs Irving TX hidbey 101 Scalemos5ers an Diego Aerospace Moo 2 Hra.51996 90 NW Intl Scalemasters Farragot Park-Athol ID m Champlin Fighter Museum w/tou Proctor W Seaplane ps Santa Monica Mos Flying 2 Mn. 51995 #7 op Gun Invitational Mesa AZ W Model Eupo2 Hrs.$1995 #6 89 Scalemasters Champs St Louis ake lianaso m Schneider Cop Races2 IIrs.$19gG 89 US NaIls Scale & Seaplanes 89 NW Seaplane Champs Planes Fame taut Moo Moo DshkoshVisit mw/Ralph Beck Chicago Mo Sci & Ind 2 Hs.$1995 #4 09 Top Gon Champo Coral Springs FL tor Albatroo DVA Preview atIs Seaplane Site NW ntl oScalemasters tor N-li Test Flight 2 Hre.S1I96 IA Special Edition Proctor Enterprises Atbatroo OVA Brief Conotr Engine Radio Irrntall& Teat Ftigbto 2 Hra $1996 Cuetias JN4D Jenny Plan FUN SCALE 109 inches 1804 sq 11 lbs 8 sheets w/instroctions 51996 10807 SE STACY CT PORTLAND OR 97266 PHONE 503653-25780 FAX 503 6781342 SEND STAMP FOR COMPLETE LIST PAL & SECAM ORDERS CONCEPTS 17 MILPERA CRESCENT WANTIRNA VIC 3152 AUSTRALIA e 03801-3899 03887-3472 BETA CARLSON ENGINE IMPORTS 814 East Marconi Phoenix AZ 85022-3112 IMPORTED DIESEL ENGINES Worlds Best Selection AE AM Aurora Cipolla D-C KMD MAP Mikro MK MWS Oliver PAW Pfeffer Silver Swallow USE Also Replica Mills MOVO Letmo diesels rare imported glow engines CO motor sets Ten page catalog 1 00 May1993 175
Edition: Model Aviation - 1993/05
Page Numbers: 56, 57, 59, 60, 61, 62, 123, 126, 127, 128, 174, 175
PART TWO LAST MONTH explained steps required design full-scale homebuilt aircraft also gave reasons believe -scale RC model design should built tested month design construction testing model will discussed MATERIAL AND HARDWARE SELECTION goal pick good quality readily available products would allow simulation assembly processes would use building full-scale aircraft model aircraft substructure chose use plywoodaircraft quality Lite Plyand balsa such critical areas wing spars landing gear wing folding joints used aluminum and/or 4130N steel depending strength requirements skinning aircraft used 0 10inch-thick ABS plastic should give good indication what will encounter skinning fullscale aircraft 016- 040-inch-thick aluminum sheet needed use adhesives could bond plywood balsa Styrofoam fiberglass steel aluminum ABS plastic Satellite City able meet requirements UFO Thin UFO Thick adhesives plus Hot Shot Kick-It accelerators instant bonding necessary UFO Thin worked well UFO Thick allows repositioning parts before adhesive sets especially important during skinning process feature appreciate about UFO doesnt give off irritating gas some CyA glues Du-Bro Products has complete line quality hardware items including scale wheels hinges control horns pushrods wheel collars blind nuts etc used Du-Bro hardware wherever possible pushrodl clevis assemblies coil spring locks used control surfaces ensure safe reliable connections ENGINE SELECTION different engine types sizes considered before made final selection objective ability swing 18 x 10 prop approximately 7000 rpm didnt want use gasoline fuel because its relatively dangerous handling characteristics considered methanol-burning engines several multicylinder engines could have done job initial cost prohibitive single-cylinder methanol-burning engines available OPS 30 Maxi Shamrock Competition Imports Inc offers best value Its powerful engine has good starting idling transition throttling characteristics Other appealing features muffler locations flexibility engines light weight converted leaf-blower engine specifically designed power model aircraft 15- 22pound range Although ringed engine manufacturer still recommends breaking about hour no problem meI always run engines quite familiarize myself ensure everything functioning properly before taking air 56 Model Aviation month previewed full-scale Snipe Now lets build model U James Gilgenbach selected Cool Power Tartan/Bully fuel specifically blended engine size type have excellent results Cool Power past application no exception Another benefit using Cool Power opposed factoryrecommended 5% castor oil 95% methanol added rust] corrosion protection wanted lightweight three-inch-diameter aluminum spinner would fit OPS 30 Maxi look good Tm-Turn TT-300B proved excellent selection modified TT-300B cutting slots fit 18 x 10 prop Tm-Turn has big scale spinner available doesnt require drilling backplate engine drive pins drilling tapping prop washer prop backplate two 6-32 bolts drilling tapping OPS 30 Maxi prop nut 10-32 spinner bolt modifications lock prop engine fashion similar used full-scale aircraft Both Zinger wood props Dynathrust composite props performed well props OPS 30 Maxi turned following rpm 18 x 6 18 x 8 18 x 10 18 x 8/14 20 x 8 Zinger 8100 rpm 7500 rpm 6800 rpm 6200 rpm 5800rpm 18 x 8 18 x 10 Dynathrust 7400 rpm 6700 rpm RADIO SELECTION Futaba 7UAP radio control system offers options required handle -scale Snipe options include following 1 Ailerons separate S148 servos aileron Y connector AEC 4 b Extensions AEC 11 2 Elevator 8134 -scale servo 3 Rudder S 134 -scale servo 4 Flaps S134 -scale servo 5 Throttle S148 servo 6 Elevator trim tab S148 servo 7 Airborne battery pack NR-4LB 1000 mAb Type 114-scaIe test model Wingspan 76 inches Recommended motor size type OPS 30 Maxi Number RC channels recommended Six Expected flying weight 25 pounds Type construction Built-up Type of covering finish recommended ABS plastic skin K&B Super Poxy May1993 57 crashcomponents shown prior assembly model can readily stripped down necessary shipping storage Models skin 010 ABS plastic ne cowl canopy hatch open just will fullscale aircraft allowing access instruments Full Size Plans AvailableSee Page 184 -- - LIQ 8 Charger FBC-6B4 programmable transmitter allows fine-tuning flight controls need modify mechanical linkages feature saved least 20 hours trialand-error testing also like built-in timer can used monitor long radio has discharging servos tight thus eliminating control drift need constantly change trim MODEL CONSTRUCTION SEQUENCE basic steps build model follows 1 Build skin horizontal vertical stabilizers elevator rudder 2 Build fuselage including console turtledeck top Build engine/nosewbeel mount 3 Make landing gear parts steel spar caps 4 Build center wing section 5 Build outer wing sectionsleave top spar cap loose 6 Assemble wing sections adjust dihedral 7 Make install flaps ailerons 8 Fit wing horizontal vertical stabilizers fuselage 9 Install engine muffler nose gear 10 Install aileron servos make hatches 11 Skin fuselage interior Make install turtledeck front fuselage top May1993 59 L Steel weights hold bottom fuselage side skin placeTwo 6-32 bolts two 2-56 bolts attach removable until UFO Thick sets up Fuselage longerons used keyempennage fuselage control surfaces use music wire alignment surfaceshinge pins easy assembly/disassembly bulkhead stiffens center section Futaba S148 servo mounted canopy frame has temporary cross fuselage Empennage control rods wing section actuate ailerons Most braces added until Plexiglas canopy cables run through center console wing ribs 18 Lite Ply glued screwed place I1__ __I eJKL F V K ~~o V r 1 K JK C- IF 7 3 F F MATE1AS 4_ EM E empennage fairing 12 Make fit cowl canopy 13 Skin remaining parts model 14 Install rest radio components balance model 15 Paint accessories add trim EMPENNAGE substructure empennage made balsa Lite Ply assembly can done using variety accepted tech niques chose drill holes through ribs use music wire rods alignment Although elevator has separate trim tab model does need normal RC flying empennage assembly attached fuselage two 6-32 bolts two 2-56 bolts can removed storage maintenance tips rudder elevator have lead added balance control surfaces covered white Super MonoKote glued control surfaces IJFO FUSELAGE fuselage built upside down plans top cowling turtledeck added later Overall alignment critical 60 Model Aviation ofoam glued cowl frame sanded shape cowl assembly removed fuselage fibergiassed six-ounce cloth Hobbypoxy Formula 2 lsa frame used locate cowl engine OPS 30 Maxi runs very coola streamlined cowl could have added around cylinder head order determine best skinning process started making empennage messed up skinning replacement vertical horizontal stabilizer substruc ture would traumatic wing substructure replacement OPS 30 Maxi excellent choice power Snipe pulls model Toothpick pins added elevator hinges due location beneath through maneuver effort models skin Trim tab prototype necessary normal flying uI 4\ w -J IV\ -\ May1993 61 producing good-flying aircraft have found several tools invaluable es tablishing alignment follows 1 Steel squaring blocks least three required 2 12-in combination square/level 3 6-in machinists scale 4 72-in straightedge/scale 5 16-in x 24-in carpenters square 6 Incidence meter 7 Wing horizontal stabilizer airfoil tem plates 1/s-in plywood coated UFO Thin 8 Flat work table 2 ft x 5 ft minimum 9 0-clamps 10 T-pins 11 Masking tape 12 Alignment/building fixtures gauges Explaining use tools could consume enough pages 62 Model Aviation * Vertical stabilizer rudder built simple fixture holds wing place Root ribs stiffened 1/16-in balsa directly over plans Rudder post during skinning operation skin sheeting Spar caps 025 4130N steel features full-length music wire pin gives wing much its rigidity laminated between 1/ie ply 1/i6 balsa wing skin attached leading edge contact Completed skin looks beautiful fixture eliminates wing twist cement prevent cracking over period time UFO adheres skin misalignment Wings have degree washout skin balance structure built Continued page 123 original torsion bar nosewheel Without skin Snipes structure very flimsy just like its full-scale allowed nose dip too much high brothers text contains complete skinning instructions grass fields plans show fixed gear 24 N NIPE Snipe/Gilgenbach Continued page 62 separate article will detail use However several rules thumb should followed concerning alignment First never check alignment dimension once Check over several times preferably several different ways Second dont get engrossed details forget basics example making two left wings Third eyeball alignments look wrong probably Fourth add temporary braces structures flimsy until structures covered skinned fuselage main structure alignments set top longerons should used starting point alignments Wing dihedral incidence well horizontal stabilizer incidence parallelism should set reference longerons LANDING GEAR debated whether present details scale landing gear article drawings full-scale gear will use torsion bars hydraulic shock absorbers intent minimize weight full-scale gear yet still provide good shockabsorbing qualities different approaches can taken meet criteria want learn book Landing Gear Design Light Aircraft L Pazmany excellent source concluded gear far too complex anyone just wants goodflying less-than-exact-scale model took several hundred hours design machine parts milling/drilling machine metal lathe went through exercise because needed develop knowledge build fullscale aircraft gear recommend model referred Wittman-type gear because Steve Wittman originally developed full-scale aircraft aircraft use expensive high-alloy steel gear legs Continued page 126 May1993 123 original landing gear somewhat complex intended simulate full-scale gear much-simplified Wittman-type gear design made 1/4-inch-diameter music wire shown plans swivel joint machined allow prototypes wings fold Wing pins #6 tapered complex feature shown plansremovable panels have substituted OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLAYBOY SR KIT 112A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $330 STOCK ORDERS SHIPPED WITHIN 24 HRS W Composites fiberglass experts video shows descnbes easy use composites construct basic lamination 1993 catalog included $5-off coupon towards first order Approximately 60 minutes Only $2495 plus $450 shipping handlingi Z e Glast Developments Corporalion 800 821-3283 SnipelGilgenbach Continued page 123 modelers have material available strong yet less expensive music wire truly amazing steel Most model aircraft use gear type because simple durable WING models wing made simulate folding feature full-scale aircraft practical standpoint however normal model would need removable wing panels what Ive shown plans prototype model used #6 tapered pins hold wing sections together feature required some difficult machining plans show hex-head cap screw nylon-insert locknut unusual feature wing design use 025-in-thick x 75-inwide 4130N steel wing spar caps wing designed handle 9OG 45G ultimate loadsthe loads structural failure occurs full-scale aircraft would exceed loads 6OG 3OG under normal aerobatic conditions model haphazard flying tech niques possible attain much higher loads Therefore prudence must exercised flying model Wing construction simplified through use wing fixture notched front rear spar webs building sequence follows 1 Make wing fixture using miscellaneous pieces lumber have around workshop Make spars ribs 2 Cut 14 steel spar caps six long eight short length radius ends drill mounting lightening holes deburr sand 3 Cut out A6 x 3/4 plywood Aa x 3/4 balsa spar caps glue steel caps outer wing panels using UFO Thick 4 Cut out notch plywood spar webs Make sure webs fit snugly wing fixture 5 Using UFO Thick glue boltom outer front wing spar caps wing webs 6 Clamp outer wing panel front spar assemblies fixture position rear spar web ribs fixture 7 Align ribs glue spar webs Note glue top front spar cap yet 8 Glue leading edge front ribs 9 Glue rear plywood spar caps ribs rear spar web remove assembly fixture 10 Screw bottom outer main spar caps wing web block 11 Repeat operations 6 through 10 other outer wing panel 12 Glue 1/16 x 3/4 plywood balsa spar caps center wing steel spar cap 13 Glue plywood front spar web center bottom front spar cap assembly 14 Clamp assembly fixture position rear spar web ribs fixture 15 Align ribs vertically using square glue spar webs glue two end ribs lime 16 Glue top front spar cap ribs spar web 17 Glue leading edge two rear plywood spar caps ribs rear spar web Remove assembly fixture 18 Screw spar caps wing web block 19 Glue four wing-locating dowels place outer wing panels 20 Assemble outer wing panels center wing panel adjust dihedral angles sliding top wing spar caps outer panels 21 Clamp two end ribs center wing section two end ribs outer wing sections 020-in-thick shims between ribs shims thickness two pieces 010 ABS plastic 22 Glue top outer wing spar caps center section outer ribs place 23 Screw top outer wing spar caps wing web blocks 24 Shape sand leading edges three wing panels match ailerons flaps can built over plans flat surface intercon necting flap swivel tubes should aligned glued swivel joint installed flap sections aligned wing retracted position Note control surfaces use music wire through hinges easy assembly disassembly models wing tips made balsa plywood bolted outer wing rib two 6-32 socket-head cap screws could also glued place intend try several different wing tip types deter give best stall characteristics CANOPY canopy made heating stretch ing 040-in Plexiglas over plug follows 1 Make plug wood coat epoxy 2 Sand epoxy smooth texture surface will transfer directly inside canopy formed 3 Attach handles two sides Plexi glas sheet 4 Heat sheet plug oven until Plexiglas starts sag 5 Remove both oven stretch Plexiglas over plug repeated process several times get final shape 6 Make canopy frame 7 Trim attach canopy frame using UFO #1 flat-head wood screws COWL AND WHEEL PANTS Make cowl following sequence 1 Cut out plywood cowl framework 126 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPS! PROMPT SHIPMENT ON VISAdMC SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 2 Glue framework several Styrofoam blocks 3 Cut sand Styrofoam shape 4 Cover assembly layer six-oz fiberglass cloth used Hobbypoxy Formula 2 bond fill cloth 5 After epoxy hardwait least daytrim off excess fiberglass sand rough edges high points apply heavy coat Hobbypoxy mixed 50/50 microballoons 6 Wait least day rough sand outer surface shape 7 Split cowl hollow out Styro foam leave 3A-in-thick Styrofoam wall inside half 8 Sand Styrofoam wail smooth apply layer six-oz fiberglass inside half 9 Wait another day trim sand excess fiberglass Add hinges holddown latches hinges T-pins 10 Reassemble two halves finish sanding cowl halves exceptionally rigid assure good fit attached cowl fuselage matchsanded Remember compensate 0l0-in-thick ABS fuselage skin wheel pants can made forming Styrofoam plug covering two layers six-oz fiberglass coating fiberglass 50/50 epoxy/microballoon mix sanding shape hollowing out Styrofoam SKINNING PAINT AND TRIM Sand contour stabilizer smooth Remove dust loose particles Cut out 010-in ABS plastic skin slighfly larger area covered Cut skin wrap around leading edge allow enough stock overlap leading edge control surface stabilizers trailing edge Place skin onto hot approximately lOOT flat surface tape down end used wifes glass-topped dining room table space heater underside glass necessary skin will tight normal room temperature Run bead UFO Thick trailing edge ribs up leading edge top side horizontal stabilizer Start ing top gives better chance spot misalignment skin best part skinning job visible can start either side vertical stabilizer Press trailing edge onto skin leaving h-in overhang Roll stabilizer skin toward leading edge pulling stabilizer toward yourself keep skin taut Remember taped opposite edge glass table Hold pressure assembly about minute UFO sets Remove assembly table apply UFO Thick leading edge top front bottom Tape skin table again roll skin around leading edge making sure skin tight Hold pressure assembly about minute Remove assembly table skin should now glued tightly around leading edge Now apply UFO Thick ribs trailing edge remaining side Tape edge skin table roll stabilizer onto skin Hold pressure assembly about minute Remove structure table trim edges sharp knife sanding block structure cools should stiff tight skin exposed rib sides can covered ABS plastic paint commercially available heat-shrinkable plastic covering may used skin folded trailing edges elevator rudder yields goodlooking straight trailing edges Folding ABS plastic can present problem however following technique should used 1 Build sand control surface Remove loose particles 2 Cut ABS skin slightly larger required 3 Lay thin 025-in steel straightedge onto skin fold line weight clamp down end 4 hard pencil draw trailing edge fold line Push down hard pencil plastic scored scratched 5 Fold skin over straightedge creating 1800 bend 6 Remove straightedge fold skin flat fold line should now straight 7 Tape top side skin heated glass table 8 Apply UFO Thick top side control surface substructure 9 Position substructure onto skin Press roll attach skin Hold pressure assembly about minute 10 Remove assembly table apply UFO Thick opposite side substructure 11 Repeat operation 9 opposite side 12 Trim off excess skin rudder rolled skin halfway around leading edge side elevator covered leading edge separately wing panels subsequently skinned using same procedure horizontal stabilizer ailerons flaps skinned using same procedure elevator fuselage sides skinned first turtledeck finally bottom using basically same techniquesplacing skin warm worktable applying UFO Thick structure pressing rolling structure skin Through trial error Ive learned several interesting things working 010 ABS plastic accidentally spill epoxy plastic denatured alcohol will remove epoxy damaging plastic Once P-40 WARHA WK Made USA SPECIFICATIONS WINGSPAN 60 ENGINE SUE60 2-EEROKE WEIGIfT7-8 LBS IIV7RO PRiCE$16000 ALL KITS FEATURE BAND LAID FIBERGLASS FUSEIAGEPANEL UNES SCALE DETAILSFOAM CORE WINGS MACHINE CITE FORMERS & BULKHEADS SEE YOUR LOCAL DEALER OR CALL HOBBY IL4NGAR 606-2&3-5 746 FOR IMMEDIATE DEUVERY DE4LER INQUIRIES WELCOME WEACCEPT VISA MASTERCARD & DISCOVER CARDS WEGLADLYSHIP COD SHIPPING 114 NDUNG $309 PER KIT CONTINENTAL USA OilIER AREAS CALL KE VCKY RESIDENIS ADD 6% SALES TAX HOBBY HANGAR ISA FULL SERVICE HOBBY SHOP WITH OVER 11000 ITEMS IN STOCI CATALOGS VAILABLE $400 EACH WIREBATE ON FIRST ORDER SPECIITE PIANEHELICOPTER OR CAR HANGAR EXaUCSIVEDISTRWTCW FIBER SCALE MODELS 153 LLOYD AVE R2VDW KY 41042 606-283-5746 IYW 606-2853889 FAX May1993 127 FOCKE WULF 190 Made USA SPECIFICATIONS WINGSPAN 65 ENGINE SIZE6090 2-SISOKE 90-120 4-SEROKE WEIGIIr9-10 LBS IPTERO PRICE SPECIFICATIONS WINGSPAN 60 ENGINE SIZE WEIGhT 60 2-SIROKE 8-ES LBS CESSNA 150Made USA SPEClFICATIONS WINGSPAN 65 ENGINE SUE WEIGHT 45-60 2-SEROKE 7-75 LBS QUALIT WTEGITY SRV1CE QJLALTr INTEGUTY SiR VICE QJJALIrY INTEGRITY SERVICE 5~ tJ uJ GRTYSER VICE 3950-AValIeyBIvd WALNUT CA 91789 Li w A T PE RR 0 0 F ci C S T FA R N ED EI N G U 01 O0 0 IIEAm OOD Jo C PLME 0' U SHADE 51g-i5 ni CALL OR WRITE FOR FREE BROCHURE Pitts-Style Mufflers UNIVERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2185 SI-SI IT-GOP $2385 MOKI 61 JT-MK61P 52595 UNIVERSAL 9OlT ON Side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts supplied muffler JT-40P8 29-45 $2285 JT-A91PASP 1002995 JT-F74PFOX 742995 JT-M100PMAXOl-lOS2995 JT-BGXPMAX BGXI3495 JT-5T69PST 61-75-902995 JT-ST25PST 25-30002995 JT-MK150PMOKI 153495 JT JT-W12OPWEBRA 1202995 5161 ZJTECI MAIL ORDER se add $255 UPS shippIng Check MO Visa MC COO accepted Add $400 extra COD California residents add 8% sales tax 255 Eat Alillorld/FO 8xx727/Sodo Springs dubs 82276 ULTIMATESPORT RC UlTIMATE 5-305 Mlii12085473742F F,nh5ed 5555 epoxy sets will have lot trouble removing may have sand off Removing UFO ABS plastic tricky Put small amount Zap Z-7 Debonder onto clean rag lightly wipe over UFO rub too hard too long Z-7 will cut plastic dull surface Z-7 can bring back shine Turtle Wax white automotive polishing compound Sooner later will scratch ABS skin occurs scratches can removed sanding 1200-grit wet-ordry sandpaper rubbing polishing compound sanding rubbing skin dont push too hard skin may crack attached structure plastic can shrunk using heat gun also very easy melt will shrink enough force warp substructure dont recommend heatshrinking minimize wrinlding sunlight plastic should preheated before installation K&B thinner cuts ABS plastic K&B epoxy sticks well especially thinned Conversely dont use K&B thinner cleanupuse denatured alcohol miscellaneous parts painted K&B primer K&B Super Poxy parts made plywood balsa spruce steel aluminum brass epoxy fiberglass resin ABS plastic Ive never found paint sands holds up better K&B worked equally well over materials order save weight time chose paint entire aircraft However did sand polish skin blemishes scratches used Jumbo Stripe Kit Eagle Products trim model decals easy install durable look good Eagle Products offers several different color schemes can individualize aircraft Personally like fluorescent pink/blue/purple combination TESTINGAT HOME Before taking new model flying field several things should always done First check center gravity CG should between 23% 27% wing chord first few flights flown CG 28% would recommend adding weight nose necessary get CG 25% wing chord engine should test run aircraft set up different attitudes eg nose up nose down inverted uprightto check run consistency radio equipment should actively cycled hour recharged cycled again hour test will also reveal control surface/linkage hang-ups radio must range-checked both engine running stopped Dont forget tie down plane Continued page 174 128 Model Aviation uSt extensions worm drive mounting strap Included MGLASS ALES INC W Fiberglass Headquarters * BUY DIRECT * Super Bond S mit Epony Epoxy Lsminxting Resins Cyanoacrylate Adhesives Glones ective Hand Creams Masits ns Polyester Resin al SprayerLaminating Bnsshes ers Acetate Fiberglass Fiilers Tongue Depressom Mioing Paddles sive Discs Sandpaper Foam Brushes Fine-Weave Median Heaxy Weight cloth ar on Fibers TECHNICAL INFORMATION Kenlar Tap. snarbon fib, tap. CALITOLL FREE earbon tiber tand available IMI WI ors ul 1-800-589-4444 18621 8 Nne MileRoad EastpointuMichigsn48O2l 313 777-2032Fax 313 7770350 Foao Flnis 5da, AI~ Lon4g Osar clerr Conopy Aailabl e,iIde KjI S255~ shasred Kr S5u5~Olna Sheered KI SUSS Over 70 Kits Fox Engines best prices FREE CATALOG DoCs Generix Controline P0 BOX 111 Jasonville IN 47438 Tel 812-665-3723 WORLDS LARGEST SCALE PLANS & DOCUMENTATN SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS ze 120 PAGE CATALOG 55 00 USA & CANADA StOQO AIR OVERSEAS Jim Pepmnos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE NSBORO NC 27403 292-5239 WORLDSMOSPAOTNEMTI MOD PLANSALL PATTERNS INCLUDED SCALEOFPL&NS*-DSFOPOP OP RSABBBEVIATED NAME 1/SASZ 1/L6SZ 1/B SE 1/6 SZ 1/4SZ 37 OeHov Cootec Rone 22320 324332 66344 132068 40 Vooght Cone P45 20320 30326 60345 15 Con JN4S Jenny 21318 32324 65$38 86 352 27 Llodbeoge 80211 15314 34 324 69334 91348 29 Wano TaperWing I5314 22 $20 45334 6034850362 36 Weatlod Lynanden 25319 37 324 75338 OA 2 35 Soog 046A Obon 23324 34332 68346 29 Boeing 100 Spont 15316 224324 453361603 nin Tninoton 30330 43338 90 6212037 39 LoOk Licknog P 39 Gee P38AFlghEn 184315 28 20 56334 I 2 25 VgE CoeD 0281/4 08320 27 28 38 Con CoElna PBY5o 52 48 78 60S04I~1A 19 Coctien NC4 624366 94089 17 Fekken 57 Ftc 14312 21316 8 o4349 31 Baylen GeeBee 114312 17314 35332T4344 75356 13 Sepenolanlon 068 15310 44432616038 8952 36 GroIn GolOhank 144314 214388 43$38 SCALE PLAN 35 Look Electra #11 27325 60332 55338 Look Slow 34 43 GroIn nengen TRE 30328 40 338 803 2 Fond 3M 4AT6 42 Roe B17G FlyFoct 51345 77 35 Roe 8170 36 38 NA MItohell 825 364337 55352 NA 525 36 34 MnoolCato088C72 154315 23322 454335 MeG N 826 6 37 Con Navy 003C1 19318 284324 57336 lEOn Tnt 4 25 CRaoen R3C-1 &2 11 315 164320 3 3 Nod1yPo e 6 34 Doog Tonoep SC3 47340 71 350oo 6 33 ConE Hawk P6E 154315 234322 47 4 32 Doolittle GB#11 124317 184322 37e335 49 46 74338 31 Bee P48344 P12B 15316 224320 444332 394 44 B9358 32 Spefld BollDog 134316 20320 40e332 53580358 32 Howard Ske&SBlke 104312 154315 31326 62345 34 Tocoeca 800cc 13312 194316 39 328 5- 340 78352 35 Now Molligan 16 315 234320 47332 64 44 94 56 33 Boa P26A Low Hog 14315 21 320 42332 63 45 84 58 35 Stlneen TSI SR7 204316 314325 42 58 Mooqolte Book 374324 41335 B1350408e365 37 Steceseen PTi16 318 244322 49 39 43 N Bik Widow P61 33340 494350 99 75 30 TAOES Nwke Ten13 144383 214318 43 36 86 42 CHelldive 5B2C4 25325 374335 26 Fond Teimote 4AT 38338 57 348 31 Ballano AlE Ron 32 322 48 330 96 52 33 Gnome J2F look194S28 29 340 58355 N 36N 27 CSeakawk F7C1 154318 234324 47338 6J35Q94e 83 28 SIk AopkLk S38 36$34 543424082B042U 16 8Pge 0-400 Rosob 55345 75956 31 Liedys LSinloe 21316 314322 B 336 31 Howard BaoPete 10312 15315 30330 0342 31 C Spackuk F9C2 124315 19322 38332 5543 8176358 33 Aceonca 13 Opt 18310 27314 534326 48 38 Toenone peeco Op 124316 184320 37336 rIght Ellen204318 304324 604838 5 AD BEPOBE ORDERING* 3/6 SCALE 1732 NILEI MT EESAIM 08088315 00PLANS AVAILABLE AT ONI 80 SURE TO ASS THE 120U GOLLAIT UNOER1I24 SIZE AL 1O7 FOR PACKAGINGIi IESFORA1L DESIGN POSTAGE ANS INOOSANCE ABOUT THOUSAND ADGITI4 PLINS MANY SIZES 75 CATALOG 3200 58 SS LIST ALONE 31. 55 AIR FOBEIGS 33 eveana e uppy 0 Edeerd 0 PeckedOnIaIiolS Nest FrIondSleoS IRIS".eP"P" 9800B BETNOI ANEN EEl LIONS 810 4 552O 5000 Snipe/Gilgenbach Continued page 128 aircraft should taxied familiarize yourself its groundhandling characteristics After running engine cycling radio taxiing check linkage connec tors nuts bolts tightness find loose components dont just retighten determine loosened take corrective action such gluing using Loctite PREFLIGHT Once became familiar operating characteristics aircraft confident everything functioning properly ready take long lonely drive flying field new model recommend following Dont go flying field day will crowded Dont take lot friends Arrange have just two helpersan experienced model builderlpilot good camcorder operator Videotape entire flying session includ aig preflight weather adverse cancel wait another day Conduct preflight inspection Check linkages connectors inspect control surfaces direction travel amount throw run engine different attitudes range-check radio FLIGHT PLAN developed flight plan would know exactly what intended would have contingencies something went wrong flight plan steps 1 Take off northwest wind flying field went has approximately 1/ mile grass direction engine died takeoff could land wind attempting tarn 2 At approximately 200 feet altitude 200 yards distance perform 180 right-hand turn 3 Climb 300 feet fly 400 yards southeast 4 Perform left-hand procedure turn 5 Fly 400 yards northwest trim controls perform right-hand procedure turn 6 Fly 400 yards southeast 7 Repeat steps 4 through 6 several times trying both high low rates elevator ailerons verbally noting control response helper video camera 8 Test flight characteristics aircraft flaps down 9 Enter right-hand landing pattern land aircraft flaps down possible After first flight inspected linkages nuts bolts connectorsnothing fallen off prototype proved quite stable too responsive controls low rate interesting activating flaps produced no pitching tendency 25 flaps engine idle landing relatively slow considering fueled aircraft weighed 25 pounds second flight explored aircrafts aerobatic characteristics surprise performed very much like pattern ship landing flaps disastrous however model caught wing tip damaging left wing nose gear After second flight checked model cleaned folded wings packed up went home review videotape video recording proved invaluable project guess thats have flight recorders airliners video showed second landing flared too soon too much causing right wing drop slighfly overcorrected models left wing hit ground After further analysis causes obvious still too much elevator aileron throw CG 28% flying skills rusty subsequent days checked out stall spin characteristics different weights CG locations TEST RESULTS 1 model flies well CG 25% 2 drooped wing tips stall DC Flight Training Beginner advanced tailored individual long-time modeler full size airplane flight instruc tor will make progress fun easy during week stay beautiful far western North Carolina Write call information RC Flight Training Rm 1704 38949GB 174 Model Aviation scale kits engines accessories want &you want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HES 1387 N Military Trail West Palm Beach FL 3340 407-68841669 HOBBY SUPER IUKL straight no tendency snap roll drop wing tip 3 slow ground speeds difficult turn model steerable nose wheel individual main gear brakes 4 ABS skin does vibrate excessively regardless engine rpm 5 Theoretically model should fly well 34 pounds hut have yet test theory 6 Elevator trim changes required flaps activated 7 Landings docile 200 400 flaps Forty degrees flap quickly slows plane greatly increases rate descent 8 No control flutter encountered 9 aircraft will spin CG less 20% full control travel CONCLUSIONS project would have successful help encouragement individuals organizations strongly recommend modelers patronize manufacturers distributors mentioned article Further wish thank flight assistantsGus Rebensburg Jerry Reichow Duncan Stewartfor time effort Based test results am now con fident feasible develop full-scale Snipe As am detail-designing big Snipe will continue use -scale model test different features building techniques cant wait get started bending tin summer 1998 Ill let know full-scale aircraft flies leads final question build full-scale model prototype -scale aircraft can enter sanctioned AMA scale contest lope SoaringlByors Continued page 106 required servo fact typical microservo will extend retract landing gear well open landing gear doors Gene has also designed over-center system retractable landing gear landing no force transmitted servo might strip servos gears over-center system also works retracted mode wheels inertia cannot throw gear out open ruggedness retract system surprising Gene has tested gear design doing push-ups install gear builder custom-fits fuselage between two bulkheads installation method serves two purposes First bulkhead mounting provides very rugged attachment inside fuselage gear cannot broken loose landing impact mounting system lets builder adjust depth wheel extension through fuselage Now meticulous scale builder want best retractable gear money can buy Cope retract probably worth considering Gene offers retract two sizes has -scale version currenfly priced $125 Cope also offers supersize -scale retract will handle really big birds tells sometime not-too-distant future will offering -scale model too Cope Retracts can contacted 32031/2 Main St Union Gap WA 98903 telephone number 509 457-9017 modelers friends contacted during month Mr Darrel Johnson Mesa Arizona suggested discuss balance models Well perfectly honest sometimes just mount model atop left right index fingers quick dirty Other times ever procedure bit exacting use balance stand balance stand simple device can built just few minutes aid good old Hot Stuff similar product stand built -inch plywood other plywood approximately size drawing outlines construction shows supporting fillets keep stand breaking large load applied drawing also details round edge stand upon model placed reason use stand quite obvious want obtain balance point model accurately possible stand much easier Using fingers balance model turns procedure somewhat juggling act However can place model stand make weight VIDEO_____ JOY OF FLYING FREE very informative 42 minute VHS video displaying phenomena free flight its variations great PR video can used effectively educate uninitiated art model aviation video professionally produced National Free Flight Society features both indoor outdoor activity available NIFFS 1655 Revere Drive Brookfield WI 53045 * Include Check $2500 plus $300 P&H per tape Buy 4 VgPEOS FREE #17 92 SCALEMASTER CHAMPS STAR MUS PIMA AIR MUS ALABAMA 2 Hrn.$1995 #16 AIRCRAFT GUNTERSYILLE AL AVAL AIR MUS PENSACOLA FL 2 Hn.51996 #1 592 WORLD SCALE CHAMPSAMA INVTL SHOOTOUT W INTL SCALEMASTERS 2 Hn.$1995 #1492 NW SEAPLANE CHAMPS EN SCALE AVIATION IN AUSTRALIA2 Hm.$1995 3 op Gun Invitari oledo Model topo s Air Museum2 Nra. 51996 #12- 91 Scalemasters tao Vegas 91 DSAA Las Vegas 91 NWlntl2 Hre.$1916 C #11 Scalemaster Aircraft Preview Mfg Visdw1tlan Parsons- 91 NWteaplanethamps 2 Kn.S1996 Z#1O 91 Tup Gun W Palm Bch Fl SsA Lao Vegas W Model topu2 Iin.$1996 90 Scalemasters Champs Irving TX hidbey 101 Scalemos5ers an Diego Aerospace Moo 2 Hra.51996 90 NW Intl Scalemasters Farragot Park-Athol ID m Champlin Fighter Museum w/tou Proctor W Seaplane ps Santa Monica Mos Flying 2 Mn. 51995 #7 op Gun Invitational Mesa AZ W Model Eupo2 Hrs.$1995 #6 89 Scalemasters Champs St Louis ake lianaso m Schneider Cop Races2 IIrs.$19gG 89 US NaIls Scale & Seaplanes 89 NW Seaplane Champs Planes Fame taut Moo Moo DshkoshVisit mw/Ralph Beck Chicago Mo Sci & Ind 2 Hs.$1995 #4 09 Top Gon Champo Coral Springs FL tor Albatroo DVA Preview atIs Seaplane Site NW ntl oScalemasters tor N-li Test Flight 2 Hre.S1I96 IA Special Edition Proctor Enterprises Atbatroo OVA Brief Conotr Engine Radio Irrntall& Teat Ftigbto 2 Hra $1996 Cuetias JN4D Jenny Plan FUN SCALE 109 inches 1804 sq 11 lbs 8 sheets w/instroctions 51996 10807 SE STACY CT PORTLAND OR 97266 PHONE 503653-25780 FAX 503 6781342 SEND STAMP FOR COMPLETE LIST PAL & SECAM ORDERS CONCEPTS 17 MILPERA CRESCENT WANTIRNA VIC 3152 AUSTRALIA e 03801-3899 03887-3472 BETA CARLSON ENGINE IMPORTS 814 East Marconi Phoenix AZ 85022-3112 IMPORTED DIESEL ENGINES Worlds Best Selection AE AM Aurora Cipolla D-C KMD MAP Mikro MK MWS Oliver PAW Pfeffer Silver Swallow USE Also Replica Mills MOVO Letmo diesels rare imported glow engines CO motor sets Ten page catalog 1 00 May1993 175
Edition: Model Aviation - 1993/05
Page Numbers: 56, 57, 59, 60, 61, 62, 123, 126, 127, 128, 174, 175
PART TWO LAST MONTH explained steps required design full-scale homebuilt aircraft also gave reasons believe -scale RC model design should built tested month design construction testing model will discussed MATERIAL AND HARDWARE SELECTION goal pick good quality readily available products would allow simulation assembly processes would use building full-scale aircraft model aircraft substructure chose use plywoodaircraft quality Lite Plyand balsa such critical areas wing spars landing gear wing folding joints used aluminum and/or 4130N steel depending strength requirements skinning aircraft used 0 10inch-thick ABS plastic should give good indication what will encounter skinning fullscale aircraft 016- 040-inch-thick aluminum sheet needed use adhesives could bond plywood balsa Styrofoam fiberglass steel aluminum ABS plastic Satellite City able meet requirements UFO Thin UFO Thick adhesives plus Hot Shot Kick-It accelerators instant bonding necessary UFO Thin worked well UFO Thick allows repositioning parts before adhesive sets especially important during skinning process feature appreciate about UFO doesnt give off irritating gas some CyA glues Du-Bro Products has complete line quality hardware items including scale wheels hinges control horns pushrods wheel collars blind nuts etc used Du-Bro hardware wherever possible pushrodl clevis assemblies coil spring locks used control surfaces ensure safe reliable connections ENGINE SELECTION different engine types sizes considered before made final selection objective ability swing 18 x 10 prop approximately 7000 rpm didnt want use gasoline fuel because its relatively dangerous handling characteristics considered methanol-burning engines several multicylinder engines could have done job initial cost prohibitive single-cylinder methanol-burning engines available OPS 30 Maxi Shamrock Competition Imports Inc offers best value Its powerful engine has good starting idling transition throttling characteristics Other appealing features muffler locations flexibility engines light weight converted leaf-blower engine specifically designed power model aircraft 15- 22pound range Although ringed engine manufacturer still recommends breaking about hour no problem meI always run engines quite familiarize myself ensure everything functioning properly before taking air 56 Model Aviation month previewed full-scale Snipe Now lets build model U James Gilgenbach selected Cool Power Tartan/Bully fuel specifically blended engine size type have excellent results Cool Power past application no exception Another benefit using Cool Power opposed factoryrecommended 5% castor oil 95% methanol added rust] corrosion protection wanted lightweight three-inch-diameter aluminum spinner would fit OPS 30 Maxi look good Tm-Turn TT-300B proved excellent selection modified TT-300B cutting slots fit 18 x 10 prop Tm-Turn has big scale spinner available doesnt require drilling backplate engine drive pins drilling tapping prop washer prop backplate two 6-32 bolts drilling tapping OPS 30 Maxi prop nut 10-32 spinner bolt modifications lock prop engine fashion similar used full-scale aircraft Both Zinger wood props Dynathrust composite props performed well props OPS 30 Maxi turned following rpm 18 x 6 18 x 8 18 x 10 18 x 8/14 20 x 8 Zinger 8100 rpm 7500 rpm 6800 rpm 6200 rpm 5800rpm 18 x 8 18 x 10 Dynathrust 7400 rpm 6700 rpm RADIO SELECTION Futaba 7UAP radio control system offers options required handle -scale Snipe options include following 1 Ailerons separate S148 servos aileron Y connector AEC 4 b Extensions AEC 11 2 Elevator 8134 -scale servo 3 Rudder S 134 -scale servo 4 Flaps S134 -scale servo 5 Throttle S148 servo 6 Elevator trim tab S148 servo 7 Airborne battery pack NR-4LB 1000 mAb Type 114-scaIe test model Wingspan 76 inches Recommended motor size type OPS 30 Maxi Number RC channels recommended Six Expected flying weight 25 pounds Type construction Built-up Type of covering finish recommended ABS plastic skin K&B Super Poxy May1993 57 crashcomponents shown prior assembly model can readily stripped down necessary shipping storage Models skin 010 ABS plastic ne cowl canopy hatch open just will fullscale aircraft allowing access instruments Full Size Plans AvailableSee Page 184 -- - LIQ 8 Charger FBC-6B4 programmable transmitter allows fine-tuning flight controls need modify mechanical linkages feature saved least 20 hours trialand-error testing also like built-in timer can used monitor long radio has discharging servos tight thus eliminating control drift need constantly change trim MODEL CONSTRUCTION SEQUENCE basic steps build model follows 1 Build skin horizontal vertical stabilizers elevator rudder 2 Build fuselage including console turtledeck top Build engine/nosewbeel mount 3 Make landing gear parts steel spar caps 4 Build center wing section 5 Build outer wing sectionsleave top spar cap loose 6 Assemble wing sections adjust dihedral 7 Make install flaps ailerons 8 Fit wing horizontal vertical stabilizers fuselage 9 Install engine muffler nose gear 10 Install aileron servos make hatches 11 Skin fuselage interior Make install turtledeck front fuselage top May1993 59 L Steel weights hold bottom fuselage side skin placeTwo 6-32 bolts two 2-56 bolts attach removable until UFO Thick sets up Fuselage longerons used keyempennage fuselage control surfaces use music wire alignment surfaceshinge pins easy assembly/disassembly bulkhead stiffens center section Futaba S148 servo mounted canopy frame has temporary cross fuselage Empennage control rods wing section actuate ailerons Most braces added until Plexiglas canopy cables run through center console wing ribs 18 Lite Ply glued screwed place I1__ __I eJKL F V K ~~o V r 1 K JK C- IF 7 3 F F MATE1AS 4_ EM E empennage fairing 12 Make fit cowl canopy 13 Skin remaining parts model 14 Install rest radio components balance model 15 Paint accessories add trim EMPENNAGE substructure empennage made balsa Lite Ply assembly can done using variety accepted tech niques chose drill holes through ribs use music wire rods alignment Although elevator has separate trim tab model does need normal RC flying empennage assembly attached fuselage two 6-32 bolts two 2-56 bolts can removed storage maintenance tips rudder elevator have lead added balance control surfaces covered white Super MonoKote glued control surfaces IJFO FUSELAGE fuselage built upside down plans top cowling turtledeck added later Overall alignment critical 60 Model Aviation ofoam glued cowl frame sanded shape cowl assembly removed fuselage fibergiassed six-ounce cloth Hobbypoxy Formula 2 lsa frame used locate cowl engine OPS 30 Maxi runs very coola streamlined cowl could have added around cylinder head order determine best skinning process started making empennage messed up skinning replacement vertical horizontal stabilizer substruc ture would traumatic wing substructure replacement OPS 30 Maxi excellent choice power Snipe pulls model Toothpick pins added elevator hinges due location beneath through maneuver effort models skin Trim tab prototype necessary normal flying uI 4\ w -J IV\ -\ May1993 61 producing good-flying aircraft have found several tools invaluable es tablishing alignment follows 1 Steel squaring blocks least three required 2 12-in combination square/level 3 6-in machinists scale 4 72-in straightedge/scale 5 16-in x 24-in carpenters square 6 Incidence meter 7 Wing horizontal stabilizer airfoil tem plates 1/s-in plywood coated UFO Thin 8 Flat work table 2 ft x 5 ft minimum 9 0-clamps 10 T-pins 11 Masking tape 12 Alignment/building fixtures gauges Explaining use tools could consume enough pages 62 Model Aviation * Vertical stabilizer rudder built simple fixture holds wing place Root ribs stiffened 1/16-in balsa directly over plans Rudder post during skinning operation skin sheeting Spar caps 025 4130N steel features full-length music wire pin gives wing much its rigidity laminated between 1/ie ply 1/i6 balsa wing skin attached leading edge contact Completed skin looks beautiful fixture eliminates wing twist cement prevent cracking over period time UFO adheres skin misalignment Wings have degree washout skin balance structure built Continued page 123 original torsion bar nosewheel Without skin Snipes structure very flimsy just like its full-scale allowed nose dip too much high brothers text contains complete skinning instructions grass fields plans show fixed gear 24 N NIPE Snipe/Gilgenbach Continued page 62 separate article will detail use However several rules thumb should followed concerning alignment First never check alignment dimension once Check over several times preferably several different ways Second dont get engrossed details forget basics example making two left wings Third eyeball alignments look wrong probably Fourth add temporary braces structures flimsy until structures covered skinned fuselage main structure alignments set top longerons should used starting point alignments Wing dihedral incidence well horizontal stabilizer incidence parallelism should set reference longerons LANDING GEAR debated whether present details scale landing gear article drawings full-scale gear will use torsion bars hydraulic shock absorbers intent minimize weight full-scale gear yet still provide good shockabsorbing qualities different approaches can taken meet criteria want learn book Landing Gear Design Light Aircraft L Pazmany excellent source concluded gear far too complex anyone just wants goodflying less-than-exact-scale model took several hundred hours design machine parts milling/drilling machine metal lathe went through exercise because needed develop knowledge build fullscale aircraft gear recommend model referred Wittman-type gear because Steve Wittman originally developed full-scale aircraft aircraft use expensive high-alloy steel gear legs Continued page 126 May1993 123 original landing gear somewhat complex intended simulate full-scale gear much-simplified Wittman-type gear design made 1/4-inch-diameter music wire shown plans swivel joint machined allow prototypes wings fold Wing pins #6 tapered complex feature shown plansremovable panels have substituted OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLAYBOY SR KIT 112A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $330 STOCK ORDERS SHIPPED WITHIN 24 HRS W Composites fiberglass experts video shows descnbes easy use composites construct basic lamination 1993 catalog included $5-off coupon towards first order Approximately 60 minutes Only $2495 plus $450 shipping handlingi Z e Glast Developments Corporalion 800 821-3283 SnipelGilgenbach Continued page 123 modelers have material available strong yet less expensive music wire truly amazing steel Most model aircraft use gear type because simple durable WING models wing made simulate folding feature full-scale aircraft practical standpoint however normal model would need removable wing panels what Ive shown plans prototype model used #6 tapered pins hold wing sections together feature required some difficult machining plans show hex-head cap screw nylon-insert locknut unusual feature wing design use 025-in-thick x 75-inwide 4130N steel wing spar caps wing designed handle 9OG 45G ultimate loadsthe loads structural failure occurs full-scale aircraft would exceed loads 6OG 3OG under normal aerobatic conditions model haphazard flying tech niques possible attain much higher loads Therefore prudence must exercised flying model Wing construction simplified through use wing fixture notched front rear spar webs building sequence follows 1 Make wing fixture using miscellaneous pieces lumber have around workshop Make spars ribs 2 Cut 14 steel spar caps six long eight short length radius ends drill mounting lightening holes deburr sand 3 Cut out A6 x 3/4 plywood Aa x 3/4 balsa spar caps glue steel caps outer wing panels using UFO Thick 4 Cut out notch plywood spar webs Make sure webs fit snugly wing fixture 5 Using UFO Thick glue boltom outer front wing spar caps wing webs 6 Clamp outer wing panel front spar assemblies fixture position rear spar web ribs fixture 7 Align ribs glue spar webs Note glue top front spar cap yet 8 Glue leading edge front ribs 9 Glue rear plywood spar caps ribs rear spar web remove assembly fixture 10 Screw bottom outer main spar caps wing web block 11 Repeat operations 6 through 10 other outer wing panel 12 Glue 1/16 x 3/4 plywood balsa spar caps center wing steel spar cap 13 Glue plywood front spar web center bottom front spar cap assembly 14 Clamp assembly fixture position rear spar web ribs fixture 15 Align ribs vertically using square glue spar webs glue two end ribs lime 16 Glue top front spar cap ribs spar web 17 Glue leading edge two rear plywood spar caps ribs rear spar web Remove assembly fixture 18 Screw spar caps wing web block 19 Glue four wing-locating dowels place outer wing panels 20 Assemble outer wing panels center wing panel adjust dihedral angles sliding top wing spar caps outer panels 21 Clamp two end ribs center wing section two end ribs outer wing sections 020-in-thick shims between ribs shims thickness two pieces 010 ABS plastic 22 Glue top outer wing spar caps center section outer ribs place 23 Screw top outer wing spar caps wing web blocks 24 Shape sand leading edges three wing panels match ailerons flaps can built over plans flat surface intercon necting flap swivel tubes should aligned glued swivel joint installed flap sections aligned wing retracted position Note control surfaces use music wire through hinges easy assembly disassembly models wing tips made balsa plywood bolted outer wing rib two 6-32 socket-head cap screws could also glued place intend try several different wing tip types deter give best stall characteristics CANOPY canopy made heating stretch ing 040-in Plexiglas over plug follows 1 Make plug wood coat epoxy 2 Sand epoxy smooth texture surface will transfer directly inside canopy formed 3 Attach handles two sides Plexi glas sheet 4 Heat sheet plug oven until Plexiglas starts sag 5 Remove both oven stretch Plexiglas over plug repeated process several times get final shape 6 Make canopy frame 7 Trim attach canopy frame using UFO #1 flat-head wood screws COWL AND WHEEL PANTS Make cowl following sequence 1 Cut out plywood cowl framework 126 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPS! PROMPT SHIPMENT ON VISAdMC SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 2 Glue framework several Styrofoam blocks 3 Cut sand Styrofoam shape 4 Cover assembly layer six-oz fiberglass cloth used Hobbypoxy Formula 2 bond fill cloth 5 After epoxy hardwait least daytrim off excess fiberglass sand rough edges high points apply heavy coat Hobbypoxy mixed 50/50 microballoons 6 Wait least day rough sand outer surface shape 7 Split cowl hollow out Styro foam leave 3A-in-thick Styrofoam wall inside half 8 Sand Styrofoam wail smooth apply layer six-oz fiberglass inside half 9 Wait another day trim sand excess fiberglass Add hinges holddown latches hinges T-pins 10 Reassemble two halves finish sanding cowl halves exceptionally rigid assure good fit attached cowl fuselage matchsanded Remember compensate 0l0-in-thick ABS fuselage skin wheel pants can made forming Styrofoam plug covering two layers six-oz fiberglass coating fiberglass 50/50 epoxy/microballoon mix sanding shape hollowing out Styrofoam SKINNING PAINT AND TRIM Sand contour stabilizer smooth Remove dust loose particles Cut out 010-in ABS plastic skin slighfly larger area covered Cut skin wrap around leading edge allow enough stock overlap leading edge control surface stabilizers trailing edge Place skin onto hot approximately lOOT flat surface tape down end used wifes glass-topped dining room table space heater underside glass necessary skin will tight normal room temperature Run bead UFO Thick trailing edge ribs up leading edge top side horizontal stabilizer Start ing top gives better chance spot misalignment skin best part skinning job visible can start either side vertical stabilizer Press trailing edge onto skin leaving h-in overhang Roll stabilizer skin toward leading edge pulling stabilizer toward yourself keep skin taut Remember taped opposite edge glass table Hold pressure assembly about minute UFO sets Remove assembly table apply UFO Thick leading edge top front bottom Tape skin table again roll skin around leading edge making sure skin tight Hold pressure assembly about minute Remove assembly table skin should now glued tightly around leading edge Now apply UFO Thick ribs trailing edge remaining side Tape edge skin table roll stabilizer onto skin Hold pressure assembly about minute Remove structure table trim edges sharp knife sanding block structure cools should stiff tight skin exposed rib sides can covered ABS plastic paint commercially available heat-shrinkable plastic covering may used skin folded trailing edges elevator rudder yields goodlooking straight trailing edges Folding ABS plastic can present problem however following technique should used 1 Build sand control surface Remove loose particles 2 Cut ABS skin slightly larger required 3 Lay thin 025-in steel straightedge onto skin fold line weight clamp down end 4 hard pencil draw trailing edge fold line Push down hard pencil plastic scored scratched 5 Fold skin over straightedge creating 1800 bend 6 Remove straightedge fold skin flat fold line should now straight 7 Tape top side skin heated glass table 8 Apply UFO Thick top side control surface substructure 9 Position substructure onto skin Press roll attach skin Hold pressure assembly about minute 10 Remove assembly table apply UFO Thick opposite side substructure 11 Repeat operation 9 opposite side 12 Trim off excess skin rudder rolled skin halfway around leading edge side elevator covered leading edge separately wing panels subsequently skinned using same procedure horizontal stabilizer ailerons flaps skinned using same procedure elevator fuselage sides skinned first turtledeck finally bottom using basically same techniquesplacing skin warm worktable applying UFO Thick structure pressing rolling structure skin Through trial error Ive learned several interesting things working 010 ABS plastic accidentally spill epoxy plastic denatured alcohol will remove epoxy damaging plastic Once P-40 WARHA WK Made USA SPECIFICATIONS WINGSPAN 60 ENGINE SUE60 2-EEROKE WEIGIfT7-8 LBS IIV7RO PRiCE$16000 ALL KITS FEATURE BAND LAID FIBERGLASS FUSEIAGEPANEL UNES SCALE DETAILSFOAM CORE WINGS MACHINE CITE FORMERS & BULKHEADS SEE YOUR LOCAL DEALER OR CALL HOBBY IL4NGAR 606-2&3-5 746 FOR IMMEDIATE DEUVERY DE4LER INQUIRIES WELCOME WEACCEPT VISA MASTERCARD & DISCOVER CARDS WEGLADLYSHIP COD SHIPPING 114 NDUNG $309 PER KIT CONTINENTAL USA OilIER AREAS CALL KE VCKY RESIDENIS ADD 6% SALES TAX HOBBY HANGAR ISA FULL SERVICE HOBBY SHOP WITH OVER 11000 ITEMS IN STOCI CATALOGS VAILABLE $400 EACH WIREBATE ON FIRST ORDER SPECIITE PIANEHELICOPTER OR CAR HANGAR EXaUCSIVEDISTRWTCW FIBER SCALE MODELS 153 LLOYD AVE R2VDW KY 41042 606-283-5746 IYW 606-2853889 FAX May1993 127 FOCKE WULF 190 Made USA SPECIFICATIONS WINGSPAN 65 ENGINE SIZE6090 2-SISOKE 90-120 4-SEROKE WEIGIIr9-10 LBS IPTERO PRICE SPECIFICATIONS WINGSPAN 60 ENGINE SIZE WEIGhT 60 2-SIROKE 8-ES LBS CESSNA 150Made USA SPEClFICATIONS WINGSPAN 65 ENGINE SUE WEIGHT 45-60 2-SEROKE 7-75 LBS QUALIT WTEGITY SRV1CE QJLALTr INTEGUTY SiR VICE QJJALIrY INTEGRITY SERVICE 5~ tJ uJ GRTYSER VICE 3950-AValIeyBIvd WALNUT CA 91789 Li w A T PE RR 0 0 F ci C S T FA R N ED EI N G U 01 O0 0 IIEAm OOD Jo C PLME 0' U SHADE 51g-i5 ni CALL OR WRITE FOR FREE BROCHURE Pitts-Style Mufflers UNIVERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2185 SI-SI IT-GOP $2385 MOKI 61 JT-MK61P 52595 UNIVERSAL 9OlT ON Side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts supplied muffler JT-40P8 29-45 $2285 JT-A91PASP 1002995 JT-F74PFOX 742995 JT-M100PMAXOl-lOS2995 JT-BGXPMAX BGXI3495 JT-5T69PST 61-75-902995 JT-ST25PST 25-30002995 JT-MK150PMOKI 153495 JT JT-W12OPWEBRA 1202995 5161 ZJTECI MAIL ORDER se add $255 UPS shippIng Check MO Visa MC COO accepted Add $400 extra COD California residents add 8% sales tax 255 Eat Alillorld/FO 8xx727/Sodo Springs dubs 82276 ULTIMATESPORT RC UlTIMATE 5-305 Mlii12085473742F F,nh5ed 5555 epoxy sets will have lot trouble removing may have sand off Removing UFO ABS plastic tricky Put small amount Zap Z-7 Debonder onto clean rag lightly wipe over UFO rub too hard too long Z-7 will cut plastic dull surface Z-7 can bring back shine Turtle Wax white automotive polishing compound Sooner later will scratch ABS skin occurs scratches can removed sanding 1200-grit wet-ordry sandpaper rubbing polishing compound sanding rubbing skin dont push too hard skin may crack attached structure plastic can shrunk using heat gun also very easy melt will shrink enough force warp substructure dont recommend heatshrinking minimize wrinlding sunlight plastic should preheated before installation K&B thinner cuts ABS plastic K&B epoxy sticks well especially thinned Conversely dont use K&B thinner cleanupuse denatured alcohol miscellaneous parts painted K&B primer K&B Super Poxy parts made plywood balsa spruce steel aluminum brass epoxy fiberglass resin ABS plastic Ive never found paint sands holds up better K&B worked equally well over materials order save weight time chose paint entire aircraft However did sand polish skin blemishes scratches used Jumbo Stripe Kit Eagle Products trim model decals easy install durable look good Eagle Products offers several different color schemes can individualize aircraft Personally like fluorescent pink/blue/purple combination TESTINGAT HOME Before taking new model flying field several things should always done First check center gravity CG should between 23% 27% wing chord first few flights flown CG 28% would recommend adding weight nose necessary get CG 25% wing chord engine should test run aircraft set up different attitudes eg nose up nose down inverted uprightto check run consistency radio equipment should actively cycled hour recharged cycled again hour test will also reveal control surface/linkage hang-ups radio must range-checked both engine running stopped Dont forget tie down plane Continued page 174 128 Model Aviation uSt extensions worm drive mounting strap Included MGLASS ALES INC W Fiberglass Headquarters * BUY DIRECT * Super Bond S mit Epony Epoxy Lsminxting Resins Cyanoacrylate Adhesives Glones ective Hand Creams Masits ns Polyester Resin al SprayerLaminating Bnsshes ers Acetate Fiberglass Fiilers Tongue Depressom Mioing Paddles sive Discs Sandpaper Foam Brushes Fine-Weave Median Heaxy Weight cloth ar on Fibers TECHNICAL INFORMATION Kenlar Tap. snarbon fib, tap. CALITOLL FREE earbon tiber tand available IMI WI ors ul 1-800-589-4444 18621 8 Nne MileRoad EastpointuMichigsn48O2l 313 777-2032Fax 313 7770350 Foao Flnis 5da, AI~ Lon4g Osar clerr Conopy Aailabl e,iIde KjI S255~ shasred Kr S5u5~Olna Sheered KI SUSS Over 70 Kits Fox Engines best prices FREE CATALOG DoCs Generix Controline P0 BOX 111 Jasonville IN 47438 Tel 812-665-3723 WORLDS LARGEST SCALE PLANS & DOCUMENTATN SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS ze 120 PAGE CATALOG 55 00 USA & CANADA StOQO AIR OVERSEAS Jim Pepmnos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE NSBORO NC 27403 292-5239 WORLDSMOSPAOTNEMTI MOD PLANSALL PATTERNS INCLUDED SCALEOFPL&NS*-DSFOPOP OP RSABBBEVIATED NAME 1/SASZ 1/L6SZ 1/B SE 1/6 SZ 1/4SZ 37 OeHov Cootec Rone 22320 324332 66344 132068 40 Vooght Cone P45 20320 30326 60345 15 Con JN4S Jenny 21318 32324 65$38 86 352 27 Llodbeoge 80211 15314 34 324 69334 91348 29 Wano TaperWing I5314 22 $20 45334 6034850362 36 Weatlod Lynanden 25319 37 324 75338 OA 2 35 Soog 046A Obon 23324 34332 68346 29 Boeing 100 Spont 15316 224324 453361603 nin Tninoton 30330 43338 90 6212037 39 LoOk Licknog P 39 Gee P38AFlghEn 184315 28 20 56334 I 2 25 VgE CoeD 0281/4 08320 27 28 38 Con CoElna PBY5o 52 48 78 60S04I~1A 19 Coctien NC4 624366 94089 17 Fekken 57 Ftc 14312 21316 8 o4349 31 Baylen GeeBee 114312 17314 35332T4344 75356 13 Sepenolanlon 068 15310 44432616038 8952 36 GroIn GolOhank 144314 214388 43$38 SCALE PLAN 35 Look Electra #11 27325 60332 55338 Look Slow 34 43 GroIn nengen TRE 30328 40 338 803 2 Fond 3M 4AT6 42 Roe B17G FlyFoct 51345 77 35 Roe 8170 36 38 NA MItohell 825 364337 55352 NA 525 36 34 MnoolCato088C72 154315 23322 454335 MeG N 826 6 37 Con Navy 003C1 19318 284324 57336 lEOn Tnt 4 25 CRaoen R3C-1 &2 11 315 164320 3 3 Nod1yPo e 6 34 Doog Tonoep SC3 47340 71 350oo 6 33 ConE Hawk P6E 154315 234322 47 4 32 Doolittle GB#11 124317 184322 37e335 49 46 74338 31 Bee P48344 P12B 15316 224320 444332 394 44 B9358 32 Spefld BollDog 134316 20320 40e332 53580358 32 Howard Ske&SBlke 104312 154315 31326 62345 34 Tocoeca 800cc 13312 194316 39 328 5- 340 78352 35 Now Molligan 16 315 234320 47332 64 44 94 56 33 Boa P26A Low Hog 14315 21 320 42332 63 45 84 58 35 Stlneen TSI SR7 204316 314325 42 58 Mooqolte Book 374324 41335 B1350408e365 37 Steceseen PTi16 318 244322 49 39 43 N Bik Widow P61 33340 494350 99 75 30 TAOES Nwke Ten13 144383 214318 43 36 86 42 CHelldive 5B2C4 25325 374335 26 Fond Teimote 4AT 38338 57 348 31 Ballano AlE Ron 32 322 48 330 96 52 33 Gnome J2F look194S28 29 340 58355 N 36N 27 CSeakawk F7C1 154318 234324 47338 6J35Q94e 83 28 SIk AopkLk S38 36$34 543424082B042U 16 8Pge 0-400 Rosob 55345 75956 31 Liedys LSinloe 21316 314322 B 336 31 Howard BaoPete 10312 15315 30330 0342 31 C Spackuk F9C2 124315 19322 38332 5543 8176358 33 Aceonca 13 Opt 18310 27314 534326 48 38 Toenone peeco Op 124316 184320 37336 rIght Ellen204318 304324 604838 5 AD BEPOBE ORDERING* 3/6 SCALE 1732 NILEI MT EESAIM 08088315 00PLANS AVAILABLE AT ONI 80 SURE TO ASS THE 120U GOLLAIT UNOER1I24 SIZE AL 1O7 FOR PACKAGINGIi IESFORA1L DESIGN POSTAGE ANS INOOSANCE ABOUT THOUSAND ADGITI4 PLINS MANY SIZES 75 CATALOG 3200 58 SS LIST ALONE 31. 55 AIR FOBEIGS 33 eveana e uppy 0 Edeerd 0 PeckedOnIaIiolS Nest FrIondSleoS IRIS".eP"P" 9800B BETNOI ANEN EEl LIONS 810 4 552O 5000 Snipe/Gilgenbach Continued page 128 aircraft should taxied familiarize yourself its groundhandling characteristics After running engine cycling radio taxiing check linkage connec tors nuts bolts tightness find loose components dont just retighten determine loosened take corrective action such gluing using Loctite PREFLIGHT Once became familiar operating characteristics aircraft confident everything functioning properly ready take long lonely drive flying field new model recommend following Dont go flying field day will crowded Dont take lot friends Arrange have just two helpersan experienced model builderlpilot good camcorder operator Videotape entire flying session includ aig preflight weather adverse cancel wait another day Conduct preflight inspection Check linkages connectors inspect control surfaces direction travel amount throw run engine different attitudes range-check radio FLIGHT PLAN developed flight plan would know exactly what intended would have contingencies something went wrong flight plan steps 1 Take off northwest wind flying field went has approximately 1/ mile grass direction engine died takeoff could land wind attempting tarn 2 At approximately 200 feet altitude 200 yards distance perform 180 right-hand turn 3 Climb 300 feet fly 400 yards southeast 4 Perform left-hand procedure turn 5 Fly 400 yards northwest trim controls perform right-hand procedure turn 6 Fly 400 yards southeast 7 Repeat steps 4 through 6 several times trying both high low rates elevator ailerons verbally noting control response helper video camera 8 Test flight characteristics aircraft flaps down 9 Enter right-hand landing pattern land aircraft flaps down possible After first flight inspected linkages nuts bolts connectorsnothing fallen off prototype proved quite stable too responsive controls low rate interesting activating flaps produced no pitching tendency 25 flaps engine idle landing relatively slow considering fueled aircraft weighed 25 pounds second flight explored aircrafts aerobatic characteristics surprise performed very much like pattern ship landing flaps disastrous however model caught wing tip damaging left wing nose gear After second flight checked model cleaned folded wings packed up went home review videotape video recording proved invaluable project guess thats have flight recorders airliners video showed second landing flared too soon too much causing right wing drop slighfly overcorrected models left wing hit ground After further analysis causes obvious still too much elevator aileron throw CG 28% flying skills rusty subsequent days checked out stall spin characteristics different weights CG locations TEST RESULTS 1 model flies well CG 25% 2 drooped wing tips stall DC Flight Training Beginner advanced tailored individual long-time modeler full size airplane flight instruc tor will make progress fun easy during week stay beautiful far western North Carolina Write call information RC Flight Training Rm 1704 38949GB 174 Model Aviation scale kits engines accessories want &you want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HES 1387 N Military Trail West Palm Beach FL 3340 407-68841669 HOBBY SUPER IUKL straight no tendency snap roll drop wing tip 3 slow ground speeds difficult turn model steerable nose wheel individual main gear brakes 4 ABS skin does vibrate excessively regardless engine rpm 5 Theoretically model should fly well 34 pounds hut have yet test theory 6 Elevator trim changes required flaps activated 7 Landings docile 200 400 flaps Forty degrees flap quickly slows plane greatly increases rate descent 8 No control flutter encountered 9 aircraft will spin CG less 20% full control travel CONCLUSIONS project would have successful help encouragement individuals organizations strongly recommend modelers patronize manufacturers distributors mentioned article Further wish thank flight assistantsGus Rebensburg Jerry Reichow Duncan Stewartfor time effort Based test results am now con fident feasible develop full-scale Snipe As am detail-designing big Snipe will continue use -scale model test different features building techniques cant wait get started bending tin summer 1998 Ill let know full-scale aircraft flies leads final question build full-scale model prototype -scale aircraft can enter sanctioned AMA scale contest lope SoaringlByors Continued page 106 required servo fact typical microservo will extend retract landing gear well open landing gear doors Gene has also designed over-center system retractable landing gear landing no force transmitted servo might strip servos gears over-center system also works retracted mode wheels inertia cannot throw gear out open ruggedness retract system surprising Gene has tested gear design doing push-ups install gear builder custom-fits fuselage between two bulkheads installation method serves two purposes First bulkhead mounting provides very rugged attachment inside fuselage gear cannot broken loose landing impact mounting system lets builder adjust depth wheel extension through fuselage Now meticulous scale builder want best retractable gear money can buy Cope retract probably worth considering Gene offers retract two sizes has -scale version currenfly priced $125 Cope also offers supersize -scale retract will handle really big birds tells sometime not-too-distant future will offering -scale model too Cope Retracts can contacted 32031/2 Main St Union Gap WA 98903 telephone number 509 457-9017 modelers friends contacted during month Mr Darrel Johnson Mesa Arizona suggested discuss balance models Well perfectly honest sometimes just mount model atop left right index fingers quick dirty Other times ever procedure bit exacting use balance stand balance stand simple device can built just few minutes aid good old Hot Stuff similar product stand built -inch plywood other plywood approximately size drawing outlines construction shows supporting fillets keep stand breaking large load applied drawing also details round edge stand upon model placed reason use stand quite obvious want obtain balance point model accurately possible stand much easier Using fingers balance model turns procedure somewhat juggling act However can place model stand make weight VIDEO_____ JOY OF FLYING FREE very informative 42 minute VHS video displaying phenomena free flight its variations great PR video can used effectively educate uninitiated art model aviation video professionally produced National Free Flight Society features both indoor outdoor activity available NIFFS 1655 Revere Drive Brookfield WI 53045 * Include Check $2500 plus $300 P&H per tape Buy 4 VgPEOS FREE #17 92 SCALEMASTER CHAMPS STAR MUS PIMA AIR MUS ALABAMA 2 Hrn.$1995 #16 AIRCRAFT GUNTERSYILLE AL AVAL AIR MUS PENSACOLA FL 2 Hn.51996 #1 592 WORLD SCALE CHAMPSAMA INVTL SHOOTOUT W INTL SCALEMASTERS 2 Hn.$1995 #1492 NW SEAPLANE CHAMPS EN SCALE AVIATION IN AUSTRALIA2 Hm.$1995 3 op Gun Invitari oledo Model topo s Air Museum2 Nra. 51996 #12- 91 Scalemasters tao Vegas 91 DSAA Las Vegas 91 NWlntl2 Hre.$1916 C #11 Scalemaster Aircraft Preview Mfg Visdw1tlan Parsons- 91 NWteaplanethamps 2 Kn.S1996 Z#1O 91 Tup Gun W Palm Bch Fl SsA Lao Vegas W Model topu2 Iin.$1996 90 Scalemasters Champs Irving TX hidbey 101 Scalemos5ers an Diego Aerospace Moo 2 Hra.51996 90 NW Intl Scalemasters Farragot Park-Athol ID m Champlin Fighter Museum w/tou Proctor W Seaplane ps Santa Monica Mos Flying 2 Mn. 51995 #7 op Gun Invitational Mesa AZ W Model Eupo2 Hrs.$1995 #6 89 Scalemasters Champs St Louis ake lianaso m Schneider Cop Races2 IIrs.$19gG 89 US NaIls Scale & Seaplanes 89 NW Seaplane Champs Planes Fame taut Moo Moo DshkoshVisit mw/Ralph Beck Chicago Mo Sci & Ind 2 Hs.$1995 #4 09 Top Gon Champo Coral Springs FL tor Albatroo DVA Preview atIs Seaplane Site NW ntl oScalemasters tor N-li Test Flight 2 Hre.S1I96 IA Special Edition Proctor Enterprises Atbatroo OVA Brief Conotr Engine Radio Irrntall& Teat Ftigbto 2 Hra $1996 Cuetias JN4D Jenny Plan FUN SCALE 109 inches 1804 sq 11 lbs 8 sheets w/instroctions 51996 10807 SE STACY CT PORTLAND OR 97266 PHONE 503653-25780 FAX 503 6781342 SEND STAMP FOR COMPLETE LIST PAL & SECAM ORDERS CONCEPTS 17 MILPERA CRESCENT WANTIRNA VIC 3152 AUSTRALIA e 03801-3899 03887-3472 BETA CARLSON ENGINE IMPORTS 814 East Marconi Phoenix AZ 85022-3112 IMPORTED DIESEL ENGINES Worlds Best Selection AE AM Aurora Cipolla D-C KMD MAP Mikro MK MWS Oliver PAW Pfeffer Silver Swallow USE Also Replica Mills MOVO Letmo diesels rare imported glow engines CO motor sets Ten page catalog 1 00 May1993 175
Edition: Model Aviation - 1993/05
Page Numbers: 56, 57, 59, 60, 61, 62, 123, 126, 127, 128, 174, 175
PART TWO LAST MONTH explained steps required design full-scale homebuilt aircraft also gave reasons believe -scale RC model design should built tested month design construction testing model will discussed MATERIAL AND HARDWARE SELECTION goal pick good quality readily available products would allow simulation assembly processes would use building full-scale aircraft model aircraft substructure chose use plywoodaircraft quality Lite Plyand balsa such critical areas wing spars landing gear wing folding joints used aluminum and/or 4130N steel depending strength requirements skinning aircraft used 0 10inch-thick ABS plastic should give good indication what will encounter skinning fullscale aircraft 016- 040-inch-thick aluminum sheet needed use adhesives could bond plywood balsa Styrofoam fiberglass steel aluminum ABS plastic Satellite City able meet requirements UFO Thin UFO Thick adhesives plus Hot Shot Kick-It accelerators instant bonding necessary UFO Thin worked well UFO Thick allows repositioning parts before adhesive sets especially important during skinning process feature appreciate about UFO doesnt give off irritating gas some CyA glues Du-Bro Products has complete line quality hardware items including scale wheels hinges control horns pushrods wheel collars blind nuts etc used Du-Bro hardware wherever possible pushrodl clevis assemblies coil spring locks used control surfaces ensure safe reliable connections ENGINE SELECTION different engine types sizes considered before made final selection objective ability swing 18 x 10 prop approximately 7000 rpm didnt want use gasoline fuel because its relatively dangerous handling characteristics considered methanol-burning engines several multicylinder engines could have done job initial cost prohibitive single-cylinder methanol-burning engines available OPS 30 Maxi Shamrock Competition Imports Inc offers best value Its powerful engine has good starting idling transition throttling characteristics Other appealing features muffler locations flexibility engines light weight converted leaf-blower engine specifically designed power model aircraft 15- 22pound range Although ringed engine manufacturer still recommends breaking about hour no problem meI always run engines quite familiarize myself ensure everything functioning properly before taking air 56 Model Aviation month previewed full-scale Snipe Now lets build model U James Gilgenbach selected Cool Power Tartan/Bully fuel specifically blended engine size type have excellent results Cool Power past application no exception Another benefit using Cool Power opposed factoryrecommended 5% castor oil 95% methanol added rust] corrosion protection wanted lightweight three-inch-diameter aluminum spinner would fit OPS 30 Maxi look good Tm-Turn TT-300B proved excellent selection modified TT-300B cutting slots fit 18 x 10 prop Tm-Turn has big scale spinner available doesnt require drilling backplate engine drive pins drilling tapping prop washer prop backplate two 6-32 bolts drilling tapping OPS 30 Maxi prop nut 10-32 spinner bolt modifications lock prop engine fashion similar used full-scale aircraft Both Zinger wood props Dynathrust composite props performed well props OPS 30 Maxi turned following rpm 18 x 6 18 x 8 18 x 10 18 x 8/14 20 x 8 Zinger 8100 rpm 7500 rpm 6800 rpm 6200 rpm 5800rpm 18 x 8 18 x 10 Dynathrust 7400 rpm 6700 rpm RADIO SELECTION Futaba 7UAP radio control system offers options required handle -scale Snipe options include following 1 Ailerons separate S148 servos aileron Y connector AEC 4 b Extensions AEC 11 2 Elevator 8134 -scale servo 3 Rudder S 134 -scale servo 4 Flaps S134 -scale servo 5 Throttle S148 servo 6 Elevator trim tab S148 servo 7 Airborne battery pack NR-4LB 1000 mAb Type 114-scaIe test model Wingspan 76 inches Recommended motor size type OPS 30 Maxi Number RC channels recommended Six Expected flying weight 25 pounds Type construction Built-up Type of covering finish recommended ABS plastic skin K&B Super Poxy May1993 57 crashcomponents shown prior assembly model can readily stripped down necessary shipping storage Models skin 010 ABS plastic ne cowl canopy hatch open just will fullscale aircraft allowing access instruments Full Size Plans AvailableSee Page 184 -- - LIQ 8 Charger FBC-6B4 programmable transmitter allows fine-tuning flight controls need modify mechanical linkages feature saved least 20 hours trialand-error testing also like built-in timer can used monitor long radio has discharging servos tight thus eliminating control drift need constantly change trim MODEL CONSTRUCTION SEQUENCE basic steps build model follows 1 Build skin horizontal vertical stabilizers elevator rudder 2 Build fuselage including console turtledeck top Build engine/nosewbeel mount 3 Make landing gear parts steel spar caps 4 Build center wing section 5 Build outer wing sectionsleave top spar cap loose 6 Assemble wing sections adjust dihedral 7 Make install flaps ailerons 8 Fit wing horizontal vertical stabilizers fuselage 9 Install engine muffler nose gear 10 Install aileron servos make hatches 11 Skin fuselage interior Make install turtledeck front fuselage top May1993 59 L Steel weights hold bottom fuselage side skin placeTwo 6-32 bolts two 2-56 bolts attach removable until UFO Thick sets up Fuselage longerons used keyempennage fuselage control surfaces use music wire alignment surfaceshinge pins easy assembly/disassembly bulkhead stiffens center section Futaba S148 servo mounted canopy frame has temporary cross fuselage Empennage control rods wing section actuate ailerons Most braces added until Plexiglas canopy cables run through center console wing ribs 18 Lite Ply glued screwed place I1__ __I eJKL F V K ~~o V r 1 K JK C- IF 7 3 F F MATE1AS 4_ EM E empennage fairing 12 Make fit cowl canopy 13 Skin remaining parts model 14 Install rest radio components balance model 15 Paint accessories add trim EMPENNAGE substructure empennage made balsa Lite Ply assembly can done using variety accepted tech niques chose drill holes through ribs use music wire rods alignment Although elevator has separate trim tab model does need normal RC flying empennage assembly attached fuselage two 6-32 bolts two 2-56 bolts can removed storage maintenance tips rudder elevator have lead added balance control surfaces covered white Super MonoKote glued control surfaces IJFO FUSELAGE fuselage built upside down plans top cowling turtledeck added later Overall alignment critical 60 Model Aviation ofoam glued cowl frame sanded shape cowl assembly removed fuselage fibergiassed six-ounce cloth Hobbypoxy Formula 2 lsa frame used locate cowl engine OPS 30 Maxi runs very coola streamlined cowl could have added around cylinder head order determine best skinning process started making empennage messed up skinning replacement vertical horizontal stabilizer substruc ture would traumatic wing substructure replacement OPS 30 Maxi excellent choice power Snipe pulls model Toothpick pins added elevator hinges due location beneath through maneuver effort models skin Trim tab prototype necessary normal flying uI 4\ w -J IV\ -\ May1993 61 producing good-flying aircraft have found several tools invaluable es tablishing alignment follows 1 Steel squaring blocks least three required 2 12-in combination square/level 3 6-in machinists scale 4 72-in straightedge/scale 5 16-in x 24-in carpenters square 6 Incidence meter 7 Wing horizontal stabilizer airfoil tem plates 1/s-in plywood coated UFO Thin 8 Flat work table 2 ft x 5 ft minimum 9 0-clamps 10 T-pins 11 Masking tape 12 Alignment/building fixtures gauges Explaining use tools could consume enough pages 62 Model Aviation * Vertical stabilizer rudder built simple fixture holds wing place Root ribs stiffened 1/16-in balsa directly over plans Rudder post during skinning operation skin sheeting Spar caps 025 4130N steel features full-length music wire pin gives wing much its rigidity laminated between 1/ie ply 1/i6 balsa wing skin attached leading edge contact Completed skin looks beautiful fixture eliminates wing twist cement prevent cracking over period time UFO adheres skin misalignment Wings have degree washout skin balance structure built Continued page 123 original torsion bar nosewheel Without skin Snipes structure very flimsy just like its full-scale allowed nose dip too much high brothers text contains complete skinning instructions grass fields plans show fixed gear 24 N NIPE Snipe/Gilgenbach Continued page 62 separate article will detail use However several rules thumb should followed concerning alignment First never check alignment dimension once Check over several times preferably several different ways Second dont get engrossed details forget basics example making two left wings Third eyeball alignments look wrong probably Fourth add temporary braces structures flimsy until structures covered skinned fuselage main structure alignments set top longerons should used starting point alignments Wing dihedral incidence well horizontal stabilizer incidence parallelism should set reference longerons LANDING GEAR debated whether present details scale landing gear article drawings full-scale gear will use torsion bars hydraulic shock absorbers intent minimize weight full-scale gear yet still provide good shockabsorbing qualities different approaches can taken meet criteria want learn book Landing Gear Design Light Aircraft L Pazmany excellent source concluded gear far too complex anyone just wants goodflying less-than-exact-scale model took several hundred hours design machine parts milling/drilling machine metal lathe went through exercise because needed develop knowledge build fullscale aircraft gear recommend model referred Wittman-type gear because Steve Wittman originally developed full-scale aircraft aircraft use expensive high-alloy steel gear legs Continued page 126 May1993 123 original landing gear somewhat complex intended simulate full-scale gear much-simplified Wittman-type gear design made 1/4-inch-diameter music wire shown plans swivel joint machined allow prototypes wings fold Wing pins #6 tapered complex feature shown plansremovable panels have substituted OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLAYBOY SR KIT 112A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $330 STOCK ORDERS SHIPPED WITHIN 24 HRS W Composites fiberglass experts video shows descnbes easy use composites construct basic lamination 1993 catalog included $5-off coupon towards first order Approximately 60 minutes Only $2495 plus $450 shipping handlingi Z e Glast Developments Corporalion 800 821-3283 SnipelGilgenbach Continued page 123 modelers have material available strong yet less expensive music wire truly amazing steel Most model aircraft use gear type because simple durable WING models wing made simulate folding feature full-scale aircraft practical standpoint however normal model would need removable wing panels what Ive shown plans prototype model used #6 tapered pins hold wing sections together feature required some difficult machining plans show hex-head cap screw nylon-insert locknut unusual feature wing design use 025-in-thick x 75-inwide 4130N steel wing spar caps wing designed handle 9OG 45G ultimate loadsthe loads structural failure occurs full-scale aircraft would exceed loads 6OG 3OG under normal aerobatic conditions model haphazard flying tech niques possible attain much higher loads Therefore prudence must exercised flying model Wing construction simplified through use wing fixture notched front rear spar webs building sequence follows 1 Make wing fixture using miscellaneous pieces lumber have around workshop Make spars ribs 2 Cut 14 steel spar caps six long eight short length radius ends drill mounting lightening holes deburr sand 3 Cut out A6 x 3/4 plywood Aa x 3/4 balsa spar caps glue steel caps outer wing panels using UFO Thick 4 Cut out notch plywood spar webs Make sure webs fit snugly wing fixture 5 Using UFO Thick glue boltom outer front wing spar caps wing webs 6 Clamp outer wing panel front spar assemblies fixture position rear spar web ribs fixture 7 Align ribs glue spar webs Note glue top front spar cap yet 8 Glue leading edge front ribs 9 Glue rear plywood spar caps ribs rear spar web remove assembly fixture 10 Screw bottom outer main spar caps wing web block 11 Repeat operations 6 through 10 other outer wing panel 12 Glue 1/16 x 3/4 plywood balsa spar caps center wing steel spar cap 13 Glue plywood front spar web center bottom front spar cap assembly 14 Clamp assembly fixture position rear spar web ribs fixture 15 Align ribs vertically using square glue spar webs glue two end ribs lime 16 Glue top front spar cap ribs spar web 17 Glue leading edge two rear plywood spar caps ribs rear spar web Remove assembly fixture 18 Screw spar caps wing web block 19 Glue four wing-locating dowels place outer wing panels 20 Assemble outer wing panels center wing panel adjust dihedral angles sliding top wing spar caps outer panels 21 Clamp two end ribs center wing section two end ribs outer wing sections 020-in-thick shims between ribs shims thickness two pieces 010 ABS plastic 22 Glue top outer wing spar caps center section outer ribs place 23 Screw top outer wing spar caps wing web blocks 24 Shape sand leading edges three wing panels match ailerons flaps can built over plans flat surface intercon necting flap swivel tubes should aligned glued swivel joint installed flap sections aligned wing retracted position Note control surfaces use music wire through hinges easy assembly disassembly models wing tips made balsa plywood bolted outer wing rib two 6-32 socket-head cap screws could also glued place intend try several different wing tip types deter give best stall characteristics CANOPY canopy made heating stretch ing 040-in Plexiglas over plug follows 1 Make plug wood coat epoxy 2 Sand epoxy smooth texture surface will transfer directly inside canopy formed 3 Attach handles two sides Plexi glas sheet 4 Heat sheet plug oven until Plexiglas starts sag 5 Remove both oven stretch Plexiglas over plug repeated process several times get final shape 6 Make canopy frame 7 Trim attach canopy frame using UFO #1 flat-head wood screws COWL AND WHEEL PANTS Make cowl following sequence 1 Cut out plywood cowl framework 126 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPS! PROMPT SHIPMENT ON VISAdMC SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 2 Glue framework several Styrofoam blocks 3 Cut sand Styrofoam shape 4 Cover assembly layer six-oz fiberglass cloth used Hobbypoxy Formula 2 bond fill cloth 5 After epoxy hardwait least daytrim off excess fiberglass sand rough edges high points apply heavy coat Hobbypoxy mixed 50/50 microballoons 6 Wait least day rough sand outer surface shape 7 Split cowl hollow out Styro foam leave 3A-in-thick Styrofoam wall inside half 8 Sand Styrofoam wail smooth apply layer six-oz fiberglass inside half 9 Wait another day trim sand excess fiberglass Add hinges holddown latches hinges T-pins 10 Reassemble two halves finish sanding cowl halves exceptionally rigid assure good fit attached cowl fuselage matchsanded Remember compensate 0l0-in-thick ABS fuselage skin wheel pants can made forming Styrofoam plug covering two layers six-oz fiberglass coating fiberglass 50/50 epoxy/microballoon mix sanding shape hollowing out Styrofoam SKINNING PAINT AND TRIM Sand contour stabilizer smooth Remove dust loose particles Cut out 010-in ABS plastic skin slighfly larger area covered Cut skin wrap around leading edge allow enough stock overlap leading edge control surface stabilizers trailing edge Place skin onto hot approximately lOOT flat surface tape down end used wifes glass-topped dining room table space heater underside glass necessary skin will tight normal room temperature Run bead UFO Thick trailing edge ribs up leading edge top side horizontal stabilizer Start ing top gives better chance spot misalignment skin best part skinning job visible can start either side vertical stabilizer Press trailing edge onto skin leaving h-in overhang Roll stabilizer skin toward leading edge pulling stabilizer toward yourself keep skin taut Remember taped opposite edge glass table Hold pressure assembly about minute UFO sets Remove assembly table apply UFO Thick leading edge top front bottom Tape skin table again roll skin around leading edge making sure skin tight Hold pressure assembly about minute Remove assembly table skin should now glued tightly around leading edge Now apply UFO Thick ribs trailing edge remaining side Tape edge skin table roll stabilizer onto skin Hold pressure assembly about minute Remove structure table trim edges sharp knife sanding block structure cools should stiff tight skin exposed rib sides can covered ABS plastic paint commercially available heat-shrinkable plastic covering may used skin folded trailing edges elevator rudder yields goodlooking straight trailing edges Folding ABS plastic can present problem however following technique should used 1 Build sand control surface Remove loose particles 2 Cut ABS skin slightly larger required 3 Lay thin 025-in steel straightedge onto skin fold line weight clamp down end 4 hard pencil draw trailing edge fold line Push down hard pencil plastic scored scratched 5 Fold skin over straightedge creating 1800 bend 6 Remove straightedge fold skin flat fold line should now straight 7 Tape top side skin heated glass table 8 Apply UFO Thick top side control surface substructure 9 Position substructure onto skin Press roll attach skin Hold pressure assembly about minute 10 Remove assembly table apply UFO Thick opposite side substructure 11 Repeat operation 9 opposite side 12 Trim off excess skin rudder rolled skin halfway around leading edge side elevator covered leading edge separately wing panels subsequently skinned using same procedure horizontal stabilizer ailerons flaps skinned using same procedure elevator fuselage sides skinned first turtledeck finally bottom using basically same techniquesplacing skin warm worktable applying UFO Thick structure pressing rolling structure skin Through trial error Ive learned several interesting things working 010 ABS plastic accidentally spill epoxy plastic denatured alcohol will remove epoxy damaging plastic Once P-40 WARHA WK Made USA SPECIFICATIONS WINGSPAN 60 ENGINE SUE60 2-EEROKE WEIGIfT7-8 LBS IIV7RO PRiCE$16000 ALL KITS FEATURE BAND LAID FIBERGLASS FUSEIAGEPANEL UNES SCALE DETAILSFOAM CORE WINGS MACHINE CITE FORMERS & BULKHEADS SEE YOUR LOCAL DEALER OR CALL HOBBY IL4NGAR 606-2&3-5 746 FOR IMMEDIATE DEUVERY DE4LER INQUIRIES WELCOME WEACCEPT VISA MASTERCARD & DISCOVER CARDS WEGLADLYSHIP COD SHIPPING 114 NDUNG $309 PER KIT CONTINENTAL USA OilIER AREAS CALL KE VCKY RESIDENIS ADD 6% SALES TAX HOBBY HANGAR ISA FULL SERVICE HOBBY SHOP WITH OVER 11000 ITEMS IN STOCI CATALOGS VAILABLE $400 EACH WIREBATE ON FIRST ORDER SPECIITE PIANEHELICOPTER OR CAR HANGAR EXaUCSIVEDISTRWTCW FIBER SCALE MODELS 153 LLOYD AVE R2VDW KY 41042 606-283-5746 IYW 606-2853889 FAX May1993 127 FOCKE WULF 190 Made USA SPECIFICATIONS WINGSPAN 65 ENGINE SIZE6090 2-SISOKE 90-120 4-SEROKE WEIGIIr9-10 LBS IPTERO PRICE SPECIFICATIONS WINGSPAN 60 ENGINE SIZE WEIGhT 60 2-SIROKE 8-ES LBS CESSNA 150Made USA SPEClFICATIONS WINGSPAN 65 ENGINE SUE WEIGHT 45-60 2-SEROKE 7-75 LBS QUALIT WTEGITY SRV1CE QJLALTr INTEGUTY SiR VICE QJJALIrY INTEGRITY SERVICE 5~ tJ uJ GRTYSER VICE 3950-AValIeyBIvd WALNUT CA 91789 Li w A T PE RR 0 0 F ci C S T FA R N ED EI N G U 01 O0 0 IIEAm OOD Jo C PLME 0' U SHADE 51g-i5 ni CALL OR WRITE FOR FREE BROCHURE Pitts-Style Mufflers UNIVERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2185 SI-SI IT-GOP $2385 MOKI 61 JT-MK61P 52595 UNIVERSAL 9OlT ON Side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts supplied muffler JT-40P8 29-45 $2285 JT-A91PASP 1002995 JT-F74PFOX 742995 JT-M100PMAXOl-lOS2995 JT-BGXPMAX BGXI3495 JT-5T69PST 61-75-902995 JT-ST25PST 25-30002995 JT-MK150PMOKI 153495 JT JT-W12OPWEBRA 1202995 5161 ZJTECI MAIL ORDER se add $255 UPS shippIng Check MO Visa MC COO accepted Add $400 extra COD California residents add 8% sales tax 255 Eat Alillorld/FO 8xx727/Sodo Springs dubs 82276 ULTIMATESPORT RC UlTIMATE 5-305 Mlii12085473742F F,nh5ed 5555 epoxy sets will have lot trouble removing may have sand off Removing UFO ABS plastic tricky Put small amount Zap Z-7 Debonder onto clean rag lightly wipe over UFO rub too hard too long Z-7 will cut plastic dull surface Z-7 can bring back shine Turtle Wax white automotive polishing compound Sooner later will scratch ABS skin occurs scratches can removed sanding 1200-grit wet-ordry sandpaper rubbing polishing compound sanding rubbing skin dont push too hard skin may crack attached structure plastic can shrunk using heat gun also very easy melt will shrink enough force warp substructure dont recommend heatshrinking minimize wrinlding sunlight plastic should preheated before installation K&B thinner cuts ABS plastic K&B epoxy sticks well especially thinned Conversely dont use K&B thinner cleanupuse denatured alcohol miscellaneous parts painted K&B primer K&B Super Poxy parts made plywood balsa spruce steel aluminum brass epoxy fiberglass resin ABS plastic Ive never found paint sands holds up better K&B worked equally well over materials order save weight time chose paint entire aircraft However did sand polish skin blemishes scratches used Jumbo Stripe Kit Eagle Products trim model decals easy install durable look good Eagle Products offers several different color schemes can individualize aircraft Personally like fluorescent pink/blue/purple combination TESTINGAT HOME Before taking new model flying field several things should always done First check center gravity CG should between 23% 27% wing chord first few flights flown CG 28% would recommend adding weight nose necessary get CG 25% wing chord engine should test run aircraft set up different attitudes eg nose up nose down inverted uprightto check run consistency radio equipment should actively cycled hour recharged cycled again hour test will also reveal control surface/linkage hang-ups radio must range-checked both engine running stopped Dont forget tie down plane Continued page 174 128 Model Aviation uSt extensions worm drive mounting strap Included MGLASS ALES INC W Fiberglass Headquarters * BUY DIRECT * Super Bond S mit Epony Epoxy Lsminxting Resins Cyanoacrylate Adhesives Glones ective Hand Creams Masits ns Polyester Resin al SprayerLaminating Bnsshes ers Acetate Fiberglass Fiilers Tongue Depressom Mioing Paddles sive Discs Sandpaper Foam Brushes Fine-Weave Median Heaxy Weight cloth ar on Fibers TECHNICAL INFORMATION Kenlar Tap. snarbon fib, tap. CALITOLL FREE earbon tiber tand available IMI WI ors ul 1-800-589-4444 18621 8 Nne MileRoad EastpointuMichigsn48O2l 313 777-2032Fax 313 7770350 Foao Flnis 5da, AI~ Lon4g Osar clerr Conopy Aailabl e,iIde KjI S255~ shasred Kr S5u5~Olna Sheered KI SUSS Over 70 Kits Fox Engines best prices FREE CATALOG DoCs Generix Controline P0 BOX 111 Jasonville IN 47438 Tel 812-665-3723 WORLDS LARGEST SCALE PLANS & DOCUMENTATN SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS ze 120 PAGE CATALOG 55 00 USA & CANADA StOQO AIR OVERSEAS Jim Pepmnos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE NSBORO NC 27403 292-5239 WORLDSMOSPAOTNEMTI MOD PLANSALL PATTERNS INCLUDED SCALEOFPL&NS*-DSFOPOP OP RSABBBEVIATED NAME 1/SASZ 1/L6SZ 1/B SE 1/6 SZ 1/4SZ 37 OeHov Cootec Rone 22320 324332 66344 132068 40 Vooght Cone P45 20320 30326 60345 15 Con JN4S Jenny 21318 32324 65$38 86 352 27 Llodbeoge 80211 15314 34 324 69334 91348 29 Wano TaperWing I5314 22 $20 45334 6034850362 36 Weatlod Lynanden 25319 37 324 75338 OA 2 35 Soog 046A Obon 23324 34332 68346 29 Boeing 100 Spont 15316 224324 453361603 nin Tninoton 30330 43338 90 6212037 39 LoOk Licknog P 39 Gee P38AFlghEn 184315 28 20 56334 I 2 25 VgE CoeD 0281/4 08320 27 28 38 Con CoElna PBY5o 52 48 78 60S04I~1A 19 Coctien NC4 624366 94089 17 Fekken 57 Ftc 14312 21316 8 o4349 31 Baylen GeeBee 114312 17314 35332T4344 75356 13 Sepenolanlon 068 15310 44432616038 8952 36 GroIn GolOhank 144314 214388 43$38 SCALE PLAN 35 Look Electra #11 27325 60332 55338 Look Slow 34 43 GroIn nengen TRE 30328 40 338 803 2 Fond 3M 4AT6 42 Roe B17G FlyFoct 51345 77 35 Roe 8170 36 38 NA MItohell 825 364337 55352 NA 525 36 34 MnoolCato088C72 154315 23322 454335 MeG N 826 6 37 Con Navy 003C1 19318 284324 57336 lEOn Tnt 4 25 CRaoen R3C-1 &2 11 315 164320 3 3 Nod1yPo e 6 34 Doog Tonoep SC3 47340 71 350oo 6 33 ConE Hawk P6E 154315 234322 47 4 32 Doolittle GB#11 124317 184322 37e335 49 46 74338 31 Bee P48344 P12B 15316 224320 444332 394 44 B9358 32 Spefld BollDog 134316 20320 40e332 53580358 32 Howard Ske&SBlke 104312 154315 31326 62345 34 Tocoeca 800cc 13312 194316 39 328 5- 340 78352 35 Now Molligan 16 315 234320 47332 64 44 94 56 33 Boa P26A Low Hog 14315 21 320 42332 63 45 84 58 35 Stlneen TSI SR7 204316 314325 42 58 Mooqolte Book 374324 41335 B1350408e365 37 Steceseen PTi16 318 244322 49 39 43 N Bik Widow P61 33340 494350 99 75 30 TAOES Nwke Ten13 144383 214318 43 36 86 42 CHelldive 5B2C4 25325 374335 26 Fond Teimote 4AT 38338 57 348 31 Ballano AlE Ron 32 322 48 330 96 52 33 Gnome J2F look194S28 29 340 58355 N 36N 27 CSeakawk F7C1 154318 234324 47338 6J35Q94e 83 28 SIk AopkLk S38 36$34 543424082B042U 16 8Pge 0-400 Rosob 55345 75956 31 Liedys LSinloe 21316 314322 B 336 31 Howard BaoPete 10312 15315 30330 0342 31 C Spackuk F9C2 124315 19322 38332 5543 8176358 33 Aceonca 13 Opt 18310 27314 534326 48 38 Toenone peeco Op 124316 184320 37336 rIght Ellen204318 304324 604838 5 AD BEPOBE ORDERING* 3/6 SCALE 1732 NILEI MT EESAIM 08088315 00PLANS AVAILABLE AT ONI 80 SURE TO ASS THE 120U GOLLAIT UNOER1I24 SIZE AL 1O7 FOR PACKAGINGIi IESFORA1L DESIGN POSTAGE ANS INOOSANCE ABOUT THOUSAND ADGITI4 PLINS MANY SIZES 75 CATALOG 3200 58 SS LIST ALONE 31. 55 AIR FOBEIGS 33 eveana e uppy 0 Edeerd 0 PeckedOnIaIiolS Nest FrIondSleoS IRIS".eP"P" 9800B BETNOI ANEN EEl LIONS 810 4 552O 5000 Snipe/Gilgenbach Continued page 128 aircraft should taxied familiarize yourself its groundhandling characteristics After running engine cycling radio taxiing check linkage connec tors nuts bolts tightness find loose components dont just retighten determine loosened take corrective action such gluing using Loctite PREFLIGHT Once became familiar operating characteristics aircraft confident everything functioning properly ready take long lonely drive flying field new model recommend following Dont go flying field day will crowded Dont take lot friends Arrange have just two helpersan experienced model builderlpilot good camcorder operator Videotape entire flying session includ aig preflight weather adverse cancel wait another day Conduct preflight inspection Check linkages connectors inspect control surfaces direction travel amount throw run engine different attitudes range-check radio FLIGHT PLAN developed flight plan would know exactly what intended would have contingencies something went wrong flight plan steps 1 Take off northwest wind flying field went has approximately 1/ mile grass direction engine died takeoff could land wind attempting tarn 2 At approximately 200 feet altitude 200 yards distance perform 180 right-hand turn 3 Climb 300 feet fly 400 yards southeast 4 Perform left-hand procedure turn 5 Fly 400 yards northwest trim controls perform right-hand procedure turn 6 Fly 400 yards southeast 7 Repeat steps 4 through 6 several times trying both high low rates elevator ailerons verbally noting control response helper video camera 8 Test flight characteristics aircraft flaps down 9 Enter right-hand landing pattern land aircraft flaps down possible After first flight inspected linkages nuts bolts connectorsnothing fallen off prototype proved quite stable too responsive controls low rate interesting activating flaps produced no pitching tendency 25 flaps engine idle landing relatively slow considering fueled aircraft weighed 25 pounds second flight explored aircrafts aerobatic characteristics surprise performed very much like pattern ship landing flaps disastrous however model caught wing tip damaging left wing nose gear After second flight checked model cleaned folded wings packed up went home review videotape video recording proved invaluable project guess thats have flight recorders airliners video showed second landing flared too soon too much causing right wing drop slighfly overcorrected models left wing hit ground After further analysis causes obvious still too much elevator aileron throw CG 28% flying skills rusty subsequent days checked out stall spin characteristics different weights CG locations TEST RESULTS 1 model flies well CG 25% 2 drooped wing tips stall DC Flight Training Beginner advanced tailored individual long-time modeler full size airplane flight instruc tor will make progress fun easy during week stay beautiful far western North Carolina Write call information RC Flight Training Rm 1704 38949GB 174 Model Aviation scale kits engines accessories want &you want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HES 1387 N Military Trail West Palm Beach FL 3340 407-68841669 HOBBY SUPER IUKL straight no tendency snap roll drop wing tip 3 slow ground speeds difficult turn model steerable nose wheel individual main gear brakes 4 ABS skin does vibrate excessively regardless engine rpm 5 Theoretically model should fly well 34 pounds hut have yet test theory 6 Elevator trim changes required flaps activated 7 Landings docile 200 400 flaps Forty degrees flap quickly slows plane greatly increases rate descent 8 No control flutter encountered 9 aircraft will spin CG less 20% full control travel CONCLUSIONS project would have successful help encouragement individuals organizations strongly recommend modelers patronize manufacturers distributors mentioned article Further wish thank flight assistantsGus Rebensburg Jerry Reichow Duncan Stewartfor time effort Based test results am now con fident feasible develop full-scale Snipe As am detail-designing big Snipe will continue use -scale model test different features building techniques cant wait get started bending tin summer 1998 Ill let know full-scale aircraft flies leads final question build full-scale model prototype -scale aircraft can enter sanctioned AMA scale contest lope SoaringlByors Continued page 106 required servo fact typical microservo will extend retract landing gear well open landing gear doors Gene has also designed over-center system retractable landing gear landing no force transmitted servo might strip servos gears over-center system also works retracted mode wheels inertia cannot throw gear out open ruggedness retract system surprising Gene has tested gear design doing push-ups install gear builder custom-fits fuselage between two bulkheads installation method serves two purposes First bulkhead mounting provides very rugged attachment inside fuselage gear cannot broken loose landing impact mounting system lets builder adjust depth wheel extension through fuselage Now meticulous scale builder want best retractable gear money can buy Cope retract probably worth considering Gene offers retract two sizes has -scale version currenfly priced $125 Cope also offers supersize -scale retract will handle really big birds tells sometime not-too-distant future will offering -scale model too Cope Retracts can contacted 32031/2 Main St Union Gap WA 98903 telephone number 509 457-9017 modelers friends contacted during month Mr Darrel Johnson Mesa Arizona suggested discuss balance models Well perfectly honest sometimes just mount model atop left right index fingers quick dirty Other times ever procedure bit exacting use balance stand balance stand simple device can built just few minutes aid good old Hot Stuff similar product stand built -inch plywood other plywood approximately size drawing outlines construction shows supporting fillets keep stand breaking large load applied drawing also details round edge stand upon model placed reason use stand quite obvious want obtain balance point model accurately possible stand much easier Using fingers balance model turns procedure somewhat juggling act However can place model stand make weight VIDEO_____ JOY OF FLYING FREE very informative 42 minute VHS video displaying phenomena free flight its variations great PR video can used effectively educate uninitiated art model aviation video professionally produced National Free Flight Society features both indoor outdoor activity available NIFFS 1655 Revere Drive Brookfield WI 53045 * Include Check $2500 plus $300 P&H per tape Buy 4 VgPEOS FREE #17 92 SCALEMASTER CHAMPS STAR MUS PIMA AIR MUS ALABAMA 2 Hrn.$1995 #16 AIRCRAFT GUNTERSYILLE AL AVAL AIR MUS PENSACOLA FL 2 Hn.51996 #1 592 WORLD SCALE CHAMPSAMA INVTL SHOOTOUT W INTL SCALEMASTERS 2 Hn.$1995 #1492 NW SEAPLANE CHAMPS EN SCALE AVIATION IN AUSTRALIA2 Hm.$1995 3 op Gun Invitari oledo Model topo s Air Museum2 Nra. 51996 #12- 91 Scalemasters tao Vegas 91 DSAA Las Vegas 91 NWlntl2 Hre.$1916 C #11 Scalemaster Aircraft Preview Mfg Visdw1tlan Parsons- 91 NWteaplanethamps 2 Kn.S1996 Z#1O 91 Tup Gun W Palm Bch Fl SsA Lao Vegas W Model topu2 Iin.$1996 90 Scalemasters Champs Irving TX hidbey 101 Scalemos5ers an Diego Aerospace Moo 2 Hra.51996 90 NW Intl Scalemasters Farragot Park-Athol ID m Champlin Fighter Museum w/tou Proctor W Seaplane ps Santa Monica Mos Flying 2 Mn. 51995 #7 op Gun Invitational Mesa AZ W Model Eupo2 Hrs.$1995 #6 89 Scalemasters Champs St Louis ake lianaso m Schneider Cop Races2 IIrs.$19gG 89 US NaIls Scale & Seaplanes 89 NW Seaplane Champs Planes Fame taut Moo Moo DshkoshVisit mw/Ralph Beck Chicago Mo Sci & Ind 2 Hs.$1995 #4 09 Top Gon Champo Coral Springs FL tor Albatroo DVA Preview atIs Seaplane Site NW ntl oScalemasters tor N-li Test Flight 2 Hre.S1I96 IA Special Edition Proctor Enterprises Atbatroo OVA Brief Conotr Engine Radio Irrntall& Teat Ftigbto 2 Hra $1996 Cuetias JN4D Jenny Plan FUN SCALE 109 inches 1804 sq 11 lbs 8 sheets w/instroctions 51996 10807 SE STACY CT PORTLAND OR 97266 PHONE 503653-25780 FAX 503 6781342 SEND STAMP FOR COMPLETE LIST PAL & SECAM ORDERS CONCEPTS 17 MILPERA CRESCENT WANTIRNA VIC 3152 AUSTRALIA e 03801-3899 03887-3472 BETA CARLSON ENGINE IMPORTS 814 East Marconi Phoenix AZ 85022-3112 IMPORTED DIESEL ENGINES Worlds Best Selection AE AM Aurora Cipolla D-C KMD MAP Mikro MK MWS Oliver PAW Pfeffer Silver Swallow USE Also Replica Mills MOVO Letmo diesels rare imported glow engines CO motor sets Ten page catalog 1 00 May1993 175
Edition: Model Aviation - 1993/05
Page Numbers: 56, 57, 59, 60, 61, 62, 123, 126, 127, 128, 174, 175
PART TWO LAST MONTH explained steps required design full-scale homebuilt aircraft also gave reasons believe -scale RC model design should built tested month design construction testing model will discussed MATERIAL AND HARDWARE SELECTION goal pick good quality readily available products would allow simulation assembly processes would use building full-scale aircraft model aircraft substructure chose use plywoodaircraft quality Lite Plyand balsa such critical areas wing spars landing gear wing folding joints used aluminum and/or 4130N steel depending strength requirements skinning aircraft used 0 10inch-thick ABS plastic should give good indication what will encounter skinning fullscale aircraft 016- 040-inch-thick aluminum sheet needed use adhesives could bond plywood balsa Styrofoam fiberglass steel aluminum ABS plastic Satellite City able meet requirements UFO Thin UFO Thick adhesives plus Hot Shot Kick-It accelerators instant bonding necessary UFO Thin worked well UFO Thick allows repositioning parts before adhesive sets especially important during skinning process feature appreciate about UFO doesnt give off irritating gas some CyA glues Du-Bro Products has complete line quality hardware items including scale wheels hinges control horns pushrods wheel collars blind nuts etc used Du-Bro hardware wherever possible pushrodl clevis assemblies coil spring locks used control surfaces ensure safe reliable connections ENGINE SELECTION different engine types sizes considered before made final selection objective ability swing 18 x 10 prop approximately 7000 rpm didnt want use gasoline fuel because its relatively dangerous handling characteristics considered methanol-burning engines several multicylinder engines could have done job initial cost prohibitive single-cylinder methanol-burning engines available OPS 30 Maxi Shamrock Competition Imports Inc offers best value Its powerful engine has good starting idling transition throttling characteristics Other appealing features muffler locations flexibility engines light weight converted leaf-blower engine specifically designed power model aircraft 15- 22pound range Although ringed engine manufacturer still recommends breaking about hour no problem meI always run engines quite familiarize myself ensure everything functioning properly before taking air 56 Model Aviation month previewed full-scale Snipe Now lets build model U James Gilgenbach selected Cool Power Tartan/Bully fuel specifically blended engine size type have excellent results Cool Power past application no exception Another benefit using Cool Power opposed factoryrecommended 5% castor oil 95% methanol added rust] corrosion protection wanted lightweight three-inch-diameter aluminum spinner would fit OPS 30 Maxi look good Tm-Turn TT-300B proved excellent selection modified TT-300B cutting slots fit 18 x 10 prop Tm-Turn has big scale spinner available doesnt require drilling backplate engine drive pins drilling tapping prop washer prop backplate two 6-32 bolts drilling tapping OPS 30 Maxi prop nut 10-32 spinner bolt modifications lock prop engine fashion similar used full-scale aircraft Both Zinger wood props Dynathrust composite props performed well props OPS 30 Maxi turned following rpm 18 x 6 18 x 8 18 x 10 18 x 8/14 20 x 8 Zinger 8100 rpm 7500 rpm 6800 rpm 6200 rpm 5800rpm 18 x 8 18 x 10 Dynathrust 7400 rpm 6700 rpm RADIO SELECTION Futaba 7UAP radio control system offers options required handle -scale Snipe options include following 1 Ailerons separate S148 servos aileron Y connector AEC 4 b Extensions AEC 11 2 Elevator 8134 -scale servo 3 Rudder S 134 -scale servo 4 Flaps S134 -scale servo 5 Throttle S148 servo 6 Elevator trim tab S148 servo 7 Airborne battery pack NR-4LB 1000 mAb Type 114-scaIe test model Wingspan 76 inches Recommended motor size type OPS 30 Maxi Number RC channels recommended Six Expected flying weight 25 pounds Type construction Built-up Type of covering finish recommended ABS plastic skin K&B Super Poxy May1993 57 crashcomponents shown prior assembly model can readily stripped down necessary shipping storage Models skin 010 ABS plastic ne cowl canopy hatch open just will fullscale aircraft allowing access instruments Full Size Plans AvailableSee Page 184 -- - LIQ 8 Charger FBC-6B4 programmable transmitter allows fine-tuning flight controls need modify mechanical linkages feature saved least 20 hours trialand-error testing also like built-in timer can used monitor long radio has discharging servos tight thus eliminating control drift need constantly change trim MODEL CONSTRUCTION SEQUENCE basic steps build model follows 1 Build skin horizontal vertical stabilizers elevator rudder 2 Build fuselage including console turtledeck top Build engine/nosewbeel mount 3 Make landing gear parts steel spar caps 4 Build center wing section 5 Build outer wing sectionsleave top spar cap loose 6 Assemble wing sections adjust dihedral 7 Make install flaps ailerons 8 Fit wing horizontal vertical stabilizers fuselage 9 Install engine muffler nose gear 10 Install aileron servos make hatches 11 Skin fuselage interior Make install turtledeck front fuselage top May1993 59 L Steel weights hold bottom fuselage side skin placeTwo 6-32 bolts two 2-56 bolts attach removable until UFO Thick sets up Fuselage longerons used keyempennage fuselage control surfaces use music wire alignment surfaceshinge pins easy assembly/disassembly bulkhead stiffens center section Futaba S148 servo mounted canopy frame has temporary cross fuselage Empennage control rods wing section actuate ailerons Most braces added until Plexiglas canopy cables run through center console wing ribs 18 Lite Ply glued screwed place I1__ __I eJKL F V K ~~o V r 1 K JK C- IF 7 3 F F MATE1AS 4_ EM E empennage fairing 12 Make fit cowl canopy 13 Skin remaining parts model 14 Install rest radio components balance model 15 Paint accessories add trim EMPENNAGE substructure empennage made balsa Lite Ply assembly can done using variety accepted tech niques chose drill holes through ribs use music wire rods alignment Although elevator has separate trim tab model does need normal RC flying empennage assembly attached fuselage two 6-32 bolts two 2-56 bolts can removed storage maintenance tips rudder elevator have lead added balance control surfaces covered white Super MonoKote glued control surfaces IJFO FUSELAGE fuselage built upside down plans top cowling turtledeck added later Overall alignment critical 60 Model Aviation ofoam glued cowl frame sanded shape cowl assembly removed fuselage fibergiassed six-ounce cloth Hobbypoxy Formula 2 lsa frame used locate cowl engine OPS 30 Maxi runs very coola streamlined cowl could have added around cylinder head order determine best skinning process started making empennage messed up skinning replacement vertical horizontal stabilizer substruc ture would traumatic wing substructure replacement OPS 30 Maxi excellent choice power Snipe pulls model Toothpick pins added elevator hinges due location beneath through maneuver effort models skin Trim tab prototype necessary normal flying uI 4\ w -J IV\ -\ May1993 61 producing good-flying aircraft have found several tools invaluable es tablishing alignment follows 1 Steel squaring blocks least three required 2 12-in combination square/level 3 6-in machinists scale 4 72-in straightedge/scale 5 16-in x 24-in carpenters square 6 Incidence meter 7 Wing horizontal stabilizer airfoil tem plates 1/s-in plywood coated UFO Thin 8 Flat work table 2 ft x 5 ft minimum 9 0-clamps 10 T-pins 11 Masking tape 12 Alignment/building fixtures gauges Explaining use tools could consume enough pages 62 Model Aviation * Vertical stabilizer rudder built simple fixture holds wing place Root ribs stiffened 1/16-in balsa directly over plans Rudder post during skinning operation skin sheeting Spar caps 025 4130N steel features full-length music wire pin gives wing much its rigidity laminated between 1/ie ply 1/i6 balsa wing skin attached leading edge contact Completed skin looks beautiful fixture eliminates wing twist cement prevent cracking over period time UFO adheres skin misalignment Wings have degree washout skin balance structure built Continued page 123 original torsion bar nosewheel Without skin Snipes structure very flimsy just like its full-scale allowed nose dip too much high brothers text contains complete skinning instructions grass fields plans show fixed gear 24 N NIPE Snipe/Gilgenbach Continued page 62 separate article will detail use However several rules thumb should followed concerning alignment First never check alignment dimension once Check over several times preferably several different ways Second dont get engrossed details forget basics example making two left wings Third eyeball alignments look wrong probably Fourth add temporary braces structures flimsy until structures covered skinned fuselage main structure alignments set top longerons should used starting point alignments Wing dihedral incidence well horizontal stabilizer incidence parallelism should set reference longerons LANDING GEAR debated whether present details scale landing gear article drawings full-scale gear will use torsion bars hydraulic shock absorbers intent minimize weight full-scale gear yet still provide good shockabsorbing qualities different approaches can taken meet criteria want learn book Landing Gear Design Light Aircraft L Pazmany excellent source concluded gear far too complex anyone just wants goodflying less-than-exact-scale model took several hundred hours design machine parts milling/drilling machine metal lathe went through exercise because needed develop knowledge build fullscale aircraft gear recommend model referred Wittman-type gear because Steve Wittman originally developed full-scale aircraft aircraft use expensive high-alloy steel gear legs Continued page 126 May1993 123 original landing gear somewhat complex intended simulate full-scale gear much-simplified Wittman-type gear design made 1/4-inch-diameter music wire shown plans swivel joint machined allow prototypes wings fold Wing pins #6 tapered complex feature shown plansremovable panels have substituted OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLAYBOY SR KIT 112A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $330 STOCK ORDERS SHIPPED WITHIN 24 HRS W Composites fiberglass experts video shows descnbes easy use composites construct basic lamination 1993 catalog included $5-off coupon towards first order Approximately 60 minutes Only $2495 plus $450 shipping handlingi Z e Glast Developments Corporalion 800 821-3283 SnipelGilgenbach Continued page 123 modelers have material available strong yet less expensive music wire truly amazing steel Most model aircraft use gear type because simple durable WING models wing made simulate folding feature full-scale aircraft practical standpoint however normal model would need removable wing panels what Ive shown plans prototype model used #6 tapered pins hold wing sections together feature required some difficult machining plans show hex-head cap screw nylon-insert locknut unusual feature wing design use 025-in-thick x 75-inwide 4130N steel wing spar caps wing designed handle 9OG 45G ultimate loadsthe loads structural failure occurs full-scale aircraft would exceed loads 6OG 3OG under normal aerobatic conditions model haphazard flying tech niques possible attain much higher loads Therefore prudence must exercised flying model Wing construction simplified through use wing fixture notched front rear spar webs building sequence follows 1 Make wing fixture using miscellaneous pieces lumber have around workshop Make spars ribs 2 Cut 14 steel spar caps six long eight short length radius ends drill mounting lightening holes deburr sand 3 Cut out A6 x 3/4 plywood Aa x 3/4 balsa spar caps glue steel caps outer wing panels using UFO Thick 4 Cut out notch plywood spar webs Make sure webs fit snugly wing fixture 5 Using UFO Thick glue boltom outer front wing spar caps wing webs 6 Clamp outer wing panel front spar assemblies fixture position rear spar web ribs fixture 7 Align ribs glue spar webs Note glue top front spar cap yet 8 Glue leading edge front ribs 9 Glue rear plywood spar caps ribs rear spar web remove assembly fixture 10 Screw bottom outer main spar caps wing web block 11 Repeat operations 6 through 10 other outer wing panel 12 Glue 1/16 x 3/4 plywood balsa spar caps center wing steel spar cap 13 Glue plywood front spar web center bottom front spar cap assembly 14 Clamp assembly fixture position rear spar web ribs fixture 15 Align ribs vertically using square glue spar webs glue two end ribs lime 16 Glue top front spar cap ribs spar web 17 Glue leading edge two rear plywood spar caps ribs rear spar web Remove assembly fixture 18 Screw spar caps wing web block 19 Glue four wing-locating dowels place outer wing panels 20 Assemble outer wing panels center wing panel adjust dihedral angles sliding top wing spar caps outer panels 21 Clamp two end ribs center wing section two end ribs outer wing sections 020-in-thick shims between ribs shims thickness two pieces 010 ABS plastic 22 Glue top outer wing spar caps center section outer ribs place 23 Screw top outer wing spar caps wing web blocks 24 Shape sand leading edges three wing panels match ailerons flaps can built over plans flat surface intercon necting flap swivel tubes should aligned glued swivel joint installed flap sections aligned wing retracted position Note control surfaces use music wire through hinges easy assembly disassembly models wing tips made balsa plywood bolted outer wing rib two 6-32 socket-head cap screws could also glued place intend try several different wing tip types deter give best stall characteristics CANOPY canopy made heating stretch ing 040-in Plexiglas over plug follows 1 Make plug wood coat epoxy 2 Sand epoxy smooth texture surface will transfer directly inside canopy formed 3 Attach handles two sides Plexi glas sheet 4 Heat sheet plug oven until Plexiglas starts sag 5 Remove both oven stretch Plexiglas over plug repeated process several times get final shape 6 Make canopy frame 7 Trim attach canopy frame using UFO #1 flat-head wood screws COWL AND WHEEL PANTS Make cowl following sequence 1 Cut out plywood cowl framework 126 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPS! PROMPT SHIPMENT ON VISAdMC SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 2 Glue framework several Styrofoam blocks 3 Cut sand Styrofoam shape 4 Cover assembly layer six-oz fiberglass cloth used Hobbypoxy Formula 2 bond fill cloth 5 After epoxy hardwait least daytrim off excess fiberglass sand rough edges high points apply heavy coat Hobbypoxy mixed 50/50 microballoons 6 Wait least day rough sand outer surface shape 7 Split cowl hollow out Styro foam leave 3A-in-thick Styrofoam wall inside half 8 Sand Styrofoam wail smooth apply layer six-oz fiberglass inside half 9 Wait another day trim sand excess fiberglass Add hinges holddown latches hinges T-pins 10 Reassemble two halves finish sanding cowl halves exceptionally rigid assure good fit attached cowl fuselage matchsanded Remember compensate 0l0-in-thick ABS fuselage skin wheel pants can made forming Styrofoam plug covering two layers six-oz fiberglass coating fiberglass 50/50 epoxy/microballoon mix sanding shape hollowing out Styrofoam SKINNING PAINT AND TRIM Sand contour stabilizer smooth Remove dust loose particles Cut out 010-in ABS plastic skin slighfly larger area covered Cut skin wrap around leading edge allow enough stock overlap leading edge control surface stabilizers trailing edge Place skin onto hot approximately lOOT flat surface tape down end used wifes glass-topped dining room table space heater underside glass necessary skin will tight normal room temperature Run bead UFO Thick trailing edge ribs up leading edge top side horizontal stabilizer Start ing top gives better chance spot misalignment skin best part skinning job visible can start either side vertical stabilizer Press trailing edge onto skin leaving h-in overhang Roll stabilizer skin toward leading edge pulling stabilizer toward yourself keep skin taut Remember taped opposite edge glass table Hold pressure assembly about minute UFO sets Remove assembly table apply UFO Thick leading edge top front bottom Tape skin table again roll skin around leading edge making sure skin tight Hold pressure assembly about minute Remove assembly table skin should now glued tightly around leading edge Now apply UFO Thick ribs trailing edge remaining side Tape edge skin table roll stabilizer onto skin Hold pressure assembly about minute Remove structure table trim edges sharp knife sanding block structure cools should stiff tight skin exposed rib sides can covered ABS plastic paint commercially available heat-shrinkable plastic covering may used skin folded trailing edges elevator rudder yields goodlooking straight trailing edges Folding ABS plastic can present problem however following technique should used 1 Build sand control surface Remove loose particles 2 Cut ABS skin slightly larger required 3 Lay thin 025-in steel straightedge onto skin fold line weight clamp down end 4 hard pencil draw trailing edge fold line Push down hard pencil plastic scored scratched 5 Fold skin over straightedge creating 1800 bend 6 Remove straightedge fold skin flat fold line should now straight 7 Tape top side skin heated glass table 8 Apply UFO Thick top side control surface substructure 9 Position substructure onto skin Press roll attach skin Hold pressure assembly about minute 10 Remove assembly table apply UFO Thick opposite side substructure 11 Repeat operation 9 opposite side 12 Trim off excess skin rudder rolled skin halfway around leading edge side elevator covered leading edge separately wing panels subsequently skinned using same procedure horizontal stabilizer ailerons flaps skinned using same procedure elevator fuselage sides skinned first turtledeck finally bottom using basically same techniquesplacing skin warm worktable applying UFO Thick structure pressing rolling structure skin Through trial error Ive learned several interesting things working 010 ABS plastic accidentally spill epoxy plastic denatured alcohol will remove epoxy damaging plastic Once P-40 WARHA WK Made USA SPECIFICATIONS WINGSPAN 60 ENGINE SUE60 2-EEROKE WEIGIfT7-8 LBS IIV7RO PRiCE$16000 ALL KITS FEATURE BAND LAID FIBERGLASS FUSEIAGEPANEL UNES SCALE DETAILSFOAM CORE WINGS MACHINE CITE FORMERS & BULKHEADS SEE YOUR LOCAL DEALER OR CALL HOBBY IL4NGAR 606-2&3-5 746 FOR IMMEDIATE DEUVERY DE4LER INQUIRIES WELCOME WEACCEPT VISA MASTERCARD & DISCOVER CARDS WEGLADLYSHIP COD SHIPPING 114 NDUNG $309 PER KIT CONTINENTAL USA OilIER AREAS CALL KE VCKY RESIDENIS ADD 6% SALES TAX HOBBY HANGAR ISA FULL SERVICE HOBBY SHOP WITH OVER 11000 ITEMS IN STOCI CATALOGS VAILABLE $400 EACH WIREBATE ON FIRST ORDER SPECIITE PIANEHELICOPTER OR CAR HANGAR EXaUCSIVEDISTRWTCW FIBER SCALE MODELS 153 LLOYD AVE R2VDW KY 41042 606-283-5746 IYW 606-2853889 FAX May1993 127 FOCKE WULF 190 Made USA SPECIFICATIONS WINGSPAN 65 ENGINE SIZE6090 2-SISOKE 90-120 4-SEROKE WEIGIIr9-10 LBS IPTERO PRICE SPECIFICATIONS WINGSPAN 60 ENGINE SIZE WEIGhT 60 2-SIROKE 8-ES LBS CESSNA 150Made USA SPEClFICATIONS WINGSPAN 65 ENGINE SUE WEIGHT 45-60 2-SEROKE 7-75 LBS QUALIT WTEGITY SRV1CE QJLALTr INTEGUTY SiR VICE QJJALIrY INTEGRITY SERVICE 5~ tJ uJ GRTYSER VICE 3950-AValIeyBIvd WALNUT CA 91789 Li w A T PE RR 0 0 F ci C S T FA R N ED EI N G U 01 O0 0 IIEAm OOD Jo C PLME 0' U SHADE 51g-i5 ni CALL OR WRITE FOR FREE BROCHURE Pitts-Style Mufflers UNIVERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2185 SI-SI IT-GOP $2385 MOKI 61 JT-MK61P 52595 UNIVERSAL 9OlT ON Side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts supplied muffler JT-40P8 29-45 $2285 JT-A91PASP 1002995 JT-F74PFOX 742995 JT-M100PMAXOl-lOS2995 JT-BGXPMAX BGXI3495 JT-5T69PST 61-75-902995 JT-ST25PST 25-30002995 JT-MK150PMOKI 153495 JT JT-W12OPWEBRA 1202995 5161 ZJTECI MAIL ORDER se add $255 UPS shippIng Check MO Visa MC COO accepted Add $400 extra COD California residents add 8% sales tax 255 Eat Alillorld/FO 8xx727/Sodo Springs dubs 82276 ULTIMATESPORT RC UlTIMATE 5-305 Mlii12085473742F F,nh5ed 5555 epoxy sets will have lot trouble removing may have sand off Removing UFO ABS plastic tricky Put small amount Zap Z-7 Debonder onto clean rag lightly wipe over UFO rub too hard too long Z-7 will cut plastic dull surface Z-7 can bring back shine Turtle Wax white automotive polishing compound Sooner later will scratch ABS skin occurs scratches can removed sanding 1200-grit wet-ordry sandpaper rubbing polishing compound sanding rubbing skin dont push too hard skin may crack attached structure plastic can shrunk using heat gun also very easy melt will shrink enough force warp substructure dont recommend heatshrinking minimize wrinlding sunlight plastic should preheated before installation K&B thinner cuts ABS plastic K&B epoxy sticks well especially thinned Conversely dont use K&B thinner cleanupuse denatured alcohol miscellaneous parts painted K&B primer K&B Super Poxy parts made plywood balsa spruce steel aluminum brass epoxy fiberglass resin ABS plastic Ive never found paint sands holds up better K&B worked equally well over materials order save weight time chose paint entire aircraft However did sand polish skin blemishes scratches used Jumbo Stripe Kit Eagle Products trim model decals easy install durable look good Eagle Products offers several different color schemes can individualize aircraft Personally like fluorescent pink/blue/purple combination TESTINGAT HOME Before taking new model flying field several things should always done First check center gravity CG should between 23% 27% wing chord first few flights flown CG 28% would recommend adding weight nose necessary get CG 25% wing chord engine should test run aircraft set up different attitudes eg nose up nose down inverted uprightto check run consistency radio equipment should actively cycled hour recharged cycled again hour test will also reveal control surface/linkage hang-ups radio must range-checked both engine running stopped Dont forget tie down plane Continued page 174 128 Model Aviation uSt extensions worm drive mounting strap Included MGLASS ALES INC W Fiberglass Headquarters * BUY DIRECT * Super Bond S mit Epony Epoxy Lsminxting Resins Cyanoacrylate Adhesives Glones ective Hand Creams Masits ns Polyester Resin al SprayerLaminating Bnsshes ers Acetate Fiberglass Fiilers Tongue Depressom Mioing Paddles sive Discs Sandpaper Foam Brushes Fine-Weave Median Heaxy Weight cloth ar on Fibers TECHNICAL INFORMATION Kenlar Tap. snarbon fib, tap. CALITOLL FREE earbon tiber tand available IMI WI ors ul 1-800-589-4444 18621 8 Nne MileRoad EastpointuMichigsn48O2l 313 777-2032Fax 313 7770350 Foao Flnis 5da, AI~ Lon4g Osar clerr Conopy Aailabl e,iIde KjI S255~ shasred Kr S5u5~Olna Sheered KI SUSS Over 70 Kits Fox Engines best prices FREE CATALOG DoCs Generix Controline P0 BOX 111 Jasonville IN 47438 Tel 812-665-3723 WORLDS LARGEST SCALE PLANS & DOCUMENTATN SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS ze 120 PAGE CATALOG 55 00 USA & CANADA StOQO AIR OVERSEAS Jim Pepmnos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE NSBORO NC 27403 292-5239 WORLDSMOSPAOTNEMTI MOD PLANSALL PATTERNS INCLUDED SCALEOFPL&NS*-DSFOPOP OP RSABBBEVIATED NAME 1/SASZ 1/L6SZ 1/B SE 1/6 SZ 1/4SZ 37 OeHov Cootec Rone 22320 324332 66344 132068 40 Vooght Cone P45 20320 30326 60345 15 Con JN4S Jenny 21318 32324 65$38 86 352 27 Llodbeoge 80211 15314 34 324 69334 91348 29 Wano TaperWing I5314 22 $20 45334 6034850362 36 Weatlod Lynanden 25319 37 324 75338 OA 2 35 Soog 046A Obon 23324 34332 68346 29 Boeing 100 Spont 15316 224324 453361603 nin Tninoton 30330 43338 90 6212037 39 LoOk Licknog P 39 Gee P38AFlghEn 184315 28 20 56334 I 2 25 VgE CoeD 0281/4 08320 27 28 38 Con CoElna PBY5o 52 48 78 60S04I~1A 19 Coctien NC4 624366 94089 17 Fekken 57 Ftc 14312 21316 8 o4349 31 Baylen GeeBee 114312 17314 35332T4344 75356 13 Sepenolanlon 068 15310 44432616038 8952 36 GroIn GolOhank 144314 214388 43$38 SCALE PLAN 35 Look Electra #11 27325 60332 55338 Look Slow 34 43 GroIn nengen TRE 30328 40 338 803 2 Fond 3M 4AT6 42 Roe B17G FlyFoct 51345 77 35 Roe 8170 36 38 NA MItohell 825 364337 55352 NA 525 36 34 MnoolCato088C72 154315 23322 454335 MeG N 826 6 37 Con Navy 003C1 19318 284324 57336 lEOn Tnt 4 25 CRaoen R3C-1 &2 11 315 164320 3 3 Nod1yPo e 6 34 Doog Tonoep SC3 47340 71 350oo 6 33 ConE Hawk P6E 154315 234322 47 4 32 Doolittle GB#11 124317 184322 37e335 49 46 74338 31 Bee P48344 P12B 15316 224320 444332 394 44 B9358 32 Spefld BollDog 134316 20320 40e332 53580358 32 Howard Ske&SBlke 104312 154315 31326 62345 34 Tocoeca 800cc 13312 194316 39 328 5- 340 78352 35 Now Molligan 16 315 234320 47332 64 44 94 56 33 Boa P26A Low Hog 14315 21 320 42332 63 45 84 58 35 Stlneen TSI SR7 204316 314325 42 58 Mooqolte Book 374324 41335 B1350408e365 37 Steceseen PTi16 318 244322 49 39 43 N Bik Widow P61 33340 494350 99 75 30 TAOES Nwke Ten13 144383 214318 43 36 86 42 CHelldive 5B2C4 25325 374335 26 Fond Teimote 4AT 38338 57 348 31 Ballano AlE Ron 32 322 48 330 96 52 33 Gnome J2F look194S28 29 340 58355 N 36N 27 CSeakawk F7C1 154318 234324 47338 6J35Q94e 83 28 SIk AopkLk S38 36$34 543424082B042U 16 8Pge 0-400 Rosob 55345 75956 31 Liedys LSinloe 21316 314322 B 336 31 Howard BaoPete 10312 15315 30330 0342 31 C Spackuk F9C2 124315 19322 38332 5543 8176358 33 Aceonca 13 Opt 18310 27314 534326 48 38 Toenone peeco Op 124316 184320 37336 rIght Ellen204318 304324 604838 5 AD BEPOBE ORDERING* 3/6 SCALE 1732 NILEI MT EESAIM 08088315 00PLANS AVAILABLE AT ONI 80 SURE TO ASS THE 120U GOLLAIT UNOER1I24 SIZE AL 1O7 FOR PACKAGINGIi IESFORA1L DESIGN POSTAGE ANS INOOSANCE ABOUT THOUSAND ADGITI4 PLINS MANY SIZES 75 CATALOG 3200 58 SS LIST ALONE 31. 55 AIR FOBEIGS 33 eveana e uppy 0 Edeerd 0 PeckedOnIaIiolS Nest FrIondSleoS IRIS".eP"P" 9800B BETNOI ANEN EEl LIONS 810 4 552O 5000 Snipe/Gilgenbach Continued page 128 aircraft should taxied familiarize yourself its groundhandling characteristics After running engine cycling radio taxiing check linkage connec tors nuts bolts tightness find loose components dont just retighten determine loosened take corrective action such gluing using Loctite PREFLIGHT Once became familiar operating characteristics aircraft confident everything functioning properly ready take long lonely drive flying field new model recommend following Dont go flying field day will crowded Dont take lot friends Arrange have just two helpersan experienced model builderlpilot good camcorder operator Videotape entire flying session includ aig preflight weather adverse cancel wait another day Conduct preflight inspection Check linkages connectors inspect control surfaces direction travel amount throw run engine different attitudes range-check radio FLIGHT PLAN developed flight plan would know exactly what intended would have contingencies something went wrong flight plan steps 1 Take off northwest wind flying field went has approximately 1/ mile grass direction engine died takeoff could land wind attempting tarn 2 At approximately 200 feet altitude 200 yards distance perform 180 right-hand turn 3 Climb 300 feet fly 400 yards southeast 4 Perform left-hand procedure turn 5 Fly 400 yards northwest trim controls perform right-hand procedure turn 6 Fly 400 yards southeast 7 Repeat steps 4 through 6 several times trying both high low rates elevator ailerons verbally noting control response helper video camera 8 Test flight characteristics aircraft flaps down 9 Enter right-hand landing pattern land aircraft flaps down possible After first flight inspected linkages nuts bolts connectorsnothing fallen off prototype proved quite stable too responsive controls low rate interesting activating flaps produced no pitching tendency 25 flaps engine idle landing relatively slow considering fueled aircraft weighed 25 pounds second flight explored aircrafts aerobatic characteristics surprise performed very much like pattern ship landing flaps disastrous however model caught wing tip damaging left wing nose gear After second flight checked model cleaned folded wings packed up went home review videotape video recording proved invaluable project guess thats have flight recorders airliners video showed second landing flared too soon too much causing right wing drop slighfly overcorrected models left wing hit ground After further analysis causes obvious still too much elevator aileron throw CG 28% flying skills rusty subsequent days checked out stall spin characteristics different weights CG locations TEST RESULTS 1 model flies well CG 25% 2 drooped wing tips stall DC Flight Training Beginner advanced tailored individual long-time modeler full size airplane flight instruc tor will make progress fun easy during week stay beautiful far western North Carolina Write call information RC Flight Training Rm 1704 38949GB 174 Model Aviation scale kits engines accessories want &you want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HES 1387 N Military Trail West Palm Beach FL 3340 407-68841669 HOBBY SUPER IUKL straight no tendency snap roll drop wing tip 3 slow ground speeds difficult turn model steerable nose wheel individual main gear brakes 4 ABS skin does vibrate excessively regardless engine rpm 5 Theoretically model should fly well 34 pounds hut have yet test theory 6 Elevator trim changes required flaps activated 7 Landings docile 200 400 flaps Forty degrees flap quickly slows plane greatly increases rate descent 8 No control flutter encountered 9 aircraft will spin CG less 20% full control travel CONCLUSIONS project would have successful help encouragement individuals organizations strongly recommend modelers patronize manufacturers distributors mentioned article Further wish thank flight assistantsGus Rebensburg Jerry Reichow Duncan Stewartfor time effort Based test results am now con fident feasible develop full-scale Snipe As am detail-designing big Snipe will continue use -scale model test different features building techniques cant wait get started bending tin summer 1998 Ill let know full-scale aircraft flies leads final question build full-scale model prototype -scale aircraft can enter sanctioned AMA scale contest lope SoaringlByors Continued page 106 required servo fact typical microservo will extend retract landing gear well open landing gear doors Gene has also designed over-center system retractable landing gear landing no force transmitted servo might strip servos gears over-center system also works retracted mode wheels inertia cannot throw gear out open ruggedness retract system surprising Gene has tested gear design doing push-ups install gear builder custom-fits fuselage between two bulkheads installation method serves two purposes First bulkhead mounting provides very rugged attachment inside fuselage gear cannot broken loose landing impact mounting system lets builder adjust depth wheel extension through fuselage Now meticulous scale builder want best retractable gear money can buy Cope retract probably worth considering Gene offers retract two sizes has -scale version currenfly priced $125 Cope also offers supersize -scale retract will handle really big birds tells sometime not-too-distant future will offering -scale model too Cope Retracts can contacted 32031/2 Main St Union Gap WA 98903 telephone number 509 457-9017 modelers friends contacted during month Mr Darrel Johnson Mesa Arizona suggested discuss balance models Well perfectly honest sometimes just mount model atop left right index fingers quick dirty Other times ever procedure bit exacting use balance stand balance stand simple device can built just few minutes aid good old Hot Stuff similar product stand built -inch plywood other plywood approximately size drawing outlines construction shows supporting fillets keep stand breaking large load applied drawing also details round edge stand upon model placed reason use stand quite obvious want obtain balance point model accurately possible stand much easier Using fingers balance model turns procedure somewhat juggling act However can place model stand make weight VIDEO_____ JOY OF FLYING FREE very informative 42 minute VHS video displaying phenomena free flight its variations great PR video can used effectively educate uninitiated art model aviation video professionally produced National Free Flight Society features both indoor outdoor activity available NIFFS 1655 Revere Drive Brookfield WI 53045 * Include Check $2500 plus $300 P&H per tape Buy 4 VgPEOS FREE #17 92 SCALEMASTER CHAMPS STAR MUS PIMA AIR MUS ALABAMA 2 Hrn.$1995 #16 AIRCRAFT GUNTERSYILLE AL AVAL AIR MUS PENSACOLA FL 2 Hn.51996 #1 592 WORLD SCALE CHAMPSAMA INVTL SHOOTOUT W INTL SCALEMASTERS 2 Hn.$1995 #1492 NW SEAPLANE CHAMPS EN SCALE AVIATION IN AUSTRALIA2 Hm.$1995 3 op Gun Invitari oledo Model topo s Air Museum2 Nra. 51996 #12- 91 Scalemasters tao Vegas 91 DSAA Las Vegas 91 NWlntl2 Hre.$1916 C #11 Scalemaster Aircraft Preview Mfg Visdw1tlan Parsons- 91 NWteaplanethamps 2 Kn.S1996 Z#1O 91 Tup Gun W Palm Bch Fl SsA Lao Vegas W Model topu2 Iin.$1996 90 Scalemasters Champs Irving TX hidbey 101 Scalemos5ers an Diego Aerospace Moo 2 Hra.51996 90 NW Intl Scalemasters Farragot Park-Athol ID m Champlin Fighter Museum w/tou Proctor W Seaplane ps Santa Monica Mos Flying 2 Mn. 51995 #7 op Gun Invitational Mesa AZ W Model Eupo2 Hrs.$1995 #6 89 Scalemasters Champs St Louis ake lianaso m Schneider Cop Races2 IIrs.$19gG 89 US NaIls Scale & Seaplanes 89 NW Seaplane Champs Planes Fame taut Moo Moo DshkoshVisit mw/Ralph Beck Chicago Mo Sci & Ind 2 Hs.$1995 #4 09 Top Gon Champo Coral Springs FL tor Albatroo DVA Preview atIs Seaplane Site NW ntl oScalemasters tor N-li Test Flight 2 Hre.S1I96 IA Special Edition Proctor Enterprises Atbatroo OVA Brief Conotr Engine Radio Irrntall& Teat Ftigbto 2 Hra $1996 Cuetias JN4D Jenny Plan FUN SCALE 109 inches 1804 sq 11 lbs 8 sheets w/instroctions 51996 10807 SE STACY CT PORTLAND OR 97266 PHONE 503653-25780 FAX 503 6781342 SEND STAMP FOR COMPLETE LIST PAL & SECAM ORDERS CONCEPTS 17 MILPERA CRESCENT WANTIRNA VIC 3152 AUSTRALIA e 03801-3899 03887-3472 BETA CARLSON ENGINE IMPORTS 814 East Marconi Phoenix AZ 85022-3112 IMPORTED DIESEL ENGINES Worlds Best Selection AE AM Aurora Cipolla D-C KMD MAP Mikro MK MWS Oliver PAW Pfeffer Silver Swallow USE Also Replica Mills MOVO Letmo diesels rare imported glow engines CO motor sets Ten page catalog 1 00 May1993 175
Edition: Model Aviation - 1993/05
Page Numbers: 56, 57, 59, 60, 61, 62, 123, 126, 127, 128, 174, 175
PART TWO LAST MONTH explained steps required design full-scale homebuilt aircraft also gave reasons believe -scale RC model design should built tested month design construction testing model will discussed MATERIAL AND HARDWARE SELECTION goal pick good quality readily available products would allow simulation assembly processes would use building full-scale aircraft model aircraft substructure chose use plywoodaircraft quality Lite Plyand balsa such critical areas wing spars landing gear wing folding joints used aluminum and/or 4130N steel depending strength requirements skinning aircraft used 0 10inch-thick ABS plastic should give good indication what will encounter skinning fullscale aircraft 016- 040-inch-thick aluminum sheet needed use adhesives could bond plywood balsa Styrofoam fiberglass steel aluminum ABS plastic Satellite City able meet requirements UFO Thin UFO Thick adhesives plus Hot Shot Kick-It accelerators instant bonding necessary UFO Thin worked well UFO Thick allows repositioning parts before adhesive sets especially important during skinning process feature appreciate about UFO doesnt give off irritating gas some CyA glues Du-Bro Products has complete line quality hardware items including scale wheels hinges control horns pushrods wheel collars blind nuts etc used Du-Bro hardware wherever possible pushrodl clevis assemblies coil spring locks used control surfaces ensure safe reliable connections ENGINE SELECTION different engine types sizes considered before made final selection objective ability swing 18 x 10 prop approximately 7000 rpm didnt want use gasoline fuel because its relatively dangerous handling characteristics considered methanol-burning engines several multicylinder engines could have done job initial cost prohibitive single-cylinder methanol-burning engines available OPS 30 Maxi Shamrock Competition Imports Inc offers best value Its powerful engine has good starting idling transition throttling characteristics Other appealing features muffler locations flexibility engines light weight converted leaf-blower engine specifically designed power model aircraft 15- 22pound range Although ringed engine manufacturer still recommends breaking about hour no problem meI always run engines quite familiarize myself ensure everything functioning properly before taking air 56 Model Aviation month previewed full-scale Snipe Now lets build model U James Gilgenbach selected Cool Power Tartan/Bully fuel specifically blended engine size type have excellent results Cool Power past application no exception Another benefit using Cool Power opposed factoryrecommended 5% castor oil 95% methanol added rust] corrosion protection wanted lightweight three-inch-diameter aluminum spinner would fit OPS 30 Maxi look good Tm-Turn TT-300B proved excellent selection modified TT-300B cutting slots fit 18 x 10 prop Tm-Turn has big scale spinner available doesnt require drilling backplate engine drive pins drilling tapping prop washer prop backplate two 6-32 bolts drilling tapping OPS 30 Maxi prop nut 10-32 spinner bolt modifications lock prop engine fashion similar used full-scale aircraft Both Zinger wood props Dynathrust composite props performed well props OPS 30 Maxi turned following rpm 18 x 6 18 x 8 18 x 10 18 x 8/14 20 x 8 Zinger 8100 rpm 7500 rpm 6800 rpm 6200 rpm 5800rpm 18 x 8 18 x 10 Dynathrust 7400 rpm 6700 rpm RADIO SELECTION Futaba 7UAP radio control system offers options required handle -scale Snipe options include following 1 Ailerons separate S148 servos aileron Y connector AEC 4 b Extensions AEC 11 2 Elevator 8134 -scale servo 3 Rudder S 134 -scale servo 4 Flaps S134 -scale servo 5 Throttle S148 servo 6 Elevator trim tab S148 servo 7 Airborne battery pack NR-4LB 1000 mAb Type 114-scaIe test model Wingspan 76 inches Recommended motor size type OPS 30 Maxi Number RC channels recommended Six Expected flying weight 25 pounds Type construction Built-up Type of covering finish recommended ABS plastic skin K&B Super Poxy May1993 57 crashcomponents shown prior assembly model can readily stripped down necessary shipping storage Models skin 010 ABS plastic ne cowl canopy hatch open just will fullscale aircraft allowing access instruments Full Size Plans AvailableSee Page 184 -- - LIQ 8 Charger FBC-6B4 programmable transmitter allows fine-tuning flight controls need modify mechanical linkages feature saved least 20 hours trialand-error testing also like built-in timer can used monitor long radio has discharging servos tight thus eliminating control drift need constantly change trim MODEL CONSTRUCTION SEQUENCE basic steps build model follows 1 Build skin horizontal vertical stabilizers elevator rudder 2 Build fuselage including console turtledeck top Build engine/nosewbeel mount 3 Make landing gear parts steel spar caps 4 Build center wing section 5 Build outer wing sectionsleave top spar cap loose 6 Assemble wing sections adjust dihedral 7 Make install flaps ailerons 8 Fit wing horizontal vertical stabilizers fuselage 9 Install engine muffler nose gear 10 Install aileron servos make hatches 11 Skin fuselage interior Make install turtledeck front fuselage top May1993 59 L Steel weights hold bottom fuselage side skin placeTwo 6-32 bolts two 2-56 bolts attach removable until UFO Thick sets up Fuselage longerons used keyempennage fuselage control surfaces use music wire alignment surfaceshinge pins easy assembly/disassembly bulkhead stiffens center section Futaba S148 servo mounted canopy frame has temporary cross fuselage Empennage control rods wing section actuate ailerons Most braces added until Plexiglas canopy cables run through center console wing ribs 18 Lite Ply glued screwed place I1__ __I eJKL F V K ~~o V r 1 K JK C- IF 7 3 F F MATE1AS 4_ EM E empennage fairing 12 Make fit cowl canopy 13 Skin remaining parts model 14 Install rest radio components balance model 15 Paint accessories add trim EMPENNAGE substructure empennage made balsa Lite Ply assembly can done using variety accepted tech niques chose drill holes through ribs use music wire rods alignment Although elevator has separate trim tab model does need normal RC flying empennage assembly attached fuselage two 6-32 bolts two 2-56 bolts can removed storage maintenance tips rudder elevator have lead added balance control surfaces covered white Super MonoKote glued control surfaces IJFO FUSELAGE fuselage built upside down plans top cowling turtledeck added later Overall alignment critical 60 Model Aviation ofoam glued cowl frame sanded shape cowl assembly removed fuselage fibergiassed six-ounce cloth Hobbypoxy Formula 2 lsa frame used locate cowl engine OPS 30 Maxi runs very coola streamlined cowl could have added around cylinder head order determine best skinning process started making empennage messed up skinning replacement vertical horizontal stabilizer substruc ture would traumatic wing substructure replacement OPS 30 Maxi excellent choice power Snipe pulls model Toothpick pins added elevator hinges due location beneath through maneuver effort models skin Trim tab prototype necessary normal flying uI 4\ w -J IV\ -\ May1993 61 producing good-flying aircraft have found several tools invaluable es tablishing alignment follows 1 Steel squaring blocks least three required 2 12-in combination square/level 3 6-in machinists scale 4 72-in straightedge/scale 5 16-in x 24-in carpenters square 6 Incidence meter 7 Wing horizontal stabilizer airfoil tem plates 1/s-in plywood coated UFO Thin 8 Flat work table 2 ft x 5 ft minimum 9 0-clamps 10 T-pins 11 Masking tape 12 Alignment/building fixtures gauges Explaining use tools could consume enough pages 62 Model Aviation * Vertical stabilizer rudder built simple fixture holds wing place Root ribs stiffened 1/16-in balsa directly over plans Rudder post during skinning operation skin sheeting Spar caps 025 4130N steel features full-length music wire pin gives wing much its rigidity laminated between 1/ie ply 1/i6 balsa wing skin attached leading edge contact Completed skin looks beautiful fixture eliminates wing twist cement prevent cracking over period time UFO adheres skin misalignment Wings have degree washout skin balance structure built Continued page 123 original torsion bar nosewheel Without skin Snipes structure very flimsy just like its full-scale allowed nose dip too much high brothers text contains complete skinning instructions grass fields plans show fixed gear 24 N NIPE Snipe/Gilgenbach Continued page 62 separate article will detail use However several rules thumb should followed concerning alignment First never check alignment dimension once Check over several times preferably several different ways Second dont get engrossed details forget basics example making two left wings Third eyeball alignments look wrong probably Fourth add temporary braces structures flimsy until structures covered skinned fuselage main structure alignments set top longerons should used starting point alignments Wing dihedral incidence well horizontal stabilizer incidence parallelism should set reference longerons LANDING GEAR debated whether present details scale landing gear article drawings full-scale gear will use torsion bars hydraulic shock absorbers intent minimize weight full-scale gear yet still provide good shockabsorbing qualities different approaches can taken meet criteria want learn book Landing Gear Design Light Aircraft L Pazmany excellent source concluded gear far too complex anyone just wants goodflying less-than-exact-scale model took several hundred hours design machine parts milling/drilling machine metal lathe went through exercise because needed develop knowledge build fullscale aircraft gear recommend model referred Wittman-type gear because Steve Wittman originally developed full-scale aircraft aircraft use expensive high-alloy steel gear legs Continued page 126 May1993 123 original landing gear somewhat complex intended simulate full-scale gear much-simplified Wittman-type gear design made 1/4-inch-diameter music wire shown plans swivel joint machined allow prototypes wings fold Wing pins #6 tapered complex feature shown plansremovable panels have substituted OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLAYBOY SR KIT 112A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $330 STOCK ORDERS SHIPPED WITHIN 24 HRS W Composites fiberglass experts video shows descnbes easy use composites construct basic lamination 1993 catalog included $5-off coupon towards first order Approximately 60 minutes Only $2495 plus $450 shipping handlingi Z e Glast Developments Corporalion 800 821-3283 SnipelGilgenbach Continued page 123 modelers have material available strong yet less expensive music wire truly amazing steel Most model aircraft use gear type because simple durable WING models wing made simulate folding feature full-scale aircraft practical standpoint however normal model would need removable wing panels what Ive shown plans prototype model used #6 tapered pins hold wing sections together feature required some difficult machining plans show hex-head cap screw nylon-insert locknut unusual feature wing design use 025-in-thick x 75-inwide 4130N steel wing spar caps wing designed handle 9OG 45G ultimate loadsthe loads structural failure occurs full-scale aircraft would exceed loads 6OG 3OG under normal aerobatic conditions model haphazard flying tech niques possible attain much higher loads Therefore prudence must exercised flying model Wing construction simplified through use wing fixture notched front rear spar webs building sequence follows 1 Make wing fixture using miscellaneous pieces lumber have around workshop Make spars ribs 2 Cut 14 steel spar caps six long eight short length radius ends drill mounting lightening holes deburr sand 3 Cut out A6 x 3/4 plywood Aa x 3/4 balsa spar caps glue steel caps outer wing panels using UFO Thick 4 Cut out notch plywood spar webs Make sure webs fit snugly wing fixture 5 Using UFO Thick glue boltom outer front wing spar caps wing webs 6 Clamp outer wing panel front spar assemblies fixture position rear spar web ribs fixture 7 Align ribs glue spar webs Note glue top front spar cap yet 8 Glue leading edge front ribs 9 Glue rear plywood spar caps ribs rear spar web remove assembly fixture 10 Screw bottom outer main spar caps wing web block 11 Repeat operations 6 through 10 other outer wing panel 12 Glue 1/16 x 3/4 plywood balsa spar caps center wing steel spar cap 13 Glue plywood front spar web center bottom front spar cap assembly 14 Clamp assembly fixture position rear spar web ribs fixture 15 Align ribs vertically using square glue spar webs glue two end ribs lime 16 Glue top front spar cap ribs spar web 17 Glue leading edge two rear plywood spar caps ribs rear spar web Remove assembly fixture 18 Screw spar caps wing web block 19 Glue four wing-locating dowels place outer wing panels 20 Assemble outer wing panels center wing panel adjust dihedral angles sliding top wing spar caps outer panels 21 Clamp two end ribs center wing section two end ribs outer wing sections 020-in-thick shims between ribs shims thickness two pieces 010 ABS plastic 22 Glue top outer wing spar caps center section outer ribs place 23 Screw top outer wing spar caps wing web blocks 24 Shape sand leading edges three wing panels match ailerons flaps can built over plans flat surface intercon necting flap swivel tubes should aligned glued swivel joint installed flap sections aligned wing retracted position Note control surfaces use music wire through hinges easy assembly disassembly models wing tips made balsa plywood bolted outer wing rib two 6-32 socket-head cap screws could also glued place intend try several different wing tip types deter give best stall characteristics CANOPY canopy made heating stretch ing 040-in Plexiglas over plug follows 1 Make plug wood coat epoxy 2 Sand epoxy smooth texture surface will transfer directly inside canopy formed 3 Attach handles two sides Plexi glas sheet 4 Heat sheet plug oven until Plexiglas starts sag 5 Remove both oven stretch Plexiglas over plug repeated process several times get final shape 6 Make canopy frame 7 Trim attach canopy frame using UFO #1 flat-head wood screws COWL AND WHEEL PANTS Make cowl following sequence 1 Cut out plywood cowl framework 126 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPS! PROMPT SHIPMENT ON VISAdMC SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 2 Glue framework several Styrofoam blocks 3 Cut sand Styrofoam shape 4 Cover assembly layer six-oz fiberglass cloth used Hobbypoxy Formula 2 bond fill cloth 5 After epoxy hardwait least daytrim off excess fiberglass sand rough edges high points apply heavy coat Hobbypoxy mixed 50/50 microballoons 6 Wait least day rough sand outer surface shape 7 Split cowl hollow out Styro foam leave 3A-in-thick Styrofoam wall inside half 8 Sand Styrofoam wail smooth apply layer six-oz fiberglass inside half 9 Wait another day trim sand excess fiberglass Add hinges holddown latches hinges T-pins 10 Reassemble two halves finish sanding cowl halves exceptionally rigid assure good fit attached cowl fuselage matchsanded Remember compensate 0l0-in-thick ABS fuselage skin wheel pants can made forming Styrofoam plug covering two layers six-oz fiberglass coating fiberglass 50/50 epoxy/microballoon mix sanding shape hollowing out Styrofoam SKINNING PAINT AND TRIM Sand contour stabilizer smooth Remove dust loose particles Cut out 010-in ABS plastic skin slighfly larger area covered Cut skin wrap around leading edge allow enough stock overlap leading edge control surface stabilizers trailing edge Place skin onto hot approximately lOOT flat surface tape down end used wifes glass-topped dining room table space heater underside glass necessary skin will tight normal room temperature Run bead UFO Thick trailing edge ribs up leading edge top side horizontal stabilizer Start ing top gives better chance spot misalignment skin best part skinning job visible can start either side vertical stabilizer Press trailing edge onto skin leaving h-in overhang Roll stabilizer skin toward leading edge pulling stabilizer toward yourself keep skin taut Remember taped opposite edge glass table Hold pressure assembly about minute UFO sets Remove assembly table apply UFO Thick leading edge top front bottom Tape skin table again roll skin around leading edge making sure skin tight Hold pressure assembly about minute Remove assembly table skin should now glued tightly around leading edge Now apply UFO Thick ribs trailing edge remaining side Tape edge skin table roll stabilizer onto skin Hold pressure assembly about minute Remove structure table trim edges sharp knife sanding block structure cools should stiff tight skin exposed rib sides can covered ABS plastic paint commercially available heat-shrinkable plastic covering may used skin folded trailing edges elevator rudder yields goodlooking straight trailing edges Folding ABS plastic can present problem however following technique should used 1 Build sand control surface Remove loose particles 2 Cut ABS skin slightly larger required 3 Lay thin 025-in steel straightedge onto skin fold line weight clamp down end 4 hard pencil draw trailing edge fold line Push down hard pencil plastic scored scratched 5 Fold skin over straightedge creating 1800 bend 6 Remove straightedge fold skin flat fold line should now straight 7 Tape top side skin heated glass table 8 Apply UFO Thick top side control surface substructure 9 Position substructure onto skin Press roll attach skin Hold pressure assembly about minute 10 Remove assembly table apply UFO Thick opposite side substructure 11 Repeat operation 9 opposite side 12 Trim off excess skin rudder rolled skin halfway around leading edge side elevator covered leading edge separately wing panels subsequently skinned using same procedure horizontal stabilizer ailerons flaps skinned using same procedure elevator fuselage sides skinned first turtledeck finally bottom using basically same techniquesplacing skin warm worktable applying UFO Thick structure pressing rolling structure skin Through trial error Ive learned several interesting things working 010 ABS plastic accidentally spill epoxy plastic denatured alcohol will remove epoxy damaging plastic Once P-40 WARHA WK Made USA SPECIFICATIONS WINGSPAN 60 ENGINE SUE60 2-EEROKE WEIGIfT7-8 LBS IIV7RO PRiCE$16000 ALL KITS FEATURE BAND LAID FIBERGLASS FUSEIAGEPANEL UNES SCALE DETAILSFOAM CORE WINGS MACHINE CITE FORMERS & BULKHEADS SEE YOUR LOCAL DEALER OR CALL HOBBY IL4NGAR 606-2&3-5 746 FOR IMMEDIATE DEUVERY DE4LER INQUIRIES WELCOME WEACCEPT VISA MASTERCARD & DISCOVER CARDS WEGLADLYSHIP COD SHIPPING 114 NDUNG $309 PER KIT CONTINENTAL USA OilIER AREAS CALL KE VCKY RESIDENIS ADD 6% SALES TAX HOBBY HANGAR ISA FULL SERVICE HOBBY SHOP WITH OVER 11000 ITEMS IN STOCI CATALOGS VAILABLE $400 EACH WIREBATE ON FIRST ORDER SPECIITE PIANEHELICOPTER OR CAR HANGAR EXaUCSIVEDISTRWTCW FIBER SCALE MODELS 153 LLOYD AVE R2VDW KY 41042 606-283-5746 IYW 606-2853889 FAX May1993 127 FOCKE WULF 190 Made USA SPECIFICATIONS WINGSPAN 65 ENGINE SIZE6090 2-SISOKE 90-120 4-SEROKE WEIGIIr9-10 LBS IPTERO PRICE SPECIFICATIONS WINGSPAN 60 ENGINE SIZE WEIGhT 60 2-SIROKE 8-ES LBS CESSNA 150Made USA SPEClFICATIONS WINGSPAN 65 ENGINE SUE WEIGHT 45-60 2-SEROKE 7-75 LBS QUALIT WTEGITY SRV1CE QJLALTr INTEGUTY SiR VICE QJJALIrY INTEGRITY SERVICE 5~ tJ uJ GRTYSER VICE 3950-AValIeyBIvd WALNUT CA 91789 Li w A T PE RR 0 0 F ci C S T FA R N ED EI N G U 01 O0 0 IIEAm OOD Jo C PLME 0' U SHADE 51g-i5 ni CALL OR WRITE FOR FREE BROCHURE Pitts-Style Mufflers UNIVERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2185 SI-SI IT-GOP $2385 MOKI 61 JT-MK61P 52595 UNIVERSAL 9OlT ON Side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts supplied muffler JT-40P8 29-45 $2285 JT-A91PASP 1002995 JT-F74PFOX 742995 JT-M100PMAXOl-lOS2995 JT-BGXPMAX BGXI3495 JT-5T69PST 61-75-902995 JT-ST25PST 25-30002995 JT-MK150PMOKI 153495 JT JT-W12OPWEBRA 1202995 5161 ZJTECI MAIL ORDER se add $255 UPS shippIng Check MO Visa MC COO accepted Add $400 extra COD California residents add 8% sales tax 255 Eat Alillorld/FO 8xx727/Sodo Springs dubs 82276 ULTIMATESPORT RC UlTIMATE 5-305 Mlii12085473742F F,nh5ed 5555 epoxy sets will have lot trouble removing may have sand off Removing UFO ABS plastic tricky Put small amount Zap Z-7 Debonder onto clean rag lightly wipe over UFO rub too hard too long Z-7 will cut plastic dull surface Z-7 can bring back shine Turtle Wax white automotive polishing compound Sooner later will scratch ABS skin occurs scratches can removed sanding 1200-grit wet-ordry sandpaper rubbing polishing compound sanding rubbing skin dont push too hard skin may crack attached structure plastic can shrunk using heat gun also very easy melt will shrink enough force warp substructure dont recommend heatshrinking minimize wrinlding sunlight plastic should preheated before installation K&B thinner cuts ABS plastic K&B epoxy sticks well especially thinned Conversely dont use K&B thinner cleanupuse denatured alcohol miscellaneous parts painted K&B primer K&B Super Poxy parts made plywood balsa spruce steel aluminum brass epoxy fiberglass resin ABS plastic Ive never found paint sands holds up better K&B worked equally well over materials order save weight time chose paint entire aircraft However did sand polish skin blemishes scratches used Jumbo Stripe Kit Eagle Products trim model decals easy install durable look good Eagle Products offers several different color schemes can individualize aircraft Personally like fluorescent pink/blue/purple combination TESTINGAT HOME Before taking new model flying field several things should always done First check center gravity CG should between 23% 27% wing chord first few flights flown CG 28% would recommend adding weight nose necessary get CG 25% wing chord engine should test run aircraft set up different attitudes eg nose up nose down inverted uprightto check run consistency radio equipment should actively cycled hour recharged cycled again hour test will also reveal control surface/linkage hang-ups radio must range-checked both engine running stopped Dont forget tie down plane Continued page 174 128 Model Aviation uSt extensions worm drive mounting strap Included MGLASS ALES INC W Fiberglass Headquarters * BUY DIRECT * Super Bond S mit Epony Epoxy Lsminxting Resins Cyanoacrylate Adhesives Glones ective Hand Creams Masits ns Polyester Resin al SprayerLaminating Bnsshes ers Acetate Fiberglass Fiilers Tongue Depressom Mioing Paddles sive Discs Sandpaper Foam Brushes Fine-Weave Median Heaxy Weight cloth ar on Fibers TECHNICAL INFORMATION Kenlar Tap. snarbon fib, tap. CALITOLL FREE earbon tiber tand available IMI WI ors ul 1-800-589-4444 18621 8 Nne MileRoad EastpointuMichigsn48O2l 313 777-2032Fax 313 7770350 Foao Flnis 5da, AI~ Lon4g Osar clerr Conopy Aailabl e,iIde KjI S255~ shasred Kr S5u5~Olna Sheered KI SUSS Over 70 Kits Fox Engines best prices FREE CATALOG DoCs Generix Controline P0 BOX 111 Jasonville IN 47438 Tel 812-665-3723 WORLDS LARGEST SCALE PLANS & DOCUMENTATN SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS ze 120 PAGE CATALOG 55 00 USA & CANADA StOQO AIR OVERSEAS Jim Pepmnos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE NSBORO NC 27403 292-5239 WORLDSMOSPAOTNEMTI MOD PLANSALL PATTERNS INCLUDED SCALEOFPL&NS*-DSFOPOP OP RSABBBEVIATED NAME 1/SASZ 1/L6SZ 1/B SE 1/6 SZ 1/4SZ 37 OeHov Cootec Rone 22320 324332 66344 132068 40 Vooght Cone P45 20320 30326 60345 15 Con JN4S Jenny 21318 32324 65$38 86 352 27 Llodbeoge 80211 15314 34 324 69334 91348 29 Wano TaperWing I5314 22 $20 45334 6034850362 36 Weatlod Lynanden 25319 37 324 75338 OA 2 35 Soog 046A Obon 23324 34332 68346 29 Boeing 100 Spont 15316 224324 453361603 nin Tninoton 30330 43338 90 6212037 39 LoOk Licknog P 39 Gee P38AFlghEn 184315 28 20 56334 I 2 25 VgE CoeD 0281/4 08320 27 28 38 Con CoElna PBY5o 52 48 78 60S04I~1A 19 Coctien NC4 624366 94089 17 Fekken 57 Ftc 14312 21316 8 o4349 31 Baylen GeeBee 114312 17314 35332T4344 75356 13 Sepenolanlon 068 15310 44432616038 8952 36 GroIn GolOhank 144314 214388 43$38 SCALE PLAN 35 Look Electra #11 27325 60332 55338 Look Slow 34 43 GroIn nengen TRE 30328 40 338 803 2 Fond 3M 4AT6 42 Roe B17G FlyFoct 51345 77 35 Roe 8170 36 38 NA MItohell 825 364337 55352 NA 525 36 34 MnoolCato088C72 154315 23322 454335 MeG N 826 6 37 Con Navy 003C1 19318 284324 57336 lEOn Tnt 4 25 CRaoen R3C-1 &2 11 315 164320 3 3 Nod1yPo e 6 34 Doog Tonoep SC3 47340 71 350oo 6 33 ConE Hawk P6E 154315 234322 47 4 32 Doolittle GB#11 124317 184322 37e335 49 46 74338 31 Bee P48344 P12B 15316 224320 444332 394 44 B9358 32 Spefld BollDog 134316 20320 40e332 53580358 32 Howard Ske&SBlke 104312 154315 31326 62345 34 Tocoeca 800cc 13312 194316 39 328 5- 340 78352 35 Now Molligan 16 315 234320 47332 64 44 94 56 33 Boa P26A Low Hog 14315 21 320 42332 63 45 84 58 35 Stlneen TSI SR7 204316 314325 42 58 Mooqolte Book 374324 41335 B1350408e365 37 Steceseen PTi16 318 244322 49 39 43 N Bik Widow P61 33340 494350 99 75 30 TAOES Nwke Ten13 144383 214318 43 36 86 42 CHelldive 5B2C4 25325 374335 26 Fond Teimote 4AT 38338 57 348 31 Ballano AlE Ron 32 322 48 330 96 52 33 Gnome J2F look194S28 29 340 58355 N 36N 27 CSeakawk F7C1 154318 234324 47338 6J35Q94e 83 28 SIk AopkLk S38 36$34 543424082B042U 16 8Pge 0-400 Rosob 55345 75956 31 Liedys LSinloe 21316 314322 B 336 31 Howard BaoPete 10312 15315 30330 0342 31 C Spackuk F9C2 124315 19322 38332 5543 8176358 33 Aceonca 13 Opt 18310 27314 534326 48 38 Toenone peeco Op 124316 184320 37336 rIght Ellen204318 304324 604838 5 AD BEPOBE ORDERING* 3/6 SCALE 1732 NILEI MT EESAIM 08088315 00PLANS AVAILABLE AT ONI 80 SURE TO ASS THE 120U GOLLAIT UNOER1I24 SIZE AL 1O7 FOR PACKAGINGIi IESFORA1L DESIGN POSTAGE ANS INOOSANCE ABOUT THOUSAND ADGITI4 PLINS MANY SIZES 75 CATALOG 3200 58 SS LIST ALONE 31. 55 AIR FOBEIGS 33 eveana e uppy 0 Edeerd 0 PeckedOnIaIiolS Nest FrIondSleoS IRIS".eP"P" 9800B BETNOI ANEN EEl LIONS 810 4 552O 5000 Snipe/Gilgenbach Continued page 128 aircraft should taxied familiarize yourself its groundhandling characteristics After running engine cycling radio taxiing check linkage connec tors nuts bolts tightness find loose components dont just retighten determine loosened take corrective action such gluing using Loctite PREFLIGHT Once became familiar operating characteristics aircraft confident everything functioning properly ready take long lonely drive flying field new model recommend following Dont go flying field day will crowded Dont take lot friends Arrange have just two helpersan experienced model builderlpilot good camcorder operator Videotape entire flying session includ aig preflight weather adverse cancel wait another day Conduct preflight inspection Check linkages connectors inspect control surfaces direction travel amount throw run engine different attitudes range-check radio FLIGHT PLAN developed flight plan would know exactly what intended would have contingencies something went wrong flight plan steps 1 Take off northwest wind flying field went has approximately 1/ mile grass direction engine died takeoff could land wind attempting tarn 2 At approximately 200 feet altitude 200 yards distance perform 180 right-hand turn 3 Climb 300 feet fly 400 yards southeast 4 Perform left-hand procedure turn 5 Fly 400 yards northwest trim controls perform right-hand procedure turn 6 Fly 400 yards southeast 7 Repeat steps 4 through 6 several times trying both high low rates elevator ailerons verbally noting control response helper video camera 8 Test flight characteristics aircraft flaps down 9 Enter right-hand landing pattern land aircraft flaps down possible After first flight inspected linkages nuts bolts connectorsnothing fallen off prototype proved quite stable too responsive controls low rate interesting activating flaps produced no pitching tendency 25 flaps engine idle landing relatively slow considering fueled aircraft weighed 25 pounds second flight explored aircrafts aerobatic characteristics surprise performed very much like pattern ship landing flaps disastrous however model caught wing tip damaging left wing nose gear After second flight checked model cleaned folded wings packed up went home review videotape video recording proved invaluable project guess thats have flight recorders airliners video showed second landing flared too soon too much causing right wing drop slighfly overcorrected models left wing hit ground After further analysis causes obvious still too much elevator aileron throw CG 28% flying skills rusty subsequent days checked out stall spin characteristics different weights CG locations TEST RESULTS 1 model flies well CG 25% 2 drooped wing tips stall DC Flight Training Beginner advanced tailored individual long-time modeler full size airplane flight instruc tor will make progress fun easy during week stay beautiful far western North Carolina Write call information RC Flight Training Rm 1704 38949GB 174 Model Aviation scale kits engines accessories want &you want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HES 1387 N Military Trail West Palm Beach FL 3340 407-68841669 HOBBY SUPER IUKL straight no tendency snap roll drop wing tip 3 slow ground speeds difficult turn model steerable nose wheel individual main gear brakes 4 ABS skin does vibrate excessively regardless engine rpm 5 Theoretically model should fly well 34 pounds hut have yet test theory 6 Elevator trim changes required flaps activated 7 Landings docile 200 400 flaps Forty degrees flap quickly slows plane greatly increases rate descent 8 No control flutter encountered 9 aircraft will spin CG less 20% full control travel CONCLUSIONS project would have successful help encouragement individuals organizations strongly recommend modelers patronize manufacturers distributors mentioned article Further wish thank flight assistantsGus Rebensburg Jerry Reichow Duncan Stewartfor time effort Based test results am now con fident feasible develop full-scale Snipe As am detail-designing big Snipe will continue use -scale model test different features building techniques cant wait get started bending tin summer 1998 Ill let know full-scale aircraft flies leads final question build full-scale model prototype -scale aircraft can enter sanctioned AMA scale contest lope SoaringlByors Continued page 106 required servo fact typical microservo will extend retract landing gear well open landing gear doors Gene has also designed over-center system retractable landing gear landing no force transmitted servo might strip servos gears over-center system also works retracted mode wheels inertia cannot throw gear out open ruggedness retract system surprising Gene has tested gear design doing push-ups install gear builder custom-fits fuselage between two bulkheads installation method serves two purposes First bulkhead mounting provides very rugged attachment inside fuselage gear cannot broken loose landing impact mounting system lets builder adjust depth wheel extension through fuselage Now meticulous scale builder want best retractable gear money can buy Cope retract probably worth considering Gene offers retract two sizes has -scale version currenfly priced $125 Cope also offers supersize -scale retract will handle really big birds tells sometime not-too-distant future will offering -scale model too Cope Retracts can contacted 32031/2 Main St Union Gap WA 98903 telephone number 509 457-9017 modelers friends contacted during month Mr Darrel Johnson Mesa Arizona suggested discuss balance models Well perfectly honest sometimes just mount model atop left right index fingers quick dirty Other times ever procedure bit exacting use balance stand balance stand simple device can built just few minutes aid good old Hot Stuff similar product stand built -inch plywood other plywood approximately size drawing outlines construction shows supporting fillets keep stand breaking large load applied drawing also details round edge stand upon model placed reason use stand quite obvious want obtain balance point model accurately possible stand much easier Using fingers balance model turns procedure somewhat juggling act However can place model stand make weight VIDEO_____ JOY OF FLYING FREE very informative 42 minute VHS video displaying phenomena free flight its variations great PR video can used effectively educate uninitiated art model aviation video professionally produced National Free Flight Society features both indoor outdoor activity available NIFFS 1655 Revere Drive Brookfield WI 53045 * Include Check $2500 plus $300 P&H per tape Buy 4 VgPEOS FREE #17 92 SCALEMASTER CHAMPS STAR MUS PIMA AIR MUS ALABAMA 2 Hrn.$1995 #16 AIRCRAFT GUNTERSYILLE AL AVAL AIR MUS PENSACOLA FL 2 Hn.51996 #1 592 WORLD SCALE CHAMPSAMA INVTL SHOOTOUT W INTL SCALEMASTERS 2 Hn.$1995 #1492 NW SEAPLANE CHAMPS EN SCALE AVIATION IN AUSTRALIA2 Hm.$1995 3 op Gun Invitari oledo Model topo s Air Museum2 Nra. 51996 #12- 91 Scalemasters tao Vegas 91 DSAA Las Vegas 91 NWlntl2 Hre.$1916 C #11 Scalemaster Aircraft Preview Mfg Visdw1tlan Parsons- 91 NWteaplanethamps 2 Kn.S1996 Z#1O 91 Tup Gun W Palm Bch Fl SsA Lao Vegas W Model topu2 Iin.$1996 90 Scalemasters Champs Irving TX hidbey 101 Scalemos5ers an Diego Aerospace Moo 2 Hra.51996 90 NW Intl Scalemasters Farragot Park-Athol ID m Champlin Fighter Museum w/tou Proctor W Seaplane ps Santa Monica Mos Flying 2 Mn. 51995 #7 op Gun Invitational Mesa AZ W Model Eupo2 Hrs.$1995 #6 89 Scalemasters Champs St Louis ake lianaso m Schneider Cop Races2 IIrs.$19gG 89 US NaIls Scale & Seaplanes 89 NW Seaplane Champs Planes Fame taut Moo Moo DshkoshVisit mw/Ralph Beck Chicago Mo Sci & Ind 2 Hs.$1995 #4 09 Top Gon Champo Coral Springs FL tor Albatroo DVA Preview atIs Seaplane Site NW ntl oScalemasters tor N-li Test Flight 2 Hre.S1I96 IA Special Edition Proctor Enterprises Atbatroo OVA Brief Conotr Engine Radio Irrntall& Teat Ftigbto 2 Hra $1996 Cuetias JN4D Jenny Plan FUN SCALE 109 inches 1804 sq 11 lbs 8 sheets w/instroctions 51996 10807 SE STACY CT PORTLAND OR 97266 PHONE 503653-25780 FAX 503 6781342 SEND STAMP FOR COMPLETE LIST PAL & SECAM ORDERS CONCEPTS 17 MILPERA CRESCENT WANTIRNA VIC 3152 AUSTRALIA e 03801-3899 03887-3472 BETA CARLSON ENGINE IMPORTS 814 East Marconi Phoenix AZ 85022-3112 IMPORTED DIESEL ENGINES Worlds Best Selection AE AM Aurora Cipolla D-C KMD MAP Mikro MK MWS Oliver PAW Pfeffer Silver Swallow USE Also Replica Mills MOVO Letmo diesels rare imported glow engines CO motor sets Ten page catalog 1 00 May1993 175
Edition: Model Aviation - 1993/05
Page Numbers: 56, 57, 59, 60, 61, 62, 123, 126, 127, 128, 174, 175
PART TWO LAST MONTH explained steps required design full-scale homebuilt aircraft also gave reasons believe -scale RC model design should built tested month design construction testing model will discussed MATERIAL AND HARDWARE SELECTION goal pick good quality readily available products would allow simulation assembly processes would use building full-scale aircraft model aircraft substructure chose use plywoodaircraft quality Lite Plyand balsa such critical areas wing spars landing gear wing folding joints used aluminum and/or 4130N steel depending strength requirements skinning aircraft used 0 10inch-thick ABS plastic should give good indication what will encounter skinning fullscale aircraft 016- 040-inch-thick aluminum sheet needed use adhesives could bond plywood balsa Styrofoam fiberglass steel aluminum ABS plastic Satellite City able meet requirements UFO Thin UFO Thick adhesives plus Hot Shot Kick-It accelerators instant bonding necessary UFO Thin worked well UFO Thick allows repositioning parts before adhesive sets especially important during skinning process feature appreciate about UFO doesnt give off irritating gas some CyA glues Du-Bro Products has complete line quality hardware items including scale wheels hinges control horns pushrods wheel collars blind nuts etc used Du-Bro hardware wherever possible pushrodl clevis assemblies coil spring locks used control surfaces ensure safe reliable connections ENGINE SELECTION different engine types sizes considered before made final selection objective ability swing 18 x 10 prop approximately 7000 rpm didnt want use gasoline fuel because its relatively dangerous handling characteristics considered methanol-burning engines several multicylinder engines could have done job initial cost prohibitive single-cylinder methanol-burning engines available OPS 30 Maxi Shamrock Competition Imports Inc offers best value Its powerful engine has good starting idling transition throttling characteristics Other appealing features muffler locations flexibility engines light weight converted leaf-blower engine specifically designed power model aircraft 15- 22pound range Although ringed engine manufacturer still recommends breaking about hour no problem meI always run engines quite familiarize myself ensure everything functioning properly before taking air 56 Model Aviation month previewed full-scale Snipe Now lets build model U James Gilgenbach selected Cool Power Tartan/Bully fuel specifically blended engine size type have excellent results Cool Power past application no exception Another benefit using Cool Power opposed factoryrecommended 5% castor oil 95% methanol added rust] corrosion protection wanted lightweight three-inch-diameter aluminum spinner would fit OPS 30 Maxi look good Tm-Turn TT-300B proved excellent selection modified TT-300B cutting slots fit 18 x 10 prop Tm-Turn has big scale spinner available doesnt require drilling backplate engine drive pins drilling tapping prop washer prop backplate two 6-32 bolts drilling tapping OPS 30 Maxi prop nut 10-32 spinner bolt modifications lock prop engine fashion similar used full-scale aircraft Both Zinger wood props Dynathrust composite props performed well props OPS 30 Maxi turned following rpm 18 x 6 18 x 8 18 x 10 18 x 8/14 20 x 8 Zinger 8100 rpm 7500 rpm 6800 rpm 6200 rpm 5800rpm 18 x 8 18 x 10 Dynathrust 7400 rpm 6700 rpm RADIO SELECTION Futaba 7UAP radio control system offers options required handle -scale Snipe options include following 1 Ailerons separate S148 servos aileron Y connector AEC 4 b Extensions AEC 11 2 Elevator 8134 -scale servo 3 Rudder S 134 -scale servo 4 Flaps S134 -scale servo 5 Throttle S148 servo 6 Elevator trim tab S148 servo 7 Airborne battery pack NR-4LB 1000 mAb Type 114-scaIe test model Wingspan 76 inches Recommended motor size type OPS 30 Maxi Number RC channels recommended Six Expected flying weight 25 pounds Type construction Built-up Type of covering finish recommended ABS plastic skin K&B Super Poxy May1993 57 crashcomponents shown prior assembly model can readily stripped down necessary shipping storage Models skin 010 ABS plastic ne cowl canopy hatch open just will fullscale aircraft allowing access instruments Full Size Plans AvailableSee Page 184 -- - LIQ 8 Charger FBC-6B4 programmable transmitter allows fine-tuning flight controls need modify mechanical linkages feature saved least 20 hours trialand-error testing also like built-in timer can used monitor long radio has discharging servos tight thus eliminating control drift need constantly change trim MODEL CONSTRUCTION SEQUENCE basic steps build model follows 1 Build skin horizontal vertical stabilizers elevator rudder 2 Build fuselage including console turtledeck top Build engine/nosewbeel mount 3 Make landing gear parts steel spar caps 4 Build center wing section 5 Build outer wing sectionsleave top spar cap loose 6 Assemble wing sections adjust dihedral 7 Make install flaps ailerons 8 Fit wing horizontal vertical stabilizers fuselage 9 Install engine muffler nose gear 10 Install aileron servos make hatches 11 Skin fuselage interior Make install turtledeck front fuselage top May1993 59 L Steel weights hold bottom fuselage side skin placeTwo 6-32 bolts two 2-56 bolts attach removable until UFO Thick sets up Fuselage longerons used keyempennage fuselage control surfaces use music wire alignment surfaceshinge pins easy assembly/disassembly bulkhead stiffens center section Futaba S148 servo mounted canopy frame has temporary cross fuselage Empennage control rods wing section actuate ailerons Most braces added until Plexiglas canopy cables run through center console wing ribs 18 Lite Ply glued screwed place I1__ __I eJKL F V K ~~o V r 1 K JK C- IF 7 3 F F MATE1AS 4_ EM E empennage fairing 12 Make fit cowl canopy 13 Skin remaining parts model 14 Install rest radio components balance model 15 Paint accessories add trim EMPENNAGE substructure empennage made balsa Lite Ply assembly can done using variety accepted tech niques chose drill holes through ribs use music wire rods alignment Although elevator has separate trim tab model does need normal RC flying empennage assembly attached fuselage two 6-32 bolts two 2-56 bolts can removed storage maintenance tips rudder elevator have lead added balance control surfaces covered white Super MonoKote glued control surfaces IJFO FUSELAGE fuselage built upside down plans top cowling turtledeck added later Overall alignment critical 60 Model Aviation ofoam glued cowl frame sanded shape cowl assembly removed fuselage fibergiassed six-ounce cloth Hobbypoxy Formula 2 lsa frame used locate cowl engine OPS 30 Maxi runs very coola streamlined cowl could have added around cylinder head order determine best skinning process started making empennage messed up skinning replacement vertical horizontal stabilizer substruc ture would traumatic wing substructure replacement OPS 30 Maxi excellent choice power Snipe pulls model Toothpick pins added elevator hinges due location beneath through maneuver effort models skin Trim tab prototype necessary normal flying uI 4\ w -J IV\ -\ May1993 61 producing good-flying aircraft have found several tools invaluable es tablishing alignment follows 1 Steel squaring blocks least three required 2 12-in combination square/level 3 6-in machinists scale 4 72-in straightedge/scale 5 16-in x 24-in carpenters square 6 Incidence meter 7 Wing horizontal stabilizer airfoil tem plates 1/s-in plywood coated UFO Thin 8 Flat work table 2 ft x 5 ft minimum 9 0-clamps 10 T-pins 11 Masking tape 12 Alignment/building fixtures gauges Explaining use tools could consume enough pages 62 Model Aviation * Vertical stabilizer rudder built simple fixture holds wing place Root ribs stiffened 1/16-in balsa directly over plans Rudder post during skinning operation skin sheeting Spar caps 025 4130N steel features full-length music wire pin gives wing much its rigidity laminated between 1/ie ply 1/i6 balsa wing skin attached leading edge contact Completed skin looks beautiful fixture eliminates wing twist cement prevent cracking over period time UFO adheres skin misalignment Wings have degree washout skin balance structure built Continued page 123 original torsion bar nosewheel Without skin Snipes structure very flimsy just like its full-scale allowed nose dip too much high brothers text contains complete skinning instructions grass fields plans show fixed gear 24 N NIPE Snipe/Gilgenbach Continued page 62 separate article will detail use However several rules thumb should followed concerning alignment First never check alignment dimension once Check over several times preferably several different ways Second dont get engrossed details forget basics example making two left wings Third eyeball alignments look wrong probably Fourth add temporary braces structures flimsy until structures covered skinned fuselage main structure alignments set top longerons should used starting point alignments Wing dihedral incidence well horizontal stabilizer incidence parallelism should set reference longerons LANDING GEAR debated whether present details scale landing gear article drawings full-scale gear will use torsion bars hydraulic shock absorbers intent minimize weight full-scale gear yet still provide good shockabsorbing qualities different approaches can taken meet criteria want learn book Landing Gear Design Light Aircraft L Pazmany excellent source concluded gear far too complex anyone just wants goodflying less-than-exact-scale model took several hundred hours design machine parts milling/drilling machine metal lathe went through exercise because needed develop knowledge build fullscale aircraft gear recommend model referred Wittman-type gear because Steve Wittman originally developed full-scale aircraft aircraft use expensive high-alloy steel gear legs Continued page 126 May1993 123 original landing gear somewhat complex intended simulate full-scale gear much-simplified Wittman-type gear design made 1/4-inch-diameter music wire shown plans swivel joint machined allow prototypes wings fold Wing pins #6 tapered complex feature shown plansremovable panels have substituted OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLAYBOY SR KIT 112A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $330 STOCK ORDERS SHIPPED WITHIN 24 HRS W Composites fiberglass experts video shows descnbes easy use composites construct basic lamination 1993 catalog included $5-off coupon towards first order Approximately 60 minutes Only $2495 plus $450 shipping handlingi Z e Glast Developments Corporalion 800 821-3283 SnipelGilgenbach Continued page 123 modelers have material available strong yet less expensive music wire truly amazing steel Most model aircraft use gear type because simple durable WING models wing made simulate folding feature full-scale aircraft practical standpoint however normal model would need removable wing panels what Ive shown plans prototype model used #6 tapered pins hold wing sections together feature required some difficult machining plans show hex-head cap screw nylon-insert locknut unusual feature wing design use 025-in-thick x 75-inwide 4130N steel wing spar caps wing designed handle 9OG 45G ultimate loadsthe loads structural failure occurs full-scale aircraft would exceed loads 6OG 3OG under normal aerobatic conditions model haphazard flying tech niques possible attain much higher loads Therefore prudence must exercised flying model Wing construction simplified through use wing fixture notched front rear spar webs building sequence follows 1 Make wing fixture using miscellaneous pieces lumber have around workshop Make spars ribs 2 Cut 14 steel spar caps six long eight short length radius ends drill mounting lightening holes deburr sand 3 Cut out A6 x 3/4 plywood Aa x 3/4 balsa spar caps glue steel caps outer wing panels using UFO Thick 4 Cut out notch plywood spar webs Make sure webs fit snugly wing fixture 5 Using UFO Thick glue boltom outer front wing spar caps wing webs 6 Clamp outer wing panel front spar assemblies fixture position rear spar web ribs fixture 7 Align ribs glue spar webs Note glue top front spar cap yet 8 Glue leading edge front ribs 9 Glue rear plywood spar caps ribs rear spar web remove assembly fixture 10 Screw bottom outer main spar caps wing web block 11 Repeat operations 6 through 10 other outer wing panel 12 Glue 1/16 x 3/4 plywood balsa spar caps center wing steel spar cap 13 Glue plywood front spar web center bottom front spar cap assembly 14 Clamp assembly fixture position rear spar web ribs fixture 15 Align ribs vertically using square glue spar webs glue two end ribs lime 16 Glue top front spar cap ribs spar web 17 Glue leading edge two rear plywood spar caps ribs rear spar web Remove assembly fixture 18 Screw spar caps wing web block 19 Glue four wing-locating dowels place outer wing panels 20 Assemble outer wing panels center wing panel adjust dihedral angles sliding top wing spar caps outer panels 21 Clamp two end ribs center wing section two end ribs outer wing sections 020-in-thick shims between ribs shims thickness two pieces 010 ABS plastic 22 Glue top outer wing spar caps center section outer ribs place 23 Screw top outer wing spar caps wing web blocks 24 Shape sand leading edges three wing panels match ailerons flaps can built over plans flat surface intercon necting flap swivel tubes should aligned glued swivel joint installed flap sections aligned wing retracted position Note control surfaces use music wire through hinges easy assembly disassembly models wing tips made balsa plywood bolted outer wing rib two 6-32 socket-head cap screws could also glued place intend try several different wing tip types deter give best stall characteristics CANOPY canopy made heating stretch ing 040-in Plexiglas over plug follows 1 Make plug wood coat epoxy 2 Sand epoxy smooth texture surface will transfer directly inside canopy formed 3 Attach handles two sides Plexi glas sheet 4 Heat sheet plug oven until Plexiglas starts sag 5 Remove both oven stretch Plexiglas over plug repeated process several times get final shape 6 Make canopy frame 7 Trim attach canopy frame using UFO #1 flat-head wood screws COWL AND WHEEL PANTS Make cowl following sequence 1 Cut out plywood cowl framework 126 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPS! PROMPT SHIPMENT ON VISAdMC SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 2 Glue framework several Styrofoam blocks 3 Cut sand Styrofoam shape 4 Cover assembly layer six-oz fiberglass cloth used Hobbypoxy Formula 2 bond fill cloth 5 After epoxy hardwait least daytrim off excess fiberglass sand rough edges high points apply heavy coat Hobbypoxy mixed 50/50 microballoons 6 Wait least day rough sand outer surface shape 7 Split cowl hollow out Styro foam leave 3A-in-thick Styrofoam wall inside half 8 Sand Styrofoam wail smooth apply layer six-oz fiberglass inside half 9 Wait another day trim sand excess fiberglass Add hinges holddown latches hinges T-pins 10 Reassemble two halves finish sanding cowl halves exceptionally rigid assure good fit attached cowl fuselage matchsanded Remember compensate 0l0-in-thick ABS fuselage skin wheel pants can made forming Styrofoam plug covering two layers six-oz fiberglass coating fiberglass 50/50 epoxy/microballoon mix sanding shape hollowing out Styrofoam SKINNING PAINT AND TRIM Sand contour stabilizer smooth Remove dust loose particles Cut out 010-in ABS plastic skin slighfly larger area covered Cut skin wrap around leading edge allow enough stock overlap leading edge control surface stabilizers trailing edge Place skin onto hot approximately lOOT flat surface tape down end used wifes glass-topped dining room table space heater underside glass necessary skin will tight normal room temperature Run bead UFO Thick trailing edge ribs up leading edge top side horizontal stabilizer Start ing top gives better chance spot misalignment skin best part skinning job visible can start either side vertical stabilizer Press trailing edge onto skin leaving h-in overhang Roll stabilizer skin toward leading edge pulling stabilizer toward yourself keep skin taut Remember taped opposite edge glass table Hold pressure assembly about minute UFO sets Remove assembly table apply UFO Thick leading edge top front bottom Tape skin table again roll skin around leading edge making sure skin tight Hold pressure assembly about minute Remove assembly table skin should now glued tightly around leading edge Now apply UFO Thick ribs trailing edge remaining side Tape edge skin table roll stabilizer onto skin Hold pressure assembly about minute Remove structure table trim edges sharp knife sanding block structure cools should stiff tight skin exposed rib sides can covered ABS plastic paint commercially available heat-shrinkable plastic covering may used skin folded trailing edges elevator rudder yields goodlooking straight trailing edges Folding ABS plastic can present problem however following technique should used 1 Build sand control surface Remove loose particles 2 Cut ABS skin slightly larger required 3 Lay thin 025-in steel straightedge onto skin fold line weight clamp down end 4 hard pencil draw trailing edge fold line Push down hard pencil plastic scored scratched 5 Fold skin over straightedge creating 1800 bend 6 Remove straightedge fold skin flat fold line should now straight 7 Tape top side skin heated glass table 8 Apply UFO Thick top side control surface substructure 9 Position substructure onto skin Press roll attach skin Hold pressure assembly about minute 10 Remove assembly table apply UFO Thick opposite side substructure 11 Repeat operation 9 opposite side 12 Trim off excess skin rudder rolled skin halfway around leading edge side elevator covered leading edge separately wing panels subsequently skinned using same procedure horizontal stabilizer ailerons flaps skinned using same procedure elevator fuselage sides skinned first turtledeck finally bottom using basically same techniquesplacing skin warm worktable applying UFO Thick structure pressing rolling structure skin Through trial error Ive learned several interesting things working 010 ABS plastic accidentally spill epoxy plastic denatured alcohol will remove epoxy damaging plastic Once P-40 WARHA WK Made USA SPECIFICATIONS WINGSPAN 60 ENGINE SUE60 2-EEROKE WEIGIfT7-8 LBS IIV7RO PRiCE$16000 ALL KITS FEATURE BAND LAID FIBERGLASS FUSEIAGEPANEL UNES SCALE DETAILSFOAM CORE WINGS MACHINE CITE FORMERS & BULKHEADS SEE YOUR LOCAL DEALER OR CALL HOBBY IL4NGAR 606-2&3-5 746 FOR IMMEDIATE DEUVERY DE4LER INQUIRIES WELCOME WEACCEPT VISA MASTERCARD & DISCOVER CARDS WEGLADLYSHIP COD SHIPPING 114 NDUNG $309 PER KIT CONTINENTAL USA OilIER AREAS CALL KE VCKY RESIDENIS ADD 6% SALES TAX HOBBY HANGAR ISA FULL SERVICE HOBBY SHOP WITH OVER 11000 ITEMS IN STOCI CATALOGS VAILABLE $400 EACH WIREBATE ON FIRST ORDER SPECIITE PIANEHELICOPTER OR CAR HANGAR EXaUCSIVEDISTRWTCW FIBER SCALE MODELS 153 LLOYD AVE R2VDW KY 41042 606-283-5746 IYW 606-2853889 FAX May1993 127 FOCKE WULF 190 Made USA SPECIFICATIONS WINGSPAN 65 ENGINE SIZE6090 2-SISOKE 90-120 4-SEROKE WEIGIIr9-10 LBS IPTERO PRICE SPECIFICATIONS WINGSPAN 60 ENGINE SIZE WEIGhT 60 2-SIROKE 8-ES LBS CESSNA 150Made USA SPEClFICATIONS WINGSPAN 65 ENGINE SUE WEIGHT 45-60 2-SEROKE 7-75 LBS QUALIT WTEGITY SRV1CE QJLALTr INTEGUTY SiR VICE QJJALIrY INTEGRITY SERVICE 5~ tJ uJ GRTYSER VICE 3950-AValIeyBIvd WALNUT CA 91789 Li w A T PE RR 0 0 F ci C S T FA R N ED EI N G U 01 O0 0 IIEAm OOD Jo C PLME 0' U SHADE 51g-i5 ni CALL OR WRITE FOR FREE BROCHURE Pitts-Style Mufflers UNIVERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2185 SI-SI IT-GOP $2385 MOKI 61 JT-MK61P 52595 UNIVERSAL 9OlT ON Side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts supplied muffler JT-40P8 29-45 $2285 JT-A91PASP 1002995 JT-F74PFOX 742995 JT-M100PMAXOl-lOS2995 JT-BGXPMAX BGXI3495 JT-5T69PST 61-75-902995 JT-ST25PST 25-30002995 JT-MK150PMOKI 153495 JT JT-W12OPWEBRA 1202995 5161 ZJTECI MAIL ORDER se add $255 UPS shippIng Check MO Visa MC COO accepted Add $400 extra COD California residents add 8% sales tax 255 Eat Alillorld/FO 8xx727/Sodo Springs dubs 82276 ULTIMATESPORT RC UlTIMATE 5-305 Mlii12085473742F F,nh5ed 5555 epoxy sets will have lot trouble removing may have sand off Removing UFO ABS plastic tricky Put small amount Zap Z-7 Debonder onto clean rag lightly wipe over UFO rub too hard too long Z-7 will cut plastic dull surface Z-7 can bring back shine Turtle Wax white automotive polishing compound Sooner later will scratch ABS skin occurs scratches can removed sanding 1200-grit wet-ordry sandpaper rubbing polishing compound sanding rubbing skin dont push too hard skin may crack attached structure plastic can shrunk using heat gun also very easy melt will shrink enough force warp substructure dont recommend heatshrinking minimize wrinlding sunlight plastic should preheated before installation K&B thinner cuts ABS plastic K&B epoxy sticks well especially thinned Conversely dont use K&B thinner cleanupuse denatured alcohol miscellaneous parts painted K&B primer K&B Super Poxy parts made plywood balsa spruce steel aluminum brass epoxy fiberglass resin ABS plastic Ive never found paint sands holds up better K&B worked equally well over materials order save weight time chose paint entire aircraft However did sand polish skin blemishes scratches used Jumbo Stripe Kit Eagle Products trim model decals easy install durable look good Eagle Products offers several different color schemes can individualize aircraft Personally like fluorescent pink/blue/purple combination TESTINGAT HOME Before taking new model flying field several things should always done First check center gravity CG should between 23% 27% wing chord first few flights flown CG 28% would recommend adding weight nose necessary get CG 25% wing chord engine should test run aircraft set up different attitudes eg nose up nose down inverted uprightto check run consistency radio equipment should actively cycled hour recharged cycled again hour test will also reveal control surface/linkage hang-ups radio must range-checked both engine running stopped Dont forget tie down plane Continued page 174 128 Model Aviation uSt extensions worm drive mounting strap Included MGLASS ALES INC W Fiberglass Headquarters * BUY DIRECT * Super Bond S mit Epony Epoxy Lsminxting Resins Cyanoacrylate Adhesives Glones ective Hand Creams Masits ns Polyester Resin al SprayerLaminating Bnsshes ers Acetate Fiberglass Fiilers Tongue Depressom Mioing Paddles sive Discs Sandpaper Foam Brushes Fine-Weave Median Heaxy Weight cloth ar on Fibers TECHNICAL INFORMATION Kenlar Tap. snarbon fib, tap. CALITOLL FREE earbon tiber tand available IMI WI ors ul 1-800-589-4444 18621 8 Nne MileRoad EastpointuMichigsn48O2l 313 777-2032Fax 313 7770350 Foao Flnis 5da, AI~ Lon4g Osar clerr Conopy Aailabl e,iIde KjI S255~ shasred Kr S5u5~Olna Sheered KI SUSS Over 70 Kits Fox Engines best prices FREE CATALOG DoCs Generix Controline P0 BOX 111 Jasonville IN 47438 Tel 812-665-3723 WORLDS LARGEST SCALE PLANS & DOCUMENTATN SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS ze 120 PAGE CATALOG 55 00 USA & CANADA StOQO AIR OVERSEAS Jim Pepmnos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE NSBORO NC 27403 292-5239 WORLDSMOSPAOTNEMTI MOD PLANSALL PATTERNS INCLUDED SCALEOFPL&NS*-DSFOPOP OP RSABBBEVIATED NAME 1/SASZ 1/L6SZ 1/B SE 1/6 SZ 1/4SZ 37 OeHov Cootec Rone 22320 324332 66344 132068 40 Vooght Cone P45 20320 30326 60345 15 Con JN4S Jenny 21318 32324 65$38 86 352 27 Llodbeoge 80211 15314 34 324 69334 91348 29 Wano TaperWing I5314 22 $20 45334 6034850362 36 Weatlod Lynanden 25319 37 324 75338 OA 2 35 Soog 046A Obon 23324 34332 68346 29 Boeing 100 Spont 15316 224324 453361603 nin Tninoton 30330 43338 90 6212037 39 LoOk Licknog P 39 Gee P38AFlghEn 184315 28 20 56334 I 2 25 VgE CoeD 0281/4 08320 27 28 38 Con CoElna PBY5o 52 48 78 60S04I~1A 19 Coctien NC4 624366 94089 17 Fekken 57 Ftc 14312 21316 8 o4349 31 Baylen GeeBee 114312 17314 35332T4344 75356 13 Sepenolanlon 068 15310 44432616038 8952 36 GroIn GolOhank 144314 214388 43$38 SCALE PLAN 35 Look Electra #11 27325 60332 55338 Look Slow 34 43 GroIn nengen TRE 30328 40 338 803 2 Fond 3M 4AT6 42 Roe B17G FlyFoct 51345 77 35 Roe 8170 36 38 NA MItohell 825 364337 55352 NA 525 36 34 MnoolCato088C72 154315 23322 454335 MeG N 826 6 37 Con Navy 003C1 19318 284324 57336 lEOn Tnt 4 25 CRaoen R3C-1 &2 11 315 164320 3 3 Nod1yPo e 6 34 Doog Tonoep SC3 47340 71 350oo 6 33 ConE Hawk P6E 154315 234322 47 4 32 Doolittle GB#11 124317 184322 37e335 49 46 74338 31 Bee P48344 P12B 15316 224320 444332 394 44 B9358 32 Spefld BollDog 134316 20320 40e332 53580358 32 Howard Ske&SBlke 104312 154315 31326 62345 34 Tocoeca 800cc 13312 194316 39 328 5- 340 78352 35 Now Molligan 16 315 234320 47332 64 44 94 56 33 Boa P26A Low Hog 14315 21 320 42332 63 45 84 58 35 Stlneen TSI SR7 204316 314325 42 58 Mooqolte Book 374324 41335 B1350408e365 37 Steceseen PTi16 318 244322 49 39 43 N Bik Widow P61 33340 494350 99 75 30 TAOES Nwke Ten13 144383 214318 43 36 86 42 CHelldive 5B2C4 25325 374335 26 Fond Teimote 4AT 38338 57 348 31 Ballano AlE Ron 32 322 48 330 96 52 33 Gnome J2F look194S28 29 340 58355 N 36N 27 CSeakawk F7C1 154318 234324 47338 6J35Q94e 83 28 SIk AopkLk S38 36$34 543424082B042U 16 8Pge 0-400 Rosob 55345 75956 31 Liedys LSinloe 21316 314322 B 336 31 Howard BaoPete 10312 15315 30330 0342 31 C Spackuk F9C2 124315 19322 38332 5543 8176358 33 Aceonca 13 Opt 18310 27314 534326 48 38 Toenone peeco Op 124316 184320 37336 rIght Ellen204318 304324 604838 5 AD BEPOBE ORDERING* 3/6 SCALE 1732 NILEI MT EESAIM 08088315 00PLANS AVAILABLE AT ONI 80 SURE TO ASS THE 120U GOLLAIT UNOER1I24 SIZE AL 1O7 FOR PACKAGINGIi IESFORA1L DESIGN POSTAGE ANS INOOSANCE ABOUT THOUSAND ADGITI4 PLINS MANY SIZES 75 CATALOG 3200 58 SS LIST ALONE 31. 55 AIR FOBEIGS 33 eveana e uppy 0 Edeerd 0 PeckedOnIaIiolS Nest FrIondSleoS IRIS".eP"P" 9800B BETNOI ANEN EEl LIONS 810 4 552O 5000 Snipe/Gilgenbach Continued page 128 aircraft should taxied familiarize yourself its groundhandling characteristics After running engine cycling radio taxiing check linkage connec tors nuts bolts tightness find loose components dont just retighten determine loosened take corrective action such gluing using Loctite PREFLIGHT Once became familiar operating characteristics aircraft confident everything functioning properly ready take long lonely drive flying field new model recommend following Dont go flying field day will crowded Dont take lot friends Arrange have just two helpersan experienced model builderlpilot good camcorder operator Videotape entire flying session includ aig preflight weather adverse cancel wait another day Conduct preflight inspection Check linkages connectors inspect control surfaces direction travel amount throw run engine different attitudes range-check radio FLIGHT PLAN developed flight plan would know exactly what intended would have contingencies something went wrong flight plan steps 1 Take off northwest wind flying field went has approximately 1/ mile grass direction engine died takeoff could land wind attempting tarn 2 At approximately 200 feet altitude 200 yards distance perform 180 right-hand turn 3 Climb 300 feet fly 400 yards southeast 4 Perform left-hand procedure turn 5 Fly 400 yards northwest trim controls perform right-hand procedure turn 6 Fly 400 yards southeast 7 Repeat steps 4 through 6 several times trying both high low rates elevator ailerons verbally noting control response helper video camera 8 Test flight characteristics aircraft flaps down 9 Enter right-hand landing pattern land aircraft flaps down possible After first flight inspected linkages nuts bolts connectorsnothing fallen off prototype proved quite stable too responsive controls low rate interesting activating flaps produced no pitching tendency 25 flaps engine idle landing relatively slow considering fueled aircraft weighed 25 pounds second flight explored aircrafts aerobatic characteristics surprise performed very much like pattern ship landing flaps disastrous however model caught wing tip damaging left wing nose gear After second flight checked model cleaned folded wings packed up went home review videotape video recording proved invaluable project guess thats have flight recorders airliners video showed second landing flared too soon too much causing right wing drop slighfly overcorrected models left wing hit ground After further analysis causes obvious still too much elevator aileron throw CG 28% flying skills rusty subsequent days checked out stall spin characteristics different weights CG locations TEST RESULTS 1 model flies well CG 25% 2 drooped wing tips stall DC Flight Training Beginner advanced tailored individual long-time modeler full size airplane flight instruc tor will make progress fun easy during week stay beautiful far western North Carolina Write call information RC Flight Training Rm 1704 38949GB 174 Model Aviation scale kits engines accessories want &you want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HES 1387 N Military Trail West Palm Beach FL 3340 407-68841669 HOBBY SUPER IUKL straight no tendency snap roll drop wing tip 3 slow ground speeds difficult turn model steerable nose wheel individual main gear brakes 4 ABS skin does vibrate excessively regardless engine rpm 5 Theoretically model should fly well 34 pounds hut have yet test theory 6 Elevator trim changes required flaps activated 7 Landings docile 200 400 flaps Forty degrees flap quickly slows plane greatly increases rate descent 8 No control flutter encountered 9 aircraft will spin CG less 20% full control travel CONCLUSIONS project would have successful help encouragement individuals organizations strongly recommend modelers patronize manufacturers distributors mentioned article Further wish thank flight assistantsGus Rebensburg Jerry Reichow Duncan Stewartfor time effort Based test results am now con fident feasible develop full-scale Snipe As am detail-designing big Snipe will continue use -scale model test different features building techniques cant wait get started bending tin summer 1998 Ill let know full-scale aircraft flies leads final question build full-scale model prototype -scale aircraft can enter sanctioned AMA scale contest lope SoaringlByors Continued page 106 required servo fact typical microservo will extend retract landing gear well open landing gear doors Gene has also designed over-center system retractable landing gear landing no force transmitted servo might strip servos gears over-center system also works retracted mode wheels inertia cannot throw gear out open ruggedness retract system surprising Gene has tested gear design doing push-ups install gear builder custom-fits fuselage between two bulkheads installation method serves two purposes First bulkhead mounting provides very rugged attachment inside fuselage gear cannot broken loose landing impact mounting system lets builder adjust depth wheel extension through fuselage Now meticulous scale builder want best retractable gear money can buy Cope retract probably worth considering Gene offers retract two sizes has -scale version currenfly priced $125 Cope also offers supersize -scale retract will handle really big birds tells sometime not-too-distant future will offering -scale model too Cope Retracts can contacted 32031/2 Main St Union Gap WA 98903 telephone number 509 457-9017 modelers friends contacted during month Mr Darrel Johnson Mesa Arizona suggested discuss balance models Well perfectly honest sometimes just mount model atop left right index fingers quick dirty Other times ever procedure bit exacting use balance stand balance stand simple device can built just few minutes aid good old Hot Stuff similar product stand built -inch plywood other plywood approximately size drawing outlines construction shows supporting fillets keep stand breaking large load applied drawing also details round edge stand upon model placed reason use stand quite obvious want obtain balance point model accurately possible stand much easier Using fingers balance model turns procedure somewhat juggling act However can place model stand make weight VIDEO_____ JOY OF FLYING FREE very informative 42 minute VHS video displaying phenomena free flight its variations great PR video can used effectively educate uninitiated art model aviation video professionally produced National Free Flight Society features both indoor outdoor activity available NIFFS 1655 Revere Drive Brookfield WI 53045 * Include Check $2500 plus $300 P&H per tape Buy 4 VgPEOS FREE #17 92 SCALEMASTER CHAMPS STAR MUS PIMA AIR MUS ALABAMA 2 Hrn.$1995 #16 AIRCRAFT GUNTERSYILLE AL AVAL AIR MUS PENSACOLA FL 2 Hn.51996 #1 592 WORLD SCALE CHAMPSAMA INVTL SHOOTOUT W INTL SCALEMASTERS 2 Hn.$1995 #1492 NW SEAPLANE CHAMPS EN SCALE AVIATION IN AUSTRALIA2 Hm.$1995 3 op Gun Invitari oledo Model topo s Air Museum2 Nra. 51996 #12- 91 Scalemasters tao Vegas 91 DSAA Las Vegas 91 NWlntl2 Hre.$1916 C #11 Scalemaster Aircraft Preview Mfg Visdw1tlan Parsons- 91 NWteaplanethamps 2 Kn.S1996 Z#1O 91 Tup Gun W Palm Bch Fl SsA Lao Vegas W Model topu2 Iin.$1996 90 Scalemasters Champs Irving TX hidbey 101 Scalemos5ers an Diego Aerospace Moo 2 Hra.51996 90 NW Intl Scalemasters Farragot Park-Athol ID m Champlin Fighter Museum w/tou Proctor W Seaplane ps Santa Monica Mos Flying 2 Mn. 51995 #7 op Gun Invitational Mesa AZ W Model Eupo2 Hrs.$1995 #6 89 Scalemasters Champs St Louis ake lianaso m Schneider Cop Races2 IIrs.$19gG 89 US NaIls Scale & Seaplanes 89 NW Seaplane Champs Planes Fame taut Moo Moo DshkoshVisit mw/Ralph Beck Chicago Mo Sci & Ind 2 Hs.$1995 #4 09 Top Gon Champo Coral Springs FL tor Albatroo DVA Preview atIs Seaplane Site NW ntl oScalemasters tor N-li Test Flight 2 Hre.S1I96 IA Special Edition Proctor Enterprises Atbatroo OVA Brief Conotr Engine Radio Irrntall& Teat Ftigbto 2 Hra $1996 Cuetias JN4D Jenny Plan FUN SCALE 109 inches 1804 sq 11 lbs 8 sheets w/instroctions 51996 10807 SE STACY CT PORTLAND OR 97266 PHONE 503653-25780 FAX 503 6781342 SEND STAMP FOR COMPLETE LIST PAL & SECAM ORDERS CONCEPTS 17 MILPERA CRESCENT WANTIRNA VIC 3152 AUSTRALIA e 03801-3899 03887-3472 BETA CARLSON ENGINE IMPORTS 814 East Marconi Phoenix AZ 85022-3112 IMPORTED DIESEL ENGINES Worlds Best Selection AE AM Aurora Cipolla D-C KMD MAP Mikro MK MWS Oliver PAW Pfeffer Silver Swallow USE Also Replica Mills MOVO Letmo diesels rare imported glow engines CO motor sets Ten page catalog 1 00 May1993 175
Edition: Model Aviation - 1993/05
Page Numbers: 56, 57, 59, 60, 61, 62, 123, 126, 127, 128, 174, 175
PART TWO LAST MONTH explained steps required design full-scale homebuilt aircraft also gave reasons believe -scale RC model design should built tested month design construction testing model will discussed MATERIAL AND HARDWARE SELECTION goal pick good quality readily available products would allow simulation assembly processes would use building full-scale aircraft model aircraft substructure chose use plywoodaircraft quality Lite Plyand balsa such critical areas wing spars landing gear wing folding joints used aluminum and/or 4130N steel depending strength requirements skinning aircraft used 0 10inch-thick ABS plastic should give good indication what will encounter skinning fullscale aircraft 016- 040-inch-thick aluminum sheet needed use adhesives could bond plywood balsa Styrofoam fiberglass steel aluminum ABS plastic Satellite City able meet requirements UFO Thin UFO Thick adhesives plus Hot Shot Kick-It accelerators instant bonding necessary UFO Thin worked well UFO Thick allows repositioning parts before adhesive sets especially important during skinning process feature appreciate about UFO doesnt give off irritating gas some CyA glues Du-Bro Products has complete line quality hardware items including scale wheels hinges control horns pushrods wheel collars blind nuts etc used Du-Bro hardware wherever possible pushrodl clevis assemblies coil spring locks used control surfaces ensure safe reliable connections ENGINE SELECTION different engine types sizes considered before made final selection objective ability swing 18 x 10 prop approximately 7000 rpm didnt want use gasoline fuel because its relatively dangerous handling characteristics considered methanol-burning engines several multicylinder engines could have done job initial cost prohibitive single-cylinder methanol-burning engines available OPS 30 Maxi Shamrock Competition Imports Inc offers best value Its powerful engine has good starting idling transition throttling characteristics Other appealing features muffler locations flexibility engines light weight converted leaf-blower engine specifically designed power model aircraft 15- 22pound range Although ringed engine manufacturer still recommends breaking about hour no problem meI always run engines quite familiarize myself ensure everything functioning properly before taking air 56 Model Aviation month previewed full-scale Snipe Now lets build model U James Gilgenbach selected Cool Power Tartan/Bully fuel specifically blended engine size type have excellent results Cool Power past application no exception Another benefit using Cool Power opposed factoryrecommended 5% castor oil 95% methanol added rust] corrosion protection wanted lightweight three-inch-diameter aluminum spinner would fit OPS 30 Maxi look good Tm-Turn TT-300B proved excellent selection modified TT-300B cutting slots fit 18 x 10 prop Tm-Turn has big scale spinner available doesnt require drilling backplate engine drive pins drilling tapping prop washer prop backplate two 6-32 bolts drilling tapping OPS 30 Maxi prop nut 10-32 spinner bolt modifications lock prop engine fashion similar used full-scale aircraft Both Zinger wood props Dynathrust composite props performed well props OPS 30 Maxi turned following rpm 18 x 6 18 x 8 18 x 10 18 x 8/14 20 x 8 Zinger 8100 rpm 7500 rpm 6800 rpm 6200 rpm 5800rpm 18 x 8 18 x 10 Dynathrust 7400 rpm 6700 rpm RADIO SELECTION Futaba 7UAP radio control system offers options required handle -scale Snipe options include following 1 Ailerons separate S148 servos aileron Y connector AEC 4 b Extensions AEC 11 2 Elevator 8134 -scale servo 3 Rudder S 134 -scale servo 4 Flaps S134 -scale servo 5 Throttle S148 servo 6 Elevator trim tab S148 servo 7 Airborne battery pack NR-4LB 1000 mAb Type 114-scaIe test model Wingspan 76 inches Recommended motor size type OPS 30 Maxi Number RC channels recommended Six Expected flying weight 25 pounds Type construction Built-up Type of covering finish recommended ABS plastic skin K&B Super Poxy May1993 57 crashcomponents shown prior assembly model can readily stripped down necessary shipping storage Models skin 010 ABS plastic ne cowl canopy hatch open just will fullscale aircraft allowing access instruments Full Size Plans AvailableSee Page 184 -- - LIQ 8 Charger FBC-6B4 programmable transmitter allows fine-tuning flight controls need modify mechanical linkages feature saved least 20 hours trialand-error testing also like built-in timer can used monitor long radio has discharging servos tight thus eliminating control drift need constantly change trim MODEL CONSTRUCTION SEQUENCE basic steps build model follows 1 Build skin horizontal vertical stabilizers elevator rudder 2 Build fuselage including console turtledeck top Build engine/nosewbeel mount 3 Make landing gear parts steel spar caps 4 Build center wing section 5 Build outer wing sectionsleave top spar cap loose 6 Assemble wing sections adjust dihedral 7 Make install flaps ailerons 8 Fit wing horizontal vertical stabilizers fuselage 9 Install engine muffler nose gear 10 Install aileron servos make hatches 11 Skin fuselage interior Make install turtledeck front fuselage top May1993 59 L Steel weights hold bottom fuselage side skin placeTwo 6-32 bolts two 2-56 bolts attach removable until UFO Thick sets up Fuselage longerons used keyempennage fuselage control surfaces use music wire alignment surfaceshinge pins easy assembly/disassembly bulkhead stiffens center section Futaba S148 servo mounted canopy frame has temporary cross fuselage Empennage control rods wing section actuate ailerons Most braces added until Plexiglas canopy cables run through center console wing ribs 18 Lite Ply glued screwed place I1__ __I eJKL F V K ~~o V r 1 K JK C- IF 7 3 F F MATE1AS 4_ EM E empennage fairing 12 Make fit cowl canopy 13 Skin remaining parts model 14 Install rest radio components balance model 15 Paint accessories add trim EMPENNAGE substructure empennage made balsa Lite Ply assembly can done using variety accepted tech niques chose drill holes through ribs use music wire rods alignment Although elevator has separate trim tab model does need normal RC flying empennage assembly attached fuselage two 6-32 bolts two 2-56 bolts can removed storage maintenance tips rudder elevator have lead added balance control surfaces covered white Super MonoKote glued control surfaces IJFO FUSELAGE fuselage built upside down plans top cowling turtledeck added later Overall alignment critical 60 Model Aviation ofoam glued cowl frame sanded shape cowl assembly removed fuselage fibergiassed six-ounce cloth Hobbypoxy Formula 2 lsa frame used locate cowl engine OPS 30 Maxi runs very coola streamlined cowl could have added around cylinder head order determine best skinning process started making empennage messed up skinning replacement vertical horizontal stabilizer substruc ture would traumatic wing substructure replacement OPS 30 Maxi excellent choice power Snipe pulls model Toothpick pins added elevator hinges due location beneath through maneuver effort models skin Trim tab prototype necessary normal flying uI 4\ w -J IV\ -\ May1993 61 producing good-flying aircraft have found several tools invaluable es tablishing alignment follows 1 Steel squaring blocks least three required 2 12-in combination square/level 3 6-in machinists scale 4 72-in straightedge/scale 5 16-in x 24-in carpenters square 6 Incidence meter 7 Wing horizontal stabilizer airfoil tem plates 1/s-in plywood coated UFO Thin 8 Flat work table 2 ft x 5 ft minimum 9 0-clamps 10 T-pins 11 Masking tape 12 Alignment/building fixtures gauges Explaining use tools could consume enough pages 62 Model Aviation * Vertical stabilizer rudder built simple fixture holds wing place Root ribs stiffened 1/16-in balsa directly over plans Rudder post during skinning operation skin sheeting Spar caps 025 4130N steel features full-length music wire pin gives wing much its rigidity laminated between 1/ie ply 1/i6 balsa wing skin attached leading edge contact Completed skin looks beautiful fixture eliminates wing twist cement prevent cracking over period time UFO adheres skin misalignment Wings have degree washout skin balance structure built Continued page 123 original torsion bar nosewheel Without skin Snipes structure very flimsy just like its full-scale allowed nose dip too much high brothers text contains complete skinning instructions grass fields plans show fixed gear 24 N NIPE Snipe/Gilgenbach Continued page 62 separate article will detail use However several rules thumb should followed concerning alignment First never check alignment dimension once Check over several times preferably several different ways Second dont get engrossed details forget basics example making two left wings Third eyeball alignments look wrong probably Fourth add temporary braces structures flimsy until structures covered skinned fuselage main structure alignments set top longerons should used starting point alignments Wing dihedral incidence well horizontal stabilizer incidence parallelism should set reference longerons LANDING GEAR debated whether present details scale landing gear article drawings full-scale gear will use torsion bars hydraulic shock absorbers intent minimize weight full-scale gear yet still provide good shockabsorbing qualities different approaches can taken meet criteria want learn book Landing Gear Design Light Aircraft L Pazmany excellent source concluded gear far too complex anyone just wants goodflying less-than-exact-scale model took several hundred hours design machine parts milling/drilling machine metal lathe went through exercise because needed develop knowledge build fullscale aircraft gear recommend model referred Wittman-type gear because Steve Wittman originally developed full-scale aircraft aircraft use expensive high-alloy steel gear legs Continued page 126 May1993 123 original landing gear somewhat complex intended simulate full-scale gear much-simplified Wittman-type gear design made 1/4-inch-diameter music wire shown plans swivel joint machined allow prototypes wings fold Wing pins #6 tapered complex feature shown plansremovable panels have substituted OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLAYBOY SR KIT 112A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $330 STOCK ORDERS SHIPPED WITHIN 24 HRS W Composites fiberglass experts video shows descnbes easy use composites construct basic lamination 1993 catalog included $5-off coupon towards first order Approximately 60 minutes Only $2495 plus $450 shipping handlingi Z e Glast Developments Corporalion 800 821-3283 SnipelGilgenbach Continued page 123 modelers have material available strong yet less expensive music wire truly amazing steel Most model aircraft use gear type because simple durable WING models wing made simulate folding feature full-scale aircraft practical standpoint however normal model would need removable wing panels what Ive shown plans prototype model used #6 tapered pins hold wing sections together feature required some difficult machining plans show hex-head cap screw nylon-insert locknut unusual feature wing design use 025-in-thick x 75-inwide 4130N steel wing spar caps wing designed handle 9OG 45G ultimate loadsthe loads structural failure occurs full-scale aircraft would exceed loads 6OG 3OG under normal aerobatic conditions model haphazard flying tech niques possible attain much higher loads Therefore prudence must exercised flying model Wing construction simplified through use wing fixture notched front rear spar webs building sequence follows 1 Make wing fixture using miscellaneous pieces lumber have around workshop Make spars ribs 2 Cut 14 steel spar caps six long eight short length radius ends drill mounting lightening holes deburr sand 3 Cut out A6 x 3/4 plywood Aa x 3/4 balsa spar caps glue steel caps outer wing panels using UFO Thick 4 Cut out notch plywood spar webs Make sure webs fit snugly wing fixture 5 Using UFO Thick glue boltom outer front wing spar caps wing webs 6 Clamp outer wing panel front spar assemblies fixture position rear spar web ribs fixture 7 Align ribs glue spar webs Note glue top front spar cap yet 8 Glue leading edge front ribs 9 Glue rear plywood spar caps ribs rear spar web remove assembly fixture 10 Screw bottom outer main spar caps wing web block 11 Repeat operations 6 through 10 other outer wing panel 12 Glue 1/16 x 3/4 plywood balsa spar caps center wing steel spar cap 13 Glue plywood front spar web center bottom front spar cap assembly 14 Clamp assembly fixture position rear spar web ribs fixture 15 Align ribs vertically using square glue spar webs glue two end ribs lime 16 Glue top front spar cap ribs spar web 17 Glue leading edge two rear plywood spar caps ribs rear spar web Remove assembly fixture 18 Screw spar caps wing web block 19 Glue four wing-locating dowels place outer wing panels 20 Assemble outer wing panels center wing panel adjust dihedral angles sliding top wing spar caps outer panels 21 Clamp two end ribs center wing section two end ribs outer wing sections 020-in-thick shims between ribs shims thickness two pieces 010 ABS plastic 22 Glue top outer wing spar caps center section outer ribs place 23 Screw top outer wing spar caps wing web blocks 24 Shape sand leading edges three wing panels match ailerons flaps can built over plans flat surface intercon necting flap swivel tubes should aligned glued swivel joint installed flap sections aligned wing retracted position Note control surfaces use music wire through hinges easy assembly disassembly models wing tips made balsa plywood bolted outer wing rib two 6-32 socket-head cap screws could also glued place intend try several different wing tip types deter give best stall characteristics CANOPY canopy made heating stretch ing 040-in Plexiglas over plug follows 1 Make plug wood coat epoxy 2 Sand epoxy smooth texture surface will transfer directly inside canopy formed 3 Attach handles two sides Plexi glas sheet 4 Heat sheet plug oven until Plexiglas starts sag 5 Remove both oven stretch Plexiglas over plug repeated process several times get final shape 6 Make canopy frame 7 Trim attach canopy frame using UFO #1 flat-head wood screws COWL AND WHEEL PANTS Make cowl following sequence 1 Cut out plywood cowl framework 126 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPS! PROMPT SHIPMENT ON VISAdMC SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 2 Glue framework several Styrofoam blocks 3 Cut sand Styrofoam shape 4 Cover assembly layer six-oz fiberglass cloth used Hobbypoxy Formula 2 bond fill cloth 5 After epoxy hardwait least daytrim off excess fiberglass sand rough edges high points apply heavy coat Hobbypoxy mixed 50/50 microballoons 6 Wait least day rough sand outer surface shape 7 Split cowl hollow out Styro foam leave 3A-in-thick Styrofoam wall inside half 8 Sand Styrofoam wail smooth apply layer six-oz fiberglass inside half 9 Wait another day trim sand excess fiberglass Add hinges holddown latches hinges T-pins 10 Reassemble two halves finish sanding cowl halves exceptionally rigid assure good fit attached cowl fuselage matchsanded Remember compensate 0l0-in-thick ABS fuselage skin wheel pants can made forming Styrofoam plug covering two layers six-oz fiberglass coating fiberglass 50/50 epoxy/microballoon mix sanding shape hollowing out Styrofoam SKINNING PAINT AND TRIM Sand contour stabilizer smooth Remove dust loose particles Cut out 010-in ABS plastic skin slighfly larger area covered Cut skin wrap around leading edge allow enough stock overlap leading edge control surface stabilizers trailing edge Place skin onto hot approximately lOOT flat surface tape down end used wifes glass-topped dining room table space heater underside glass necessary skin will tight normal room temperature Run bead UFO Thick trailing edge ribs up leading edge top side horizontal stabilizer Start ing top gives better chance spot misalignment skin best part skinning job visible can start either side vertical stabilizer Press trailing edge onto skin leaving h-in overhang Roll stabilizer skin toward leading edge pulling stabilizer toward yourself keep skin taut Remember taped opposite edge glass table Hold pressure assembly about minute UFO sets Remove assembly table apply UFO Thick leading edge top front bottom Tape skin table again roll skin around leading edge making sure skin tight Hold pressure assembly about minute Remove assembly table skin should now glued tightly around leading edge Now apply UFO Thick ribs trailing edge remaining side Tape edge skin table roll stabilizer onto skin Hold pressure assembly about minute Remove structure table trim edges sharp knife sanding block structure cools should stiff tight skin exposed rib sides can covered ABS plastic paint commercially available heat-shrinkable plastic covering may used skin folded trailing edges elevator rudder yields goodlooking straight trailing edges Folding ABS plastic can present problem however following technique should used 1 Build sand control surface Remove loose particles 2 Cut ABS skin slightly larger required 3 Lay thin 025-in steel straightedge onto skin fold line weight clamp down end 4 hard pencil draw trailing edge fold line Push down hard pencil plastic scored scratched 5 Fold skin over straightedge creating 1800 bend 6 Remove straightedge fold skin flat fold line should now straight 7 Tape top side skin heated glass table 8 Apply UFO Thick top side control surface substructure 9 Position substructure onto skin Press roll attach skin Hold pressure assembly about minute 10 Remove assembly table apply UFO Thick opposite side substructure 11 Repeat operation 9 opposite side 12 Trim off excess skin rudder rolled skin halfway around leading edge side elevator covered leading edge separately wing panels subsequently skinned using same procedure horizontal stabilizer ailerons flaps skinned using same procedure elevator fuselage sides skinned first turtledeck finally bottom using basically same techniquesplacing skin warm worktable applying UFO Thick structure pressing rolling structure skin Through trial error Ive learned several interesting things working 010 ABS plastic accidentally spill epoxy plastic denatured alcohol will remove epoxy damaging plastic Once P-40 WARHA WK Made USA SPECIFICATIONS WINGSPAN 60 ENGINE SUE60 2-EEROKE WEIGIfT7-8 LBS IIV7RO PRiCE$16000 ALL KITS FEATURE BAND LAID FIBERGLASS FUSEIAGEPANEL UNES SCALE DETAILSFOAM CORE WINGS MACHINE CITE FORMERS & BULKHEADS SEE YOUR LOCAL DEALER OR CALL HOBBY IL4NGAR 606-2&3-5 746 FOR IMMEDIATE DEUVERY DE4LER INQUIRIES WELCOME WEACCEPT VISA MASTERCARD & DISCOVER CARDS WEGLADLYSHIP COD SHIPPING 114 NDUNG $309 PER KIT CONTINENTAL USA OilIER AREAS CALL KE VCKY RESIDENIS ADD 6% SALES TAX HOBBY HANGAR ISA FULL SERVICE HOBBY SHOP WITH OVER 11000 ITEMS IN STOCI CATALOGS VAILABLE $400 EACH WIREBATE ON FIRST ORDER SPECIITE PIANEHELICOPTER OR CAR HANGAR EXaUCSIVEDISTRWTCW FIBER SCALE MODELS 153 LLOYD AVE R2VDW KY 41042 606-283-5746 IYW 606-2853889 FAX May1993 127 FOCKE WULF 190 Made USA SPECIFICATIONS WINGSPAN 65 ENGINE SIZE6090 2-SISOKE 90-120 4-SEROKE WEIGIIr9-10 LBS IPTERO PRICE SPECIFICATIONS WINGSPAN 60 ENGINE SIZE WEIGhT 60 2-SIROKE 8-ES LBS CESSNA 150Made USA SPEClFICATIONS WINGSPAN 65 ENGINE SUE WEIGHT 45-60 2-SEROKE 7-75 LBS QUALIT WTEGITY SRV1CE QJLALTr INTEGUTY SiR VICE QJJALIrY INTEGRITY SERVICE 5~ tJ uJ GRTYSER VICE 3950-AValIeyBIvd WALNUT CA 91789 Li w A T PE RR 0 0 F ci C S T FA R N ED EI N G U 01 O0 0 IIEAm OOD Jo C PLME 0' U SHADE 51g-i5 ni CALL OR WRITE FOR FREE BROCHURE Pitts-Style Mufflers UNIVERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2185 SI-SI IT-GOP $2385 MOKI 61 JT-MK61P 52595 UNIVERSAL 9OlT ON Side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts supplied muffler JT-40P8 29-45 $2285 JT-A91PASP 1002995 JT-F74PFOX 742995 JT-M100PMAXOl-lOS2995 JT-BGXPMAX BGXI3495 JT-5T69PST 61-75-902995 JT-ST25PST 25-30002995 JT-MK150PMOKI 153495 JT JT-W12OPWEBRA 1202995 5161 ZJTECI MAIL ORDER se add $255 UPS shippIng Check MO Visa MC COO accepted Add $400 extra COD California residents add 8% sales tax 255 Eat Alillorld/FO 8xx727/Sodo Springs dubs 82276 ULTIMATESPORT RC UlTIMATE 5-305 Mlii12085473742F F,nh5ed 5555 epoxy sets will have lot trouble removing may have sand off Removing UFO ABS plastic tricky Put small amount Zap Z-7 Debonder onto clean rag lightly wipe over UFO rub too hard too long Z-7 will cut plastic dull surface Z-7 can bring back shine Turtle Wax white automotive polishing compound Sooner later will scratch ABS skin occurs scratches can removed sanding 1200-grit wet-ordry sandpaper rubbing polishing compound sanding rubbing skin dont push too hard skin may crack attached structure plastic can shrunk using heat gun also very easy melt will shrink enough force warp substructure dont recommend heatshrinking minimize wrinlding sunlight plastic should preheated before installation K&B thinner cuts ABS plastic K&B epoxy sticks well especially thinned Conversely dont use K&B thinner cleanupuse denatured alcohol miscellaneous parts painted K&B primer K&B Super Poxy parts made plywood balsa spruce steel aluminum brass epoxy fiberglass resin ABS plastic Ive never found paint sands holds up better K&B worked equally well over materials order save weight time chose paint entire aircraft However did sand polish skin blemishes scratches used Jumbo Stripe Kit Eagle Products trim model decals easy install durable look good Eagle Products offers several different color schemes can individualize aircraft Personally like fluorescent pink/blue/purple combination TESTINGAT HOME Before taking new model flying field several things should always done First check center gravity CG should between 23% 27% wing chord first few flights flown CG 28% would recommend adding weight nose necessary get CG 25% wing chord engine should test run aircraft set up different attitudes eg nose up nose down inverted uprightto check run consistency radio equipment should actively cycled hour recharged cycled again hour test will also reveal control surface/linkage hang-ups radio must range-checked both engine running stopped Dont forget tie down plane Continued page 174 128 Model Aviation uSt extensions worm drive mounting strap Included MGLASS ALES INC W Fiberglass Headquarters * BUY DIRECT * Super Bond S mit Epony Epoxy Lsminxting Resins Cyanoacrylate Adhesives Glones ective Hand Creams Masits ns Polyester Resin al SprayerLaminating Bnsshes ers Acetate Fiberglass Fiilers Tongue Depressom Mioing Paddles sive Discs Sandpaper Foam Brushes Fine-Weave Median Heaxy Weight cloth ar on Fibers TECHNICAL INFORMATION Kenlar Tap. snarbon fib, tap. CALITOLL FREE earbon tiber tand available IMI WI ors ul 1-800-589-4444 18621 8 Nne MileRoad EastpointuMichigsn48O2l 313 777-2032Fax 313 7770350 Foao Flnis 5da, AI~ Lon4g Osar clerr Conopy Aailabl e,iIde KjI S255~ shasred Kr S5u5~Olna Sheered KI SUSS Over 70 Kits Fox Engines best prices FREE CATALOG DoCs Generix Controline P0 BOX 111 Jasonville IN 47438 Tel 812-665-3723 WORLDS LARGEST SCALE PLANS & DOCUMENTATN SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS ze 120 PAGE CATALOG 55 00 USA & CANADA StOQO AIR OVERSEAS Jim Pepmnos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE NSBORO NC 27403 292-5239 WORLDSMOSPAOTNEMTI MOD PLANSALL PATTERNS INCLUDED SCALEOFPL&NS*-DSFOPOP OP RSABBBEVIATED NAME 1/SASZ 1/L6SZ 1/B SE 1/6 SZ 1/4SZ 37 OeHov Cootec Rone 22320 324332 66344 132068 40 Vooght Cone P45 20320 30326 60345 15 Con JN4S Jenny 21318 32324 65$38 86 352 27 Llodbeoge 80211 15314 34 324 69334 91348 29 Wano TaperWing I5314 22 $20 45334 6034850362 36 Weatlod Lynanden 25319 37 324 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AT ONI 80 SURE TO ASS THE 120U GOLLAIT UNOER1I24 SIZE AL 1O7 FOR PACKAGINGIi IESFORA1L DESIGN POSTAGE ANS INOOSANCE ABOUT THOUSAND ADGITI4 PLINS MANY SIZES 75 CATALOG 3200 58 SS LIST ALONE 31. 55 AIR FOBEIGS 33 eveana e uppy 0 Edeerd 0 PeckedOnIaIiolS Nest FrIondSleoS IRIS".eP"P" 9800B BETNOI ANEN EEl LIONS 810 4 552O 5000 Snipe/Gilgenbach Continued page 128 aircraft should taxied familiarize yourself its groundhandling characteristics After running engine cycling radio taxiing check linkage connec tors nuts bolts tightness find loose components dont just retighten determine loosened take corrective action such gluing using Loctite PREFLIGHT Once became familiar operating characteristics aircraft confident everything functioning properly ready take long lonely drive flying field new model recommend following Dont go flying field day will crowded Dont take lot friends Arrange have just two helpersan experienced model builderlpilot good camcorder operator Videotape entire flying session includ aig preflight weather adverse cancel wait another day Conduct preflight inspection Check linkages connectors inspect control surfaces direction travel amount throw run engine different attitudes range-check radio FLIGHT PLAN developed flight plan would know exactly what intended would have contingencies something went wrong flight plan steps 1 Take off northwest wind flying field went has approximately 1/ mile grass direction engine died takeoff could land wind attempting tarn 2 At approximately 200 feet altitude 200 yards distance perform 180 right-hand turn 3 Climb 300 feet fly 400 yards southeast 4 Perform left-hand procedure turn 5 Fly 400 yards northwest trim controls perform right-hand procedure turn 6 Fly 400 yards southeast 7 Repeat steps 4 through 6 several times trying both high low rates elevator ailerons verbally noting control response helper video camera 8 Test flight characteristics aircraft flaps down 9 Enter right-hand landing pattern land aircraft flaps down possible After first flight inspected linkages nuts bolts connectorsnothing fallen off prototype proved quite stable too responsive controls low rate interesting activating flaps produced no pitching tendency 25 flaps engine idle landing relatively slow considering fueled aircraft weighed 25 pounds second flight explored aircrafts aerobatic characteristics surprise performed very much like pattern ship landing flaps disastrous however model caught wing tip damaging left wing nose gear After second flight checked model cleaned folded wings packed up went home review videotape video recording proved invaluable project guess thats have flight recorders airliners video showed second landing flared too soon too much causing right wing drop slighfly overcorrected models left wing hit ground After further analysis causes obvious still too much elevator aileron throw CG 28% flying skills rusty subsequent days checked out stall spin characteristics different weights CG locations TEST RESULTS 1 model flies well CG 25% 2 drooped wing tips stall DC Flight Training Beginner advanced tailored individual long-time modeler full size airplane flight instruc tor will make progress fun easy during week stay beautiful far western North Carolina Write call information RC Flight Training Rm 1704 38949GB 174 Model Aviation scale kits engines accessories want &you want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stockJoe Manzella SHIPPED WITHIN 24 HES 1387 N Military Trail West Palm Beach FL 3340 407-68841669 HOBBY SUPER IUKL straight no tendency snap roll drop wing tip 3 slow ground speeds difficult turn model steerable nose wheel individual main gear brakes 4 ABS skin does vibrate excessively regardless engine rpm 5 Theoretically model should fly well 34 pounds hut have yet test theory 6 Elevator trim changes required flaps activated 7 Landings docile 200 400 flaps Forty degrees flap quickly slows plane greatly increases rate descent 8 No control flutter encountered 9 aircraft will spin CG less 20% full control travel CONCLUSIONS project would have successful help encouragement individuals organizations strongly recommend modelers patronize manufacturers distributors mentioned article Further wish thank flight assistantsGus Rebensburg Jerry Reichow Duncan Stewartfor time effort Based test results am now con fident feasible develop full-scale Snipe As am detail-designing big Snipe will continue use -scale model test different features building techniques cant wait get started bending tin summer 1998 Ill let know full-scale aircraft flies leads final question build full-scale model prototype -scale aircraft can enter sanctioned AMA scale contest lope SoaringlByors Continued page 106 required servo fact typical microservo will extend retract landing gear well open landing gear doors Gene has also designed over-center system retractable landing gear landing no force transmitted servo might strip servos gears over-center system also works retracted mode wheels inertia cannot throw gear out open ruggedness retract system surprising Gene has tested gear design doing push-ups install gear builder custom-fits fuselage between two bulkheads installation method serves two purposes First bulkhead mounting provides very rugged attachment inside fuselage gear cannot broken loose landing impact mounting system lets builder adjust depth wheel extension through fuselage Now meticulous scale builder want best retractable gear money can buy Cope retract probably worth considering Gene offers retract two sizes has -scale version currenfly priced $125 Cope also offers supersize -scale retract will handle really big birds tells sometime not-too-distant future will offering -scale model too Cope Retracts can contacted 32031/2 Main St Union Gap WA 98903 telephone number 509 457-9017 modelers friends contacted during month Mr Darrel Johnson Mesa Arizona suggested discuss balance models Well perfectly honest sometimes just mount model atop left right index fingers quick dirty Other times ever procedure bit exacting use balance stand balance stand simple device can built just few minutes aid good old Hot Stuff similar product stand built -inch plywood other plywood approximately size drawing outlines construction shows supporting fillets keep stand breaking large load applied drawing also details round edge stand upon model placed reason use stand quite obvious want obtain balance point model accurately possible stand much easier Using fingers balance model turns procedure somewhat juggling act However can place model stand make weight VIDEO_____ JOY OF FLYING FREE very informative 42 minute VHS video displaying phenomena free flight its variations great PR video can used effectively educate uninitiated art model aviation video professionally produced National Free Flight Society features both indoor outdoor activity available NIFFS 1655 Revere Drive Brookfield WI 53045 * Include Check $2500 plus $300 P&H per tape 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