George H ciapp NO OCR TEXT Can tell lathe short wing long wing views short wing right has slightly lower aspect ratioand has 25 engine vs 40 long-wing version main difference flight isthatthe long wing rolls slowly Note rubberbandsfor holding wing Author says can prevent much damage mishap compared rigid nylon bolt hold-down method Rounded wing tips aerodynamically clean Wheels angled ward slightly improved ground handling photos author shelved until sometime later 1979 club am Syracuse Thunder bird Aero Radio Society began season Sport Pylon Racing used 1936 Old-Timer design Torc published trainer Model Builder 19781 entered Novice get some experience rounding pylons third race came up Torc under repair airplane piece outgrowth Champ kit knew what wrong reasoned Friezetype ailerons solved same problem real aircraft during late 1920s would try something like leading edge Friezetype aileron projects below wing up position produce needed drag offset other down aileron wasnt time rebuild wing Frieze-type ailerons decided would modify existing ailerons equalize lateral drag did installing small inverted airfoils below aileron gap allow aifflow go between aileron went up leading edge small airfoil came down farther slipstream equalize aileron drag See July 1980 MA Letters Editor sketch system time test Mr Spook before next race added airfoils call collec tors worked very well roll rate fairly fast decreased incidence wing plane much faster regular Champ finished out 79 racing season bird everyone saw asked What gizmos below ailerons During next winter rebuilt try speed added 4 rear fuselage better ground control designed new wing symmetrical airfoil rounded 24 Model Aviation ailerons appear up bit wing root airfoil tipscaused washout recommended racing ru~gC shallow theres room everytning uenina T5flK ins foam-covered battery pack receiver foam packing servos on1/a ply tray Note cable-in-Nyrod control surfaces ,, fastened underside OP/s ply mount allowing ins servo within wing Note Du-Bro linkage top rear plywood center cover hard balsa web HEY CHUCK-HOWHES TAPEDHE ALSO WORKS FEET ON WHENDO YOUGET DONT BE DENSE COME THISANDI-4ETURNSTHE 5TICKAJD RUDDER TIME TODO THIS ThE CITATIONGOES GUY TALKS WITHTHROTTLE TOOPEDALS THOrYOU HAD ON AUTO -I GO ON p THE FAR OUT7 TOGIRDLE THE R/C DESIGN-OVER LSA FAIRING BLOCK/4 BALSA SHEET FOR ~TAILV ObETO iSTANBUL ANDBAOALL TAIL SURFACES -Us R/C TYPES DONTI/4x /4 SPRUCE TRIANGLEISANDED TO STREAMLINE ~~ SLEEPLII-EYOULAZY ,,ARTISTS ALONG FUSELAGE CORNERS DONTTHAT\pQ~CHEEZELEVATOR 4 PLYWOOD - oo AILERUN SERVOBUSHING TO GUIDE INTO C/S RIBSAILERON RODS BALSA FAIRING BLOCKFROM SERVOS 3/16 PLYVOD OVER I/4DOWEL V4 PLYVOOD HORN MOUT GOLDBERG BRACKET ON 3/16 PLYnOD BASE 3/IS HARD BALSA FUSELAGE TOP SIDES AND BOTTOM BALSA HATCHI/B X 1/4 FORMERS MID BODY ONLY 1/8 PLY TONGUE i/8 PL WCOD WING SADDLE UP TO FIREWAj 1/4 SQ BALSA REAR SPAR NOSE 8x 3/8 BALSA AILEROIJ T EDGE STOCK ENGINE SERVO 1/16 SHEET BAJ5A SKIN TOP AND BOTfl /8 X 7/16PLYWOD TOPF 3 SPAR SPLLE FRONT ANDSACKI/B PLGA/CflD I/4x 7/16 PLYWOD BOTTOMI/4HARD BALSA SPAR SPUCE FRONT AND BACK AP STRIPS 1/4 X 3/4x 3 4 PYVcGL G MOUNTTOP AND BOTTOM F 11/8SPRUCE510 6B 008 ALUMInUM BLANK3/6 K 3/B HARD3/16K 7/16 HARD BALSA SPARS TATONE MOUNTPLYWOOD DOL8LEDTRIANGLE i/~\-IORTEN TO 13BALSA L EDGEItP AND BOTTOM TO j I/4-2ONYUYJ SCREW INTO TNUThIN LIACOD2W ILLIAMS WHEELI/16SHEETBALSA L EDGETOPAND BOTTOMI/B BALSA RIBS SYTMETRICALAND ALL ALIKE tips Mr Spook II 15-500 class Enya 40 power flew 1980 racing season never could come close enough pylons going around get first great flier much too large heavy racer trimmed out too great angle-of-attack because its weight slowed down early spring 1981 designed entirely new Mr Spook III tried incorpo rate best two former aircraft first built very strong rubberband-mounted wing could slide ward event hard landing set out build tough craft also light wing mounted rubberbands may look nice mounted nylon bolts mishap shock-mounted wing can prevent lot damage occurring OS 25 Schnuerle engine hand decided build plane itwith shorter wing configuration meets AMA Sport Pylon rules minimum 450 sq 29now 450 35 shorter wing has 453 sq finished model time take Toledo hopes helping Sport Pylon cause us raced during last few years have found skill RC flying greatly improved Its too bad lot fliers feel arent good enough pilots try Sport Pylon Racing Its excellent entry point its tough may think Mr Spook IlL has evolved great flier whether flying Sport Pylon just sport plans 15-500 version 15% airfoil thickness 500 sq wing area removing bay wing panel have shorter wing suitable smaller engines flew short-wing version 1981 racing season OS 25 Schnuerle engine After racing season ended built longer 15-500 wing changed Enya 40 very little difference flight characteristics bigger wing except rolls bit slower competitive anything Sport Pylon Racing Construction Study plans read construction pointers plan change engines would suggest use Fox mount engine drilling both mounts same Fox mounts arent pre-drilled switch ing engines no problem plywood aircraft grade Select strong balsa strength needed lightweight balsa strength isnt needed Wing Build wing first will needed fit wing saddle fuselage Cut out ribs identical exception two tip ribs suggest making aluminum template guide cutting ribs Cut 3/16 x 7/16 hard balsa main spars bit long excess left root taper tip ends fit 3/16 sq notch smaller tip ribs Also cut bit long ard balsa rear spars i sq hard balsa leading edge Cut out parts 1 2 3 4 5 wing tips glue together over plan using waxed paper protect plan Let dry thor oughly Make wing panel time over plan flat building board Both right left panels same first because sym metrical airfoil Pin bottom main spar down securely Take 1/4 sq rear spar block up see drawing 9/16 scrap pieces Pin everything securely building board Try Out ribs make sure fit okay glue place Leave pinned down install top main spar Now fit glue eading edge making sure runs out past small tip rib used Super Jet cyanoacrylate glue Ca model makes good joint saves lot time point will notice shorter tip rib has gap between leading edge filled wing tip Take assembled tip cut file V fit leading edge Fit rear joins rear spar block up 9/16 scrap pieces glue wing Let glue dry thoroughly before removing panel board Glue balsa fillers leading edge tips both top bottom needed prevent sanding through final skin Repeat process other panel point remember no right left both wing panels finished mark cut out notches center section ribs accept plywood wing splices will make panels right left see main rib plan Cut out wing splices craft plywood will note -in splices go top -in splices bottom Both 25 40 engine installations snown muse pictures Interchangeable round radial mounts used Match mounting holes both mounts single set firewaliblind nuts can used Screw front wing holds tank access hatch place 26 Model Aviation Tall surfaces should carved/sanded symmetrical airfoil rather leaving blunt know authors interest early Fairchild aircraft thats source rudder shape perfect alignment surfaces predictable first trial flight will prototype needed minor trim transmitter its first flight FULL-SIZE PLANS AVAILABLE. SEE PAGE 164 .TWLEBPEE*BOTPSEE I~BP - l LEAOINSEII,I-__ - I ---0-,-PCBALSa SPOTSPOPESPICES ST/PBoooo / EESRE. OOL PAS154001MBSEE TEST I4BSRRET BOLTTAPER SPEllER TYPICASSEE TESTNOPCRES PATIOST BIBLE RIBSrIEW WILL LOOSE IPt BLSA SLOTSTOICf TO MATCH THE AREA AHAPOEL H5005THBPS SWIlL HE PSEABOTTRAAT-Sr I----PIB OLE - - I IRISE 2CAP/A SI/A BALSE C LOCATIONSHEAP SHAH-RE IORNNCIC ISIECTI_--_ OSEBSOPBAS SEC PEITILIILBLJlC~ ENTA AS-/HII-~io00NoTS--I___ __I PIA T BOISE K4ri5 yj7 -_2 _________________T oTn RETIRE MRPPEOSII PART HE WHOornco 50050U TLI___ I/O P11 SEP00 STOLESEPT11 CGOItRE ALL PORTS ARE HELSAOCTIISE5P/4HLIH NOTEp~4pNOTE MARK NOECS TO HOTTER LINESL. EORAEINS PECES PIE PLELECH LENS NOREE 050 TUSELASE STHENOTSENEH PIA HYANCE P/A PIT SPCRT PEWS RACER IIESISNEO OLPOWN R INIIERET bottom splices heavier take high loads rounding pylons very little dihedral fact little dihedral template isnt shown drawing because angle would imperceptible eye join two panels after ends root spars have trimmed sand root ribs bit top block up panel 3/16 dihedraL Fasten down panels glue top plywood splices set unfasten wing fit install bottom splices wing halves together about time build washout done installing 1/16 balsa skin proper manner First sand high spots framework Apply balsa skin bottom whole wing called plan will leave both wing panels very flexible Turn wing over top side up panel time block up rear spar 9/16-in scrap root 11/16-in scrap junction rear spar tip Fasten down blocked-up panel securely apply top balsa skin glue has dried panel will very rigid washout will set Repeat other paneL Note plan use model Novice Sportsman Aerobatics may want omit washout Remember washout becomes washin flying inverted Cut out balsa skin rear top center section Fit glue ood piece covers aileron connection Install ailerons shown plan Fuselage Cut out parts fasten 3/16 hard balsa rear bottom piece building board Glue ood landing gear saddle front equalizingthe3/16 side Glue -in triangular spruce long erons keeping flush sides bottom piece Glue bulkheads F-2 F-3 making sure truly vertical sides now glued area two bulkheads set bring rear sides using small tail post shown Install x a forming pieces center rear fuselage top -in triangular spruce longerons Make sure notch longerons front wing saddle installed later apply top rear turtle deck time rudder elevator controls will installed area open used cable Nyrod controls balsa forming pieces midway back glue crosspiece holes Nyrod pass through provide exit holes Nyrod side rear suitable height connect control horns Leave forward Nyrod ends bulkhead F-3 unbraced until servos installed Now glue top rear 3/16-in turtle deck can soft balsa Make mock-up stab vertical fin fillets rearward -in scrap Spot-glue together position final tail surfaces making sure finsimulated part lined up straight Shape turtle deck mock-up shown bulkhead F-3 section Y-Y rearward Remove mock-up save fairings fitted position later tail feathers installed leaves front fuselage assembled Glue together two pieces fire wall F-i Bring together sides thick Ca glue bottom F-i hold together short time takes dry use waxed paper protect fingers Fit glue -in triangular spruce longerons bottom sides same side pieces rear firewall F-I Fit install wing saddle-fuselage strengthener can held clamp-type clothespins very nicely glue sets Fit fasten other plywood pieces shown side view Cut out area tail wheel plywood mount install Build forward hatch glue tongue also shown side view Drill install wing holddown dowels landing gear motor mount blind nuts Tail surfaces made entirelyof light weight balsa sure dont get punky kind balsa will break cross-grain very easily want point out need carefully shaping tail surfaces airfoil shown plans Quite often see tail feathers model lightly rounded blunt leading trailing edges blunt edges nearly efficient good alrfoil usually cover surfaces install hinges before finally gluing fuselage After fastening tail surfaces model glue fairings part mock-up side vertical fin Covering good smooth covering job always begins sanding places otherwise would protrude through covering very careful sanding wing tips joints easy sand through rubbed Ambroid glue after sanding added strength used Continued page 121 September 1982 27 P/B EStERS AO CA HARE Hl GIANT SCALE & SPORT PLAN SETS NEW FOR 82 KITS order contains concise construction manual Partial kits include precut wing ribs fuselage farmers prebent landing gear cabana struts Full kits include everything above pluu strip wood necessary hardware assembled landing gear cabana struts fiberglass cowl wheelpants required wbo already have roy plan sets may deduct$IOOO frorothe prices tbe partial full kits listed below 1 B Special MK 3 Convertible 84 Monoplane 78 Biplane Weighs 18 lbs Low Wing & BiplanerPlansS2195 Either Partial Kit $9495 1. Full Kir Sf8495 Pleas $2795 00thPartial Kir $9498 1 Full Kir $79495 Travel Air 2000 108 Classic Scale Biplane Weighs 23 lbs Pleas $2295Partial Kit $8850Full Kit $19850 Travel Air 4000 88 Radial Engine Classic Biplane 23 lbs Plans $2299Partial Kit $9898Full Kit $79980 040 Kir $21400 Fokker DVII 88 German WWI Fighter Biplane 23 lbs Plans $2498Partial Kit 9995Full Kit $79895 WACO UPF7 80 Biplane 23 lbsPlans $2395 Soywith Tripehosed 80 WWI Tn 17 lbsPlansS2 795 Watch rhe ads Parasol version 8/Cs first 3 way convertible airplane Ordering information orders shipped UPS Parcel Post Please add $300 skipping plans $10 kits Make checks money orders payable Jerry Bebrens fastest service send Postal money order bank check Sorry no COD will accepted Send mail orders BEI4REN$ PLAN $ER VICE 3727 Healy Ace Far Rockaniar NV 17897Phone 1212 337-8887 Allow 4S weeks delivery Mr Spook III/Clapp Continued page 27 Super MonoKote covering film Balance Center balance lets call center gravity should shown plans racing better aerobatics Novice Sportsman Pattern balance point can bit farther aft sure balance wing after covered balsa same density used very seldom both sides same weight large wing built #10 common nail needed bring balance wing needs balancing drill small hole extreme tip nail glue Ca model perfect balance nose- tail-heavy may trimmed flight left way trying balance perfection Condition airCraft will trim velocity wasflying trimmed higher lower velocity amount pressure trimmed elevator will vary cause need excessive control stick man ipulation counteract course farther out balance aircraft elevator used trim worse condition becomes other forces can involved aircraft like Mr Spook III 0-0 incidence amount down thrust usedknowledge out-of-trim char acteristics can help get perfect balance longitudinally Lateral balance taken care primarily balancing wing Flying model has given pleasur able hours flying both Pylon Racing fun flying doesnt seem have bad traits ailerons either wing super-Sensitive first test flying plane would advise setting aileron throws minimum Rolls small wing much faster long wing because less area rotate Either way shows no tendency tip stall takeoff pulled up sharply can credited two degrees washout can brought landing three-point attitude way using little back pressure stick mini mizes usual extended glide flare-out Anyone aileron experience will feel ease flying Mr Spook III Propeller Tests diffcrent props OS 251SR witlt 15% nitro fuel props wood except noted Static tests conducted engine mounted Mr Spook Ill Prop 7-6 Top Flite racing 8-4 Zingor 8-5 Zinqer 8-6 Zinqer 8-6 Tornado nylon 8-7 Zingfir 8-8 Top Flite racing 9-4 Zinger 9-5 Zinger 9-6 Zinger 9-7 Zinger 9-7 Zinger rpm Lb Thrust 1650021/2 1650031/2 150003-1/8 140002Io 140002/4 135002/4 13000iv4 1350031/2 1350033/4 1200031/4 1000021/4 1400021/2 Taking account rpm will increase model moving through air flight because load prop lessen ing would seem wise select prop allows higher pitch used advantage increase rpm best combina tion pitch rpm diameter thrust seems 9-in-dia group 8-6 9-6 Zinger note 2000 rpm lost 9-6 thrust improved Continued page 124 rsTERLING MODELS Priced Right 82 Rea1 Sporty Kit FS38 Wingspan 40-5/16 Scale 2-118 ice $4595 Radio Control Control Line 1525 Engine Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line Free Flight Rubber Power PENNY PINCHER Wingspan 132 CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA ISO MUSTANGSABRE JET PIPER CUB T35 THUNDERBIRD p1 $198 EACH-For mail order auth orized Retailer send $198 Penny Pincher plus $100 minimum Shipping Add $150 kit Catalog Request Catalog entire line airplane control line model kits R/C scale & Trainer Kits boat model kits accessories etc $100 enclosed Secrets M6del Building & Con trol Line Book 50 1st Class mail delivery add $50 US & Canada Air Mail other countries add $165 Send STERLING MODELS 3620 C St Phila PA 19134 LN ame AddressState.... Zip September1982 121 Tiper VaEabond Its incredible heres Epoxy Point thats Pre-mbed can! O0VETE No pot life No mIxing 0 Fuelproof Light weight r tough a Flexible 420 Babylon Rd Horsham PA 19044 USA 213 kfi1A1LdtS I/OQJ0MR/C GOODIES CcQQantjPO BOX 192 -CA 91408U UHEAVY DUTYSPECIAL 825I 4-IN SANDERDELUXESYSTEM UAdjustable tableFlite wt 101 oz Miter guide4 Ch Complete 75g 10 metal Ix 4 RegSand discsServos SI 5$275NicadsChgr CH14Spec $2495Reg $27495 Ship $ 350Spec $15995 AIR CAPITALShip $ 650 ZINGER WOODReady-To-FlyFB 100 PROPS 6PockLess Radio EngineII 74-56 $5 2357 Span 8-4-5-65 63Ship SID rULLPWR9456 5 83 SERVO 3/4x 1 7/16 l0-4-5-6 6 39$65040-61 Engine1 x 19/16 1 381l-6775 720Reg $15995 Spec$139951 oz Dean s plugl24s69 65$2500 IReg $22 95 ISpec $13 95Other SizesSame Ship $250Discounts-Ship $200MOREI LtO~m$1 70 ~i~Add Calif Sales Tax 4-1/2% Surcharge Visa Master Cardj NE WJRIAT LAKES MODELMAHER & MOLD AMIA~ Deg Eogine POST OFFICE BOX 308THOMAS J MAHER TAWAS CITY MICHIGAN 48763Podct TELEPHONE 517 362-6078 COMPOSITE ANSTRUTION 1% SCALE 12rD3AI TYPE 99 VALT-6 SNJ HARVARD AICHIU 633/8 Span 45- 60 Power 708Span60- 90Power$18800 $22800 WE THINK YOU WILL AGREE THAT THEY ARE THE BEST NAWLLTD KITS YET FUSALAGE WINGS TAIL SURFACES WHITE EPOXY FINISH READY FOR PAINT & DETAILING EURATHANE FOAM RIGIDLY SUPPORTS EPOXY GELL COAT FIBERGLASS REINFORCED AT STRESS POINTS ONLY ASSEMBLY INSTALLATION OF EOUIPMENT & PAINTING REOLIIRED SCALE WHEELS INCLUDED NO NEED TO COVER WITH BALSA SHEET OR FILM SUPERIOR PRODUCT Whole Lot Left CLUBS CHECK OUT OUR SPECIAL INTRODUCTORY OFFER KITs 9 HL GLIDERSI0THSC4LE XCUMENTAWN DWGS 3SATELLITEKITSOFNOTABLEFAIRCHILDS 17 OLD TIME GAS-- rAIRCHIL FCI Send25for 5RUBBER3NORDICI 1980 catata 9 COMPETITION GASGEORGEHCLAPP FUEL affd DT TIMERS -$1075 eachCENTRAL SCU4RE FAl Model Supply --- N /3036 OX7TORRAECA10INfCV $100 -REFUNDED WITH ORDER lower rpm 9-6 leaves room Radio Technique/Myers increase rpm flight Continued page 30 Conclusion would like give credit good friend Ken Little did flying photography Ken modeler going back late 20s like myself also professional photographer decide build model both wings changeable engines will give several possible combinations long wing 25 engine quite docile short wing 40 engine. Have fun SAFE FLYING IS NO ACCIDENT properly balanced control throws set up controls harmonized word harmonized mean controls should set up have ability provide equal pitch roll yaw rates helps have dual-rate transmitter because can obtain control harmony its screwdriver adjustments next point aware makes difference Watson oriented respect airplane cant just stuff some empty space go fly units long axis must have particular position respect airplane Helicopter center line likewise cover Watson box must lie particular direction case found best results Watsons long axis leaned back about 100 being parallel Heli copter rotor shaft cover aligned fore-and-aft direction true because unit totally free responses lateral acceleraton nor its responses lateral accelerations equal directions have experiment bit get right Once have got right works very welL dont get right will think its defective did Larry Davidson flies RC Helicopter very well performance gusty wind noticably better Watson Stabilizer Does tell something like give product boost performs well Radio Shack Metal Detector 63-3001 appears lead photo reason Heres scene time Saturday afternoon three-day weekend sched uled testing Watson Stabilizer time 610 pnt just 10 minutes after Larry Davidson has closed hobby shop spare parts rye got mail column soon Post Oflice opens Tuesday rm out yard flying Heliboy place place making adjustments suddenly engine stops flight Fortunately rm flying low fast happens landing no problem walk over Heliboy discover needle valve has fallen outsomeplace lawn spent next hour hands knees looking piece brass inch long neigh bor asked know anyone metal detector said No Tim said Radio Shack sells about $40 said Heres $40 Get can Tim came back unit getting dark started learning find metaL found lot scraps aluminum foilprobably gifts rotary power mower Tim pretty clever cut piece brass tubing about inch long look unit adjusted could find tubing easily pretty sure needle valve would turn up did Weekend saved much three days flying worth deadline Now know anyone wants buy metal detector Lease Rent George M Myers 70 Froehlich Farm Rd Hicksvjlla NY 11801 Distance Record Hiner Continued page 33 noon no lift encountered Before second launch Dale Folkening took some pics crew Sailplane second launch 1203 pm light lift encountered took over two hours Pegasus cover first 25 miles early part flight characterized small fairly strong thermals cloud base Jack would keep Pegasus thermal let drift downwind until thermal died Only time would Jack fly straight down road until Pegasus ran next thermaL kept average speed down because ground speed due wind drift about 5 mph thermaling Pegasus much easier see under cloud thermal clear blue sky Between thermals Pegasus flying ground speed of25 30 mph aggressive flying style would result higher speed also greater chance premature landing last hour 18 minutes flight covered 30 miles thermals now very 124 Modet Aviation
Edition: Model Aviation - 1982/09
Page Numbers: 22, 23, 24, 25, 26, 27, 121, 124
George H ciapp NO OCR TEXT Can tell lathe short wing long wing views short wing right has slightly lower aspect ratioand has 25 engine vs 40 long-wing version main difference flight isthatthe long wing rolls slowly Note rubberbandsfor holding wing Author says can prevent much damage mishap compared rigid nylon bolt hold-down method Rounded wing tips aerodynamically clean Wheels angled ward slightly improved ground handling photos author shelved until sometime later 1979 club am Syracuse Thunder bird Aero Radio Society began season Sport Pylon Racing used 1936 Old-Timer design Torc published trainer Model Builder 19781 entered Novice get some experience rounding pylons third race came up Torc under repair airplane piece outgrowth Champ kit knew what wrong reasoned Friezetype ailerons solved same problem real aircraft during late 1920s would try something like leading edge Friezetype aileron projects below wing up position produce needed drag offset other down aileron wasnt time rebuild wing Frieze-type ailerons decided would modify existing ailerons equalize lateral drag did installing small inverted airfoils below aileron gap allow aifflow go between aileron went up leading edge small airfoil came down farther slipstream equalize aileron drag See July 1980 MA Letters Editor sketch system time test Mr Spook before next race added airfoils call collec tors worked very well roll rate fairly fast decreased incidence wing plane much faster regular Champ finished out 79 racing season bird everyone saw asked What gizmos below ailerons During next winter rebuilt try speed added 4 rear fuselage better ground control designed new wing symmetrical airfoil rounded 24 Model Aviation ailerons appear up bit wing root airfoil tipscaused washout recommended racing ru~gC shallow theres room everytning uenina T5flK ins foam-covered battery pack receiver foam packing servos on1/a ply tray Note cable-in-Nyrod control surfaces ,, fastened underside OP/s ply mount allowing ins servo within wing Note Du-Bro linkage top rear plywood center cover hard balsa web HEY CHUCK-HOWHES TAPEDHE ALSO WORKS FEET ON WHENDO YOUGET DONT BE DENSE COME THISANDI-4ETURNSTHE 5TICKAJD RUDDER TIME TODO THIS ThE CITATIONGOES GUY TALKS WITHTHROTTLE TOOPEDALS THOrYOU HAD ON AUTO -I GO ON p THE FAR OUT7 TOGIRDLE THE R/C DESIGN-OVER LSA FAIRING BLOCK/4 BALSA SHEET FOR ~TAILV ObETO iSTANBUL ANDBAOALL TAIL SURFACES -Us R/C TYPES DONTI/4x /4 SPRUCE TRIANGLEISANDED TO STREAMLINE ~~ SLEEPLII-EYOULAZY ,,ARTISTS ALONG FUSELAGE CORNERS DONTTHAT\pQ~CHEEZELEVATOR 4 PLYWOOD - oo AILERUN SERVOBUSHING TO GUIDE INTO C/S RIBSAILERON RODS BALSA FAIRING BLOCKFROM SERVOS 3/16 PLYVOD OVER I/4DOWEL V4 PLYVOOD HORN MOUT GOLDBERG BRACKET ON 3/16 PLYnOD BASE 3/IS HARD BALSA FUSELAGE TOP SIDES AND BOTTOM BALSA HATCHI/B X 1/4 FORMERS MID BODY ONLY 1/8 PLY TONGUE i/8 PL WCOD WING SADDLE UP TO FIREWAj 1/4 SQ BALSA REAR SPAR NOSE 8x 3/8 BALSA AILEROIJ T EDGE STOCK ENGINE SERVO 1/16 SHEET BAJ5A SKIN TOP AND BOTfl /8 X 7/16PLYWOD TOPF 3 SPAR SPLLE FRONT ANDSACKI/B PLGA/CflD I/4x 7/16 PLYWOD BOTTOMI/4HARD BALSA SPAR SPUCE FRONT AND BACK AP STRIPS 1/4 X 3/4x 3 4 PYVcGL G MOUNTTOP AND BOTTOM F 11/8SPRUCE510 6B 008 ALUMInUM BLANK3/6 K 3/B HARD3/16K 7/16 HARD BALSA SPARS TATONE MOUNTPLYWOOD DOL8LEDTRIANGLE i/~\-IORTEN TO 13BALSA L EDGEItP AND BOTTOM TO j I/4-2ONYUYJ SCREW INTO TNUThIN LIACOD2W ILLIAMS WHEELI/16SHEETBALSA L EDGETOPAND BOTTOMI/B BALSA RIBS SYTMETRICALAND ALL ALIKE tips Mr Spook II 15-500 class Enya 40 power flew 1980 racing season never could come close enough pylons going around get first great flier much too large heavy racer trimmed out too great angle-of-attack because its weight slowed down early spring 1981 designed entirely new Mr Spook III tried incorpo rate best two former aircraft first built very strong rubberband-mounted wing could slide ward event hard landing set out build tough craft also light wing mounted rubberbands may look nice mounted nylon bolts mishap shock-mounted wing can prevent lot damage occurring OS 25 Schnuerle engine hand decided build plane itwith shorter wing configuration meets AMA Sport Pylon rules minimum 450 sq 29now 450 35 shorter wing has 453 sq finished model time take Toledo hopes helping Sport Pylon cause us raced during last few years have found skill RC flying greatly improved Its too bad lot fliers feel arent good enough pilots try Sport Pylon Racing Its excellent entry point its tough may think Mr Spook IlL has evolved great flier whether flying Sport Pylon just sport plans 15-500 version 15% airfoil thickness 500 sq wing area removing bay wing panel have shorter wing suitable smaller engines flew short-wing version 1981 racing season OS 25 Schnuerle engine After racing season ended built longer 15-500 wing changed Enya 40 very little difference flight characteristics bigger wing except rolls bit slower competitive anything Sport Pylon Racing Construction Study plans read construction pointers plan change engines would suggest use Fox mount engine drilling both mounts same Fox mounts arent pre-drilled switch ing engines no problem plywood aircraft grade Select strong balsa strength needed lightweight balsa strength isnt needed Wing Build wing first will needed fit wing saddle fuselage Cut out ribs identical exception two tip ribs suggest making aluminum template guide cutting ribs Cut 3/16 x 7/16 hard balsa main spars bit long excess left root taper tip ends fit 3/16 sq notch smaller tip ribs Also cut bit long ard balsa rear spars i sq hard balsa leading edge Cut out parts 1 2 3 4 5 wing tips glue together over plan using waxed paper protect plan Let dry thor oughly Make wing panel time over plan flat building board Both right left panels same first because sym metrical airfoil Pin bottom main spar down securely Take 1/4 sq rear spar block up see drawing 9/16 scrap pieces Pin everything securely building board Try Out ribs make sure fit okay glue place Leave pinned down install top main spar Now fit glue eading edge making sure runs out past small tip rib used Super Jet cyanoacrylate glue Ca model makes good joint saves lot time point will notice shorter tip rib has gap between leading edge filled wing tip Take assembled tip cut file V fit leading edge Fit rear joins rear spar block up 9/16 scrap pieces glue wing Let glue dry thoroughly before removing panel board Glue balsa fillers leading edge tips both top bottom needed prevent sanding through final skin Repeat process other panel point remember no right left both wing panels finished mark cut out notches center section ribs accept plywood wing splices will make panels right left see main rib plan Cut out wing splices craft plywood will note -in splices go top -in splices bottom Both 25 40 engine installations snown muse pictures Interchangeable round radial mounts used Match mounting holes both mounts single set firewaliblind nuts can used Screw front wing holds tank access hatch place 26 Model Aviation Tall surfaces should carved/sanded symmetrical airfoil rather leaving blunt know authors interest early Fairchild aircraft thats source rudder shape perfect alignment surfaces predictable first trial flight will prototype needed minor trim transmitter its first flight FULL-SIZE PLANS AVAILABLE. SEE PAGE 164 .TWLEBPEE*BOTPSEE I~BP - l LEAOINSEII,I-__ - I ---0-,-PCBALSa SPOTSPOPESPICES ST/PBoooo / EESRE. OOL PAS154001MBSEE TEST I4BSRRET BOLTTAPER SPEllER TYPICASSEE TESTNOPCRES PATIOST BIBLE RIBSrIEW WILL LOOSE IPt BLSA SLOTSTOICf TO MATCH THE AREA AHAPOEL H5005THBPS SWIlL HE PSEABOTTRAAT-Sr I----PIB OLE - - I IRISE 2CAP/A SI/A BALSE C LOCATIONSHEAP SHAH-RE IORNNCIC ISIECTI_--_ OSEBSOPBAS SEC PEITILIILBLJlC~ ENTA AS-/HII-~io00NoTS--I___ __I PIA T BOISE K4ri5 yj7 -_2 _________________T oTn RETIRE MRPPEOSII PART HE WHOornco 50050U TLI___ I/O P11 SEP00 STOLESEPT11 CGOItRE ALL PORTS ARE HELSAOCTIISE5P/4HLIH NOTEp~4pNOTE MARK NOECS TO HOTTER LINESL. EORAEINS PECES PIE PLELECH LENS NOREE 050 TUSELASE STHENOTSENEH PIA HYANCE P/A PIT SPCRT PEWS RACER IIESISNEO OLPOWN R INIIERET bottom splices heavier take high loads rounding pylons very little dihedral fact little dihedral template isnt shown drawing because angle would imperceptible eye join two panels after ends root spars have trimmed sand root ribs bit top block up panel 3/16 dihedraL Fasten down panels glue top plywood splices set unfasten wing fit install bottom splices wing halves together about time build washout done installing 1/16 balsa skin proper manner First sand high spots framework Apply balsa skin bottom whole wing called plan will leave both wing panels very flexible Turn wing over top side up panel time block up rear spar 9/16-in scrap root 11/16-in scrap junction rear spar tip Fasten down blocked-up panel securely apply top balsa skin glue has dried panel will very rigid washout will set Repeat other paneL Note plan use model Novice Sportsman Aerobatics may want omit washout Remember washout becomes washin flying inverted Cut out balsa skin rear top center section Fit glue ood piece covers aileron connection Install ailerons shown plan Fuselage Cut out parts fasten 3/16 hard balsa rear bottom piece building board Glue ood landing gear saddle front equalizingthe3/16 side Glue -in triangular spruce long erons keeping flush sides bottom piece Glue bulkheads F-2 F-3 making sure truly vertical sides now glued area two bulkheads set bring rear sides using small tail post shown Install x a forming pieces center rear fuselage top -in triangular spruce longerons Make sure notch longerons front wing saddle installed later apply top rear turtle deck time rudder elevator controls will installed area open used cable Nyrod controls balsa forming pieces midway back glue crosspiece holes Nyrod pass through provide exit holes Nyrod side rear suitable height connect control horns Leave forward Nyrod ends bulkhead F-3 unbraced until servos installed Now glue top rear 3/16-in turtle deck can soft balsa Make mock-up stab vertical fin fillets rearward -in scrap Spot-glue together position final tail surfaces making sure finsimulated part lined up straight Shape turtle deck mock-up shown bulkhead F-3 section Y-Y rearward Remove mock-up save fairings fitted position later tail feathers installed leaves front fuselage assembled Glue together two pieces fire wall F-i Bring together sides thick Ca glue bottom F-i hold together short time takes dry use waxed paper protect fingers Fit glue -in triangular spruce longerons bottom sides same side pieces rear firewall F-I Fit install wing saddle-fuselage strengthener can held clamp-type clothespins very nicely glue sets Fit fasten other plywood pieces shown side view Cut out area tail wheel plywood mount install Build forward hatch glue tongue also shown side view Drill install wing holddown dowels landing gear motor mount blind nuts Tail surfaces made entirelyof light weight balsa sure dont get punky kind balsa will break cross-grain very easily want point out need carefully shaping tail surfaces airfoil shown plans Quite often see tail feathers model lightly rounded blunt leading trailing edges blunt edges nearly efficient good alrfoil usually cover surfaces install hinges before finally gluing fuselage After fastening tail surfaces model glue fairings part mock-up side vertical fin Covering good smooth covering job always begins sanding places otherwise would protrude through covering very careful sanding wing tips joints easy sand through rubbed Ambroid glue after sanding added strength used Continued page 121 September 1982 27 P/B EStERS AO CA HARE Hl GIANT SCALE & SPORT PLAN SETS NEW FOR 82 KITS order contains concise construction manual Partial kits include precut wing ribs fuselage farmers prebent landing gear cabana struts Full kits include everything above pluu strip wood necessary hardware assembled landing gear cabana struts fiberglass cowl wheelpants required wbo already have roy plan sets may deduct$IOOO frorothe prices tbe partial full kits listed below 1 B Special MK 3 Convertible 84 Monoplane 78 Biplane Weighs 18 lbs Low Wing & BiplanerPlansS2195 Either Partial Kit $9495 1. Full Kir Sf8495 Pleas $2795 00thPartial Kir $9498 1 Full Kir $79495 Travel Air 2000 108 Classic Scale Biplane Weighs 23 lbs Pleas $2295Partial Kit $8850Full Kit $19850 Travel Air 4000 88 Radial Engine Classic Biplane 23 lbs Plans $2299Partial Kit $9898Full Kit $79980 040 Kir $21400 Fokker DVII 88 German WWI Fighter Biplane 23 lbs Plans $2498Partial Kit 9995Full Kit $79895 WACO UPF7 80 Biplane 23 lbsPlans $2395 Soywith Tripehosed 80 WWI Tn 17 lbsPlansS2 795 Watch rhe ads Parasol version 8/Cs first 3 way convertible airplane Ordering information orders shipped UPS Parcel Post Please add $300 skipping plans $10 kits Make checks money orders payable Jerry Bebrens fastest service send Postal money order bank check Sorry no COD will accepted Send mail orders BEI4REN$ PLAN $ER VICE 3727 Healy Ace Far Rockaniar NV 17897Phone 1212 337-8887 Allow 4S weeks delivery Mr Spook III/Clapp Continued page 27 Super MonoKote covering film Balance Center balance lets call center gravity should shown plans racing better aerobatics Novice Sportsman Pattern balance point can bit farther aft sure balance wing after covered balsa same density used very seldom both sides same weight large wing built #10 common nail needed bring balance wing needs balancing drill small hole extreme tip nail glue Ca model perfect balance nose- tail-heavy may trimmed flight left way trying balance perfection Condition airCraft will trim velocity wasflying trimmed higher lower velocity amount pressure trimmed elevator will vary cause need excessive control stick man ipulation counteract course farther out balance aircraft elevator used trim worse condition becomes other forces can involved aircraft like Mr Spook III 0-0 incidence amount down thrust usedknowledge out-of-trim char acteristics can help get perfect balance longitudinally Lateral balance taken care primarily balancing wing Flying model has given pleasur able hours flying both Pylon Racing fun flying doesnt seem have bad traits ailerons either wing super-Sensitive first test flying plane would advise setting aileron throws minimum Rolls small wing much faster long wing because less area rotate Either way shows no tendency tip stall takeoff pulled up sharply can credited two degrees washout can brought landing three-point attitude way using little back pressure stick mini mizes usual extended glide flare-out Anyone aileron experience will feel ease flying Mr Spook III Propeller Tests diffcrent props OS 251SR witlt 15% nitro fuel props wood except noted Static tests conducted engine mounted Mr Spook Ill Prop 7-6 Top Flite racing 8-4 Zingor 8-5 Zinqer 8-6 Zinqer 8-6 Tornado nylon 8-7 Zingfir 8-8 Top Flite racing 9-4 Zinger 9-5 Zinger 9-6 Zinger 9-7 Zinger 9-7 Zinger rpm Lb Thrust 1650021/2 1650031/2 150003-1/8 140002Io 140002/4 135002/4 13000iv4 1350031/2 1350033/4 1200031/4 1000021/4 1400021/2 Taking account rpm will increase model moving through air flight because load prop lessen ing would seem wise select prop allows higher pitch used advantage increase rpm best combina tion pitch rpm diameter thrust seems 9-in-dia group 8-6 9-6 Zinger note 2000 rpm lost 9-6 thrust improved Continued page 124 rsTERLING MODELS Priced Right 82 Rea1 Sporty Kit FS38 Wingspan 40-5/16 Scale 2-118 ice $4595 Radio Control Control Line 1525 Engine Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line Free Flight Rubber Power PENNY PINCHER Wingspan 132 CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA ISO MUSTANGSABRE JET PIPER CUB T35 THUNDERBIRD p1 $198 EACH-For mail order auth orized Retailer send $198 Penny Pincher plus $100 minimum Shipping Add $150 kit Catalog Request Catalog entire line airplane control line model kits R/C scale & Trainer Kits boat model kits accessories etc $100 enclosed Secrets M6del Building & Con trol Line Book 50 1st Class mail delivery add $50 US & Canada Air Mail other countries add $165 Send STERLING MODELS 3620 C St Phila PA 19134 LN ame AddressState.... Zip September1982 121 Tiper VaEabond Its incredible heres Epoxy Point thats Pre-mbed can! O0VETE No pot life No mIxing 0 Fuelproof Light weight r tough a Flexible 420 Babylon Rd Horsham PA 19044 USA 213 kfi1A1LdtS I/OQJ0MR/C GOODIES CcQQantjPO BOX 192 -CA 91408U UHEAVY DUTYSPECIAL 825I 4-IN SANDERDELUXESYSTEM UAdjustable tableFlite wt 101 oz Miter guide4 Ch Complete 75g 10 metal Ix 4 RegSand discsServos SI 5$275NicadsChgr CH14Spec $2495Reg $27495 Ship $ 350Spec $15995 AIR CAPITALShip $ 650 ZINGER WOODReady-To-FlyFB 100 PROPS 6PockLess Radio EngineII 74-56 $5 2357 Span 8-4-5-65 63Ship SID rULLPWR9456 5 83 SERVO 3/4x 1 7/16 l0-4-5-6 6 39$65040-61 Engine1 x 19/16 1 381l-6775 720Reg $15995 Spec$139951 oz Dean s plugl24s69 65$2500 IReg $22 95 ISpec $13 95Other SizesSame Ship $250Discounts-Ship $200MOREI LtO~m$1 70 ~i~Add Calif Sales Tax 4-1/2% Surcharge Visa Master Cardj NE WJRIAT LAKES MODELMAHER & MOLD AMIA~ Deg Eogine POST OFFICE BOX 308THOMAS J MAHER TAWAS CITY MICHIGAN 48763Podct TELEPHONE 517 362-6078 COMPOSITE ANSTRUTION 1% SCALE 12rD3AI TYPE 99 VALT-6 SNJ HARVARD AICHIU 633/8 Span 45- 60 Power 708Span60- 90Power$18800 $22800 WE THINK YOU WILL AGREE THAT THEY ARE THE BEST NAWLLTD KITS YET FUSALAGE WINGS TAIL SURFACES WHITE EPOXY FINISH READY FOR PAINT & DETAILING EURATHANE FOAM RIGIDLY SUPPORTS EPOXY GELL COAT FIBERGLASS REINFORCED AT STRESS POINTS ONLY ASSEMBLY INSTALLATION OF EOUIPMENT & PAINTING REOLIIRED SCALE WHEELS INCLUDED NO NEED TO COVER WITH BALSA SHEET OR FILM SUPERIOR PRODUCT Whole Lot Left CLUBS CHECK OUT OUR SPECIAL INTRODUCTORY OFFER KITs 9 HL GLIDERSI0THSC4LE XCUMENTAWN DWGS 3SATELLITEKITSOFNOTABLEFAIRCHILDS 17 OLD TIME GAS-- rAIRCHIL FCI Send25for 5RUBBER3NORDICI 1980 catata 9 COMPETITION GASGEORGEHCLAPP FUEL affd DT TIMERS -$1075 eachCENTRAL SCU4RE FAl Model Supply --- N /3036 OX7TORRAECA10INfCV $100 -REFUNDED WITH ORDER lower rpm 9-6 leaves room Radio Technique/Myers increase rpm flight Continued page 30 Conclusion would like give credit good friend Ken Little did flying photography Ken modeler going back late 20s like myself also professional photographer decide build model both wings changeable engines will give several possible combinations long wing 25 engine quite docile short wing 40 engine. Have fun SAFE FLYING IS NO ACCIDENT properly balanced control throws set up controls harmonized word harmonized mean controls should set up have ability provide equal pitch roll yaw rates helps have dual-rate transmitter because can obtain control harmony its screwdriver adjustments next point aware makes difference Watson oriented respect airplane cant just stuff some empty space go fly units long axis must have particular position respect airplane Helicopter center line likewise cover Watson box must lie particular direction case found best results Watsons long axis leaned back about 100 being parallel Heli copter rotor shaft cover aligned fore-and-aft direction true because unit totally free responses lateral acceleraton nor its responses lateral accelerations equal directions have experiment bit get right Once have got right works very welL dont get right will think its defective did Larry Davidson flies RC Helicopter very well performance gusty wind noticably better Watson Stabilizer Does tell something like give product boost performs well Radio Shack Metal Detector 63-3001 appears lead photo reason Heres scene time Saturday afternoon three-day weekend sched uled testing Watson Stabilizer time 610 pnt just 10 minutes after Larry Davidson has closed hobby shop spare parts rye got mail column soon Post Oflice opens Tuesday rm out yard flying Heliboy place place making adjustments suddenly engine stops flight Fortunately rm flying low fast happens landing no problem walk over Heliboy discover needle valve has fallen outsomeplace lawn spent next hour hands knees looking piece brass inch long neigh bor asked know anyone metal detector said No Tim said Radio Shack sells about $40 said Heres $40 Get can Tim came back unit getting dark started learning find metaL found lot scraps aluminum foilprobably gifts rotary power mower Tim pretty clever cut piece brass tubing about inch long look unit adjusted could find tubing easily pretty sure needle valve would turn up did Weekend saved much three days flying worth deadline Now know anyone wants buy metal detector Lease Rent George M Myers 70 Froehlich Farm Rd Hicksvjlla NY 11801 Distance Record Hiner Continued page 33 noon no lift encountered Before second launch Dale Folkening took some pics crew Sailplane second launch 1203 pm light lift encountered took over two hours Pegasus cover first 25 miles early part flight characterized small fairly strong thermals cloud base Jack would keep Pegasus thermal let drift downwind until thermal died Only time would Jack fly straight down road until Pegasus ran next thermaL kept average speed down because ground speed due wind drift about 5 mph thermaling Pegasus much easier see under cloud thermal clear blue sky Between thermals Pegasus flying ground speed of25 30 mph aggressive flying style would result higher speed also greater chance premature landing last hour 18 minutes flight covered 30 miles thermals now very 124 Modet Aviation
Edition: Model Aviation - 1982/09
Page Numbers: 22, 23, 24, 25, 26, 27, 121, 124
George H ciapp NO OCR TEXT Can tell lathe short wing long wing views short wing right has slightly lower aspect ratioand has 25 engine vs 40 long-wing version main difference flight isthatthe long wing rolls slowly Note rubberbandsfor holding wing Author says can prevent much damage mishap compared rigid nylon bolt hold-down method Rounded wing tips aerodynamically clean Wheels angled ward slightly improved ground handling photos author shelved until sometime later 1979 club am Syracuse Thunder bird Aero Radio Society began season Sport Pylon Racing used 1936 Old-Timer design Torc published trainer Model Builder 19781 entered Novice get some experience rounding pylons third race came up Torc under repair airplane piece outgrowth Champ kit knew what wrong reasoned Friezetype ailerons solved same problem real aircraft during late 1920s would try something like leading edge Friezetype aileron projects below wing up position produce needed drag offset other down aileron wasnt time rebuild wing Frieze-type ailerons decided would modify existing ailerons equalize lateral drag did installing small inverted airfoils below aileron gap allow aifflow go between aileron went up leading edge small airfoil came down farther slipstream equalize aileron drag See July 1980 MA Letters Editor sketch system time test Mr Spook before next race added airfoils call collec tors worked very well roll rate fairly fast decreased incidence wing plane much faster regular Champ finished out 79 racing season bird everyone saw asked What gizmos below ailerons During next winter rebuilt try speed added 4 rear fuselage better ground control designed new wing symmetrical airfoil rounded 24 Model Aviation ailerons appear up bit wing root airfoil tipscaused washout recommended racing ru~gC shallow theres room everytning uenina T5flK ins foam-covered battery pack receiver foam packing servos on1/a ply tray Note cable-in-Nyrod control surfaces ,, fastened underside OP/s ply mount allowing ins servo within wing Note Du-Bro linkage top rear plywood center cover hard balsa web HEY CHUCK-HOWHES TAPEDHE ALSO WORKS FEET ON WHENDO YOUGET DONT BE DENSE COME THISANDI-4ETURNSTHE 5TICKAJD RUDDER TIME TODO THIS ThE CITATIONGOES GUY TALKS WITHTHROTTLE TOOPEDALS THOrYOU HAD ON AUTO -I GO ON p THE FAR OUT7 TOGIRDLE THE R/C DESIGN-OVER LSA FAIRING BLOCK/4 BALSA SHEET FOR ~TAILV ObETO iSTANBUL ANDBAOALL TAIL SURFACES -Us R/C TYPES DONTI/4x /4 SPRUCE TRIANGLEISANDED TO STREAMLINE ~~ SLEEPLII-EYOULAZY ,,ARTISTS ALONG FUSELAGE CORNERS DONTTHAT\pQ~CHEEZELEVATOR 4 PLYWOOD - oo AILERUN SERVOBUSHING TO GUIDE INTO C/S RIBSAILERON RODS BALSA FAIRING BLOCKFROM SERVOS 3/16 PLYVOD OVER I/4DOWEL V4 PLYVOOD HORN MOUT GOLDBERG BRACKET ON 3/16 PLYnOD BASE 3/IS HARD BALSA FUSELAGE TOP SIDES AND BOTTOM BALSA HATCHI/B X 1/4 FORMERS MID BODY ONLY 1/8 PLY TONGUE i/8 PL WCOD WING SADDLE UP TO FIREWAj 1/4 SQ BALSA REAR SPAR NOSE 8x 3/8 BALSA AILEROIJ T EDGE STOCK ENGINE SERVO 1/16 SHEET BAJ5A SKIN TOP AND BOTfl /8 X 7/16PLYWOD TOPF 3 SPAR SPLLE FRONT ANDSACKI/B PLGA/CflD I/4x 7/16 PLYWOD BOTTOMI/4HARD BALSA SPAR SPUCE FRONT AND BACK AP STRIPS 1/4 X 3/4x 3 4 PYVcGL G MOUNTTOP AND BOTTOM F 11/8SPRUCE510 6B 008 ALUMInUM BLANK3/6 K 3/B HARD3/16K 7/16 HARD BALSA SPARS TATONE MOUNTPLYWOOD DOL8LEDTRIANGLE i/~\-IORTEN TO 13BALSA L EDGEItP AND BOTTOM TO j I/4-2ONYUYJ SCREW INTO TNUThIN LIACOD2W ILLIAMS WHEELI/16SHEETBALSA L EDGETOPAND BOTTOMI/B BALSA RIBS SYTMETRICALAND ALL ALIKE tips Mr Spook II 15-500 class Enya 40 power flew 1980 racing season never could come close enough pylons going around get first great flier much too large heavy racer trimmed out too great angle-of-attack because its weight slowed down early spring 1981 designed entirely new Mr Spook III tried incorpo rate best two former aircraft first built very strong rubberband-mounted wing could slide ward event hard landing set out build tough craft also light wing mounted rubberbands may look nice mounted nylon bolts mishap shock-mounted wing can prevent lot damage occurring OS 25 Schnuerle engine hand decided build plane itwith shorter wing configuration meets AMA Sport Pylon rules minimum 450 sq 29now 450 35 shorter wing has 453 sq finished model time take Toledo hopes helping Sport Pylon cause us raced during last few years have found skill RC flying greatly improved Its too bad lot fliers feel arent good enough pilots try Sport Pylon Racing Its excellent entry point its tough may think Mr Spook IlL has evolved great flier whether flying Sport Pylon just sport plans 15-500 version 15% airfoil thickness 500 sq wing area removing bay wing panel have shorter wing suitable smaller engines flew short-wing version 1981 racing season OS 25 Schnuerle engine After racing season ended built longer 15-500 wing changed Enya 40 very little difference flight characteristics bigger wing except rolls bit slower competitive anything Sport Pylon Racing Construction Study plans read construction pointers plan change engines would suggest use Fox mount engine drilling both mounts same Fox mounts arent pre-drilled switch ing engines no problem plywood aircraft grade Select strong balsa strength needed lightweight balsa strength isnt needed Wing Build wing first will needed fit wing saddle fuselage Cut out ribs identical exception two tip ribs suggest making aluminum template guide cutting ribs Cut 3/16 x 7/16 hard balsa main spars bit long excess left root taper tip ends fit 3/16 sq notch smaller tip ribs Also cut bit long ard balsa rear spars i sq hard balsa leading edge Cut out parts 1 2 3 4 5 wing tips glue together over plan using waxed paper protect plan Let dry thor oughly Make wing panel time over plan flat building board Both right left panels same first because sym metrical airfoil Pin bottom main spar down securely Take 1/4 sq rear spar block up see drawing 9/16 scrap pieces Pin everything securely building board Try Out ribs make sure fit okay glue place Leave pinned down install top main spar Now fit glue eading edge making sure runs out past small tip rib used Super Jet cyanoacrylate glue Ca model makes good joint saves lot time point will notice shorter tip rib has gap between leading edge filled wing tip Take assembled tip cut file V fit leading edge Fit rear joins rear spar block up 9/16 scrap pieces glue wing Let glue dry thoroughly before removing panel board Glue balsa fillers leading edge tips both top bottom needed prevent sanding through final skin Repeat process other panel point remember no right left both wing panels finished mark cut out notches center section ribs accept plywood wing splices will make panels right left see main rib plan Cut out wing splices craft plywood will note -in splices go top -in splices bottom Both 25 40 engine installations snown muse pictures Interchangeable round radial mounts used Match mounting holes both mounts single set firewaliblind nuts can used Screw front wing holds tank access hatch place 26 Model Aviation Tall surfaces should carved/sanded symmetrical airfoil rather leaving blunt know authors interest early Fairchild aircraft thats source rudder shape perfect alignment surfaces predictable first trial flight will prototype needed minor trim transmitter its first flight FULL-SIZE PLANS AVAILABLE. SEE PAGE 164 .TWLEBPEE*BOTPSEE I~BP - l LEAOINSEII,I-__ - I ---0-,-PCBALSa SPOTSPOPESPICES ST/PBoooo / EESRE. OOL PAS154001MBSEE TEST I4BSRRET BOLTTAPER SPEllER TYPICASSEE TESTNOPCRES PATIOST BIBLE RIBSrIEW WILL LOOSE IPt BLSA SLOTSTOICf TO MATCH THE AREA AHAPOEL H5005THBPS SWIlL HE PSEABOTTRAAT-Sr I----PIB OLE - - I IRISE 2CAP/A SI/A BALSE C LOCATIONSHEAP SHAH-RE IORNNCIC ISIECTI_--_ OSEBSOPBAS SEC PEITILIILBLJlC~ ENTA AS-/HII-~io00NoTS--I___ __I PIA T BOISE K4ri5 yj7 -_2 _________________T oTn RETIRE MRPPEOSII PART HE WHOornco 50050U TLI___ I/O P11 SEP00 STOLESEPT11 CGOItRE ALL PORTS ARE HELSAOCTIISE5P/4HLIH NOTEp~4pNOTE MARK NOECS TO HOTTER LINESL. EORAEINS PECES PIE PLELECH LENS NOREE 050 TUSELASE STHENOTSENEH PIA HYANCE P/A PIT SPCRT PEWS RACER IIESISNEO OLPOWN R INIIERET bottom splices heavier take high loads rounding pylons very little dihedral fact little dihedral template isnt shown drawing because angle would imperceptible eye join two panels after ends root spars have trimmed sand root ribs bit top block up panel 3/16 dihedraL Fasten down panels glue top plywood splices set unfasten wing fit install bottom splices wing halves together about time build washout done installing 1/16 balsa skin proper manner First sand high spots framework Apply balsa skin bottom whole wing called plan will leave both wing panels very flexible Turn wing over top side up panel time block up rear spar 9/16-in scrap root 11/16-in scrap junction rear spar tip Fasten down blocked-up panel securely apply top balsa skin glue has dried panel will very rigid washout will set Repeat other paneL Note plan use model Novice Sportsman Aerobatics may want omit washout Remember washout becomes washin flying inverted Cut out balsa skin rear top center section Fit glue ood piece covers aileron connection Install ailerons shown plan Fuselage Cut out parts fasten 3/16 hard balsa rear bottom piece building board Glue ood landing gear saddle front equalizingthe3/16 side Glue -in triangular spruce long erons keeping flush sides bottom piece Glue bulkheads F-2 F-3 making sure truly vertical sides now glued area two bulkheads set bring rear sides using small tail post shown Install x a forming pieces center rear fuselage top -in triangular spruce longerons Make sure notch longerons front wing saddle installed later apply top rear turtle deck time rudder elevator controls will installed area open used cable Nyrod controls balsa forming pieces midway back glue crosspiece holes Nyrod pass through provide exit holes Nyrod side rear suitable height connect control horns Leave forward Nyrod ends bulkhead F-3 unbraced until servos installed Now glue top rear 3/16-in turtle deck can soft balsa Make mock-up stab vertical fin fillets rearward -in scrap Spot-glue together position final tail surfaces making sure finsimulated part lined up straight Shape turtle deck mock-up shown bulkhead F-3 section Y-Y rearward Remove mock-up save fairings fitted position later tail feathers installed leaves front fuselage assembled Glue together two pieces fire wall F-i Bring together sides thick Ca glue bottom F-i hold together short time takes dry use waxed paper protect fingers Fit glue -in triangular spruce longerons bottom sides same side pieces rear firewall F-I Fit install wing saddle-fuselage strengthener can held clamp-type clothespins very nicely glue sets Fit fasten other plywood pieces shown side view Cut out area tail wheel plywood mount install Build forward hatch glue tongue also shown side view Drill install wing holddown dowels landing gear motor mount blind nuts Tail surfaces made entirelyof light weight balsa sure dont get punky kind balsa will break cross-grain very easily want point out need carefully shaping tail surfaces airfoil shown plans Quite often see tail feathers model lightly rounded blunt leading trailing edges blunt edges nearly efficient good alrfoil usually cover surfaces install hinges before finally gluing fuselage After fastening tail surfaces model glue fairings part mock-up side vertical fin Covering good smooth covering job always begins sanding places otherwise would protrude through covering very careful sanding wing tips joints easy sand through rubbed Ambroid glue after sanding added strength used Continued page 121 September 1982 27 P/B EStERS AO CA HARE Hl GIANT SCALE & SPORT PLAN SETS NEW FOR 82 KITS order contains concise construction manual Partial kits include precut wing ribs fuselage farmers prebent landing gear cabana struts Full kits include everything above pluu strip wood necessary hardware assembled landing gear cabana struts fiberglass cowl wheelpants required wbo already have roy plan sets may deduct$IOOO frorothe prices tbe partial full kits listed below 1 B Special MK 3 Convertible 84 Monoplane 78 Biplane Weighs 18 lbs Low Wing & BiplanerPlansS2195 Either Partial Kit $9495 1. Full Kir Sf8495 Pleas $2795 00thPartial Kir $9498 1 Full Kir $79495 Travel Air 2000 108 Classic Scale Biplane Weighs 23 lbs Pleas $2295Partial Kit $8850Full Kit $19850 Travel Air 4000 88 Radial Engine Classic Biplane 23 lbs Plans $2299Partial Kit $9898Full Kit $79980 040 Kir $21400 Fokker DVII 88 German WWI Fighter Biplane 23 lbs Plans $2498Partial Kit 9995Full Kit $79895 WACO UPF7 80 Biplane 23 lbsPlans $2395 Soywith Tripehosed 80 WWI Tn 17 lbsPlansS2 795 Watch rhe ads Parasol version 8/Cs first 3 way convertible airplane Ordering information orders shipped UPS Parcel Post Please add $300 skipping plans $10 kits Make checks money orders payable Jerry Bebrens fastest service send Postal money order bank check Sorry no COD will accepted Send mail orders BEI4REN$ PLAN $ER VICE 3727 Healy Ace Far Rockaniar NV 17897Phone 1212 337-8887 Allow 4S weeks delivery Mr Spook III/Clapp Continued page 27 Super MonoKote covering film Balance Center balance lets call center gravity should shown plans racing better aerobatics Novice Sportsman Pattern balance point can bit farther aft sure balance wing after covered balsa same density used very seldom both sides same weight large wing built #10 common nail needed bring balance wing needs balancing drill small hole extreme tip nail glue Ca model perfect balance nose- tail-heavy may trimmed flight left way trying balance perfection Condition airCraft will trim velocity wasflying trimmed higher lower velocity amount pressure trimmed elevator will vary cause need excessive control stick man ipulation counteract course farther out balance aircraft elevator used trim worse condition becomes other forces can involved aircraft like Mr Spook III 0-0 incidence amount down thrust usedknowledge out-of-trim char acteristics can help get perfect balance longitudinally Lateral balance taken care primarily balancing wing Flying model has given pleasur able hours flying both Pylon Racing fun flying doesnt seem have bad traits ailerons either wing super-Sensitive first test flying plane would advise setting aileron throws minimum Rolls small wing much faster long wing because less area rotate Either way shows no tendency tip stall takeoff pulled up sharply can credited two degrees washout can brought landing three-point attitude way using little back pressure stick mini mizes usual extended glide flare-out Anyone aileron experience will feel ease flying Mr Spook III Propeller Tests diffcrent props OS 251SR witlt 15% nitro fuel props wood except noted Static tests conducted engine mounted Mr Spook Ill Prop 7-6 Top Flite racing 8-4 Zingor 8-5 Zinqer 8-6 Zinqer 8-6 Tornado nylon 8-7 Zingfir 8-8 Top Flite racing 9-4 Zinger 9-5 Zinger 9-6 Zinger 9-7 Zinger 9-7 Zinger rpm Lb Thrust 1650021/2 1650031/2 150003-1/8 140002Io 140002/4 135002/4 13000iv4 1350031/2 1350033/4 1200031/4 1000021/4 1400021/2 Taking account rpm will increase model moving through air flight because load prop lessen ing would seem wise select prop allows higher pitch used advantage increase rpm best combina tion pitch rpm diameter thrust seems 9-in-dia group 8-6 9-6 Zinger note 2000 rpm lost 9-6 thrust improved Continued page 124 rsTERLING MODELS Priced Right 82 Rea1 Sporty Kit FS38 Wingspan 40-5/16 Scale 2-118 ice $4595 Radio Control Control Line 1525 Engine Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line Free Flight Rubber Power PENNY PINCHER Wingspan 132 CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA ISO MUSTANGSABRE JET PIPER CUB T35 THUNDERBIRD p1 $198 EACH-For mail order auth orized Retailer send $198 Penny Pincher plus $100 minimum Shipping Add $150 kit Catalog Request Catalog entire line airplane control line model kits R/C scale & Trainer Kits boat model kits accessories etc $100 enclosed Secrets M6del Building & Con trol Line Book 50 1st Class mail delivery add $50 US & Canada Air Mail other countries add $165 Send STERLING MODELS 3620 C St Phila PA 19134 LN ame AddressState.... Zip September1982 121 Tiper VaEabond Its incredible heres Epoxy Point thats Pre-mbed can! O0VETE No pot life No mIxing 0 Fuelproof Light weight r tough a Flexible 420 Babylon Rd Horsham PA 19044 USA 213 kfi1A1LdtS I/OQJ0MR/C GOODIES CcQQantjPO BOX 192 -CA 91408U UHEAVY DUTYSPECIAL 825I 4-IN SANDERDELUXESYSTEM UAdjustable tableFlite wt 101 oz Miter guide4 Ch Complete 75g 10 metal Ix 4 RegSand discsServos SI 5$275NicadsChgr CH14Spec $2495Reg $27495 Ship $ 350Spec $15995 AIR CAPITALShip $ 650 ZINGER WOODReady-To-FlyFB 100 PROPS 6PockLess Radio EngineII 74-56 $5 2357 Span 8-4-5-65 63Ship SID rULLPWR9456 5 83 SERVO 3/4x 1 7/16 l0-4-5-6 6 39$65040-61 Engine1 x 19/16 1 381l-6775 720Reg $15995 Spec$139951 oz Dean s plugl24s69 65$2500 IReg $22 95 ISpec $13 95Other SizesSame Ship $250Discounts-Ship $200MOREI LtO~m$1 70 ~i~Add Calif Sales Tax 4-1/2% Surcharge Visa Master Cardj NE WJRIAT LAKES MODELMAHER & MOLD AMIA~ Deg Eogine POST OFFICE BOX 308THOMAS J MAHER TAWAS CITY MICHIGAN 48763Podct TELEPHONE 517 362-6078 COMPOSITE ANSTRUTION 1% SCALE 12rD3AI TYPE 99 VALT-6 SNJ HARVARD AICHIU 633/8 Span 45- 60 Power 708Span60- 90Power$18800 $22800 WE THINK YOU WILL AGREE THAT THEY ARE THE BEST NAWLLTD KITS YET FUSALAGE WINGS TAIL SURFACES WHITE EPOXY FINISH READY FOR PAINT & DETAILING EURATHANE FOAM RIGIDLY SUPPORTS EPOXY GELL COAT FIBERGLASS REINFORCED AT STRESS POINTS ONLY ASSEMBLY INSTALLATION OF EOUIPMENT & PAINTING REOLIIRED SCALE WHEELS INCLUDED NO NEED TO COVER WITH BALSA SHEET OR FILM SUPERIOR PRODUCT Whole Lot Left CLUBS CHECK OUT OUR SPECIAL INTRODUCTORY OFFER KITs 9 HL GLIDERSI0THSC4LE XCUMENTAWN DWGS 3SATELLITEKITSOFNOTABLEFAIRCHILDS 17 OLD TIME GAS-- rAIRCHIL FCI Send25for 5RUBBER3NORDICI 1980 catata 9 COMPETITION GASGEORGEHCLAPP FUEL affd DT TIMERS -$1075 eachCENTRAL SCU4RE FAl Model Supply --- N /3036 OX7TORRAECA10INfCV $100 -REFUNDED WITH ORDER lower rpm 9-6 leaves room Radio Technique/Myers increase rpm flight Continued page 30 Conclusion would like give credit good friend Ken Little did flying photography Ken modeler going back late 20s like myself also professional photographer decide build model both wings changeable engines will give several possible combinations long wing 25 engine quite docile short wing 40 engine. Have fun SAFE FLYING IS NO ACCIDENT properly balanced control throws set up controls harmonized word harmonized mean controls should set up have ability provide equal pitch roll yaw rates helps have dual-rate transmitter because can obtain control harmony its screwdriver adjustments next point aware makes difference Watson oriented respect airplane cant just stuff some empty space go fly units long axis must have particular position respect airplane Helicopter center line likewise cover Watson box must lie particular direction case found best results Watsons long axis leaned back about 100 being parallel Heli copter rotor shaft cover aligned fore-and-aft direction true because unit totally free responses lateral acceleraton nor its responses lateral accelerations equal directions have experiment bit get right Once have got right works very welL dont get right will think its defective did Larry Davidson flies RC Helicopter very well performance gusty wind noticably better Watson Stabilizer Does tell something like give product boost performs well Radio Shack Metal Detector 63-3001 appears lead photo reason Heres scene time Saturday afternoon three-day weekend sched uled testing Watson Stabilizer time 610 pnt just 10 minutes after Larry Davidson has closed hobby shop spare parts rye got mail column soon Post Oflice opens Tuesday rm out yard flying Heliboy place place making adjustments suddenly engine stops flight Fortunately rm flying low fast happens landing no problem walk over Heliboy discover needle valve has fallen outsomeplace lawn spent next hour hands knees looking piece brass inch long neigh bor asked know anyone metal detector said No Tim said Radio Shack sells about $40 said Heres $40 Get can Tim came back unit getting dark started learning find metaL found lot scraps aluminum foilprobably gifts rotary power mower Tim pretty clever cut piece brass tubing about inch long look unit adjusted could find tubing easily pretty sure needle valve would turn up did Weekend saved much three days flying worth deadline Now know anyone wants buy metal detector Lease Rent George M Myers 70 Froehlich Farm Rd Hicksvjlla NY 11801 Distance Record Hiner Continued page 33 noon no lift encountered Before second launch Dale Folkening took some pics crew Sailplane second launch 1203 pm light lift encountered took over two hours Pegasus cover first 25 miles early part flight characterized small fairly strong thermals cloud base Jack would keep Pegasus thermal let drift downwind until thermal died Only time would Jack fly straight down road until Pegasus ran next thermaL kept average speed down because ground speed due wind drift about 5 mph thermaling Pegasus much easier see under cloud thermal clear blue sky Between thermals Pegasus flying ground speed of25 30 mph aggressive flying style would result higher speed also greater chance premature landing last hour 18 minutes flight covered 30 miles thermals now very 124 Modet Aviation
Edition: Model Aviation - 1982/09
Page Numbers: 22, 23, 24, 25, 26, 27, 121, 124
George H ciapp NO OCR TEXT Can tell lathe short wing long wing views short wing right has slightly lower aspect ratioand has 25 engine vs 40 long-wing version main difference flight isthatthe long wing rolls slowly Note rubberbandsfor holding wing Author says can prevent much damage mishap compared rigid nylon bolt hold-down method Rounded wing tips aerodynamically clean Wheels angled ward slightly improved ground handling photos author shelved until sometime later 1979 club am Syracuse Thunder bird Aero Radio Society began season Sport Pylon Racing used 1936 Old-Timer design Torc published trainer Model Builder 19781 entered Novice get some experience rounding pylons third race came up Torc under repair airplane piece outgrowth Champ kit knew what wrong reasoned Friezetype ailerons solved same problem real aircraft during late 1920s would try something like leading edge Friezetype aileron projects below wing up position produce needed drag offset other down aileron wasnt time rebuild wing Frieze-type ailerons decided would modify existing ailerons equalize lateral drag did installing small inverted airfoils below aileron gap allow aifflow go between aileron went up leading edge small airfoil came down farther slipstream equalize aileron drag See July 1980 MA Letters Editor sketch system time test Mr Spook before next race added airfoils call collec tors worked very well roll rate fairly fast decreased incidence wing plane much faster regular Champ finished out 79 racing season bird everyone saw asked What gizmos below ailerons During next winter rebuilt try speed added 4 rear fuselage better ground control designed new wing symmetrical airfoil rounded 24 Model Aviation ailerons appear up bit wing root airfoil tipscaused washout recommended racing ru~gC shallow theres room everytning uenina T5flK ins foam-covered battery pack receiver foam packing servos on1/a ply tray Note cable-in-Nyrod control surfaces ,, fastened underside OP/s ply mount allowing ins servo within wing Note Du-Bro linkage top rear plywood center cover hard balsa web HEY CHUCK-HOWHES TAPEDHE ALSO WORKS FEET ON WHENDO YOUGET DONT BE DENSE COME THISANDI-4ETURNSTHE 5TICKAJD RUDDER TIME TODO THIS ThE CITATIONGOES GUY TALKS WITHTHROTTLE TOOPEDALS THOrYOU HAD ON AUTO -I GO ON p THE FAR OUT7 TOGIRDLE THE R/C DESIGN-OVER LSA FAIRING BLOCK/4 BALSA SHEET FOR ~TAILV ObETO iSTANBUL ANDBAOALL TAIL SURFACES -Us R/C TYPES DONTI/4x /4 SPRUCE TRIANGLEISANDED TO STREAMLINE ~~ SLEEPLII-EYOULAZY ,,ARTISTS ALONG FUSELAGE CORNERS DONTTHAT\pQ~CHEEZELEVATOR 4 PLYWOOD - oo AILERUN SERVOBUSHING TO GUIDE INTO C/S RIBSAILERON RODS BALSA FAIRING BLOCKFROM SERVOS 3/16 PLYVOD OVER I/4DOWEL V4 PLYVOOD HORN MOUT GOLDBERG BRACKET ON 3/16 PLYnOD BASE 3/IS HARD BALSA FUSELAGE TOP SIDES AND BOTTOM BALSA HATCHI/B X 1/4 FORMERS MID BODY ONLY 1/8 PLY TONGUE i/8 PL WCOD WING SADDLE UP TO FIREWAj 1/4 SQ BALSA REAR SPAR NOSE 8x 3/8 BALSA AILEROIJ T EDGE STOCK ENGINE SERVO 1/16 SHEET BAJ5A SKIN TOP AND BOTfl /8 X 7/16PLYWOD TOPF 3 SPAR SPLLE FRONT ANDSACKI/B PLGA/CflD I/4x 7/16 PLYWOD BOTTOMI/4HARD BALSA SPAR SPUCE FRONT AND BACK AP STRIPS 1/4 X 3/4x 3 4 PYVcGL G MOUNTTOP AND BOTTOM F 11/8SPRUCE510 6B 008 ALUMInUM BLANK3/6 K 3/B HARD3/16K 7/16 HARD BALSA SPARS TATONE MOUNTPLYWOOD DOL8LEDTRIANGLE i/~\-IORTEN TO 13BALSA L EDGEItP AND BOTTOM TO j I/4-2ONYUYJ SCREW INTO TNUThIN LIACOD2W ILLIAMS WHEELI/16SHEETBALSA L EDGETOPAND BOTTOMI/B BALSA RIBS SYTMETRICALAND ALL ALIKE tips Mr Spook II 15-500 class Enya 40 power flew 1980 racing season never could come close enough pylons going around get first great flier much too large heavy racer trimmed out too great angle-of-attack because its weight slowed down early spring 1981 designed entirely new Mr Spook III tried incorpo rate best two former aircraft first built very strong rubberband-mounted wing could slide ward event hard landing set out build tough craft also light wing mounted rubberbands may look nice mounted nylon bolts mishap shock-mounted wing can prevent lot damage occurring OS 25 Schnuerle engine hand decided build plane itwith shorter wing configuration meets AMA Sport Pylon rules minimum 450 sq 29now 450 35 shorter wing has 453 sq finished model time take Toledo hopes helping Sport Pylon cause us raced during last few years have found skill RC flying greatly improved Its too bad lot fliers feel arent good enough pilots try Sport Pylon Racing Its excellent entry point its tough may think Mr Spook IlL has evolved great flier whether flying Sport Pylon just sport plans 15-500 version 15% airfoil thickness 500 sq wing area removing bay wing panel have shorter wing suitable smaller engines flew short-wing version 1981 racing season OS 25 Schnuerle engine After racing season ended built longer 15-500 wing changed Enya 40 very little difference flight characteristics bigger wing except rolls bit slower competitive anything Sport Pylon Racing Construction Study plans read construction pointers plan change engines would suggest use Fox mount engine drilling both mounts same Fox mounts arent pre-drilled switch ing engines no problem plywood aircraft grade Select strong balsa strength needed lightweight balsa strength isnt needed Wing Build wing first will needed fit wing saddle fuselage Cut out ribs identical exception two tip ribs suggest making aluminum template guide cutting ribs Cut 3/16 x 7/16 hard balsa main spars bit long excess left root taper tip ends fit 3/16 sq notch smaller tip ribs Also cut bit long ard balsa rear spars i sq hard balsa leading edge Cut out parts 1 2 3 4 5 wing tips glue together over plan using waxed paper protect plan Let dry thor oughly Make wing panel time over plan flat building board Both right left panels same first because sym metrical airfoil Pin bottom main spar down securely Take 1/4 sq rear spar block up see drawing 9/16 scrap pieces Pin everything securely building board Try Out ribs make sure fit okay glue place Leave pinned down install top main spar Now fit glue eading edge making sure runs out past small tip rib used Super Jet cyanoacrylate glue Ca model makes good joint saves lot time point will notice shorter tip rib has gap between leading edge filled wing tip Take assembled tip cut file V fit leading edge Fit rear joins rear spar block up 9/16 scrap pieces glue wing Let glue dry thoroughly before removing panel board Glue balsa fillers leading edge tips both top bottom needed prevent sanding through final skin Repeat process other panel point remember no right left both wing panels finished mark cut out notches center section ribs accept plywood wing splices will make panels right left see main rib plan Cut out wing splices craft plywood will note -in splices go top -in splices bottom Both 25 40 engine installations snown muse pictures Interchangeable round radial mounts used Match mounting holes both mounts single set firewaliblind nuts can used Screw front wing holds tank access hatch place 26 Model Aviation Tall surfaces should carved/sanded symmetrical airfoil rather leaving blunt know authors interest early Fairchild aircraft thats source rudder shape perfect alignment surfaces predictable first trial flight will prototype needed minor trim transmitter its first flight FULL-SIZE PLANS AVAILABLE. SEE PAGE 164 .TWLEBPEE*BOTPSEE I~BP - l LEAOINSEII,I-__ - I ---0-,-PCBALSa SPOTSPOPESPICES ST/PBoooo / EESRE. OOL PAS154001MBSEE TEST I4BSRRET BOLTTAPER SPEllER TYPICASSEE TESTNOPCRES PATIOST BIBLE RIBSrIEW WILL LOOSE IPt BLSA SLOTSTOICf TO MATCH THE AREA AHAPOEL H5005THBPS SWIlL HE PSEABOTTRAAT-Sr I----PIB OLE - - I IRISE 2CAP/A SI/A BALSE C LOCATIONSHEAP SHAH-RE IORNNCIC ISIECTI_--_ OSEBSOPBAS SEC PEITILIILBLJlC~ ENTA AS-/HII-~io00NoTS--I___ __I PIA T BOISE K4ri5 yj7 -_2 _________________T oTn RETIRE MRPPEOSII PART HE WHOornco 50050U TLI___ I/O P11 SEP00 STOLESEPT11 CGOItRE ALL PORTS ARE HELSAOCTIISE5P/4HLIH NOTEp~4pNOTE MARK NOECS TO HOTTER LINESL. EORAEINS PECES PIE PLELECH LENS NOREE 050 TUSELASE STHENOTSENEH PIA HYANCE P/A PIT SPCRT PEWS RACER IIESISNEO OLPOWN R INIIERET bottom splices heavier take high loads rounding pylons very little dihedral fact little dihedral template isnt shown drawing because angle would imperceptible eye join two panels after ends root spars have trimmed sand root ribs bit top block up panel 3/16 dihedraL Fasten down panels glue top plywood splices set unfasten wing fit install bottom splices wing halves together about time build washout done installing 1/16 balsa skin proper manner First sand high spots framework Apply balsa skin bottom whole wing called plan will leave both wing panels very flexible Turn wing over top side up panel time block up rear spar 9/16-in scrap root 11/16-in scrap junction rear spar tip Fasten down blocked-up panel securely apply top balsa skin glue has dried panel will very rigid washout will set Repeat other paneL Note plan use model Novice Sportsman Aerobatics may want omit washout Remember washout becomes washin flying inverted Cut out balsa skin rear top center section Fit glue ood piece covers aileron connection Install ailerons shown plan Fuselage Cut out parts fasten 3/16 hard balsa rear bottom piece building board Glue ood landing gear saddle front equalizingthe3/16 side Glue -in triangular spruce long erons keeping flush sides bottom piece Glue bulkheads F-2 F-3 making sure truly vertical sides now glued area two bulkheads set bring rear sides using small tail post shown Install x a forming pieces center rear fuselage top -in triangular spruce longerons Make sure notch longerons front wing saddle installed later apply top rear turtle deck time rudder elevator controls will installed area open used cable Nyrod controls balsa forming pieces midway back glue crosspiece holes Nyrod pass through provide exit holes Nyrod side rear suitable height connect control horns Leave forward Nyrod ends bulkhead F-3 unbraced until servos installed Now glue top rear 3/16-in turtle deck can soft balsa Make mock-up stab vertical fin fillets rearward -in scrap Spot-glue together position final tail surfaces making sure finsimulated part lined up straight Shape turtle deck mock-up shown bulkhead F-3 section Y-Y rearward Remove mock-up save fairings fitted position later tail feathers installed leaves front fuselage assembled Glue together two pieces fire wall F-i Bring together sides thick Ca glue bottom F-i hold together short time takes dry use waxed paper protect fingers Fit glue -in triangular spruce longerons bottom sides same side pieces rear firewall F-I Fit install wing saddle-fuselage strengthener can held clamp-type clothespins very nicely glue sets Fit fasten other plywood pieces shown side view Cut out area tail wheel plywood mount install Build forward hatch glue tongue also shown side view Drill install wing holddown dowels landing gear motor mount blind nuts Tail surfaces made entirelyof light weight balsa sure dont get punky kind balsa will break cross-grain very easily want point out need carefully shaping tail surfaces airfoil shown plans Quite often see tail feathers model lightly rounded blunt leading trailing edges blunt edges nearly efficient good alrfoil usually cover surfaces install hinges before finally gluing fuselage After fastening tail surfaces model glue fairings part mock-up side vertical fin Covering good smooth covering job always begins sanding places otherwise would protrude through covering very careful sanding wing tips joints easy sand through rubbed Ambroid glue after sanding added strength used Continued page 121 September 1982 27 P/B EStERS AO CA HARE Hl GIANT SCALE & SPORT PLAN SETS NEW FOR 82 KITS order contains concise construction manual Partial kits include precut wing ribs fuselage farmers prebent landing gear cabana struts Full kits include everything above pluu strip wood necessary hardware assembled landing gear cabana struts fiberglass cowl wheelpants required wbo already have roy plan sets may deduct$IOOO frorothe prices tbe partial full kits listed below 1 B Special MK 3 Convertible 84 Monoplane 78 Biplane Weighs 18 lbs Low Wing & BiplanerPlansS2195 Either Partial Kit $9495 1. Full Kir Sf8495 Pleas $2795 00thPartial Kir $9498 1 Full Kir $79495 Travel Air 2000 108 Classic Scale Biplane Weighs 23 lbs Pleas $2295Partial Kit $8850Full Kit $19850 Travel Air 4000 88 Radial Engine Classic Biplane 23 lbs Plans $2299Partial Kit $9898Full Kit $79980 040 Kir $21400 Fokker DVII 88 German WWI Fighter Biplane 23 lbs Plans $2498Partial Kit 9995Full Kit $79895 WACO UPF7 80 Biplane 23 lbsPlans $2395 Soywith Tripehosed 80 WWI Tn 17 lbsPlansS2 795 Watch rhe ads Parasol version 8/Cs first 3 way convertible airplane Ordering information orders shipped UPS Parcel Post Please add $300 skipping plans $10 kits Make checks money orders payable Jerry Bebrens fastest service send Postal money order bank check Sorry no COD will accepted Send mail orders BEI4REN$ PLAN $ER VICE 3727 Healy Ace Far Rockaniar NV 17897Phone 1212 337-8887 Allow 4S weeks delivery Mr Spook III/Clapp Continued page 27 Super MonoKote covering film Balance Center balance lets call center gravity should shown plans racing better aerobatics Novice Sportsman Pattern balance point can bit farther aft sure balance wing after covered balsa same density used very seldom both sides same weight large wing built #10 common nail needed bring balance wing needs balancing drill small hole extreme tip nail glue Ca model perfect balance nose- tail-heavy may trimmed flight left way trying balance perfection Condition airCraft will trim velocity wasflying trimmed higher lower velocity amount pressure trimmed elevator will vary cause need excessive control stick man ipulation counteract course farther out balance aircraft elevator used trim worse condition becomes other forces can involved aircraft like Mr Spook III 0-0 incidence amount down thrust usedknowledge out-of-trim char acteristics can help get perfect balance longitudinally Lateral balance taken care primarily balancing wing Flying model has given pleasur able hours flying both Pylon Racing fun flying doesnt seem have bad traits ailerons either wing super-Sensitive first test flying plane would advise setting aileron throws minimum Rolls small wing much faster long wing because less area rotate Either way shows no tendency tip stall takeoff pulled up sharply can credited two degrees washout can brought landing three-point attitude way using little back pressure stick mini mizes usual extended glide flare-out Anyone aileron experience will feel ease flying Mr Spook III Propeller Tests diffcrent props OS 251SR witlt 15% nitro fuel props wood except noted Static tests conducted engine mounted Mr Spook Ill Prop 7-6 Top Flite racing 8-4 Zingor 8-5 Zinqer 8-6 Zinqer 8-6 Tornado nylon 8-7 Zingfir 8-8 Top Flite racing 9-4 Zinger 9-5 Zinger 9-6 Zinger 9-7 Zinger 9-7 Zinger rpm Lb Thrust 1650021/2 1650031/2 150003-1/8 140002Io 140002/4 135002/4 13000iv4 1350031/2 1350033/4 1200031/4 1000021/4 1400021/2 Taking account rpm will increase model moving through air flight because load prop lessen ing would seem wise select prop allows higher pitch used advantage increase rpm best combina tion pitch rpm diameter thrust seems 9-in-dia group 8-6 9-6 Zinger note 2000 rpm lost 9-6 thrust improved Continued page 124 rsTERLING MODELS Priced Right 82 Rea1 Sporty Kit FS38 Wingspan 40-5/16 Scale 2-118 ice $4595 Radio Control Control Line 1525 Engine Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line Free Flight Rubber Power PENNY PINCHER Wingspan 132 CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA ISO MUSTANGSABRE JET PIPER CUB T35 THUNDERBIRD p1 $198 EACH-For mail order auth orized Retailer send $198 Penny Pincher plus $100 minimum Shipping Add $150 kit Catalog Request Catalog entire line airplane control line model kits R/C scale & Trainer Kits boat model kits accessories etc $100 enclosed Secrets M6del Building & Con trol Line Book 50 1st Class mail delivery add $50 US & Canada Air Mail other countries add $165 Send STERLING MODELS 3620 C St Phila PA 19134 LN ame AddressState.... Zip September1982 121 Tiper VaEabond Its incredible heres Epoxy Point thats Pre-mbed can! O0VETE No pot life No mIxing 0 Fuelproof Light weight r tough a Flexible 420 Babylon Rd Horsham PA 19044 USA 213 kfi1A1LdtS I/OQJ0MR/C GOODIES CcQQantjPO BOX 192 -CA 91408U UHEAVY DUTYSPECIAL 825I 4-IN SANDERDELUXESYSTEM UAdjustable tableFlite wt 101 oz Miter guide4 Ch Complete 75g 10 metal Ix 4 RegSand discsServos SI 5$275NicadsChgr CH14Spec $2495Reg $27495 Ship $ 350Spec $15995 AIR CAPITALShip $ 650 ZINGER WOODReady-To-FlyFB 100 PROPS 6PockLess Radio EngineII 74-56 $5 2357 Span 8-4-5-65 63Ship SID rULLPWR9456 5 83 SERVO 3/4x 1 7/16 l0-4-5-6 6 39$65040-61 Engine1 x 19/16 1 381l-6775 720Reg $15995 Spec$139951 oz Dean s plugl24s69 65$2500 IReg $22 95 ISpec $13 95Other SizesSame Ship $250Discounts-Ship $200MOREI LtO~m$1 70 ~i~Add Calif Sales Tax 4-1/2% Surcharge Visa Master Cardj NE WJRIAT LAKES MODELMAHER & MOLD AMIA~ Deg Eogine POST OFFICE BOX 308THOMAS J MAHER TAWAS CITY MICHIGAN 48763Podct TELEPHONE 517 362-6078 COMPOSITE ANSTRUTION 1% SCALE 12rD3AI TYPE 99 VALT-6 SNJ HARVARD AICHIU 633/8 Span 45- 60 Power 708Span60- 90Power$18800 $22800 WE THINK YOU WILL AGREE THAT THEY ARE THE BEST NAWLLTD KITS YET FUSALAGE WINGS TAIL SURFACES WHITE EPOXY FINISH READY FOR PAINT & DETAILING EURATHANE FOAM RIGIDLY SUPPORTS EPOXY GELL COAT FIBERGLASS REINFORCED AT STRESS POINTS ONLY ASSEMBLY INSTALLATION OF EOUIPMENT & PAINTING REOLIIRED SCALE WHEELS INCLUDED NO NEED TO COVER WITH BALSA SHEET OR FILM SUPERIOR PRODUCT Whole Lot Left CLUBS CHECK OUT OUR SPECIAL INTRODUCTORY OFFER KITs 9 HL GLIDERSI0THSC4LE XCUMENTAWN DWGS 3SATELLITEKITSOFNOTABLEFAIRCHILDS 17 OLD TIME GAS-- rAIRCHIL FCI Send25for 5RUBBER3NORDICI 1980 catata 9 COMPETITION GASGEORGEHCLAPP FUEL affd DT TIMERS -$1075 eachCENTRAL SCU4RE FAl Model Supply --- N /3036 OX7TORRAECA10INfCV $100 -REFUNDED WITH ORDER lower rpm 9-6 leaves room Radio Technique/Myers increase rpm flight Continued page 30 Conclusion would like give credit good friend Ken Little did flying photography Ken modeler going back late 20s like myself also professional photographer decide build model both wings changeable engines will give several possible combinations long wing 25 engine quite docile short wing 40 engine. Have fun SAFE FLYING IS NO ACCIDENT properly balanced control throws set up controls harmonized word harmonized mean controls should set up have ability provide equal pitch roll yaw rates helps have dual-rate transmitter because can obtain control harmony its screwdriver adjustments next point aware makes difference Watson oriented respect airplane cant just stuff some empty space go fly units long axis must have particular position respect airplane Helicopter center line likewise cover Watson box must lie particular direction case found best results Watsons long axis leaned back about 100 being parallel Heli copter rotor shaft cover aligned fore-and-aft direction true because unit totally free responses lateral acceleraton nor its responses lateral accelerations equal directions have experiment bit get right Once have got right works very welL dont get right will think its defective did Larry Davidson flies RC Helicopter very well performance gusty wind noticably better Watson Stabilizer Does tell something like give product boost performs well Radio Shack Metal Detector 63-3001 appears lead photo reason Heres scene time Saturday afternoon three-day weekend sched uled testing Watson Stabilizer time 610 pnt just 10 minutes after Larry Davidson has closed hobby shop spare parts rye got mail column soon Post Oflice opens Tuesday rm out yard flying Heliboy place place making adjustments suddenly engine stops flight Fortunately rm flying low fast happens landing no problem walk over Heliboy discover needle valve has fallen outsomeplace lawn spent next hour hands knees looking piece brass inch long neigh bor asked know anyone metal detector said No Tim said Radio Shack sells about $40 said Heres $40 Get can Tim came back unit getting dark started learning find metaL found lot scraps aluminum foilprobably gifts rotary power mower Tim pretty clever cut piece brass tubing about inch long look unit adjusted could find tubing easily pretty sure needle valve would turn up did Weekend saved much three days flying worth deadline Now know anyone wants buy metal detector Lease Rent George M Myers 70 Froehlich Farm Rd Hicksvjlla NY 11801 Distance Record Hiner Continued page 33 noon no lift encountered Before second launch Dale Folkening took some pics crew Sailplane second launch 1203 pm light lift encountered took over two hours Pegasus cover first 25 miles early part flight characterized small fairly strong thermals cloud base Jack would keep Pegasus thermal let drift downwind until thermal died Only time would Jack fly straight down road until Pegasus ran next thermaL kept average speed down because ground speed due wind drift about 5 mph thermaling Pegasus much easier see under cloud thermal clear blue sky Between thermals Pegasus flying ground speed of25 30 mph aggressive flying style would result higher speed also greater chance premature landing last hour 18 minutes flight covered 30 miles thermals now very 124 Modet Aviation
Edition: Model Aviation - 1982/09
Page Numbers: 22, 23, 24, 25, 26, 27, 121, 124
George H ciapp NO OCR TEXT Can tell lathe short wing long wing views short wing right has slightly lower aspect ratioand has 25 engine vs 40 long-wing version main difference flight isthatthe long wing rolls slowly Note rubberbandsfor holding wing Author says can prevent much damage mishap compared rigid nylon bolt hold-down method Rounded wing tips aerodynamically clean Wheels angled ward slightly improved ground handling photos author shelved until sometime later 1979 club am Syracuse Thunder bird Aero Radio Society began season Sport Pylon Racing used 1936 Old-Timer design Torc published trainer Model Builder 19781 entered Novice get some experience rounding pylons third race came up Torc under repair airplane piece outgrowth Champ kit knew what wrong reasoned Friezetype ailerons solved same problem real aircraft during late 1920s would try something like leading edge Friezetype aileron projects below wing up position produce needed drag offset other down aileron wasnt time rebuild wing Frieze-type ailerons decided would modify existing ailerons equalize lateral drag did installing small inverted airfoils below aileron gap allow aifflow go between aileron went up leading edge small airfoil came down farther slipstream equalize aileron drag See July 1980 MA Letters Editor sketch system time test Mr Spook before next race added airfoils call collec tors worked very well roll rate fairly fast decreased incidence wing plane much faster regular Champ finished out 79 racing season bird everyone saw asked What gizmos below ailerons During next winter rebuilt try speed added 4 rear fuselage better ground control designed new wing symmetrical airfoil rounded 24 Model Aviation ailerons appear up bit wing root airfoil tipscaused washout recommended racing ru~gC shallow theres room everytning uenina T5flK ins foam-covered battery pack receiver foam packing servos on1/a ply tray Note cable-in-Nyrod control surfaces ,, fastened underside OP/s ply mount allowing ins servo within wing Note Du-Bro linkage top rear plywood center cover hard balsa web HEY CHUCK-HOWHES TAPEDHE ALSO WORKS FEET ON WHENDO YOUGET DONT BE DENSE COME THISANDI-4ETURNSTHE 5TICKAJD RUDDER TIME TODO THIS ThE CITATIONGOES GUY TALKS WITHTHROTTLE TOOPEDALS THOrYOU HAD ON AUTO -I GO ON p THE FAR OUT7 TOGIRDLE THE R/C DESIGN-OVER LSA FAIRING BLOCK/4 BALSA SHEET FOR ~TAILV ObETO iSTANBUL ANDBAOALL TAIL SURFACES -Us R/C TYPES DONTI/4x /4 SPRUCE TRIANGLEISANDED TO STREAMLINE ~~ SLEEPLII-EYOULAZY ,,ARTISTS ALONG FUSELAGE CORNERS DONTTHAT\pQ~CHEEZELEVATOR 4 PLYWOOD - oo AILERUN SERVOBUSHING TO GUIDE INTO C/S RIBSAILERON RODS BALSA FAIRING BLOCKFROM SERVOS 3/16 PLYVOD OVER I/4DOWEL V4 PLYVOOD HORN MOUT GOLDBERG BRACKET ON 3/16 PLYnOD BASE 3/IS HARD BALSA FUSELAGE TOP SIDES AND BOTTOM BALSA HATCHI/B X 1/4 FORMERS MID BODY ONLY 1/8 PLY TONGUE i/8 PL WCOD WING SADDLE UP TO FIREWAj 1/4 SQ BALSA REAR SPAR NOSE 8x 3/8 BALSA AILEROIJ T EDGE STOCK ENGINE SERVO 1/16 SHEET BAJ5A SKIN TOP AND BOTfl /8 X 7/16PLYWOD TOPF 3 SPAR SPLLE FRONT ANDSACKI/B PLGA/CflD I/4x 7/16 PLYWOD BOTTOMI/4HARD BALSA SPAR SPUCE FRONT AND BACK AP STRIPS 1/4 X 3/4x 3 4 PYVcGL G MOUNTTOP AND BOTTOM F 11/8SPRUCE510 6B 008 ALUMInUM BLANK3/6 K 3/B HARD3/16K 7/16 HARD BALSA SPARS TATONE MOUNTPLYWOOD DOL8LEDTRIANGLE i/~\-IORTEN TO 13BALSA L EDGEItP AND BOTTOM TO j I/4-2ONYUYJ SCREW INTO TNUThIN LIACOD2W ILLIAMS WHEELI/16SHEETBALSA L EDGETOPAND BOTTOMI/B BALSA RIBS SYTMETRICALAND ALL ALIKE tips Mr Spook II 15-500 class Enya 40 power flew 1980 racing season never could come close enough pylons going around get first great flier much too large heavy racer trimmed out too great angle-of-attack because its weight slowed down early spring 1981 designed entirely new Mr Spook III tried incorpo rate best two former aircraft first built very strong rubberband-mounted wing could slide ward event hard landing set out build tough craft also light wing mounted rubberbands may look nice mounted nylon bolts mishap shock-mounted wing can prevent lot damage occurring OS 25 Schnuerle engine hand decided build plane itwith shorter wing configuration meets AMA Sport Pylon rules minimum 450 sq 29now 450 35 shorter wing has 453 sq finished model time take Toledo hopes helping Sport Pylon cause us raced during last few years have found skill RC flying greatly improved Its too bad lot fliers feel arent good enough pilots try Sport Pylon Racing Its excellent entry point its tough may think Mr Spook IlL has evolved great flier whether flying Sport Pylon just sport plans 15-500 version 15% airfoil thickness 500 sq wing area removing bay wing panel have shorter wing suitable smaller engines flew short-wing version 1981 racing season OS 25 Schnuerle engine After racing season ended built longer 15-500 wing changed Enya 40 very little difference flight characteristics bigger wing except rolls bit slower competitive anything Sport Pylon Racing Construction Study plans read construction pointers plan change engines would suggest use Fox mount engine drilling both mounts same Fox mounts arent pre-drilled switch ing engines no problem plywood aircraft grade Select strong balsa strength needed lightweight balsa strength isnt needed Wing Build wing first will needed fit wing saddle fuselage Cut out ribs identical exception two tip ribs suggest making aluminum template guide cutting ribs Cut 3/16 x 7/16 hard balsa main spars bit long excess left root taper tip ends fit 3/16 sq notch smaller tip ribs Also cut bit long ard balsa rear spars i sq hard balsa leading edge Cut out parts 1 2 3 4 5 wing tips glue together over plan using waxed paper protect plan Let dry thor oughly Make wing panel time over plan flat building board Both right left panels same first because sym metrical airfoil Pin bottom main spar down securely Take 1/4 sq rear spar block up see drawing 9/16 scrap pieces Pin everything securely building board Try Out ribs make sure fit okay glue place Leave pinned down install top main spar Now fit glue eading edge making sure runs out past small tip rib used Super Jet cyanoacrylate glue Ca model makes good joint saves lot time point will notice shorter tip rib has gap between leading edge filled wing tip Take assembled tip cut file V fit leading edge Fit rear joins rear spar block up 9/16 scrap pieces glue wing Let glue dry thoroughly before removing panel board Glue balsa fillers leading edge tips both top bottom needed prevent sanding through final skin Repeat process other panel point remember no right left both wing panels finished mark cut out notches center section ribs accept plywood wing splices will make panels right left see main rib plan Cut out wing splices craft plywood will note -in splices go top -in splices bottom Both 25 40 engine installations snown muse pictures Interchangeable round radial mounts used Match mounting holes both mounts single set firewaliblind nuts can used Screw front wing holds tank access hatch place 26 Model Aviation Tall surfaces should carved/sanded symmetrical airfoil rather leaving blunt know authors interest early Fairchild aircraft thats source rudder shape perfect alignment surfaces predictable first trial flight will prototype needed minor trim transmitter its first flight FULL-SIZE PLANS AVAILABLE. SEE PAGE 164 .TWLEBPEE*BOTPSEE I~BP - l LEAOINSEII,I-__ - I ---0-,-PCBALSa SPOTSPOPESPICES ST/PBoooo / EESRE. OOL PAS154001MBSEE TEST I4BSRRET BOLTTAPER SPEllER TYPICASSEE TESTNOPCRES PATIOST BIBLE RIBSrIEW WILL LOOSE IPt BLSA SLOTSTOICf TO MATCH THE AREA AHAPOEL H5005THBPS SWIlL HE PSEABOTTRAAT-Sr I----PIB OLE - - I IRISE 2CAP/A SI/A BALSE C LOCATIONSHEAP SHAH-RE IORNNCIC ISIECTI_--_ OSEBSOPBAS SEC PEITILIILBLJlC~ ENTA AS-/HII-~io00NoTS--I___ __I PIA T BOISE K4ri5 yj7 -_2 _________________T oTn RETIRE MRPPEOSII PART HE WHOornco 50050U TLI___ I/O P11 SEP00 STOLESEPT11 CGOItRE ALL PORTS ARE HELSAOCTIISE5P/4HLIH NOTEp~4pNOTE MARK NOECS TO HOTTER LINESL. EORAEINS PECES PIE PLELECH LENS NOREE 050 TUSELASE STHENOTSENEH PIA HYANCE P/A PIT SPCRT PEWS RACER IIESISNEO OLPOWN R INIIERET bottom splices heavier take high loads rounding pylons very little dihedral fact little dihedral template isnt shown drawing because angle would imperceptible eye join two panels after ends root spars have trimmed sand root ribs bit top block up panel 3/16 dihedraL Fasten down panels glue top plywood splices set unfasten wing fit install bottom splices wing halves together about time build washout done installing 1/16 balsa skin proper manner First sand high spots framework Apply balsa skin bottom whole wing called plan will leave both wing panels very flexible Turn wing over top side up panel time block up rear spar 9/16-in scrap root 11/16-in scrap junction rear spar tip Fasten down blocked-up panel securely apply top balsa skin glue has dried panel will very rigid washout will set Repeat other paneL Note plan use model Novice Sportsman Aerobatics may want omit washout Remember washout becomes washin flying inverted Cut out balsa skin rear top center section Fit glue ood piece covers aileron connection Install ailerons shown plan Fuselage Cut out parts fasten 3/16 hard balsa rear bottom piece building board Glue ood landing gear saddle front equalizingthe3/16 side Glue -in triangular spruce long erons keeping flush sides bottom piece Glue bulkheads F-2 F-3 making sure truly vertical sides now glued area two bulkheads set bring rear sides using small tail post shown Install x a forming pieces center rear fuselage top -in triangular spruce longerons Make sure notch longerons front wing saddle installed later apply top rear turtle deck time rudder elevator controls will installed area open used cable Nyrod controls balsa forming pieces midway back glue crosspiece holes Nyrod pass through provide exit holes Nyrod side rear suitable height connect control horns Leave forward Nyrod ends bulkhead F-3 unbraced until servos installed Now glue top rear 3/16-in turtle deck can soft balsa Make mock-up stab vertical fin fillets rearward -in scrap Spot-glue together position final tail surfaces making sure finsimulated part lined up straight Shape turtle deck mock-up shown bulkhead F-3 section Y-Y rearward Remove mock-up save fairings fitted position later tail feathers installed leaves front fuselage assembled Glue together two pieces fire wall F-i Bring together sides thick Ca glue bottom F-i hold together short time takes dry use waxed paper protect fingers Fit glue -in triangular spruce longerons bottom sides same side pieces rear firewall F-I Fit install wing saddle-fuselage strengthener can held clamp-type clothespins very nicely glue sets Fit fasten other plywood pieces shown side view Cut out area tail wheel plywood mount install Build forward hatch glue tongue also shown side view Drill install wing holddown dowels landing gear motor mount blind nuts Tail surfaces made entirelyof light weight balsa sure dont get punky kind balsa will break cross-grain very easily want point out need carefully shaping tail surfaces airfoil shown plans Quite often see tail feathers model lightly rounded blunt leading trailing edges blunt edges nearly efficient good alrfoil usually cover surfaces install hinges before finally gluing fuselage After fastening tail surfaces model glue fairings part mock-up side vertical fin Covering good smooth covering job always begins sanding places otherwise would protrude through covering very careful sanding wing tips joints easy sand through rubbed Ambroid glue after sanding added strength used Continued page 121 September 1982 27 P/B EStERS AO CA HARE Hl GIANT SCALE & SPORT PLAN SETS NEW FOR 82 KITS order contains concise construction manual Partial kits include precut wing ribs fuselage farmers prebent landing gear cabana struts Full kits include everything above pluu strip wood necessary hardware assembled landing gear cabana struts fiberglass cowl wheelpants required wbo already have roy plan sets may deduct$IOOO frorothe prices tbe partial full kits listed below 1 B Special MK 3 Convertible 84 Monoplane 78 Biplane Weighs 18 lbs Low Wing & BiplanerPlansS2195 Either Partial Kit $9495 1. Full Kir Sf8495 Pleas $2795 00thPartial Kir $9498 1 Full Kir $79495 Travel Air 2000 108 Classic Scale Biplane Weighs 23 lbs Pleas $2295Partial Kit $8850Full Kit $19850 Travel Air 4000 88 Radial Engine Classic Biplane 23 lbs Plans $2299Partial Kit $9898Full Kit $79980 040 Kir $21400 Fokker DVII 88 German WWI Fighter Biplane 23 lbs Plans $2498Partial Kit 9995Full Kit $79895 WACO UPF7 80 Biplane 23 lbsPlans $2395 Soywith Tripehosed 80 WWI Tn 17 lbsPlansS2 795 Watch rhe ads Parasol version 8/Cs first 3 way convertible airplane Ordering information orders shipped UPS Parcel Post Please add $300 skipping plans $10 kits Make checks money orders payable Jerry Bebrens fastest service send Postal money order bank check Sorry no COD will accepted Send mail orders BEI4REN$ PLAN $ER VICE 3727 Healy Ace Far Rockaniar NV 17897Phone 1212 337-8887 Allow 4S weeks delivery Mr Spook III/Clapp Continued page 27 Super MonoKote covering film Balance Center balance lets call center gravity should shown plans racing better aerobatics Novice Sportsman Pattern balance point can bit farther aft sure balance wing after covered balsa same density used very seldom both sides same weight large wing built #10 common nail needed bring balance wing needs balancing drill small hole extreme tip nail glue Ca model perfect balance nose- tail-heavy may trimmed flight left way trying balance perfection Condition airCraft will trim velocity wasflying trimmed higher lower velocity amount pressure trimmed elevator will vary cause need excessive control stick man ipulation counteract course farther out balance aircraft elevator used trim worse condition becomes other forces can involved aircraft like Mr Spook III 0-0 incidence amount down thrust usedknowledge out-of-trim char acteristics can help get perfect balance longitudinally Lateral balance taken care primarily balancing wing Flying model has given pleasur able hours flying both Pylon Racing fun flying doesnt seem have bad traits ailerons either wing super-Sensitive first test flying plane would advise setting aileron throws minimum Rolls small wing much faster long wing because less area rotate Either way shows no tendency tip stall takeoff pulled up sharply can credited two degrees washout can brought landing three-point attitude way using little back pressure stick mini mizes usual extended glide flare-out Anyone aileron experience will feel ease flying Mr Spook III Propeller Tests diffcrent props OS 251SR witlt 15% nitro fuel props wood except noted Static tests conducted engine mounted Mr Spook Ill Prop 7-6 Top Flite racing 8-4 Zingor 8-5 Zinqer 8-6 Zinqer 8-6 Tornado nylon 8-7 Zingfir 8-8 Top Flite racing 9-4 Zinger 9-5 Zinger 9-6 Zinger 9-7 Zinger 9-7 Zinger rpm Lb Thrust 1650021/2 1650031/2 150003-1/8 140002Io 140002/4 135002/4 13000iv4 1350031/2 1350033/4 1200031/4 1000021/4 1400021/2 Taking account rpm will increase model moving through air flight because load prop lessen ing would seem wise select prop allows higher pitch used advantage increase rpm best combina tion pitch rpm diameter thrust seems 9-in-dia group 8-6 9-6 Zinger note 2000 rpm lost 9-6 thrust improved Continued page 124 rsTERLING MODELS Priced Right 82 Rea1 Sporty Kit FS38 Wingspan 40-5/16 Scale 2-118 ice $4595 Radio Control Control Line 1525 Engine Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line Free Flight Rubber Power PENNY PINCHER Wingspan 132 CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA ISO MUSTANGSABRE JET PIPER CUB T35 THUNDERBIRD p1 $198 EACH-For mail order auth orized Retailer send $198 Penny Pincher plus $100 minimum Shipping Add $150 kit Catalog Request Catalog entire line airplane control line model kits R/C scale & Trainer Kits boat model kits accessories etc $100 enclosed Secrets M6del Building & Con trol Line Book 50 1st Class mail delivery add $50 US & Canada Air Mail other countries add $165 Send STERLING MODELS 3620 C St Phila PA 19134 LN ame AddressState.... Zip September1982 121 Tiper VaEabond Its incredible heres Epoxy Point thats Pre-mbed can! O0VETE No pot life No mIxing 0 Fuelproof Light weight r tough a Flexible 420 Babylon Rd Horsham PA 19044 USA 213 kfi1A1LdtS I/OQJ0MR/C GOODIES CcQQantjPO BOX 192 -CA 91408U UHEAVY DUTYSPECIAL 825I 4-IN SANDERDELUXESYSTEM UAdjustable tableFlite wt 101 oz Miter guide4 Ch Complete 75g 10 metal Ix 4 RegSand discsServos SI 5$275NicadsChgr CH14Spec $2495Reg $27495 Ship $ 350Spec $15995 AIR CAPITALShip $ 650 ZINGER WOODReady-To-FlyFB 100 PROPS 6PockLess Radio EngineII 74-56 $5 2357 Span 8-4-5-65 63Ship SID rULLPWR9456 5 83 SERVO 3/4x 1 7/16 l0-4-5-6 6 39$65040-61 Engine1 x 19/16 1 381l-6775 720Reg $15995 Spec$139951 oz Dean s plugl24s69 65$2500 IReg $22 95 ISpec $13 95Other SizesSame Ship $250Discounts-Ship $200MOREI LtO~m$1 70 ~i~Add Calif Sales Tax 4-1/2% Surcharge Visa Master Cardj NE WJRIAT LAKES MODELMAHER & MOLD AMIA~ Deg Eogine POST OFFICE BOX 308THOMAS J MAHER TAWAS CITY MICHIGAN 48763Podct TELEPHONE 517 362-6078 COMPOSITE ANSTRUTION 1% SCALE 12rD3AI TYPE 99 VALT-6 SNJ HARVARD AICHIU 633/8 Span 45- 60 Power 708Span60- 90Power$18800 $22800 WE THINK YOU WILL AGREE THAT THEY ARE THE BEST NAWLLTD KITS YET FUSALAGE WINGS TAIL SURFACES WHITE EPOXY FINISH READY FOR PAINT & DETAILING EURATHANE FOAM RIGIDLY SUPPORTS EPOXY GELL COAT FIBERGLASS REINFORCED AT STRESS POINTS ONLY ASSEMBLY INSTALLATION OF EOUIPMENT & PAINTING REOLIIRED SCALE WHEELS INCLUDED NO NEED TO COVER WITH BALSA SHEET OR FILM SUPERIOR PRODUCT Whole Lot Left CLUBS CHECK OUT OUR SPECIAL INTRODUCTORY OFFER KITs 9 HL GLIDERSI0THSC4LE XCUMENTAWN DWGS 3SATELLITEKITSOFNOTABLEFAIRCHILDS 17 OLD TIME GAS-- rAIRCHIL FCI Send25for 5RUBBER3NORDICI 1980 catata 9 COMPETITION GASGEORGEHCLAPP FUEL affd DT TIMERS -$1075 eachCENTRAL SCU4RE FAl Model Supply --- N /3036 OX7TORRAECA10INfCV $100 -REFUNDED WITH ORDER lower rpm 9-6 leaves room Radio Technique/Myers increase rpm flight Continued page 30 Conclusion would like give credit good friend Ken Little did flying photography Ken modeler going back late 20s like myself also professional photographer decide build model both wings changeable engines will give several possible combinations long wing 25 engine quite docile short wing 40 engine. Have fun SAFE FLYING IS NO ACCIDENT properly balanced control throws set up controls harmonized word harmonized mean controls should set up have ability provide equal pitch roll yaw rates helps have dual-rate transmitter because can obtain control harmony its screwdriver adjustments next point aware makes difference Watson oriented respect airplane cant just stuff some empty space go fly units long axis must have particular position respect airplane Helicopter center line likewise cover Watson box must lie particular direction case found best results Watsons long axis leaned back about 100 being parallel Heli copter rotor shaft cover aligned fore-and-aft direction true because unit totally free responses lateral acceleraton nor its responses lateral accelerations equal directions have experiment bit get right Once have got right works very welL dont get right will think its defective did Larry Davidson flies RC Helicopter very well performance gusty wind noticably better Watson Stabilizer Does tell something like give product boost performs well Radio Shack Metal Detector 63-3001 appears lead photo reason Heres scene time Saturday afternoon three-day weekend sched uled testing Watson Stabilizer time 610 pnt just 10 minutes after Larry Davidson has closed hobby shop spare parts rye got mail column soon Post Oflice opens Tuesday rm out yard flying Heliboy place place making adjustments suddenly engine stops flight Fortunately rm flying low fast happens landing no problem walk over Heliboy discover needle valve has fallen outsomeplace lawn spent next hour hands knees looking piece brass inch long neigh bor asked know anyone metal detector said No Tim said Radio Shack sells about $40 said Heres $40 Get can Tim came back unit getting dark started learning find metaL found lot scraps aluminum foilprobably gifts rotary power mower Tim pretty clever cut piece brass tubing about inch long look unit adjusted could find tubing easily pretty sure needle valve would turn up did Weekend saved much three days flying worth deadline Now know anyone wants buy metal detector Lease Rent George M Myers 70 Froehlich Farm Rd Hicksvjlla NY 11801 Distance Record Hiner Continued page 33 noon no lift encountered Before second launch Dale Folkening took some pics crew Sailplane second launch 1203 pm light lift encountered took over two hours Pegasus cover first 25 miles early part flight characterized small fairly strong thermals cloud base Jack would keep Pegasus thermal let drift downwind until thermal died Only time would Jack fly straight down road until Pegasus ran next thermaL kept average speed down because ground speed due wind drift about 5 mph thermaling Pegasus much easier see under cloud thermal clear blue sky Between thermals Pegasus flying ground speed of25 30 mph aggressive flying style would result higher speed also greater chance premature landing last hour 18 minutes flight covered 30 miles thermals now very 124 Modet Aviation
Edition: Model Aviation - 1982/09
Page Numbers: 22, 23, 24, 25, 26, 27, 121, 124
George H ciapp NO OCR TEXT Can tell lathe short wing long wing views short wing right has slightly lower aspect ratioand has 25 engine vs 40 long-wing version main difference flight isthatthe long wing rolls slowly Note rubberbandsfor holding wing Author says can prevent much damage mishap compared rigid nylon bolt hold-down method Rounded wing tips aerodynamically clean Wheels angled ward slightly improved ground handling photos author shelved until sometime later 1979 club am Syracuse Thunder bird Aero Radio Society began season Sport Pylon Racing used 1936 Old-Timer design Torc published trainer Model Builder 19781 entered Novice get some experience rounding pylons third race came up Torc under repair airplane piece outgrowth Champ kit knew what wrong reasoned Friezetype ailerons solved same problem real aircraft during late 1920s would try something like leading edge Friezetype aileron projects below wing up position produce needed drag offset other down aileron wasnt time rebuild wing Frieze-type ailerons decided would modify existing ailerons equalize lateral drag did installing small inverted airfoils below aileron gap allow aifflow go between aileron went up leading edge small airfoil came down farther slipstream equalize aileron drag See July 1980 MA Letters Editor sketch system time test Mr Spook before next race added airfoils call collec tors worked very well roll rate fairly fast decreased incidence wing plane much faster regular Champ finished out 79 racing season bird everyone saw asked What gizmos below ailerons During next winter rebuilt try speed added 4 rear fuselage better ground control designed new wing symmetrical airfoil rounded 24 Model Aviation ailerons appear up bit wing root airfoil tipscaused washout recommended racing ru~gC shallow theres room everytning uenina T5flK ins foam-covered battery pack receiver foam packing servos on1/a ply tray Note cable-in-Nyrod control surfaces ,, fastened underside OP/s ply mount allowing ins servo within wing Note Du-Bro linkage top rear plywood center cover hard balsa web HEY CHUCK-HOWHES TAPEDHE ALSO WORKS FEET ON WHENDO YOUGET DONT BE DENSE COME THISANDI-4ETURNSTHE 5TICKAJD RUDDER TIME TODO THIS ThE CITATIONGOES GUY TALKS WITHTHROTTLE TOOPEDALS THOrYOU HAD ON AUTO -I GO ON p THE FAR OUT7 TOGIRDLE THE R/C DESIGN-OVER LSA FAIRING BLOCK/4 BALSA SHEET FOR ~TAILV ObETO iSTANBUL ANDBAOALL TAIL SURFACES -Us R/C TYPES DONTI/4x /4 SPRUCE TRIANGLEISANDED TO STREAMLINE ~~ SLEEPLII-EYOULAZY ,,ARTISTS ALONG FUSELAGE CORNERS DONTTHAT\pQ~CHEEZELEVATOR 4 PLYWOOD - oo AILERUN SERVOBUSHING TO GUIDE INTO C/S RIBSAILERON RODS BALSA FAIRING BLOCKFROM SERVOS 3/16 PLYVOD OVER I/4DOWEL V4 PLYVOOD HORN MOUT GOLDBERG BRACKET ON 3/16 PLYnOD BASE 3/IS HARD BALSA FUSELAGE TOP SIDES AND BOTTOM BALSA HATCHI/B X 1/4 FORMERS MID BODY ONLY 1/8 PLY TONGUE i/8 PL WCOD WING SADDLE UP TO FIREWAj 1/4 SQ BALSA REAR SPAR NOSE 8x 3/8 BALSA AILEROIJ T EDGE STOCK ENGINE SERVO 1/16 SHEET BAJ5A SKIN TOP AND BOTfl /8 X 7/16PLYWOD TOPF 3 SPAR SPLLE FRONT ANDSACKI/B PLGA/CflD I/4x 7/16 PLYWOD BOTTOMI/4HARD BALSA SPAR SPUCE FRONT AND BACK AP STRIPS 1/4 X 3/4x 3 4 PYVcGL G MOUNTTOP AND BOTTOM F 11/8SPRUCE510 6B 008 ALUMInUM BLANK3/6 K 3/B HARD3/16K 7/16 HARD BALSA SPARS TATONE MOUNTPLYWOOD DOL8LEDTRIANGLE i/~\-IORTEN TO 13BALSA L EDGEItP AND BOTTOM TO j I/4-2ONYUYJ SCREW INTO TNUThIN LIACOD2W ILLIAMS WHEELI/16SHEETBALSA L EDGETOPAND BOTTOMI/B BALSA RIBS SYTMETRICALAND ALL ALIKE tips Mr Spook II 15-500 class Enya 40 power flew 1980 racing season never could come close enough pylons going around get first great flier much too large heavy racer trimmed out too great angle-of-attack because its weight slowed down early spring 1981 designed entirely new Mr Spook III tried incorpo rate best two former aircraft first built very strong rubberband-mounted wing could slide ward event hard landing set out build tough craft also light wing mounted rubberbands may look nice mounted nylon bolts mishap shock-mounted wing can prevent lot damage occurring OS 25 Schnuerle engine hand decided build plane itwith shorter wing configuration meets AMA Sport Pylon rules minimum 450 sq 29now 450 35 shorter wing has 453 sq finished model time take Toledo hopes helping Sport Pylon cause us raced during last few years have found skill RC flying greatly improved Its too bad lot fliers feel arent good enough pilots try Sport Pylon Racing Its excellent entry point its tough may think Mr Spook IlL has evolved great flier whether flying Sport Pylon just sport plans 15-500 version 15% airfoil thickness 500 sq wing area removing bay wing panel have shorter wing suitable smaller engines flew short-wing version 1981 racing season OS 25 Schnuerle engine After racing season ended built longer 15-500 wing changed Enya 40 very little difference flight characteristics bigger wing except rolls bit slower competitive anything Sport Pylon Racing Construction Study plans read construction pointers plan change engines would suggest use Fox mount engine drilling both mounts same Fox mounts arent pre-drilled switch ing engines no problem plywood aircraft grade Select strong balsa strength needed lightweight balsa strength isnt needed Wing Build wing first will needed fit wing saddle fuselage Cut out ribs identical exception two tip ribs suggest making aluminum template guide cutting ribs Cut 3/16 x 7/16 hard balsa main spars bit long excess left root taper tip ends fit 3/16 sq notch smaller tip ribs Also cut bit long ard balsa rear spars i sq hard balsa leading edge Cut out parts 1 2 3 4 5 wing tips glue together over plan using waxed paper protect plan Let dry thor oughly Make wing panel time over plan flat building board Both right left panels same first because sym metrical airfoil Pin bottom main spar down securely Take 1/4 sq rear spar block up see drawing 9/16 scrap pieces Pin everything securely building board Try Out ribs make sure fit okay glue place Leave pinned down install top main spar Now fit glue eading edge making sure runs out past small tip rib used Super Jet cyanoacrylate glue Ca model makes good joint saves lot time point will notice shorter tip rib has gap between leading edge filled wing tip Take assembled tip cut file V fit leading edge Fit rear joins rear spar block up 9/16 scrap pieces glue wing Let glue dry thoroughly before removing panel board Glue balsa fillers leading edge tips both top bottom needed prevent sanding through final skin Repeat process other panel point remember no right left both wing panels finished mark cut out notches center section ribs accept plywood wing splices will make panels right left see main rib plan Cut out wing splices craft plywood will note -in splices go top -in splices bottom Both 25 40 engine installations snown muse pictures Interchangeable round radial mounts used Match mounting holes both mounts single set firewaliblind nuts can used Screw front wing holds tank access hatch place 26 Model Aviation Tall surfaces should carved/sanded symmetrical airfoil rather leaving blunt know authors interest early Fairchild aircraft thats source rudder shape perfect alignment surfaces predictable first trial flight will prototype needed minor trim transmitter its first flight FULL-SIZE PLANS AVAILABLE. SEE PAGE 164 .TWLEBPEE*BOTPSEE I~BP - l LEAOINSEII,I-__ - I ---0-,-PCBALSa SPOTSPOPESPICES ST/PBoooo / EESRE. OOL PAS154001MBSEE TEST I4BSRRET BOLTTAPER SPEllER TYPICASSEE TESTNOPCRES PATIOST BIBLE RIBSrIEW WILL LOOSE IPt BLSA SLOTSTOICf TO MATCH THE AREA AHAPOEL H5005THBPS SWIlL HE PSEABOTTRAAT-Sr I----PIB OLE - - I IRISE 2CAP/A SI/A BALSE C LOCATIONSHEAP SHAH-RE IORNNCIC ISIECTI_--_ OSEBSOPBAS SEC PEITILIILBLJlC~ ENTA AS-/HII-~io00NoTS--I___ __I PIA T BOISE K4ri5 yj7 -_2 _________________T oTn RETIRE MRPPEOSII PART HE WHOornco 50050U TLI___ I/O P11 SEP00 STOLESEPT11 CGOItRE ALL PORTS ARE HELSAOCTIISE5P/4HLIH NOTEp~4pNOTE MARK NOECS TO HOTTER LINESL. EORAEINS PECES PIE PLELECH LENS NOREE 050 TUSELASE STHENOTSENEH PIA HYANCE P/A PIT SPCRT PEWS RACER IIESISNEO OLPOWN R INIIERET bottom splices heavier take high loads rounding pylons very little dihedral fact little dihedral template isnt shown drawing because angle would imperceptible eye join two panels after ends root spars have trimmed sand root ribs bit top block up panel 3/16 dihedraL Fasten down panels glue top plywood splices set unfasten wing fit install bottom splices wing halves together about time build washout done installing 1/16 balsa skin proper manner First sand high spots framework Apply balsa skin bottom whole wing called plan will leave both wing panels very flexible Turn wing over top side up panel time block up rear spar 9/16-in scrap root 11/16-in scrap junction rear spar tip Fasten down blocked-up panel securely apply top balsa skin glue has dried panel will very rigid washout will set Repeat other paneL Note plan use model Novice Sportsman Aerobatics may want omit washout Remember washout becomes washin flying inverted Cut out balsa skin rear top center section Fit glue ood piece covers aileron connection Install ailerons shown plan Fuselage Cut out parts fasten 3/16 hard balsa rear bottom piece building board Glue ood landing gear saddle front equalizingthe3/16 side Glue -in triangular spruce long erons keeping flush sides bottom piece Glue bulkheads F-2 F-3 making sure truly vertical sides now glued area two bulkheads set bring rear sides using small tail post shown Install x a forming pieces center rear fuselage top -in triangular spruce longerons Make sure notch longerons front wing saddle installed later apply top rear turtle deck time rudder elevator controls will installed area open used cable Nyrod controls balsa forming pieces midway back glue crosspiece holes Nyrod pass through provide exit holes Nyrod side rear suitable height connect control horns Leave forward Nyrod ends bulkhead F-3 unbraced until servos installed Now glue top rear 3/16-in turtle deck can soft balsa Make mock-up stab vertical fin fillets rearward -in scrap Spot-glue together position final tail surfaces making sure finsimulated part lined up straight Shape turtle deck mock-up shown bulkhead F-3 section Y-Y rearward Remove mock-up save fairings fitted position later tail feathers installed leaves front fuselage assembled Glue together two pieces fire wall F-i Bring together sides thick Ca glue bottom F-i hold together short time takes dry use waxed paper protect fingers Fit glue -in triangular spruce longerons bottom sides same side pieces rear firewall F-I Fit install wing saddle-fuselage strengthener can held clamp-type clothespins very nicely glue sets Fit fasten other plywood pieces shown side view Cut out area tail wheel plywood mount install Build forward hatch glue tongue also shown side view Drill install wing holddown dowels landing gear motor mount blind nuts Tail surfaces made entirelyof light weight balsa sure dont get punky kind balsa will break cross-grain very easily want point out need carefully shaping tail surfaces airfoil shown plans Quite often see tail feathers model lightly rounded blunt leading trailing edges blunt edges nearly efficient good alrfoil usually cover surfaces install hinges before finally gluing fuselage After fastening tail surfaces model glue fairings part mock-up side vertical fin Covering good smooth covering job always begins sanding places otherwise would protrude through covering very careful sanding wing tips joints easy sand through rubbed Ambroid glue after sanding added strength used Continued page 121 September 1982 27 P/B EStERS AO CA HARE Hl GIANT SCALE & SPORT PLAN SETS NEW FOR 82 KITS order contains concise construction manual Partial kits include precut wing ribs fuselage farmers prebent landing gear cabana struts Full kits include everything above pluu strip wood necessary hardware assembled landing gear cabana struts fiberglass cowl wheelpants required wbo already have roy plan sets may deduct$IOOO frorothe prices tbe partial full kits listed below 1 B Special MK 3 Convertible 84 Monoplane 78 Biplane Weighs 18 lbs Low Wing & BiplanerPlansS2195 Either Partial Kit $9495 1. Full Kir Sf8495 Pleas $2795 00thPartial Kir $9498 1 Full Kir $79495 Travel Air 2000 108 Classic Scale Biplane Weighs 23 lbs Pleas $2295Partial Kit $8850Full Kit $19850 Travel Air 4000 88 Radial Engine Classic Biplane 23 lbs Plans $2299Partial Kit $9898Full Kit $79980 040 Kir $21400 Fokker DVII 88 German WWI Fighter Biplane 23 lbs Plans $2498Partial Kit 9995Full Kit $79895 WACO UPF7 80 Biplane 23 lbsPlans $2395 Soywith Tripehosed 80 WWI Tn 17 lbsPlansS2 795 Watch rhe ads Parasol version 8/Cs first 3 way convertible airplane Ordering information orders shipped UPS Parcel Post Please add $300 skipping plans $10 kits Make checks money orders payable Jerry Bebrens fastest service send Postal money order bank check Sorry no COD will accepted Send mail orders BEI4REN$ PLAN $ER VICE 3727 Healy Ace Far Rockaniar NV 17897Phone 1212 337-8887 Allow 4S weeks delivery Mr Spook III/Clapp Continued page 27 Super MonoKote covering film Balance Center balance lets call center gravity should shown plans racing better aerobatics Novice Sportsman Pattern balance point can bit farther aft sure balance wing after covered balsa same density used very seldom both sides same weight large wing built #10 common nail needed bring balance wing needs balancing drill small hole extreme tip nail glue Ca model perfect balance nose- tail-heavy may trimmed flight left way trying balance perfection Condition airCraft will trim velocity wasflying trimmed higher lower velocity amount pressure trimmed elevator will vary cause need excessive control stick man ipulation counteract course farther out balance aircraft elevator used trim worse condition becomes other forces can involved aircraft like Mr Spook III 0-0 incidence amount down thrust usedknowledge out-of-trim char acteristics can help get perfect balance longitudinally Lateral balance taken care primarily balancing wing Flying model has given pleasur able hours flying both Pylon Racing fun flying doesnt seem have bad traits ailerons either wing super-Sensitive first test flying plane would advise setting aileron throws minimum Rolls small wing much faster long wing because less area rotate Either way shows no tendency tip stall takeoff pulled up sharply can credited two degrees washout can brought landing three-point attitude way using little back pressure stick mini mizes usual extended glide flare-out Anyone aileron experience will feel ease flying Mr Spook III Propeller Tests diffcrent props OS 251SR witlt 15% nitro fuel props wood except noted Static tests conducted engine mounted Mr Spook Ill Prop 7-6 Top Flite racing 8-4 Zingor 8-5 Zinqer 8-6 Zinqer 8-6 Tornado nylon 8-7 Zingfir 8-8 Top Flite racing 9-4 Zinger 9-5 Zinger 9-6 Zinger 9-7 Zinger 9-7 Zinger rpm Lb Thrust 1650021/2 1650031/2 150003-1/8 140002Io 140002/4 135002/4 13000iv4 1350031/2 1350033/4 1200031/4 1000021/4 1400021/2 Taking account rpm will increase model moving through air flight because load prop lessen ing would seem wise select prop allows higher pitch used advantage increase rpm best combina tion pitch rpm diameter thrust seems 9-in-dia group 8-6 9-6 Zinger note 2000 rpm lost 9-6 thrust improved Continued page 124 rsTERLING MODELS Priced Right 82 Rea1 Sporty Kit FS38 Wingspan 40-5/16 Scale 2-118 ice $4595 Radio Control Control Line 1525 Engine Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line Free Flight Rubber Power PENNY PINCHER Wingspan 132 CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA ISO MUSTANGSABRE JET PIPER CUB T35 THUNDERBIRD p1 $198 EACH-For mail order auth orized Retailer send $198 Penny Pincher plus $100 minimum Shipping Add $150 kit Catalog Request Catalog entire line airplane control line model kits R/C scale & Trainer Kits boat model kits accessories etc $100 enclosed Secrets M6del Building & Con trol Line Book 50 1st Class mail delivery add $50 US & Canada Air Mail other countries add $165 Send STERLING MODELS 3620 C St Phila PA 19134 LN ame AddressState.... Zip September1982 121 Tiper VaEabond Its incredible heres Epoxy Point thats Pre-mbed can! O0VETE No pot life No mIxing 0 Fuelproof Light weight r tough a Flexible 420 Babylon Rd Horsham PA 19044 USA 213 kfi1A1LdtS I/OQJ0MR/C GOODIES CcQQantjPO BOX 192 -CA 91408U UHEAVY DUTYSPECIAL 825I 4-IN SANDERDELUXESYSTEM UAdjustable tableFlite wt 101 oz Miter guide4 Ch Complete 75g 10 metal Ix 4 RegSand discsServos SI 5$275NicadsChgr CH14Spec $2495Reg $27495 Ship $ 350Spec $15995 AIR CAPITALShip $ 650 ZINGER WOODReady-To-FlyFB 100 PROPS 6PockLess Radio EngineII 74-56 $5 2357 Span 8-4-5-65 63Ship SID rULLPWR9456 5 83 SERVO 3/4x 1 7/16 l0-4-5-6 6 39$65040-61 Engine1 x 19/16 1 381l-6775 720Reg $15995 Spec$139951 oz Dean s plugl24s69 65$2500 IReg $22 95 ISpec $13 95Other SizesSame Ship $250Discounts-Ship $200MOREI LtO~m$1 70 ~i~Add Calif Sales Tax 4-1/2% Surcharge Visa Master Cardj NE WJRIAT LAKES MODELMAHER & MOLD AMIA~ Deg Eogine POST OFFICE BOX 308THOMAS J MAHER TAWAS CITY MICHIGAN 48763Podct TELEPHONE 517 362-6078 COMPOSITE ANSTRUTION 1% SCALE 12rD3AI TYPE 99 VALT-6 SNJ HARVARD AICHIU 633/8 Span 45- 60 Power 708Span60- 90Power$18800 $22800 WE THINK YOU WILL AGREE THAT THEY ARE THE BEST NAWLLTD KITS YET FUSALAGE WINGS TAIL SURFACES WHITE EPOXY FINISH READY FOR PAINT & DETAILING EURATHANE FOAM RIGIDLY SUPPORTS EPOXY GELL COAT FIBERGLASS REINFORCED AT STRESS POINTS ONLY ASSEMBLY INSTALLATION OF EOUIPMENT & PAINTING REOLIIRED SCALE WHEELS INCLUDED NO NEED TO COVER WITH BALSA SHEET OR FILM SUPERIOR PRODUCT Whole Lot Left CLUBS CHECK OUT OUR SPECIAL INTRODUCTORY OFFER KITs 9 HL GLIDERSI0THSC4LE XCUMENTAWN DWGS 3SATELLITEKITSOFNOTABLEFAIRCHILDS 17 OLD TIME GAS-- rAIRCHIL FCI Send25for 5RUBBER3NORDICI 1980 catata 9 COMPETITION GASGEORGEHCLAPP FUEL affd DT TIMERS -$1075 eachCENTRAL SCU4RE FAl Model Supply --- N /3036 OX7TORRAECA10INfCV $100 -REFUNDED WITH ORDER lower rpm 9-6 leaves room Radio Technique/Myers increase rpm flight Continued page 30 Conclusion would like give credit good friend Ken Little did flying photography Ken modeler going back late 20s like myself also professional photographer decide build model both wings changeable engines will give several possible combinations long wing 25 engine quite docile short wing 40 engine. Have fun SAFE FLYING IS NO ACCIDENT properly balanced control throws set up controls harmonized word harmonized mean controls should set up have ability provide equal pitch roll yaw rates helps have dual-rate transmitter because can obtain control harmony its screwdriver adjustments next point aware makes difference Watson oriented respect airplane cant just stuff some empty space go fly units long axis must have particular position respect airplane Helicopter center line likewise cover Watson box must lie particular direction case found best results Watsons long axis leaned back about 100 being parallel Heli copter rotor shaft cover aligned fore-and-aft direction true because unit totally free responses lateral acceleraton nor its responses lateral accelerations equal directions have experiment bit get right Once have got right works very welL dont get right will think its defective did Larry Davidson flies RC Helicopter very well performance gusty wind noticably better Watson Stabilizer Does tell something like give product boost performs well Radio Shack Metal Detector 63-3001 appears lead photo reason Heres scene time Saturday afternoon three-day weekend sched uled testing Watson Stabilizer time 610 pnt just 10 minutes after Larry Davidson has closed hobby shop spare parts rye got mail column soon Post Oflice opens Tuesday rm out yard flying Heliboy place place making adjustments suddenly engine stops flight Fortunately rm flying low fast happens landing no problem walk over Heliboy discover needle valve has fallen outsomeplace lawn spent next hour hands knees looking piece brass inch long neigh bor asked know anyone metal detector said No Tim said Radio Shack sells about $40 said Heres $40 Get can Tim came back unit getting dark started learning find metaL found lot scraps aluminum foilprobably gifts rotary power mower Tim pretty clever cut piece brass tubing about inch long look unit adjusted could find tubing easily pretty sure needle valve would turn up did Weekend saved much three days flying worth deadline Now know anyone wants buy metal detector Lease Rent George M Myers 70 Froehlich Farm Rd Hicksvjlla NY 11801 Distance Record Hiner Continued page 33 noon no lift encountered Before second launch Dale Folkening took some pics crew Sailplane second launch 1203 pm light lift encountered took over two hours Pegasus cover first 25 miles early part flight characterized small fairly strong thermals cloud base Jack would keep Pegasus thermal let drift downwind until thermal died Only time would Jack fly straight down road until Pegasus ran next thermaL kept average speed down because ground speed due wind drift about 5 mph thermaling Pegasus much easier see under cloud thermal clear blue sky Between thermals Pegasus flying ground speed of25 30 mph aggressive flying style would result higher speed also greater chance premature landing last hour 18 minutes flight covered 30 miles thermals now very 124 Modet Aviation
Edition: Model Aviation - 1982/09
Page Numbers: 22, 23, 24, 25, 26, 27, 121, 124
George H ciapp NO OCR TEXT Can tell lathe short wing long wing views short wing right has slightly lower aspect ratioand has 25 engine vs 40 long-wing version main difference flight isthatthe long wing rolls slowly Note rubberbandsfor holding wing Author says can prevent much damage mishap compared rigid nylon bolt hold-down method Rounded wing tips aerodynamically clean Wheels angled ward slightly improved ground handling photos author shelved until sometime later 1979 club am Syracuse Thunder bird Aero Radio Society began season Sport Pylon Racing used 1936 Old-Timer design Torc published trainer Model Builder 19781 entered Novice get some experience rounding pylons third race came up Torc under repair airplane piece outgrowth Champ kit knew what wrong reasoned Friezetype ailerons solved same problem real aircraft during late 1920s would try something like leading edge Friezetype aileron projects below wing up position produce needed drag offset other down aileron wasnt time rebuild wing Frieze-type ailerons decided would modify existing ailerons equalize lateral drag did installing small inverted airfoils below aileron gap allow aifflow go between aileron went up leading edge small airfoil came down farther slipstream equalize aileron drag See July 1980 MA Letters Editor sketch system time test Mr Spook before next race added airfoils call collec tors worked very well roll rate fairly fast decreased incidence wing plane much faster regular Champ finished out 79 racing season bird everyone saw asked What gizmos below ailerons During next winter rebuilt try speed added 4 rear fuselage better ground control designed new wing symmetrical airfoil rounded 24 Model Aviation ailerons appear up bit wing root airfoil tipscaused washout recommended racing ru~gC shallow theres room everytning uenina T5flK ins foam-covered battery pack receiver foam packing servos on1/a ply tray Note cable-in-Nyrod control surfaces ,, fastened underside OP/s ply mount allowing ins servo within wing Note Du-Bro linkage top rear plywood center cover hard balsa web HEY CHUCK-HOWHES TAPEDHE ALSO WORKS FEET ON WHENDO YOUGET DONT BE DENSE COME THISANDI-4ETURNSTHE 5TICKAJD RUDDER TIME TODO THIS ThE CITATIONGOES GUY TALKS WITHTHROTTLE TOOPEDALS THOrYOU HAD ON AUTO -I GO ON p THE FAR OUT7 TOGIRDLE THE R/C DESIGN-OVER LSA FAIRING BLOCK/4 BALSA SHEET FOR ~TAILV ObETO iSTANBUL ANDBAOALL TAIL SURFACES -Us R/C TYPES DONTI/4x /4 SPRUCE TRIANGLEISANDED TO STREAMLINE ~~ SLEEPLII-EYOULAZY ,,ARTISTS ALONG FUSELAGE CORNERS DONTTHAT\pQ~CHEEZELEVATOR 4 PLYWOOD - oo AILERUN SERVOBUSHING TO GUIDE INTO C/S RIBSAILERON RODS BALSA FAIRING BLOCKFROM SERVOS 3/16 PLYVOD OVER I/4DOWEL V4 PLYVOOD HORN MOUT GOLDBERG BRACKET ON 3/16 PLYnOD BASE 3/IS HARD BALSA FUSELAGE TOP SIDES AND BOTTOM BALSA HATCHI/B X 1/4 FORMERS MID BODY ONLY 1/8 PLY TONGUE i/8 PL WCOD WING SADDLE UP TO FIREWAj 1/4 SQ BALSA REAR SPAR NOSE 8x 3/8 BALSA AILEROIJ T EDGE STOCK ENGINE SERVO 1/16 SHEET BAJ5A SKIN TOP AND BOTfl /8 X 7/16PLYWOD TOPF 3 SPAR SPLLE FRONT ANDSACKI/B PLGA/CflD I/4x 7/16 PLYWOD BOTTOMI/4HARD BALSA SPAR SPUCE FRONT AND BACK AP STRIPS 1/4 X 3/4x 3 4 PYVcGL G MOUNTTOP AND BOTTOM F 11/8SPRUCE510 6B 008 ALUMInUM BLANK3/6 K 3/B HARD3/16K 7/16 HARD BALSA SPARS TATONE MOUNTPLYWOOD DOL8LEDTRIANGLE i/~\-IORTEN TO 13BALSA L EDGEItP AND BOTTOM TO j I/4-2ONYUYJ SCREW INTO TNUThIN LIACOD2W ILLIAMS WHEELI/16SHEETBALSA L EDGETOPAND BOTTOMI/B BALSA RIBS SYTMETRICALAND ALL ALIKE tips Mr Spook II 15-500 class Enya 40 power flew 1980 racing season never could come close enough pylons going around get first great flier much too large heavy racer trimmed out too great angle-of-attack because its weight slowed down early spring 1981 designed entirely new Mr Spook III tried incorpo rate best two former aircraft first built very strong rubberband-mounted wing could slide ward event hard landing set out build tough craft also light wing mounted rubberbands may look nice mounted nylon bolts mishap shock-mounted wing can prevent lot damage occurring OS 25 Schnuerle engine hand decided build plane itwith shorter wing configuration meets AMA Sport Pylon rules minimum 450 sq 29now 450 35 shorter wing has 453 sq finished model time take Toledo hopes helping Sport Pylon cause us raced during last few years have found skill RC flying greatly improved Its too bad lot fliers feel arent good enough pilots try Sport Pylon Racing Its excellent entry point its tough may think Mr Spook IlL has evolved great flier whether flying Sport Pylon just sport plans 15-500 version 15% airfoil thickness 500 sq wing area removing bay wing panel have shorter wing suitable smaller engines flew short-wing version 1981 racing season OS 25 Schnuerle engine After racing season ended built longer 15-500 wing changed Enya 40 very little difference flight characteristics bigger wing except rolls bit slower competitive anything Sport Pylon Racing Construction Study plans read construction pointers plan change engines would suggest use Fox mount engine drilling both mounts same Fox mounts arent pre-drilled switch ing engines no problem plywood aircraft grade Select strong balsa strength needed lightweight balsa strength isnt needed Wing Build wing first will needed fit wing saddle fuselage Cut out ribs identical exception two tip ribs suggest making aluminum template guide cutting ribs Cut 3/16 x 7/16 hard balsa main spars bit long excess left root taper tip ends fit 3/16 sq notch smaller tip ribs Also cut bit long ard balsa rear spars i sq hard balsa leading edge Cut out parts 1 2 3 4 5 wing tips glue together over plan using waxed paper protect plan Let dry thor oughly Make wing panel time over plan flat building board Both right left panels same first because sym metrical airfoil Pin bottom main spar down securely Take 1/4 sq rear spar block up see drawing 9/16 scrap pieces Pin everything securely building board Try Out ribs make sure fit okay glue place Leave pinned down install top main spar Now fit glue eading edge making sure runs out past small tip rib used Super Jet cyanoacrylate glue Ca model makes good joint saves lot time point will notice shorter tip rib has gap between leading edge filled wing tip Take assembled tip cut file V fit leading edge Fit rear joins rear spar block up 9/16 scrap pieces glue wing Let glue dry thoroughly before removing panel board Glue balsa fillers leading edge tips both top bottom needed prevent sanding through final skin Repeat process other panel point remember no right left both wing panels finished mark cut out notches center section ribs accept plywood wing splices will make panels right left see main rib plan Cut out wing splices craft plywood will note -in splices go top -in splices bottom Both 25 40 engine installations snown muse pictures Interchangeable round radial mounts used Match mounting holes both mounts single set firewaliblind nuts can used Screw front wing holds tank access hatch place 26 Model Aviation Tall surfaces should carved/sanded symmetrical airfoil rather leaving blunt know authors interest early Fairchild aircraft thats source rudder shape perfect alignment surfaces predictable first trial flight will prototype needed minor trim transmitter its first flight FULL-SIZE PLANS AVAILABLE. SEE PAGE 164 .TWLEBPEE*BOTPSEE I~BP - l LEAOINSEII,I-__ - I ---0-,-PCBALSa SPOTSPOPESPICES ST/PBoooo / EESRE. OOL PAS154001MBSEE TEST I4BSRRET BOLTTAPER SPEllER TYPICASSEE TESTNOPCRES PATIOST BIBLE RIBSrIEW WILL LOOSE IPt BLSA SLOTSTOICf TO MATCH THE AREA AHAPOEL H5005THBPS SWIlL HE PSEABOTTRAAT-Sr I----PIB OLE - - I IRISE 2CAP/A SI/A BALSE C LOCATIONSHEAP SHAH-RE IORNNCIC ISIECTI_--_ OSEBSOPBAS SEC PEITILIILBLJlC~ ENTA AS-/HII-~io00NoTS--I___ __I PIA T BOISE K4ri5 yj7 -_2 _________________T oTn RETIRE MRPPEOSII PART HE WHOornco 50050U TLI___ I/O P11 SEP00 STOLESEPT11 CGOItRE ALL PORTS ARE HELSAOCTIISE5P/4HLIH NOTEp~4pNOTE MARK NOECS TO HOTTER LINESL. EORAEINS PECES PIE PLELECH LENS NOREE 050 TUSELASE STHENOTSENEH PIA HYANCE P/A PIT SPCRT PEWS RACER IIESISNEO OLPOWN R INIIERET bottom splices heavier take high loads rounding pylons very little dihedral fact little dihedral template isnt shown drawing because angle would imperceptible eye join two panels after ends root spars have trimmed sand root ribs bit top block up panel 3/16 dihedraL Fasten down panels glue top plywood splices set unfasten wing fit install bottom splices wing halves together about time build washout done installing 1/16 balsa skin proper manner First sand high spots framework Apply balsa skin bottom whole wing called plan will leave both wing panels very flexible Turn wing over top side up panel time block up rear spar 9/16-in scrap root 11/16-in scrap junction rear spar tip Fasten down blocked-up panel securely apply top balsa skin glue has dried panel will very rigid washout will set Repeat other paneL Note plan use model Novice Sportsman Aerobatics may want omit washout Remember washout becomes washin flying inverted Cut out balsa skin rear top center section Fit glue ood piece covers aileron connection Install ailerons shown plan Fuselage Cut out parts fasten 3/16 hard balsa rear bottom piece building board Glue ood landing gear saddle front equalizingthe3/16 side Glue -in triangular spruce long erons keeping flush sides bottom piece Glue bulkheads F-2 F-3 making sure truly vertical sides now glued area two bulkheads set bring rear sides using small tail post shown Install x a forming pieces center rear fuselage top -in triangular spruce longerons Make sure notch longerons front wing saddle installed later apply top rear turtle deck time rudder elevator controls will installed area open used cable Nyrod controls balsa forming pieces midway back glue crosspiece holes Nyrod pass through provide exit holes Nyrod side rear suitable height connect control horns Leave forward Nyrod ends bulkhead F-3 unbraced until servos installed Now glue top rear 3/16-in turtle deck can soft balsa Make mock-up stab vertical fin fillets rearward -in scrap Spot-glue together position final tail surfaces making sure finsimulated part lined up straight Shape turtle deck mock-up shown bulkhead F-3 section Y-Y rearward Remove mock-up save fairings fitted position later tail feathers installed leaves front fuselage assembled Glue together two pieces fire wall F-i Bring together sides thick Ca glue bottom F-i hold together short time takes dry use waxed paper protect fingers Fit glue -in triangular spruce longerons bottom sides same side pieces rear firewall F-I Fit install wing saddle-fuselage strengthener can held clamp-type clothespins very nicely glue sets Fit fasten other plywood pieces shown side view Cut out area tail wheel plywood mount install Build forward hatch glue tongue also shown side view Drill install wing holddown dowels landing gear motor mount blind nuts Tail surfaces made entirelyof light weight balsa sure dont get punky kind balsa will break cross-grain very easily want point out need carefully shaping tail surfaces airfoil shown plans Quite often see tail feathers model lightly rounded blunt leading trailing edges blunt edges nearly efficient good alrfoil usually cover surfaces install hinges before finally gluing fuselage After fastening tail surfaces model glue fairings part mock-up side vertical fin Covering good smooth covering job always begins sanding places otherwise would protrude through covering very careful sanding wing tips joints easy sand through rubbed Ambroid glue after sanding added strength used Continued page 121 September 1982 27 P/B EStERS AO CA HARE Hl GIANT SCALE & SPORT PLAN SETS NEW FOR 82 KITS order contains concise construction manual Partial kits include precut wing ribs fuselage farmers prebent landing gear cabana struts Full kits include everything above pluu strip wood necessary hardware assembled landing gear cabana struts fiberglass cowl wheelpants required wbo already have roy plan sets may deduct$IOOO frorothe prices tbe partial full kits listed below 1 B Special MK 3 Convertible 84 Monoplane 78 Biplane Weighs 18 lbs Low Wing & BiplanerPlansS2195 Either Partial Kit $9495 1. Full Kir Sf8495 Pleas $2795 00thPartial Kir $9498 1 Full Kir $79495 Travel Air 2000 108 Classic Scale Biplane Weighs 23 lbs Pleas $2295Partial Kit $8850Full Kit $19850 Travel Air 4000 88 Radial Engine Classic Biplane 23 lbs Plans $2299Partial Kit $9898Full Kit $79980 040 Kir $21400 Fokker DVII 88 German WWI Fighter Biplane 23 lbs Plans $2498Partial Kit 9995Full Kit $79895 WACO UPF7 80 Biplane 23 lbsPlans $2395 Soywith Tripehosed 80 WWI Tn 17 lbsPlansS2 795 Watch rhe ads Parasol version 8/Cs first 3 way convertible airplane Ordering information orders shipped UPS Parcel Post Please add $300 skipping plans $10 kits Make checks money orders payable Jerry Bebrens fastest service send Postal money order bank check Sorry no COD will accepted Send mail orders BEI4REN$ PLAN $ER VICE 3727 Healy Ace Far Rockaniar NV 17897Phone 1212 337-8887 Allow 4S weeks delivery Mr Spook III/Clapp Continued page 27 Super MonoKote covering film Balance Center balance lets call center gravity should shown plans racing better aerobatics Novice Sportsman Pattern balance point can bit farther aft sure balance wing after covered balsa same density used very seldom both sides same weight large wing built #10 common nail needed bring balance wing needs balancing drill small hole extreme tip nail glue Ca model perfect balance nose- tail-heavy may trimmed flight left way trying balance perfection Condition airCraft will trim velocity wasflying trimmed higher lower velocity amount pressure trimmed elevator will vary cause need excessive control stick man ipulation counteract course farther out balance aircraft elevator used trim worse condition becomes other forces can involved aircraft like Mr Spook III 0-0 incidence amount down thrust usedknowledge out-of-trim char acteristics can help get perfect balance longitudinally Lateral balance taken care primarily balancing wing Flying model has given pleasur able hours flying both Pylon Racing fun flying doesnt seem have bad traits ailerons either wing super-Sensitive first test flying plane would advise setting aileron throws minimum Rolls small wing much faster long wing because less area rotate Either way shows no tendency tip stall takeoff pulled up sharply can credited two degrees washout can brought landing three-point attitude way using little back pressure stick mini mizes usual extended glide flare-out Anyone aileron experience will feel ease flying Mr Spook III Propeller Tests diffcrent props OS 251SR witlt 15% nitro fuel props wood except noted Static tests conducted engine mounted Mr Spook Ill Prop 7-6 Top Flite racing 8-4 Zingor 8-5 Zinqer 8-6 Zinqer 8-6 Tornado nylon 8-7 Zingfir 8-8 Top Flite racing 9-4 Zinger 9-5 Zinger 9-6 Zinger 9-7 Zinger 9-7 Zinger rpm Lb Thrust 1650021/2 1650031/2 150003-1/8 140002Io 140002/4 135002/4 13000iv4 1350031/2 1350033/4 1200031/4 1000021/4 1400021/2 Taking account rpm will increase model moving through air flight because load prop lessen ing would seem wise select prop allows higher pitch used advantage increase rpm best combina tion pitch rpm diameter thrust seems 9-in-dia group 8-6 9-6 Zinger note 2000 rpm lost 9-6 thrust improved Continued page 124 rsTERLING MODELS Priced Right 82 Rea1 Sporty Kit FS38 Wingspan 40-5/16 Scale 2-118 ice $4595 Radio Control Control Line 1525 Engine Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line Free Flight Rubber Power PENNY PINCHER Wingspan 132 CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA ISO MUSTANGSABRE JET PIPER CUB T35 THUNDERBIRD p1 $198 EACH-For mail order auth orized Retailer send $198 Penny Pincher plus $100 minimum Shipping Add $150 kit Catalog Request Catalog entire line airplane control line model kits R/C scale & Trainer Kits boat model kits accessories etc $100 enclosed Secrets M6del Building & Con trol Line Book 50 1st Class mail delivery add $50 US & Canada Air Mail other countries add $165 Send STERLING MODELS 3620 C St Phila PA 19134 LN ame AddressState.... Zip September1982 121 Tiper VaEabond Its incredible heres Epoxy Point thats Pre-mbed can! O0VETE No pot life No mIxing 0 Fuelproof Light weight r tough a Flexible 420 Babylon Rd Horsham PA 19044 USA 213 kfi1A1LdtS I/OQJ0MR/C GOODIES CcQQantjPO BOX 192 -CA 91408U UHEAVY DUTYSPECIAL 825I 4-IN SANDERDELUXESYSTEM UAdjustable tableFlite wt 101 oz Miter guide4 Ch Complete 75g 10 metal Ix 4 RegSand discsServos SI 5$275NicadsChgr CH14Spec $2495Reg $27495 Ship $ 350Spec $15995 AIR CAPITALShip $ 650 ZINGER WOODReady-To-FlyFB 100 PROPS 6PockLess Radio EngineII 74-56 $5 2357 Span 8-4-5-65 63Ship SID rULLPWR9456 5 83 SERVO 3/4x 1 7/16 l0-4-5-6 6 39$65040-61 Engine1 x 19/16 1 381l-6775 720Reg $15995 Spec$139951 oz Dean s plugl24s69 65$2500 IReg $22 95 ISpec $13 95Other SizesSame Ship $250Discounts-Ship $200MOREI LtO~m$1 70 ~i~Add Calif Sales Tax 4-1/2% Surcharge Visa Master Cardj NE WJRIAT LAKES MODELMAHER & MOLD AMIA~ Deg Eogine POST OFFICE BOX 308THOMAS J MAHER TAWAS CITY MICHIGAN 48763Podct TELEPHONE 517 362-6078 COMPOSITE ANSTRUTION 1% SCALE 12rD3AI TYPE 99 VALT-6 SNJ HARVARD AICHIU 633/8 Span 45- 60 Power 708Span60- 90Power$18800 $22800 WE THINK YOU WILL AGREE THAT THEY ARE THE BEST NAWLLTD KITS YET FUSALAGE WINGS TAIL SURFACES WHITE EPOXY FINISH READY FOR PAINT & DETAILING EURATHANE FOAM RIGIDLY SUPPORTS EPOXY GELL COAT FIBERGLASS REINFORCED AT STRESS POINTS ONLY ASSEMBLY INSTALLATION OF EOUIPMENT & PAINTING REOLIIRED SCALE WHEELS INCLUDED NO NEED TO COVER WITH BALSA SHEET OR FILM SUPERIOR PRODUCT Whole Lot Left CLUBS CHECK OUT OUR SPECIAL INTRODUCTORY OFFER KITs 9 HL GLIDERSI0THSC4LE XCUMENTAWN DWGS 3SATELLITEKITSOFNOTABLEFAIRCHILDS 17 OLD TIME GAS-- rAIRCHIL FCI Send25for 5RUBBER3NORDICI 1980 catata 9 COMPETITION GASGEORGEHCLAPP FUEL affd DT TIMERS -$1075 eachCENTRAL SCU4RE FAl Model Supply --- N /3036 OX7TORRAECA10INfCV $100 -REFUNDED WITH ORDER lower rpm 9-6 leaves room Radio Technique/Myers increase rpm flight Continued page 30 Conclusion would like give credit good friend Ken Little did flying photography Ken modeler going back late 20s like myself also professional photographer decide build model both wings changeable engines will give several possible combinations long wing 25 engine quite docile short wing 40 engine. Have fun SAFE FLYING IS NO ACCIDENT properly balanced control throws set up controls harmonized word harmonized mean controls should set up have ability provide equal pitch roll yaw rates helps have dual-rate transmitter because can obtain control harmony its screwdriver adjustments next point aware makes difference Watson oriented respect airplane cant just stuff some empty space go fly units long axis must have particular position respect airplane Helicopter center line likewise cover Watson box must lie particular direction case found best results Watsons long axis leaned back about 100 being parallel Heli copter rotor shaft cover aligned fore-and-aft direction true because unit totally free responses lateral acceleraton nor its responses lateral accelerations equal directions have experiment bit get right Once have got right works very welL dont get right will think its defective did Larry Davidson flies RC Helicopter very well performance gusty wind noticably better Watson Stabilizer Does tell something like give product boost performs well Radio Shack Metal Detector 63-3001 appears lead photo reason Heres scene time Saturday afternoon three-day weekend sched uled testing Watson Stabilizer time 610 pnt just 10 minutes after Larry Davidson has closed hobby shop spare parts rye got mail column soon Post Oflice opens Tuesday rm out yard flying Heliboy place place making adjustments suddenly engine stops flight Fortunately rm flying low fast happens landing no problem walk over Heliboy discover needle valve has fallen outsomeplace lawn spent next hour hands knees looking piece brass inch long neigh bor asked know anyone metal detector said No Tim said Radio Shack sells about $40 said Heres $40 Get can Tim came back unit getting dark started learning find metaL found lot scraps aluminum foilprobably gifts rotary power mower Tim pretty clever cut piece brass tubing about inch long look unit adjusted could find tubing easily pretty sure needle valve would turn up did Weekend saved much three days flying worth deadline Now know anyone wants buy metal detector Lease Rent George M Myers 70 Froehlich Farm Rd Hicksvjlla NY 11801 Distance Record Hiner Continued page 33 noon no lift encountered Before second launch Dale Folkening took some pics crew Sailplane second launch 1203 pm light lift encountered took over two hours Pegasus cover first 25 miles early part flight characterized small fairly strong thermals cloud base Jack would keep Pegasus thermal let drift downwind until thermal died Only time would Jack fly straight down road until Pegasus ran next thermaL kept average speed down because ground speed due wind drift about 5 mph thermaling Pegasus much easier see under cloud thermal clear blue sky Between thermals Pegasus flying ground speed of25 30 mph aggressive flying style would result higher speed also greater chance premature landing last hour 18 minutes flight covered 30 miles thermals now very 124 Modet Aviation
Edition: Model Aviation - 1982/09
Page Numbers: 22, 23, 24, 25, 26, 27, 121, 124
George H ciapp NO OCR TEXT Can tell lathe short wing long wing views short wing right has slightly lower aspect ratioand has 25 engine vs 40 long-wing version main difference flight isthatthe long wing rolls slowly Note rubberbandsfor holding wing Author says can prevent much damage mishap compared rigid nylon bolt hold-down method Rounded wing tips aerodynamically clean Wheels angled ward slightly improved ground handling photos author shelved until sometime later 1979 club am Syracuse Thunder bird Aero Radio Society began season Sport Pylon Racing used 1936 Old-Timer design Torc published trainer Model Builder 19781 entered Novice get some experience rounding pylons third race came up Torc under repair airplane piece outgrowth Champ kit knew what wrong reasoned Friezetype ailerons solved same problem real aircraft during late 1920s would try something like leading edge Friezetype aileron projects below wing up position produce needed drag offset other down aileron wasnt time rebuild wing Frieze-type ailerons decided would modify existing ailerons equalize lateral drag did installing small inverted airfoils below aileron gap allow aifflow go between aileron went up leading edge small airfoil came down farther slipstream equalize aileron drag See July 1980 MA Letters Editor sketch system time test Mr Spook before next race added airfoils call collec tors worked very well roll rate fairly fast decreased incidence wing plane much faster regular Champ finished out 79 racing season bird everyone saw asked What gizmos below ailerons During next winter rebuilt try speed added 4 rear fuselage better ground control designed new wing symmetrical airfoil rounded 24 Model Aviation ailerons appear up bit wing root airfoil tipscaused washout recommended racing ru~gC shallow theres room everytning uenina T5flK ins foam-covered battery pack receiver foam packing servos on1/a ply tray Note cable-in-Nyrod control surfaces ,, fastened underside OP/s ply mount allowing ins servo within wing Note Du-Bro linkage top rear plywood center cover hard balsa web HEY CHUCK-HOWHES TAPEDHE ALSO WORKS FEET ON WHENDO YOUGET DONT BE DENSE COME THISANDI-4ETURNSTHE 5TICKAJD RUDDER TIME TODO THIS ThE CITATIONGOES GUY TALKS WITHTHROTTLE TOOPEDALS THOrYOU HAD ON AUTO -I GO ON p THE FAR OUT7 TOGIRDLE THE R/C DESIGN-OVER LSA FAIRING BLOCK/4 BALSA SHEET FOR ~TAILV ObETO iSTANBUL ANDBAOALL TAIL SURFACES -Us R/C TYPES DONTI/4x /4 SPRUCE TRIANGLEISANDED TO STREAMLINE ~~ SLEEPLII-EYOULAZY ,,ARTISTS ALONG FUSELAGE CORNERS DONTTHAT\pQ~CHEEZELEVATOR 4 PLYWOOD - oo AILERUN SERVOBUSHING TO GUIDE INTO C/S RIBSAILERON RODS BALSA FAIRING BLOCKFROM SERVOS 3/16 PLYVOD OVER I/4DOWEL V4 PLYVOOD HORN MOUT GOLDBERG BRACKET ON 3/16 PLYnOD BASE 3/IS HARD BALSA FUSELAGE TOP SIDES AND BOTTOM BALSA HATCHI/B X 1/4 FORMERS MID BODY ONLY 1/8 PLY TONGUE i/8 PL WCOD WING SADDLE UP TO FIREWAj 1/4 SQ BALSA REAR SPAR NOSE 8x 3/8 BALSA AILEROIJ T EDGE STOCK ENGINE SERVO 1/16 SHEET BAJ5A SKIN TOP AND BOTfl /8 X 7/16PLYWOD TOPF 3 SPAR SPLLE FRONT ANDSACKI/B PLGA/CflD I/4x 7/16 PLYWOD BOTTOMI/4HARD BALSA SPAR SPUCE FRONT AND BACK AP STRIPS 1/4 X 3/4x 3 4 PYVcGL G MOUNTTOP AND BOTTOM F 11/8SPRUCE510 6B 008 ALUMInUM BLANK3/6 K 3/B HARD3/16K 7/16 HARD BALSA SPARS TATONE MOUNTPLYWOOD DOL8LEDTRIANGLE i/~\-IORTEN TO 13BALSA L EDGEItP AND BOTTOM TO j I/4-2ONYUYJ SCREW INTO TNUThIN LIACOD2W ILLIAMS WHEELI/16SHEETBALSA L EDGETOPAND BOTTOMI/B BALSA RIBS SYTMETRICALAND ALL ALIKE tips Mr Spook II 15-500 class Enya 40 power flew 1980 racing season never could come close enough pylons going around get first great flier much too large heavy racer trimmed out too great angle-of-attack because its weight slowed down early spring 1981 designed entirely new Mr Spook III tried incorpo rate best two former aircraft first built very strong rubberband-mounted wing could slide ward event hard landing set out build tough craft also light wing mounted rubberbands may look nice mounted nylon bolts mishap shock-mounted wing can prevent lot damage occurring OS 25 Schnuerle engine hand decided build plane itwith shorter wing configuration meets AMA Sport Pylon rules minimum 450 sq 29now 450 35 shorter wing has 453 sq finished model time take Toledo hopes helping Sport Pylon cause us raced during last few years have found skill RC flying greatly improved Its too bad lot fliers feel arent good enough pilots try Sport Pylon Racing Its excellent entry point its tough may think Mr Spook IlL has evolved great flier whether flying Sport Pylon just sport plans 15-500 version 15% airfoil thickness 500 sq wing area removing bay wing panel have shorter wing suitable smaller engines flew short-wing version 1981 racing season OS 25 Schnuerle engine After racing season ended built longer 15-500 wing changed Enya 40 very little difference flight characteristics bigger wing except rolls bit slower competitive anything Sport Pylon Racing Construction Study plans read construction pointers plan change engines would suggest use Fox mount engine drilling both mounts same Fox mounts arent pre-drilled switch ing engines no problem plywood aircraft grade Select strong balsa strength needed lightweight balsa strength isnt needed Wing Build wing first will needed fit wing saddle fuselage Cut out ribs identical exception two tip ribs suggest making aluminum template guide cutting ribs Cut 3/16 x 7/16 hard balsa main spars bit long excess left root taper tip ends fit 3/16 sq notch smaller tip ribs Also cut bit long ard balsa rear spars i sq hard balsa leading edge Cut out parts 1 2 3 4 5 wing tips glue together over plan using waxed paper protect plan Let dry thor oughly Make wing panel time over plan flat building board Both right left panels same first because sym metrical airfoil Pin bottom main spar down securely Take 1/4 sq rear spar block up see drawing 9/16 scrap pieces Pin everything securely building board Try Out ribs make sure fit okay glue place Leave pinned down install top main spar Now fit glue eading edge making sure runs out past small tip rib used Super Jet cyanoacrylate glue Ca model makes good joint saves lot time point will notice shorter tip rib has gap between leading edge filled wing tip Take assembled tip cut file V fit leading edge Fit rear joins rear spar block up 9/16 scrap pieces glue wing Let glue dry thoroughly before removing panel board Glue balsa fillers leading edge tips both top bottom needed prevent sanding through final skin Repeat process other panel point remember no right left both wing panels finished mark cut out notches center section ribs accept plywood wing splices will make panels right left see main rib plan Cut out wing splices craft plywood will note -in splices go top -in splices bottom Both 25 40 engine installations snown muse pictures Interchangeable round radial mounts used Match mounting holes both mounts single set firewaliblind nuts can used Screw front wing holds tank access hatch place 26 Model Aviation Tall surfaces should carved/sanded symmetrical airfoil rather leaving blunt know authors interest early Fairchild aircraft thats source rudder shape perfect alignment surfaces predictable first trial flight will prototype needed minor trim transmitter its first flight FULL-SIZE PLANS AVAILABLE. SEE PAGE 164 .TWLEBPEE*BOTPSEE I~BP - l LEAOINSEII,I-__ - I ---0-,-PCBALSa SPOTSPOPESPICES ST/PBoooo / EESRE. OOL PAS154001MBSEE TEST I4BSRRET BOLTTAPER SPEllER TYPICASSEE TESTNOPCRES PATIOST BIBLE RIBSrIEW WILL LOOSE IPt BLSA SLOTSTOICf TO MATCH THE AREA AHAPOEL H5005THBPS SWIlL HE PSEABOTTRAAT-Sr I----PIB OLE - - I IRISE 2CAP/A SI/A BALSE C LOCATIONSHEAP SHAH-RE IORNNCIC ISIECTI_--_ OSEBSOPBAS SEC PEITILIILBLJlC~ ENTA AS-/HII-~io00NoTS--I___ __I PIA T BOISE K4ri5 yj7 -_2 _________________T oTn RETIRE MRPPEOSII PART HE WHOornco 50050U TLI___ I/O P11 SEP00 STOLESEPT11 CGOItRE ALL PORTS ARE HELSAOCTIISE5P/4HLIH NOTEp~4pNOTE MARK NOECS TO HOTTER LINESL. EORAEINS PECES PIE PLELECH LENS NOREE 050 TUSELASE STHENOTSENEH PIA HYANCE P/A PIT SPCRT PEWS RACER IIESISNEO OLPOWN R INIIERET bottom splices heavier take high loads rounding pylons very little dihedral fact little dihedral template isnt shown drawing because angle would imperceptible eye join two panels after ends root spars have trimmed sand root ribs bit top block up panel 3/16 dihedraL Fasten down panels glue top plywood splices set unfasten wing fit install bottom splices wing halves together about time build washout done installing 1/16 balsa skin proper manner First sand high spots framework Apply balsa skin bottom whole wing called plan will leave both wing panels very flexible Turn wing over top side up panel time block up rear spar 9/16-in scrap root 11/16-in scrap junction rear spar tip Fasten down blocked-up panel securely apply top balsa skin glue has dried panel will very rigid washout will set Repeat other paneL Note plan use model Novice Sportsman Aerobatics may want omit washout Remember washout becomes washin flying inverted Cut out balsa skin rear top center section Fit glue ood piece covers aileron connection Install ailerons shown plan Fuselage Cut out parts fasten 3/16 hard balsa rear bottom piece building board Glue ood landing gear saddle front equalizingthe3/16 side Glue -in triangular spruce long erons keeping flush sides bottom piece Glue bulkheads F-2 F-3 making sure truly vertical sides now glued area two bulkheads set bring rear sides using small tail post shown Install x a forming pieces center rear fuselage top -in triangular spruce longerons Make sure notch longerons front wing saddle installed later apply top rear turtle deck time rudder elevator controls will installed area open used cable Nyrod controls balsa forming pieces midway back glue crosspiece holes Nyrod pass through provide exit holes Nyrod side rear suitable height connect control horns Leave forward Nyrod ends bulkhead F-3 unbraced until servos installed Now glue top rear 3/16-in turtle deck can soft balsa Make mock-up stab vertical fin fillets rearward -in scrap Spot-glue together position final tail surfaces making sure finsimulated part lined up straight Shape turtle deck mock-up shown bulkhead F-3 section Y-Y rearward Remove mock-up save fairings fitted position later tail feathers installed leaves front fuselage assembled Glue together two pieces fire wall F-i Bring together sides thick Ca glue bottom F-i hold together short time takes dry use waxed paper protect fingers Fit glue -in triangular spruce longerons bottom sides same side pieces rear firewall F-I Fit install wing saddle-fuselage strengthener can held clamp-type clothespins very nicely glue sets Fit fasten other plywood pieces shown side view Cut out area tail wheel plywood mount install Build forward hatch glue tongue also shown side view Drill install wing holddown dowels landing gear motor mount blind nuts Tail surfaces made entirelyof light weight balsa sure dont get punky kind balsa will break cross-grain very easily want point out need carefully shaping tail surfaces airfoil shown plans Quite often see tail feathers model lightly rounded blunt leading trailing edges blunt edges nearly efficient good alrfoil usually cover surfaces install hinges before finally gluing fuselage After fastening tail surfaces model glue fairings part mock-up side vertical fin Covering good smooth covering job always begins sanding places otherwise would protrude through covering very careful sanding wing tips joints easy sand through rubbed Ambroid glue after sanding added strength used Continued page 121 September 1982 27 P/B EStERS AO CA HARE Hl GIANT SCALE & SPORT PLAN SETS NEW FOR 82 KITS order contains concise construction manual Partial kits include precut wing ribs fuselage farmers prebent landing gear cabana struts Full kits include everything above pluu strip wood necessary hardware assembled landing gear cabana struts fiberglass cowl wheelpants required wbo already have roy plan sets may deduct$IOOO frorothe prices tbe partial full kits listed below 1 B Special MK 3 Convertible 84 Monoplane 78 Biplane Weighs 18 lbs Low Wing & BiplanerPlansS2195 Either Partial Kit $9495 1. Full Kir Sf8495 Pleas $2795 00thPartial Kir $9498 1 Full Kir $79495 Travel Air 2000 108 Classic Scale Biplane Weighs 23 lbs Pleas $2295Partial Kit $8850Full Kit $19850 Travel Air 4000 88 Radial Engine Classic Biplane 23 lbs Plans $2299Partial Kit $9898Full Kit $79980 040 Kir $21400 Fokker DVII 88 German WWI Fighter Biplane 23 lbs Plans $2498Partial Kit 9995Full Kit $79895 WACO UPF7 80 Biplane 23 lbsPlans $2395 Soywith Tripehosed 80 WWI Tn 17 lbsPlansS2 795 Watch rhe ads Parasol version 8/Cs first 3 way convertible airplane Ordering information orders shipped UPS Parcel Post Please add $300 skipping plans $10 kits Make checks money orders payable Jerry Bebrens fastest service send Postal money order bank check Sorry no COD will accepted Send mail orders BEI4REN$ PLAN $ER VICE 3727 Healy Ace Far Rockaniar NV 17897Phone 1212 337-8887 Allow 4S weeks delivery Mr Spook III/Clapp Continued page 27 Super MonoKote covering film Balance Center balance lets call center gravity should shown plans racing better aerobatics Novice Sportsman Pattern balance point can bit farther aft sure balance wing after covered balsa same density used very seldom both sides same weight large wing built #10 common nail needed bring balance wing needs balancing drill small hole extreme tip nail glue Ca model perfect balance nose- tail-heavy may trimmed flight left way trying balance perfection Condition airCraft will trim velocity wasflying trimmed higher lower velocity amount pressure trimmed elevator will vary cause need excessive control stick man ipulation counteract course farther out balance aircraft elevator used trim worse condition becomes other forces can involved aircraft like Mr Spook III 0-0 incidence amount down thrust usedknowledge out-of-trim char acteristics can help get perfect balance longitudinally Lateral balance taken care primarily balancing wing Flying model has given pleasur able hours flying both Pylon Racing fun flying doesnt seem have bad traits ailerons either wing super-Sensitive first test flying plane would advise setting aileron throws minimum Rolls small wing much faster long wing because less area rotate Either way shows no tendency tip stall takeoff pulled up sharply can credited two degrees washout can brought landing three-point attitude way using little back pressure stick mini mizes usual extended glide flare-out Anyone aileron experience will feel ease flying Mr Spook III Propeller Tests diffcrent props OS 251SR witlt 15% nitro fuel props wood except noted Static tests conducted engine mounted Mr Spook Ill Prop 7-6 Top Flite racing 8-4 Zingor 8-5 Zinqer 8-6 Zinqer 8-6 Tornado nylon 8-7 Zingfir 8-8 Top Flite racing 9-4 Zinger 9-5 Zinger 9-6 Zinger 9-7 Zinger 9-7 Zinger rpm Lb Thrust 1650021/2 1650031/2 150003-1/8 140002Io 140002/4 135002/4 13000iv4 1350031/2 1350033/4 1200031/4 1000021/4 1400021/2 Taking account rpm will increase model moving through air flight because load prop lessen ing would seem wise select prop allows higher pitch used advantage increase rpm best combina tion pitch rpm diameter thrust seems 9-in-dia group 8-6 9-6 Zinger note 2000 rpm lost 9-6 thrust improved Continued page 124 rsTERLING MODELS Priced Right 82 Rea1 Sporty Kit FS38 Wingspan 40-5/16 Scale 2-118 ice $4595 Radio Control Control Line 1525 Engine Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line Free Flight Rubber Power PENNY PINCHER Wingspan 132 CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA ISO MUSTANGSABRE JET PIPER CUB T35 THUNDERBIRD p1 $198 EACH-For mail order auth orized Retailer send $198 Penny Pincher plus $100 minimum Shipping Add $150 kit Catalog Request Catalog entire line airplane control line model kits R/C scale & Trainer Kits boat model kits accessories etc $100 enclosed Secrets M6del Building & Con trol Line Book 50 1st Class mail delivery add $50 US & Canada Air Mail other countries add $165 Send STERLING MODELS 3620 C St Phila PA 19134 LN ame AddressState.... Zip September1982 121 Tiper VaEabond Its incredible heres Epoxy Point thats Pre-mbed can! O0VETE No pot life No mIxing 0 Fuelproof Light weight r tough a Flexible 420 Babylon Rd Horsham PA 19044 USA 213 kfi1A1LdtS I/OQJ0MR/C GOODIES CcQQantjPO BOX 192 -CA 91408U UHEAVY DUTYSPECIAL 825I 4-IN SANDERDELUXESYSTEM UAdjustable tableFlite wt 101 oz Miter guide4 Ch Complete 75g 10 metal Ix 4 RegSand discsServos SI 5$275NicadsChgr CH14Spec $2495Reg $27495 Ship $ 350Spec $15995 AIR CAPITALShip $ 650 ZINGER WOODReady-To-FlyFB 100 PROPS 6PockLess Radio EngineII 74-56 $5 2357 Span 8-4-5-65 63Ship SID rULLPWR9456 5 83 SERVO 3/4x 1 7/16 l0-4-5-6 6 39$65040-61 Engine1 x 19/16 1 381l-6775 720Reg $15995 Spec$139951 oz Dean s plugl24s69 65$2500 IReg $22 95 ISpec $13 95Other SizesSame Ship $250Discounts-Ship $200MOREI LtO~m$1 70 ~i~Add Calif Sales Tax 4-1/2% Surcharge Visa Master Cardj NE WJRIAT LAKES MODELMAHER & MOLD AMIA~ Deg Eogine POST OFFICE BOX 308THOMAS J MAHER TAWAS CITY MICHIGAN 48763Podct TELEPHONE 517 362-6078 COMPOSITE ANSTRUTION 1% SCALE 12rD3AI TYPE 99 VALT-6 SNJ HARVARD AICHIU 633/8 Span 45- 60 Power 708Span60- 90Power$18800 $22800 WE THINK YOU WILL AGREE THAT THEY ARE THE BEST NAWLLTD KITS YET FUSALAGE WINGS TAIL SURFACES WHITE EPOXY FINISH READY FOR PAINT & DETAILING EURATHANE FOAM RIGIDLY SUPPORTS EPOXY GELL COAT FIBERGLASS REINFORCED AT STRESS POINTS ONLY ASSEMBLY INSTALLATION OF EOUIPMENT & PAINTING REOLIIRED SCALE WHEELS INCLUDED NO NEED TO COVER WITH BALSA SHEET OR FILM SUPERIOR PRODUCT Whole Lot Left CLUBS CHECK OUT OUR SPECIAL INTRODUCTORY OFFER KITs 9 HL GLIDERSI0THSC4LE XCUMENTAWN DWGS 3SATELLITEKITSOFNOTABLEFAIRCHILDS 17 OLD TIME GAS-- rAIRCHIL FCI Send25for 5RUBBER3NORDICI 1980 catata 9 COMPETITION GASGEORGEHCLAPP FUEL affd DT TIMERS -$1075 eachCENTRAL SCU4RE FAl Model Supply --- N /3036 OX7TORRAECA10INfCV $100 -REFUNDED WITH ORDER lower rpm 9-6 leaves room Radio Technique/Myers increase rpm flight Continued page 30 Conclusion would like give credit good friend Ken Little did flying photography Ken modeler going back late 20s like myself also professional photographer decide build model both wings changeable engines will give several possible combinations long wing 25 engine quite docile short wing 40 engine. Have fun SAFE FLYING IS NO ACCIDENT properly balanced control throws set up controls harmonized word harmonized mean controls should set up have ability provide equal pitch roll yaw rates helps have dual-rate transmitter because can obtain control harmony its screwdriver adjustments next point aware makes difference Watson oriented respect airplane cant just stuff some empty space go fly units long axis must have particular position respect airplane Helicopter center line likewise cover Watson box must lie particular direction case found best results Watsons long axis leaned back about 100 being parallel Heli copter rotor shaft cover aligned fore-and-aft direction true because unit totally free responses lateral acceleraton nor its responses lateral accelerations equal directions have experiment bit get right Once have got right works very welL dont get right will think its defective did Larry Davidson flies RC Helicopter very well performance gusty wind noticably better Watson Stabilizer Does tell something like give product boost performs well Radio Shack Metal Detector 63-3001 appears lead photo reason Heres scene time Saturday afternoon three-day weekend sched uled testing Watson Stabilizer time 610 pnt just 10 minutes after Larry Davidson has closed hobby shop spare parts rye got mail column soon Post Oflice opens Tuesday rm out yard flying Heliboy place place making adjustments suddenly engine stops flight Fortunately rm flying low fast happens landing no problem walk over Heliboy discover needle valve has fallen outsomeplace lawn spent next hour hands knees looking piece brass inch long neigh bor asked know anyone metal detector said No Tim said Radio Shack sells about $40 said Heres $40 Get can Tim came back unit getting dark started learning find metaL found lot scraps aluminum foilprobably gifts rotary power mower Tim pretty clever cut piece brass tubing about inch long look unit adjusted could find tubing easily pretty sure needle valve would turn up did Weekend saved much three days flying worth deadline Now know anyone wants buy metal detector Lease Rent George M Myers 70 Froehlich Farm Rd Hicksvjlla NY 11801 Distance Record Hiner Continued page 33 noon no lift encountered Before second launch Dale Folkening took some pics crew Sailplane second launch 1203 pm light lift encountered took over two hours Pegasus cover first 25 miles early part flight characterized small fairly strong thermals cloud base Jack would keep Pegasus thermal let drift downwind until thermal died Only time would Jack fly straight down road until Pegasus ran next thermaL kept average speed down because ground speed due wind drift about 5 mph thermaling Pegasus much easier see under cloud thermal clear blue sky Between thermals Pegasus flying ground speed of25 30 mph aggressive flying style would result higher speed also greater chance premature landing last hour 18 minutes flight covered 30 miles thermals now very 124 Modet Aviation