NO OCR TEXT tcnsr tin U IYCI 11SCULUIY uiUIiIu au.ty OIU IWIUbJtI SLrn*IP ity trars,.. s iuuiwuht showu. 11W IruGIur viny iiiely Adding same opaque covering fuselage wing usuu ~ion creates illusion wing two parts really wing one-piece structure Left A fully-charged 6-amp motorcycle battery adequate recharging motor power pack four five times Having just extra pack keeps down-time minimum author changing packs another flight Right easy access motor battery hatch removed Battery connected mini alligator clips easy one-hand attachment Fuse CyA-glued front battery partition Lert IJoT5 ne reiariunsnip uj inc muiur L wtw dllu riuc ciuvatol vu ncucvc WELL~ - c radio battery receiver wrapped ligntweugnt foam Right Using thin spruce spars webbing between produces strong light wing Three prototypes exist presented plans pictures has span 52 365 sq area 20-oz weight ready fly weight breakdown wing covered 35 oz fuselage tail covered 3 oz motor battery 75 oz radio 5 oz 100 mAb battery pack have much building experi ence should review article gluing techniques March 1983 MA before getting underway Wing construction Twenty ribs cut after making template A6 2 plywood can easily cut modeling knife template secured sheet light 76 C-grain balsa pins #11 X-Acto blade used cut around template Very uniform results achieved method Cover plan plastic film Begin building both main panels same time follows Pin straightedge plan along TE butt 5A-in TE pieces together centerline pin place Pin bottom 2 spruce spars plan after checking alignment notches ribs razor plane sanding block remove bottom LE edge facing building board approximately A2 will allow ribs sit flush plan Pin /4 sq LE place Use triangle assure vertical horizontal trueness glue ribs cyanoacrylate CyA except W-A B outermost W- ribs panel top spar installed later outer panels made same manner main section except spar /4 X 3A2 balsa glue W-l end caps just yet critical part building wing mak ing sure panels aligned properly joined dihedral An easy way achieve have two building boards such described February 1983 32 PAnr4l Aviation Elevator pushrod exits cleanly rear Carl Goldberg Models mini-horns used fuselage Radio antenna runs Nyrods Thread hinges operate freely fuselage length exits right sewn neatly give good appearance MNK tJLLJ UULJY- II NWIN s WHRIj WMN YULJrMM~JI j MALLV YLJLJN6Y TI4E AMA N RESTOI YOUFOR 5I BIKE RIDESIGATE TO FLYING -SAIL-SII- AS AMA-Z0 TOOFTI4AT INEVERBUILD -JOUSES -SCUBA -ALL OF THAT OF LEARN YOU WEREGREWA BEARD10 BOAT5- 1016BUTAMAKNO%VS WI4AT SEVENTYTflEY -DON TLOOKDTC4E5 FOR SALLMENASKEDMEICW~ATTVCEMEIIT COMEYOU DONT NT BLOCKS LOOK -B QLANES _____ 70 3/32 BALSA FIN-RUOCER AND ELEVATOR GOLDBERG SHORTHORN 1/16 SHEET TOP ANDBALSA FRAMING BY ELEVATOR SERwjBOTtOM CROSS GRAIN DONEL HOLD DOWNNO4 SCREWS 2 1/16 PLYWCXJO JOINT CLAMPDIHEDRAL./ 3/32 SHEET SIDING I/B SO FRAMED TIPS I/B LONGERONS1/8 BALSA SHEET WITH FIN SLOT 1/32 SHEET C/S TOPAND BOlTOM1/4 X V2 HOLD DOWN BLOCK FOR WING I/B SHEET HATCH ACE MICRO SERVOS1/16 SHEET WEBS 3A6X 5/16 TEDGE STOCK GUIDES 1/16 SHEET GUSSETS D3 I/32PLWOOD POLYHEDRAL BRACE NOSEV16 SHEET ALL RIBS MOTOR SCREWS2 I/32PLY SIID- NOSE TO Fl I/16BALSA FILLERSG E AA flLRIES 61I/4X 3/ 32 SPRUCE SPAR lOPAND BOTrOM ASTRO 035 ELECTRIC MOTOR3 MIN TILL KLU MA article Accurately hinge middle will always flat twist angle Prop up boards center panel spar bottoms 1 table sur face Bevel LE spars TE fit well joined angle Apply white glue edges join pan els pin place Glue top spar Cut front dihedral brace A2 ply install white glue Clamp clothespins setting up cut rear brace Note /16 narrower spar depth allow top bottom sheeting installing place spacer A2-in scrap under brace check see another A2-in scrap will come out flush top spar Trim needed glue clamp place Trim A2 top bottom ribs W-A B allow sheeting cut ribs two spar notches install using shims Glue W-A ribs other well wing parts Y32-in top sheeting V6-in verti cal grain shear webs installed next panels still pinned board prop up tips outer panels bottom spar li/s high Bevel ends glue place Next add V16-in corner gussets Y32 ply TE wing hold-down screws Sheet bottom center section /32 balsa Shape sand LE wing tips Add end caps finished wing should weigh about 25 oz Fuselage Cut two sides light weight straight-grained Y32 balsa similar density will curve evenly Clamp halves together clothespins using cardboard scraps proctect balsa denting sand identical shape triangle mark thie positions formers Fl F2 inside walls Cut Fl F2 A-in stiff balsa mark vertical centers Cut hard wood wing hold-down blocks bevel LE block per plan brace can fashioned scrap /6 balsa hold tail lining things up base made about 3-in sq notched vertical post 4 5 high 1 wide Put three rubberbands loosely around fuselage halves clip tail tem porary support clothespin Line up fuselage over top view plan pin support board Spread sides slide formers place Testfit hardwood pieces forward holddown should flush top rear should A6 top formers lined up over planvertical parallel other triangle shows fuselage sides square building board CyA-glue formers place Glue hardwood blocks white glue Cut out firewall Its much easier drill holes before cutting large sheet plywood Drill center 7A6-in-dia hole /s-in-dia motor mounting holes check motor fits properly air inlet holes formed drilling two A-in-dia holes side-by-side connecting enlarging rat-tail file Draw vertical line center firewall Pull sides nose padded C-clamp Apply white glue firewall edges install tween sides tighten clamp Make sure centerline matches plan firewall has no sidethrust about 20 downthrust Let dry thoroughly Remove board install longerons throughout CyA glue used no clamping needed Add /6 balsa fillers nose Put fuselage back over top view Place book side fuselage rest straightedge fuselage should perfectly straight F- 1 tail Apply CyA glue tail joint Install cross braces apply A6-in cross-grain top sheeting white glue stopping beginning stab loca tion Install pushrod outer sleeves apply A6-in cross-grain bottom sheeting Finish top sheeting hatch balsa Note hatch front rear nose sheeting beveled hold front hatch place catch made strips hardwood bent pin Add /32 ply skid Round off corners minimize square box look sand fuselage smooth Tail section stabilizer built three pieces over plan tips attached later LE TE center section x 3A6 balsa Pick hard piece LE piece soft enough push needle through sewing elevator hinges TE rest stab made sq lightweight balsa LB TE tips trimmed rounded after gussets added dry prop up tips /2-in bottom Bevel mating edges glue position fin rudder elevator cut medium weight straight-grained 2 balsa Cut slot stabilizer fin glue fin position after checking squareness stab tail assembly attached fuse lage white glue Take time assure trueness angles Wing mounting Check wing fit saddle mark its center Drill hole wing LB dihedral joint accommodate A-in hole peg slide wing place does sit flush 34 Model Aviation Before covering complete structure weighs 55 oz covering adds about 15 oz Spars inboard wing panels spruce strength tip panels use balsa lightness Assembled stabilizer other major parts laid out prior assembly plywood motor mount stack ribs timeconsuming pieces cut out FULL-SIZE PLANS AVAILABLE . SEE PAGE 170 I/B HOLD DOWN DOWEL 1/4 55 BALSA EADlNG EDGE / _____ 3 I/SDPL lW-BPOLYHEDRAL WIW-IjW IjjWWIW-IAS/-I1IWBiIWARUIWIWIWIW-BRA /32 PLYD2I/IA C-GRAIN WINGPLANTO PVIEWDIHEDRAL I/4oS/SDBALSA RIBS BRACES ISPRUCE lID BALSA I/SD BALSA GUSSETS F SHEETING TO ISPARS V550 BOTTOM I/ASS I/3D PLY- IA IA SA D3GUSSETS WINGJ LEFTTIPRIGHT WINGTIP I/SoS/IA sHARD BALSA LE PIN SLOT BALSA WAW-3W2WI WIWO /W-3W-A I/IA C-GRAIN1/4 3/32 BALSA RIBSBALSA SPARSI/B BALSA3/3DI/B S/ID MEG BALSA TE GUSSETSBALSA SHEET 3/32 --L-oBALSA ENSCAPIX~ 3/A 5/B RAGSW-A2RESD3 DREG TRAILING EDGE STOCKI/A SO RUD INSTALL KILLSWITCHPI/IAoI/BBASARIBW-3DREG BAYTERYPERMANENTLY WIRED01REQ W-2DREG F MOTORSw -TRIM 232 ROB BOYTOB OP L E- GD REQ I/IA S/IA55 RIBS SlY FLAY ON BOORSW-IDO RED BATTERYPOSE GAHARD WOOD BENT PINALL BRACES I/3D PLY DETAILSMI/A BALSA S I/B HATCH 150 I/D HO WOODI/3DAL HATCH STOPBENT PINPLYSCREWS I/IA C-GRAIN BALSA PSSHBODS LS PLYsY-SIDESIDE OSTLI E VIEW DDNfZ5j SIA Ill~- ------ __ 1MOTHBAYYACEI 035F/SE 4TT IIFIN KEYES THRO STAB B/COO-1/16 BALSA CROSSI/BSO BALSA LONGERONS GRAIN TOP H BOTTOMAND CROSS BBACES HORT HORNS I/3D PLY SKIDMOTOR SW RS275-ISSS3/3D SHEET BALSA SIDES I/BoS/A 4IIELEO BALSA -CT IRCVRI U I/A l/D1/32 PLYHARDWOOD SKID fHARDWOOD FIREWALLI/R BALSA I/B PLY PD I/B BALSA P1 FUSELAGE TOP VIEW WATTS UP TOP AND BOTTOM SHEETING OMITTED FOR CLARITY R/C ELECTRIC POWERED GLIDER 0I2345A WING SPAN 52 WT 20 OZ AREA 365 SO I{ LOADING B OZ & DRAWN BY KEN MARRON IJiS R' TflF IJDMOBILU saddle elongate hole rat-tail file overdo filing snug fit desired Align wing perfectly drill two holes #4 self-tapping sheetmetal hold-down screws through rear hardwood hold-down block Covering Pick lightweight material model presented covered transparent yellow Solarfilm wing stab opaque orange fuselage tail Midnight blue used windows logo D&J striping finished off control horns cut down Carl Gold berg short horns attached CyA After sanding bottom removing covering material horn location flood area CyA harden wood Press horn place hold few moments its dry run bead CyA around sides make rivets mounting holes some CyA baking soda After covering rudder elevator attached using thread doubled over applied Figure 8 pattern shown use Solarfilm hinges described January 1983 MA page 49 Check balance point CG components temporarily place including pushrods CG correct position mount servos rails March 1984 35 1/16 BALSA VERTICAL GRAIN WEDS Above The complete fuselage sa,uu ru reaoy covering radio installation shouldnt weigh 25 oz Select wood carefully minimize weight Right Motor battery compartment must quite strong handle mass concentrated Balsa longerons 1/16 balsa doublers nose stiffen sides considerably motor actuated push-ON push-OFF switch Radio Shack #275-1555 full-down elevator applied Remove switch mounting nut discard Sand side switch will face fuse lage wall begin position Make sure turns off servo centered neutral Adjust switch trim transmitter until full-down elevator turns switch time tach CyA glue four sides wiring before installing radio Run antenna wire back through fuselage out through small hole made near rear Motor batteries GE AA cells used because high quality cost less two dollars GE C cells another good choice motor can also purchased complete batteries As shown motor-to-battery con nection made mini-alligator clips Radio Shack #270-378 rather servo-type plugs way plane can held hand unclipping removing power pack other hand pack used can wired permanently charging jack added ex ternally Miscellaneous comments Although made operate six cells motor works well four cells conditions calm plane usually flown way four cells weight goes down about 1 oz flatter glide results total powered altitude about same just takes longer get Since less current consumed run minute longer charged 12-volt source six cells should have resistor series two Radio Shack #271-311 I-ohm 10-watt resistors series work well Four cells should never charged 12 volts dropping resistor series Current never tapers off enough avoid damaging cells Instead connect two four-cell packs series 12-volt charging Dont overlook slow-charging 50 mA radio charging system equivalent Six cells charge well eight-cell transmitter output method has ad vantage allowing arrive fly ing field several pre-charged packs Dont overlook condition charging battery getting poor per formance system suspect weak charging battery first Finally no cooling exhaust slots used needed setup Since current draw low little heat generated dissipated Trimming flying new RC flying please seek out helpeven have travel far visit club one-time lesson several hours will greatly improve chances success Install 6-3 prop motor power pack Stuff foam padding around pack hook up yet As safety pre caution get habit range-checking electric-powered plane before installing Continued page 130 36 Model Aviation Fuselage alignment symmetry made ea sier using graph paper line drawn down center centerlines marked formers firewall Rubberbands model ing clamps help hold things tight gluing couple straightedges assure straight f use lage sides F-2 tail post Books hold sides place adding crosspieces brace further described text holds fuelage rear centerline aligning formers firewall paper clamp clothespins hold center Authors prototype wing under construction dihedral braces glue dries Shims trailing edge bottom spar pinned 1/32 ply provide correct spacing ribs place Ribs added LE and dihedral braces center sheeting RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA Electric flight challenge sport flier competitor alike Watts Up introduction should gratifying Happy landings Radio Technique/Myers Continued page 39 ing microscopic whiskers through sulating paper can blow out whis kers high-voltage charge really trust cells afterward dont So away workbench lot Chargemaster may prove fine tool Ace RC Inc Box 51 lE Higginsville MO 64037 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 [ writing advertisers mention t read about ModI Aviation J-3 has proven over years real crowd pleaserprobably because its good old J-3 fact touches ob servers plane built winter 1978-79 first flown March 3 latter year didnt know till later Bob Boucher Astro Flight design ing Porterfield same time two planes very similar date J-3 has accumulated 334 flights drop oil has soaked 150 depicted Fig 4 Prior 1980 keeping record flight time date number flights thats reason about half plotted Fig 4 obvious five-mm airplane can see vital statistics what details Heres some information about plane J-3 scratch-built using Sig plans guideline Since electricpowered knew plane itself lightweight rugged kit version glow engine would set about redrawing plans choosing construc tion techniques wood sizes consistent application also changed air foil 12/2% flat-bottom section Dihedral added lieu ailerons Result real charmer Admittedly 1-3 fair-weather flier does handle wind well defi nitely fun fly calm air typical flight starts small amount ground handling followed taxi takeoff Fol lowing climb-out back off proportional throttle cruise around Flybys snapbeautiful experience plane pussycat handling several times Ive nearly hypnotized myself flying myself Usually Ill some touch-and-goes two inside loops playing throttle control needed plane glides nicely note some longer lift-assisted flight times Fig 4 generally keep power whole flight varying amount de sired effect About third time have enough power left after landing taxi back pit area Otherwise power out have bring back dead-stick 1-3 good example inadequate battery cooling Im fourth battery heat reason time design construction what looked like good installation cooling has proved adequate Whatever knowledge may have Electrics has come cheaply 15-size motor used plane new version plane new so-called black back 15 current model Astro 15 rather different motor Ferrite 15 uses 12 cells 12 Ah may install someday get longer flights overall weight will increase about 9 oz estimate flight time should increase about 8-9 mm Look over vitals get general idea candidate designs around would perform comparably would require some modeling effort make suitable electric power J-3 example Astro Porterfield 132 Model Aviation Watts Up/MarronElectrics/Kopski Continued page 130 Continued paqe 44 jSSOATES INCNEW MO 13 N IS Dont bee stung AIDS CLOUD WAYHAYWARD CA 945S OS4ONCsalaENYA GUARANTEED CY NO 5310 Os l2O4cy NO 5317 HOT SHOT Hor~US PAT 4405890 Hand held rechargeable glow plug energizer size engine uses gtow plug Small enough carry yoijr shirt pocket Makes dry cell batteries power losing wires thing ot past Easy attachment cowd engines Reinforced extra hard use Can charged upto 1000 times Uses HEAD LOCK glow plug connector MODEL PRODUCTS CORP positive corinec tion tothe glow plug 90 day unconditional guarantee plus limited warranty up year Complete instructions charger Available dealer order direct Visa Mastercard accepted Add Si 50 postage power convenience $1995 Without charger $1595 b & r Hobbies PO Box 192 Oscoda MI 48750 [517] 7393549 Making Leisure Time Enjoyable
Edition: Model Aviation - 1984/03
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 130, 132
NO OCR TEXT tcnsr tin U IYCI 11SCULUIY uiUIiIu au.ty OIU IWIUbJtI SLrn*IP ity trars,.. s iuuiwuht showu. 11W IruGIur viny iiiely Adding same opaque covering fuselage wing usuu ~ion creates illusion wing two parts really wing one-piece structure Left A fully-charged 6-amp motorcycle battery adequate recharging motor power pack four five times Having just extra pack keeps down-time minimum author changing packs another flight Right easy access motor battery hatch removed Battery connected mini alligator clips easy one-hand attachment Fuse CyA-glued front battery partition Lert IJoT5 ne reiariunsnip uj inc muiur L wtw dllu riuc ciuvatol vu ncucvc WELL~ - c radio battery receiver wrapped ligntweugnt foam Right Using thin spruce spars webbing between produces strong light wing Three prototypes exist presented plans pictures has span 52 365 sq area 20-oz weight ready fly weight breakdown wing covered 35 oz fuselage tail covered 3 oz motor battery 75 oz radio 5 oz 100 mAb battery pack have much building experi ence should review article gluing techniques March 1983 MA before getting underway Wing construction Twenty ribs cut after making template A6 2 plywood can easily cut modeling knife template secured sheet light 76 C-grain balsa pins #11 X-Acto blade used cut around template Very uniform results achieved method Cover plan plastic film Begin building both main panels same time follows Pin straightedge plan along TE butt 5A-in TE pieces together centerline pin place Pin bottom 2 spruce spars plan after checking alignment notches ribs razor plane sanding block remove bottom LE edge facing building board approximately A2 will allow ribs sit flush plan Pin /4 sq LE place Use triangle assure vertical horizontal trueness glue ribs cyanoacrylate CyA except W-A B outermost W- ribs panel top spar installed later outer panels made same manner main section except spar /4 X 3A2 balsa glue W-l end caps just yet critical part building wing mak ing sure panels aligned properly joined dihedral An easy way achieve have two building boards such described February 1983 32 PAnr4l Aviation Elevator pushrod exits cleanly rear Carl Goldberg Models mini-horns used fuselage Radio antenna runs Nyrods Thread hinges operate freely fuselage length exits right sewn neatly give good appearance MNK tJLLJ UULJY- II NWIN s WHRIj WMN YULJrMM~JI j MALLV YLJLJN6Y TI4E AMA N RESTOI YOUFOR 5I BIKE RIDESIGATE TO FLYING -SAIL-SII- AS AMA-Z0 TOOFTI4AT INEVERBUILD -JOUSES -SCUBA -ALL OF THAT OF LEARN YOU WEREGREWA BEARD10 BOAT5- 1016BUTAMAKNO%VS WI4AT SEVENTYTflEY -DON TLOOKDTC4E5 FOR SALLMENASKEDMEICW~ATTVCEMEIIT COMEYOU DONT NT BLOCKS LOOK -B QLANES _____ 70 3/32 BALSA FIN-RUOCER AND ELEVATOR GOLDBERG SHORTHORN 1/16 SHEET TOP ANDBALSA FRAMING BY ELEVATOR SERwjBOTtOM CROSS GRAIN DONEL HOLD DOWNNO4 SCREWS 2 1/16 PLYWCXJO JOINT CLAMPDIHEDRAL./ 3/32 SHEET SIDING I/B SO FRAMED TIPS I/B LONGERONS1/8 BALSA SHEET WITH FIN SLOT 1/32 SHEET C/S TOPAND BOlTOM1/4 X V2 HOLD DOWN BLOCK FOR WING I/B SHEET HATCH ACE MICRO SERVOS1/16 SHEET WEBS 3A6X 5/16 TEDGE STOCK GUIDES 1/16 SHEET GUSSETS D3 I/32PLWOOD POLYHEDRAL BRACE NOSEV16 SHEET ALL RIBS MOTOR SCREWS2 I/32PLY SIID- NOSE TO Fl I/16BALSA FILLERSG E AA flLRIES 61I/4X 3/ 32 SPRUCE SPAR lOPAND BOTrOM ASTRO 035 ELECTRIC MOTOR3 MIN TILL KLU MA article Accurately hinge middle will always flat twist angle Prop up boards center panel spar bottoms 1 table sur face Bevel LE spars TE fit well joined angle Apply white glue edges join pan els pin place Glue top spar Cut front dihedral brace A2 ply install white glue Clamp clothespins setting up cut rear brace Note /16 narrower spar depth allow top bottom sheeting installing place spacer A2-in scrap under brace check see another A2-in scrap will come out flush top spar Trim needed glue clamp place Trim A2 top bottom ribs W-A B allow sheeting cut ribs two spar notches install using shims Glue W-A ribs other well wing parts Y32-in top sheeting V6-in verti cal grain shear webs installed next panels still pinned board prop up tips outer panels bottom spar li/s high Bevel ends glue place Next add V16-in corner gussets Y32 ply TE wing hold-down screws Sheet bottom center section /32 balsa Shape sand LE wing tips Add end caps finished wing should weigh about 25 oz Fuselage Cut two sides light weight straight-grained Y32 balsa similar density will curve evenly Clamp halves together clothespins using cardboard scraps proctect balsa denting sand identical shape triangle mark thie positions formers Fl F2 inside walls Cut Fl F2 A-in stiff balsa mark vertical centers Cut hard wood wing hold-down blocks bevel LE block per plan brace can fashioned scrap /6 balsa hold tail lining things up base made about 3-in sq notched vertical post 4 5 high 1 wide Put three rubberbands loosely around fuselage halves clip tail tem porary support clothespin Line up fuselage over top view plan pin support board Spread sides slide formers place Testfit hardwood pieces forward holddown should flush top rear should A6 top formers lined up over planvertical parallel other triangle shows fuselage sides square building board CyA-glue formers place Glue hardwood blocks white glue Cut out firewall Its much easier drill holes before cutting large sheet plywood Drill center 7A6-in-dia hole /s-in-dia motor mounting holes check motor fits properly air inlet holes formed drilling two A-in-dia holes side-by-side connecting enlarging rat-tail file Draw vertical line center firewall Pull sides nose padded C-clamp Apply white glue firewall edges install tween sides tighten clamp Make sure centerline matches plan firewall has no sidethrust about 20 downthrust Let dry thoroughly Remove board install longerons throughout CyA glue used no clamping needed Add /6 balsa fillers nose Put fuselage back over top view Place book side fuselage rest straightedge fuselage should perfectly straight F- 1 tail Apply CyA glue tail joint Install cross braces apply A6-in cross-grain top sheeting white glue stopping beginning stab loca tion Install pushrod outer sleeves apply A6-in cross-grain bottom sheeting Finish top sheeting hatch balsa Note hatch front rear nose sheeting beveled hold front hatch place catch made strips hardwood bent pin Add /32 ply skid Round off corners minimize square box look sand fuselage smooth Tail section stabilizer built three pieces over plan tips attached later LE TE center section x 3A6 balsa Pick hard piece LE piece soft enough push needle through sewing elevator hinges TE rest stab made sq lightweight balsa LB TE tips trimmed rounded after gussets added dry prop up tips /2-in bottom Bevel mating edges glue position fin rudder elevator cut medium weight straight-grained 2 balsa Cut slot stabilizer fin glue fin position after checking squareness stab tail assembly attached fuse lage white glue Take time assure trueness angles Wing mounting Check wing fit saddle mark its center Drill hole wing LB dihedral joint accommodate A-in hole peg slide wing place does sit flush 34 Model Aviation Before covering complete structure weighs 55 oz covering adds about 15 oz Spars inboard wing panels spruce strength tip panels use balsa lightness Assembled stabilizer other major parts laid out prior assembly plywood motor mount stack ribs timeconsuming pieces cut out FULL-SIZE PLANS AVAILABLE . SEE PAGE 170 I/B HOLD DOWN DOWEL 1/4 55 BALSA EADlNG EDGE / _____ 3 I/SDPL lW-BPOLYHEDRAL WIW-IjW IjjWWIW-IAS/-I1IWBiIWARUIWIWIWIW-BRA /32 PLYD2I/IA C-GRAIN WINGPLANTO PVIEWDIHEDRAL I/4oS/SDBALSA RIBS BRACES ISPRUCE lID BALSA I/SD BALSA GUSSETS F SHEETING TO ISPARS V550 BOTTOM I/ASS I/3D PLY- IA IA SA D3GUSSETS WINGJ LEFTTIPRIGHT WINGTIP I/SoS/IA sHARD BALSA LE PIN SLOT BALSA WAW-3W2WI WIWO /W-3W-A I/IA C-GRAIN1/4 3/32 BALSA RIBSBALSA SPARSI/B BALSA3/3DI/B S/ID MEG BALSA TE GUSSETSBALSA SHEET 3/32 --L-oBALSA ENSCAPIX~ 3/A 5/B RAGSW-A2RESD3 DREG TRAILING EDGE STOCKI/A SO RUD INSTALL KILLSWITCHPI/IAoI/BBASARIBW-3DREG BAYTERYPERMANENTLY WIRED01REQ W-2DREG F MOTORSw -TRIM 232 ROB BOYTOB OP L E- GD REQ I/IA S/IA55 RIBS SlY FLAY ON BOORSW-IDO RED BATTERYPOSE GAHARD WOOD BENT PINALL BRACES I/3D PLY DETAILSMI/A BALSA S I/B HATCH 150 I/D HO WOODI/3DAL HATCH STOPBENT PINPLYSCREWS I/IA C-GRAIN BALSA PSSHBODS LS PLYsY-SIDESIDE OSTLI E VIEW DDNfZ5j SIA Ill~- ------ __ 1MOTHBAYYACEI 035F/SE 4TT IIFIN KEYES THRO STAB B/COO-1/16 BALSA CROSSI/BSO BALSA LONGERONS GRAIN TOP H BOTTOMAND CROSS BBACES HORT HORNS I/3D PLY SKIDMOTOR SW RS275-ISSS3/3D SHEET BALSA SIDES I/BoS/A 4IIELEO BALSA -CT IRCVRI U I/A l/D1/32 PLYHARDWOOD SKID fHARDWOOD FIREWALLI/R BALSA I/B PLY PD I/B BALSA P1 FUSELAGE TOP VIEW WATTS UP TOP AND BOTTOM SHEETING OMITTED FOR CLARITY R/C ELECTRIC POWERED GLIDER 0I2345A WING SPAN 52 WT 20 OZ AREA 365 SO I{ LOADING B OZ & DRAWN BY KEN MARRON IJiS R' TflF IJDMOBILU saddle elongate hole rat-tail file overdo filing snug fit desired Align wing perfectly drill two holes #4 self-tapping sheetmetal hold-down screws through rear hardwood hold-down block Covering Pick lightweight material model presented covered transparent yellow Solarfilm wing stab opaque orange fuselage tail Midnight blue used windows logo D&J striping finished off control horns cut down Carl Gold berg short horns attached CyA After sanding bottom removing covering material horn location flood area CyA harden wood Press horn place hold few moments its dry run bead CyA around sides make rivets mounting holes some CyA baking soda After covering rudder elevator attached using thread doubled over applied Figure 8 pattern shown use Solarfilm hinges described January 1983 MA page 49 Check balance point CG components temporarily place including pushrods CG correct position mount servos rails March 1984 35 1/16 BALSA VERTICAL GRAIN WEDS Above The complete fuselage sa,uu ru reaoy covering radio installation shouldnt weigh 25 oz Select wood carefully minimize weight Right Motor battery compartment must quite strong handle mass concentrated Balsa longerons 1/16 balsa doublers nose stiffen sides considerably motor actuated push-ON push-OFF switch Radio Shack #275-1555 full-down elevator applied Remove switch mounting nut discard Sand side switch will face fuse lage wall begin position Make sure turns off servo centered neutral Adjust switch trim transmitter until full-down elevator turns switch time tach CyA glue four sides wiring before installing radio Run antenna wire back through fuselage out through small hole made near rear Motor batteries GE AA cells used because high quality cost less two dollars GE C cells another good choice motor can also purchased complete batteries As shown motor-to-battery con nection made mini-alligator clips Radio Shack #270-378 rather servo-type plugs way plane can held hand unclipping removing power pack other hand pack used can wired permanently charging jack added ex ternally Miscellaneous comments Although made operate six cells motor works well four cells conditions calm plane usually flown way four cells weight goes down about 1 oz flatter glide results total powered altitude about same just takes longer get Since less current consumed run minute longer charged 12-volt source six cells should have resistor series two Radio Shack #271-311 I-ohm 10-watt resistors series work well Four cells should never charged 12 volts dropping resistor series Current never tapers off enough avoid damaging cells Instead connect two four-cell packs series 12-volt charging Dont overlook slow-charging 50 mA radio charging system equivalent Six cells charge well eight-cell transmitter output method has ad vantage allowing arrive fly ing field several pre-charged packs Dont overlook condition charging battery getting poor per formance system suspect weak charging battery first Finally no cooling exhaust slots used needed setup Since current draw low little heat generated dissipated Trimming flying new RC flying please seek out helpeven have travel far visit club one-time lesson several hours will greatly improve chances success Install 6-3 prop motor power pack Stuff foam padding around pack hook up yet As safety pre caution get habit range-checking electric-powered plane before installing Continued page 130 36 Model Aviation Fuselage alignment symmetry made ea sier using graph paper line drawn down center centerlines marked formers firewall Rubberbands model ing clamps help hold things tight gluing couple straightedges assure straight f use lage sides F-2 tail post Books hold sides place adding crosspieces brace further described text holds fuelage rear centerline aligning formers firewall paper clamp clothespins hold center Authors prototype wing under construction dihedral braces glue dries Shims trailing edge bottom spar pinned 1/32 ply provide correct spacing ribs place Ribs added LE and dihedral braces center sheeting RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA Electric flight challenge sport flier competitor alike Watts Up introduction should gratifying Happy landings Radio Technique/Myers Continued page 39 ing microscopic whiskers through sulating paper can blow out whis kers high-voltage charge really trust cells afterward dont So away workbench lot Chargemaster may prove fine tool Ace RC Inc Box 51 lE Higginsville MO 64037 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 [ writing advertisers mention t read about ModI Aviation J-3 has proven over years real crowd pleaserprobably because its good old J-3 fact touches ob servers plane built winter 1978-79 first flown March 3 latter year didnt know till later Bob Boucher Astro Flight design ing Porterfield same time two planes very similar date J-3 has accumulated 334 flights drop oil has soaked 150 depicted Fig 4 Prior 1980 keeping record flight time date number flights thats reason about half plotted Fig 4 obvious five-mm airplane can see vital statistics what details Heres some information about plane J-3 scratch-built using Sig plans guideline Since electricpowered knew plane itself lightweight rugged kit version glow engine would set about redrawing plans choosing construc tion techniques wood sizes consistent application also changed air foil 12/2% flat-bottom section Dihedral added lieu ailerons Result real charmer Admittedly 1-3 fair-weather flier does handle wind well defi nitely fun fly calm air typical flight starts small amount ground handling followed taxi takeoff Fol lowing climb-out back off proportional throttle cruise around Flybys snapbeautiful experience plane pussycat handling several times Ive nearly hypnotized myself flying myself Usually Ill some touch-and-goes two inside loops playing throttle control needed plane glides nicely note some longer lift-assisted flight times Fig 4 generally keep power whole flight varying amount de sired effect About third time have enough power left after landing taxi back pit area Otherwise power out have bring back dead-stick 1-3 good example inadequate battery cooling Im fourth battery heat reason time design construction what looked like good installation cooling has proved adequate Whatever knowledge may have Electrics has come cheaply 15-size motor used plane new version plane new so-called black back 15 current model Astro 15 rather different motor Ferrite 15 uses 12 cells 12 Ah may install someday get longer flights overall weight will increase about 9 oz estimate flight time should increase about 8-9 mm Look over vitals get general idea candidate designs around would perform comparably would require some modeling effort make suitable electric power J-3 example Astro Porterfield 132 Model Aviation Watts Up/MarronElectrics/Kopski Continued page 130 Continued paqe 44 jSSOATES INCNEW MO 13 N IS Dont bee stung AIDS CLOUD WAYHAYWARD CA 945S OS4ONCsalaENYA GUARANTEED CY NO 5310 Os l2O4cy NO 5317 HOT SHOT Hor~US PAT 4405890 Hand held rechargeable glow plug energizer size engine uses gtow plug Small enough carry yoijr shirt pocket Makes dry cell batteries power losing wires thing ot past Easy attachment cowd engines Reinforced extra hard use Can charged upto 1000 times Uses HEAD LOCK glow plug connector MODEL PRODUCTS CORP positive corinec tion tothe glow plug 90 day unconditional guarantee plus limited warranty up year Complete instructions charger Available dealer order direct Visa Mastercard accepted Add Si 50 postage power convenience $1995 Without charger $1595 b & r Hobbies PO Box 192 Oscoda MI 48750 [517] 7393549 Making Leisure Time Enjoyable
Edition: Model Aviation - 1984/03
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 130, 132
NO OCR TEXT tcnsr tin U IYCI 11SCULUIY uiUIiIu au.ty OIU IWIUbJtI SLrn*IP ity trars,.. s iuuiwuht showu. 11W IruGIur viny iiiely Adding same opaque covering fuselage wing usuu ~ion creates illusion wing two parts really wing one-piece structure Left A fully-charged 6-amp motorcycle battery adequate recharging motor power pack four five times Having just extra pack keeps down-time minimum author changing packs another flight Right easy access motor battery hatch removed Battery connected mini alligator clips easy one-hand attachment Fuse CyA-glued front battery partition Lert IJoT5 ne reiariunsnip uj inc muiur L wtw dllu riuc ciuvatol vu ncucvc WELL~ - c radio battery receiver wrapped ligntweugnt foam Right Using thin spruce spars webbing between produces strong light wing Three prototypes exist presented plans pictures has span 52 365 sq area 20-oz weight ready fly weight breakdown wing covered 35 oz fuselage tail covered 3 oz motor battery 75 oz radio 5 oz 100 mAb battery pack have much building experi ence should review article gluing techniques March 1983 MA before getting underway Wing construction Twenty ribs cut after making template A6 2 plywood can easily cut modeling knife template secured sheet light 76 C-grain balsa pins #11 X-Acto blade used cut around template Very uniform results achieved method Cover plan plastic film Begin building both main panels same time follows Pin straightedge plan along TE butt 5A-in TE pieces together centerline pin place Pin bottom 2 spruce spars plan after checking alignment notches ribs razor plane sanding block remove bottom LE edge facing building board approximately A2 will allow ribs sit flush plan Pin /4 sq LE place Use triangle assure vertical horizontal trueness glue ribs cyanoacrylate CyA except W-A B outermost W- ribs panel top spar installed later outer panels made same manner main section except spar /4 X 3A2 balsa glue W-l end caps just yet critical part building wing mak ing sure panels aligned properly joined dihedral An easy way achieve have two building boards such described February 1983 32 PAnr4l Aviation Elevator pushrod exits cleanly rear Carl Goldberg Models mini-horns used fuselage Radio antenna runs Nyrods Thread hinges operate freely fuselage length exits right sewn neatly give good appearance MNK tJLLJ UULJY- II NWIN s WHRIj WMN YULJrMM~JI j MALLV YLJLJN6Y TI4E AMA N RESTOI YOUFOR 5I BIKE RIDESIGATE TO FLYING -SAIL-SII- AS AMA-Z0 TOOFTI4AT INEVERBUILD -JOUSES -SCUBA -ALL OF THAT OF LEARN YOU WEREGREWA BEARD10 BOAT5- 1016BUTAMAKNO%VS WI4AT SEVENTYTflEY -DON TLOOKDTC4E5 FOR SALLMENASKEDMEICW~ATTVCEMEIIT COMEYOU DONT NT BLOCKS LOOK -B QLANES _____ 70 3/32 BALSA FIN-RUOCER AND ELEVATOR GOLDBERG SHORTHORN 1/16 SHEET TOP ANDBALSA FRAMING BY ELEVATOR SERwjBOTtOM CROSS GRAIN DONEL HOLD DOWNNO4 SCREWS 2 1/16 PLYWCXJO JOINT CLAMPDIHEDRAL./ 3/32 SHEET SIDING I/B SO FRAMED TIPS I/B LONGERONS1/8 BALSA SHEET WITH FIN SLOT 1/32 SHEET C/S TOPAND BOlTOM1/4 X V2 HOLD DOWN BLOCK FOR WING I/B SHEET HATCH ACE MICRO SERVOS1/16 SHEET WEBS 3A6X 5/16 TEDGE STOCK GUIDES 1/16 SHEET GUSSETS D3 I/32PLWOOD POLYHEDRAL BRACE NOSEV16 SHEET ALL RIBS MOTOR SCREWS2 I/32PLY SIID- NOSE TO Fl I/16BALSA FILLERSG E AA flLRIES 61I/4X 3/ 32 SPRUCE SPAR lOPAND BOTrOM ASTRO 035 ELECTRIC MOTOR3 MIN TILL KLU MA article Accurately hinge middle will always flat twist angle Prop up boards center panel spar bottoms 1 table sur face Bevel LE spars TE fit well joined angle Apply white glue edges join pan els pin place Glue top spar Cut front dihedral brace A2 ply install white glue Clamp clothespins setting up cut rear brace Note /16 narrower spar depth allow top bottom sheeting installing place spacer A2-in scrap under brace check see another A2-in scrap will come out flush top spar Trim needed glue clamp place Trim A2 top bottom ribs W-A B allow sheeting cut ribs two spar notches install using shims Glue W-A ribs other well wing parts Y32-in top sheeting V6-in verti cal grain shear webs installed next panels still pinned board prop up tips outer panels bottom spar li/s high Bevel ends glue place Next add V16-in corner gussets Y32 ply TE wing hold-down screws Sheet bottom center section /32 balsa Shape sand LE wing tips Add end caps finished wing should weigh about 25 oz Fuselage Cut two sides light weight straight-grained Y32 balsa similar density will curve evenly Clamp halves together clothespins using cardboard scraps proctect balsa denting sand identical shape triangle mark thie positions formers Fl F2 inside walls Cut Fl F2 A-in stiff balsa mark vertical centers Cut hard wood wing hold-down blocks bevel LE block per plan brace can fashioned scrap /6 balsa hold tail lining things up base made about 3-in sq notched vertical post 4 5 high 1 wide Put three rubberbands loosely around fuselage halves clip tail tem porary support clothespin Line up fuselage over top view plan pin support board Spread sides slide formers place Testfit hardwood pieces forward holddown should flush top rear should A6 top formers lined up over planvertical parallel other triangle shows fuselage sides square building board CyA-glue formers place Glue hardwood blocks white glue Cut out firewall Its much easier drill holes before cutting large sheet plywood Drill center 7A6-in-dia hole /s-in-dia motor mounting holes check motor fits properly air inlet holes formed drilling two A-in-dia holes side-by-side connecting enlarging rat-tail file Draw vertical line center firewall Pull sides nose padded C-clamp Apply white glue firewall edges install tween sides tighten clamp Make sure centerline matches plan firewall has no sidethrust about 20 downthrust Let dry thoroughly Remove board install longerons throughout CyA glue used no clamping needed Add /6 balsa fillers nose Put fuselage back over top view Place book side fuselage rest straightedge fuselage should perfectly straight F- 1 tail Apply CyA glue tail joint Install cross braces apply A6-in cross-grain top sheeting white glue stopping beginning stab loca tion Install pushrod outer sleeves apply A6-in cross-grain bottom sheeting Finish top sheeting hatch balsa Note hatch front rear nose sheeting beveled hold front hatch place catch made strips hardwood bent pin Add /32 ply skid Round off corners minimize square box look sand fuselage smooth Tail section stabilizer built three pieces over plan tips attached later LE TE center section x 3A6 balsa Pick hard piece LE piece soft enough push needle through sewing elevator hinges TE rest stab made sq lightweight balsa LB TE tips trimmed rounded after gussets added dry prop up tips /2-in bottom Bevel mating edges glue position fin rudder elevator cut medium weight straight-grained 2 balsa Cut slot stabilizer fin glue fin position after checking squareness stab tail assembly attached fuse lage white glue Take time assure trueness angles Wing mounting Check wing fit saddle mark its center Drill hole wing LB dihedral joint accommodate A-in hole peg slide wing place does sit flush 34 Model Aviation Before covering complete structure weighs 55 oz covering adds about 15 oz Spars inboard wing panels spruce strength tip panels use balsa lightness Assembled stabilizer other major parts laid out prior assembly plywood motor mount stack ribs timeconsuming pieces cut out FULL-SIZE PLANS AVAILABLE . SEE PAGE 170 I/B HOLD DOWN DOWEL 1/4 55 BALSA EADlNG EDGE / _____ 3 I/SDPL lW-BPOLYHEDRAL WIW-IjW IjjWWIW-IAS/-I1IWBiIWARUIWIWIWIW-BRA /32 PLYD2I/IA C-GRAIN WINGPLANTO PVIEWDIHEDRAL I/4oS/SDBALSA RIBS BRACES ISPRUCE lID BALSA I/SD BALSA GUSSETS F SHEETING TO ISPARS V550 BOTTOM I/ASS I/3D PLY- IA IA SA D3GUSSETS WINGJ LEFTTIPRIGHT WINGTIP I/SoS/IA sHARD BALSA LE PIN SLOT BALSA WAW-3W2WI WIWO /W-3W-A I/IA C-GRAIN1/4 3/32 BALSA RIBSBALSA SPARSI/B BALSA3/3DI/B S/ID MEG BALSA TE GUSSETSBALSA SHEET 3/32 --L-oBALSA ENSCAPIX~ 3/A 5/B RAGSW-A2RESD3 DREG TRAILING EDGE STOCKI/A SO RUD INSTALL KILLSWITCHPI/IAoI/BBASARIBW-3DREG BAYTERYPERMANENTLY WIRED01REQ W-2DREG F MOTORSw -TRIM 232 ROB BOYTOB OP L E- GD REQ I/IA S/IA55 RIBS SlY FLAY ON BOORSW-IDO RED BATTERYPOSE GAHARD WOOD BENT PINALL BRACES I/3D PLY DETAILSMI/A BALSA S I/B HATCH 150 I/D HO WOODI/3DAL HATCH STOPBENT PINPLYSCREWS I/IA C-GRAIN BALSA PSSHBODS LS PLYsY-SIDESIDE OSTLI E VIEW DDNfZ5j SIA Ill~- ------ __ 1MOTHBAYYACEI 035F/SE 4TT IIFIN KEYES THRO STAB B/COO-1/16 BALSA CROSSI/BSO BALSA LONGERONS GRAIN TOP H BOTTOMAND CROSS BBACES HORT HORNS I/3D PLY SKIDMOTOR SW RS275-ISSS3/3D SHEET BALSA SIDES I/BoS/A 4IIELEO BALSA -CT IRCVRI U I/A l/D1/32 PLYHARDWOOD SKID fHARDWOOD FIREWALLI/R BALSA I/B PLY PD I/B BALSA P1 FUSELAGE TOP VIEW WATTS UP TOP AND BOTTOM SHEETING OMITTED FOR CLARITY R/C ELECTRIC POWERED GLIDER 0I2345A WING SPAN 52 WT 20 OZ AREA 365 SO I{ LOADING B OZ & DRAWN BY KEN MARRON IJiS R' TflF IJDMOBILU saddle elongate hole rat-tail file overdo filing snug fit desired Align wing perfectly drill two holes #4 self-tapping sheetmetal hold-down screws through rear hardwood hold-down block Covering Pick lightweight material model presented covered transparent yellow Solarfilm wing stab opaque orange fuselage tail Midnight blue used windows logo D&J striping finished off control horns cut down Carl Gold berg short horns attached CyA After sanding bottom removing covering material horn location flood area CyA harden wood Press horn place hold few moments its dry run bead CyA around sides make rivets mounting holes some CyA baking soda After covering rudder elevator attached using thread doubled over applied Figure 8 pattern shown use Solarfilm hinges described January 1983 MA page 49 Check balance point CG components temporarily place including pushrods CG correct position mount servos rails March 1984 35 1/16 BALSA VERTICAL GRAIN WEDS Above The complete fuselage sa,uu ru reaoy covering radio installation shouldnt weigh 25 oz Select wood carefully minimize weight Right Motor battery compartment must quite strong handle mass concentrated Balsa longerons 1/16 balsa doublers nose stiffen sides considerably motor actuated push-ON push-OFF switch Radio Shack #275-1555 full-down elevator applied Remove switch mounting nut discard Sand side switch will face fuse lage wall begin position Make sure turns off servo centered neutral Adjust switch trim transmitter until full-down elevator turns switch time tach CyA glue four sides wiring before installing radio Run antenna wire back through fuselage out through small hole made near rear Motor batteries GE AA cells used because high quality cost less two dollars GE C cells another good choice motor can also purchased complete batteries As shown motor-to-battery con nection made mini-alligator clips Radio Shack #270-378 rather servo-type plugs way plane can held hand unclipping removing power pack other hand pack used can wired permanently charging jack added ex ternally Miscellaneous comments Although made operate six cells motor works well four cells conditions calm plane usually flown way four cells weight goes down about 1 oz flatter glide results total powered altitude about same just takes longer get Since less current consumed run minute longer charged 12-volt source six cells should have resistor series two Radio Shack #271-311 I-ohm 10-watt resistors series work well Four cells should never charged 12 volts dropping resistor series Current never tapers off enough avoid damaging cells Instead connect two four-cell packs series 12-volt charging Dont overlook slow-charging 50 mA radio charging system equivalent Six cells charge well eight-cell transmitter output method has ad vantage allowing arrive fly ing field several pre-charged packs Dont overlook condition charging battery getting poor per formance system suspect weak charging battery first Finally no cooling exhaust slots used needed setup Since current draw low little heat generated dissipated Trimming flying new RC flying please seek out helpeven have travel far visit club one-time lesson several hours will greatly improve chances success Install 6-3 prop motor power pack Stuff foam padding around pack hook up yet As safety pre caution get habit range-checking electric-powered plane before installing Continued page 130 36 Model Aviation Fuselage alignment symmetry made ea sier using graph paper line drawn down center centerlines marked formers firewall Rubberbands model ing clamps help hold things tight gluing couple straightedges assure straight f use lage sides F-2 tail post Books hold sides place adding crosspieces brace further described text holds fuelage rear centerline aligning formers firewall paper clamp clothespins hold center Authors prototype wing under construction dihedral braces glue dries Shims trailing edge bottom spar pinned 1/32 ply provide correct spacing ribs place Ribs added LE and dihedral braces center sheeting RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA Electric flight challenge sport flier competitor alike Watts Up introduction should gratifying Happy landings Radio Technique/Myers Continued page 39 ing microscopic whiskers through sulating paper can blow out whis kers high-voltage charge really trust cells afterward dont So away workbench lot Chargemaster may prove fine tool Ace RC Inc Box 51 lE Higginsville MO 64037 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 [ writing advertisers mention t read about ModI Aviation J-3 has proven over years real crowd pleaserprobably because its good old J-3 fact touches ob servers plane built winter 1978-79 first flown March 3 latter year didnt know till later Bob Boucher Astro Flight design ing Porterfield same time two planes very similar date J-3 has accumulated 334 flights drop oil has soaked 150 depicted Fig 4 Prior 1980 keeping record flight time date number flights thats reason about half plotted Fig 4 obvious five-mm airplane can see vital statistics what details Heres some information about plane J-3 scratch-built using Sig plans guideline Since electricpowered knew plane itself lightweight rugged kit version glow engine would set about redrawing plans choosing construc tion techniques wood sizes consistent application also changed air foil 12/2% flat-bottom section Dihedral added lieu ailerons Result real charmer Admittedly 1-3 fair-weather flier does handle wind well defi nitely fun fly calm air typical flight starts small amount ground handling followed taxi takeoff Fol lowing climb-out back off proportional throttle cruise around Flybys snapbeautiful experience plane pussycat handling several times Ive nearly hypnotized myself flying myself Usually Ill some touch-and-goes two inside loops playing throttle control needed plane glides nicely note some longer lift-assisted flight times Fig 4 generally keep power whole flight varying amount de sired effect About third time have enough power left after landing taxi back pit area Otherwise power out have bring back dead-stick 1-3 good example inadequate battery cooling Im fourth battery heat reason time design construction what looked like good installation cooling has proved adequate Whatever knowledge may have Electrics has come cheaply 15-size motor used plane new version plane new so-called black back 15 current model Astro 15 rather different motor Ferrite 15 uses 12 cells 12 Ah may install someday get longer flights overall weight will increase about 9 oz estimate flight time should increase about 8-9 mm Look over vitals get general idea candidate designs around would perform comparably would require some modeling effort make suitable electric power J-3 example Astro Porterfield 132 Model Aviation Watts Up/MarronElectrics/Kopski Continued page 130 Continued paqe 44 jSSOATES INCNEW MO 13 N IS Dont bee stung AIDS CLOUD WAYHAYWARD CA 945S OS4ONCsalaENYA GUARANTEED CY NO 5310 Os l2O4cy NO 5317 HOT SHOT Hor~US PAT 4405890 Hand held rechargeable glow plug energizer size engine uses gtow plug Small enough carry yoijr shirt pocket Makes dry cell batteries power losing wires thing ot past Easy attachment cowd engines Reinforced extra hard use Can charged upto 1000 times Uses HEAD LOCK glow plug connector MODEL PRODUCTS CORP positive corinec tion tothe glow plug 90 day unconditional guarantee plus limited warranty up year Complete instructions charger Available dealer order direct Visa Mastercard accepted Add Si 50 postage power convenience $1995 Without charger $1595 b & r Hobbies PO Box 192 Oscoda MI 48750 [517] 7393549 Making Leisure Time Enjoyable
Edition: Model Aviation - 1984/03
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 130, 132
NO OCR TEXT tcnsr tin U IYCI 11SCULUIY uiUIiIu au.ty OIU IWIUbJtI SLrn*IP ity trars,.. s iuuiwuht showu. 11W IruGIur viny iiiely Adding same opaque covering fuselage wing usuu ~ion creates illusion wing two parts really wing one-piece structure Left A fully-charged 6-amp motorcycle battery adequate recharging motor power pack four five times Having just extra pack keeps down-time minimum author changing packs another flight Right easy access motor battery hatch removed Battery connected mini alligator clips easy one-hand attachment Fuse CyA-glued front battery partition Lert IJoT5 ne reiariunsnip uj inc muiur L wtw dllu riuc ciuvatol vu ncucvc WELL~ - c radio battery receiver wrapped ligntweugnt foam Right Using thin spruce spars webbing between produces strong light wing Three prototypes exist presented plans pictures has span 52 365 sq area 20-oz weight ready fly weight breakdown wing covered 35 oz fuselage tail covered 3 oz motor battery 75 oz radio 5 oz 100 mAb battery pack have much building experi ence should review article gluing techniques March 1983 MA before getting underway Wing construction Twenty ribs cut after making template A6 2 plywood can easily cut modeling knife template secured sheet light 76 C-grain balsa pins #11 X-Acto blade used cut around template Very uniform results achieved method Cover plan plastic film Begin building both main panels same time follows Pin straightedge plan along TE butt 5A-in TE pieces together centerline pin place Pin bottom 2 spruce spars plan after checking alignment notches ribs razor plane sanding block remove bottom LE edge facing building board approximately A2 will allow ribs sit flush plan Pin /4 sq LE place Use triangle assure vertical horizontal trueness glue ribs cyanoacrylate CyA except W-A B outermost W- ribs panel top spar installed later outer panels made same manner main section except spar /4 X 3A2 balsa glue W-l end caps just yet critical part building wing mak ing sure panels aligned properly joined dihedral An easy way achieve have two building boards such described February 1983 32 PAnr4l Aviation Elevator pushrod exits cleanly rear Carl Goldberg Models mini-horns used fuselage Radio antenna runs Nyrods Thread hinges operate freely fuselage length exits right sewn neatly give good appearance MNK tJLLJ UULJY- II NWIN s WHRIj WMN YULJrMM~JI j MALLV YLJLJN6Y TI4E AMA N RESTOI YOUFOR 5I BIKE RIDESIGATE TO FLYING -SAIL-SII- AS AMA-Z0 TOOFTI4AT INEVERBUILD -JOUSES -SCUBA -ALL OF THAT OF LEARN YOU WEREGREWA BEARD10 BOAT5- 1016BUTAMAKNO%VS WI4AT SEVENTYTflEY -DON TLOOKDTC4E5 FOR SALLMENASKEDMEICW~ATTVCEMEIIT COMEYOU DONT NT BLOCKS LOOK -B QLANES _____ 70 3/32 BALSA FIN-RUOCER AND ELEVATOR GOLDBERG SHORTHORN 1/16 SHEET TOP ANDBALSA FRAMING BY ELEVATOR SERwjBOTtOM CROSS GRAIN DONEL HOLD DOWNNO4 SCREWS 2 1/16 PLYWCXJO JOINT CLAMPDIHEDRAL./ 3/32 SHEET SIDING I/B SO FRAMED TIPS I/B LONGERONS1/8 BALSA SHEET WITH FIN SLOT 1/32 SHEET C/S TOPAND BOlTOM1/4 X V2 HOLD DOWN BLOCK FOR WING I/B SHEET HATCH ACE MICRO SERVOS1/16 SHEET WEBS 3A6X 5/16 TEDGE STOCK GUIDES 1/16 SHEET GUSSETS D3 I/32PLWOOD POLYHEDRAL BRACE NOSEV16 SHEET ALL RIBS MOTOR SCREWS2 I/32PLY SIID- NOSE TO Fl I/16BALSA FILLERSG E AA flLRIES 61I/4X 3/ 32 SPRUCE SPAR lOPAND BOTrOM ASTRO 035 ELECTRIC MOTOR3 MIN TILL KLU MA article Accurately hinge middle will always flat twist angle Prop up boards center panel spar bottoms 1 table sur face Bevel LE spars TE fit well joined angle Apply white glue edges join pan els pin place Glue top spar Cut front dihedral brace A2 ply install white glue Clamp clothespins setting up cut rear brace Note /16 narrower spar depth allow top bottom sheeting installing place spacer A2-in scrap under brace check see another A2-in scrap will come out flush top spar Trim needed glue clamp place Trim A2 top bottom ribs W-A B allow sheeting cut ribs two spar notches install using shims Glue W-A ribs other well wing parts Y32-in top sheeting V6-in verti cal grain shear webs installed next panels still pinned board prop up tips outer panels bottom spar li/s high Bevel ends glue place Next add V16-in corner gussets Y32 ply TE wing hold-down screws Sheet bottom center section /32 balsa Shape sand LE wing tips Add end caps finished wing should weigh about 25 oz Fuselage Cut two sides light weight straight-grained Y32 balsa similar density will curve evenly Clamp halves together clothespins using cardboard scraps proctect balsa denting sand identical shape triangle mark thie positions formers Fl F2 inside walls Cut Fl F2 A-in stiff balsa mark vertical centers Cut hard wood wing hold-down blocks bevel LE block per plan brace can fashioned scrap /6 balsa hold tail lining things up base made about 3-in sq notched vertical post 4 5 high 1 wide Put three rubberbands loosely around fuselage halves clip tail tem porary support clothespin Line up fuselage over top view plan pin support board Spread sides slide formers place Testfit hardwood pieces forward holddown should flush top rear should A6 top formers lined up over planvertical parallel other triangle shows fuselage sides square building board CyA-glue formers place Glue hardwood blocks white glue Cut out firewall Its much easier drill holes before cutting large sheet plywood Drill center 7A6-in-dia hole /s-in-dia motor mounting holes check motor fits properly air inlet holes formed drilling two A-in-dia holes side-by-side connecting enlarging rat-tail file Draw vertical line center firewall Pull sides nose padded C-clamp Apply white glue firewall edges install tween sides tighten clamp Make sure centerline matches plan firewall has no sidethrust about 20 downthrust Let dry thoroughly Remove board install longerons throughout CyA glue used no clamping needed Add /6 balsa fillers nose Put fuselage back over top view Place book side fuselage rest straightedge fuselage should perfectly straight F- 1 tail Apply CyA glue tail joint Install cross braces apply A6-in cross-grain top sheeting white glue stopping beginning stab loca tion Install pushrod outer sleeves apply A6-in cross-grain bottom sheeting Finish top sheeting hatch balsa Note hatch front rear nose sheeting beveled hold front hatch place catch made strips hardwood bent pin Add /32 ply skid Round off corners minimize square box look sand fuselage smooth Tail section stabilizer built three pieces over plan tips attached later LE TE center section x 3A6 balsa Pick hard piece LE piece soft enough push needle through sewing elevator hinges TE rest stab made sq lightweight balsa LB TE tips trimmed rounded after gussets added dry prop up tips /2-in bottom Bevel mating edges glue position fin rudder elevator cut medium weight straight-grained 2 balsa Cut slot stabilizer fin glue fin position after checking squareness stab tail assembly attached fuse lage white glue Take time assure trueness angles Wing mounting Check wing fit saddle mark its center Drill hole wing LB dihedral joint accommodate A-in hole peg slide wing place does sit flush 34 Model Aviation Before covering complete structure weighs 55 oz covering adds about 15 oz Spars inboard wing panels spruce strength tip panels use balsa lightness Assembled stabilizer other major parts laid out prior assembly plywood motor mount stack ribs timeconsuming pieces cut out FULL-SIZE PLANS AVAILABLE . SEE PAGE 170 I/B HOLD DOWN DOWEL 1/4 55 BALSA EADlNG EDGE / _____ 3 I/SDPL lW-BPOLYHEDRAL WIW-IjW IjjWWIW-IAS/-I1IWBiIWARUIWIWIWIW-BRA /32 PLYD2I/IA C-GRAIN WINGPLANTO PVIEWDIHEDRAL I/4oS/SDBALSA RIBS BRACES ISPRUCE lID BALSA I/SD BALSA GUSSETS F SHEETING TO ISPARS V550 BOTTOM I/ASS I/3D PLY- IA IA SA D3GUSSETS WINGJ LEFTTIPRIGHT WINGTIP I/SoS/IA sHARD BALSA LE PIN SLOT BALSA WAW-3W2WI WIWO /W-3W-A I/IA C-GRAIN1/4 3/32 BALSA RIBSBALSA SPARSI/B BALSA3/3DI/B S/ID MEG BALSA TE GUSSETSBALSA SHEET 3/32 --L-oBALSA ENSCAPIX~ 3/A 5/B RAGSW-A2RESD3 DREG TRAILING EDGE STOCKI/A SO RUD INSTALL KILLSWITCHPI/IAoI/BBASARIBW-3DREG BAYTERYPERMANENTLY WIRED01REQ W-2DREG F MOTORSw -TRIM 232 ROB BOYTOB OP L E- GD REQ I/IA S/IA55 RIBS SlY FLAY ON BOORSW-IDO RED BATTERYPOSE GAHARD WOOD BENT PINALL BRACES I/3D PLY DETAILSMI/A BALSA S I/B HATCH 150 I/D HO WOODI/3DAL HATCH STOPBENT PINPLYSCREWS I/IA C-GRAIN BALSA PSSHBODS LS PLYsY-SIDESIDE OSTLI E VIEW DDNfZ5j SIA Ill~- ------ __ 1MOTHBAYYACEI 035F/SE 4TT IIFIN KEYES THRO STAB B/COO-1/16 BALSA CROSSI/BSO BALSA LONGERONS GRAIN TOP H BOTTOMAND CROSS BBACES HORT HORNS I/3D PLY SKIDMOTOR SW RS275-ISSS3/3D SHEET BALSA SIDES I/BoS/A 4IIELEO BALSA -CT IRCVRI U I/A l/D1/32 PLYHARDWOOD SKID fHARDWOOD FIREWALLI/R BALSA I/B PLY PD I/B BALSA P1 FUSELAGE TOP VIEW WATTS UP TOP AND BOTTOM SHEETING OMITTED FOR CLARITY R/C ELECTRIC POWERED GLIDER 0I2345A WING SPAN 52 WT 20 OZ AREA 365 SO I{ LOADING B OZ & DRAWN BY KEN MARRON IJiS R' TflF IJDMOBILU saddle elongate hole rat-tail file overdo filing snug fit desired Align wing perfectly drill two holes #4 self-tapping sheetmetal hold-down screws through rear hardwood hold-down block Covering Pick lightweight material model presented covered transparent yellow Solarfilm wing stab opaque orange fuselage tail Midnight blue used windows logo D&J striping finished off control horns cut down Carl Gold berg short horns attached CyA After sanding bottom removing covering material horn location flood area CyA harden wood Press horn place hold few moments its dry run bead CyA around sides make rivets mounting holes some CyA baking soda After covering rudder elevator attached using thread doubled over applied Figure 8 pattern shown use Solarfilm hinges described January 1983 MA page 49 Check balance point CG components temporarily place including pushrods CG correct position mount servos rails March 1984 35 1/16 BALSA VERTICAL GRAIN WEDS Above The complete fuselage sa,uu ru reaoy covering radio installation shouldnt weigh 25 oz Select wood carefully minimize weight Right Motor battery compartment must quite strong handle mass concentrated Balsa longerons 1/16 balsa doublers nose stiffen sides considerably motor actuated push-ON push-OFF switch Radio Shack #275-1555 full-down elevator applied Remove switch mounting nut discard Sand side switch will face fuse lage wall begin position Make sure turns off servo centered neutral Adjust switch trim transmitter until full-down elevator turns switch time tach CyA glue four sides wiring before installing radio Run antenna wire back through fuselage out through small hole made near rear Motor batteries GE AA cells used because high quality cost less two dollars GE C cells another good choice motor can also purchased complete batteries As shown motor-to-battery con nection made mini-alligator clips Radio Shack #270-378 rather servo-type plugs way plane can held hand unclipping removing power pack other hand pack used can wired permanently charging jack added ex ternally Miscellaneous comments Although made operate six cells motor works well four cells conditions calm plane usually flown way four cells weight goes down about 1 oz flatter glide results total powered altitude about same just takes longer get Since less current consumed run minute longer charged 12-volt source six cells should have resistor series two Radio Shack #271-311 I-ohm 10-watt resistors series work well Four cells should never charged 12 volts dropping resistor series Current never tapers off enough avoid damaging cells Instead connect two four-cell packs series 12-volt charging Dont overlook slow-charging 50 mA radio charging system equivalent Six cells charge well eight-cell transmitter output method has ad vantage allowing arrive fly ing field several pre-charged packs Dont overlook condition charging battery getting poor per formance system suspect weak charging battery first Finally no cooling exhaust slots used needed setup Since current draw low little heat generated dissipated Trimming flying new RC flying please seek out helpeven have travel far visit club one-time lesson several hours will greatly improve chances success Install 6-3 prop motor power pack Stuff foam padding around pack hook up yet As safety pre caution get habit range-checking electric-powered plane before installing Continued page 130 36 Model Aviation Fuselage alignment symmetry made ea sier using graph paper line drawn down center centerlines marked formers firewall Rubberbands model ing clamps help hold things tight gluing couple straightedges assure straight f use lage sides F-2 tail post Books hold sides place adding crosspieces brace further described text holds fuelage rear centerline aligning formers firewall paper clamp clothespins hold center Authors prototype wing under construction dihedral braces glue dries Shims trailing edge bottom spar pinned 1/32 ply provide correct spacing ribs place Ribs added LE and dihedral braces center sheeting RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA Electric flight challenge sport flier competitor alike Watts Up introduction should gratifying Happy landings Radio Technique/Myers Continued page 39 ing microscopic whiskers through sulating paper can blow out whis kers high-voltage charge really trust cells afterward dont So away workbench lot Chargemaster may prove fine tool Ace RC Inc Box 51 lE Higginsville MO 64037 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 [ writing advertisers mention t read about ModI Aviation J-3 has proven over years real crowd pleaserprobably because its good old J-3 fact touches ob servers plane built winter 1978-79 first flown March 3 latter year didnt know till later Bob Boucher Astro Flight design ing Porterfield same time two planes very similar date J-3 has accumulated 334 flights drop oil has soaked 150 depicted Fig 4 Prior 1980 keeping record flight time date number flights thats reason about half plotted Fig 4 obvious five-mm airplane can see vital statistics what details Heres some information about plane J-3 scratch-built using Sig plans guideline Since electricpowered knew plane itself lightweight rugged kit version glow engine would set about redrawing plans choosing construc tion techniques wood sizes consistent application also changed air foil 12/2% flat-bottom section Dihedral added lieu ailerons Result real charmer Admittedly 1-3 fair-weather flier does handle wind well defi nitely fun fly calm air typical flight starts small amount ground handling followed taxi takeoff Fol lowing climb-out back off proportional throttle cruise around Flybys snapbeautiful experience plane pussycat handling several times Ive nearly hypnotized myself flying myself Usually Ill some touch-and-goes two inside loops playing throttle control needed plane glides nicely note some longer lift-assisted flight times Fig 4 generally keep power whole flight varying amount de sired effect About third time have enough power left after landing taxi back pit area Otherwise power out have bring back dead-stick 1-3 good example inadequate battery cooling Im fourth battery heat reason time design construction what looked like good installation cooling has proved adequate Whatever knowledge may have Electrics has come cheaply 15-size motor used plane new version plane new so-called black back 15 current model Astro 15 rather different motor Ferrite 15 uses 12 cells 12 Ah may install someday get longer flights overall weight will increase about 9 oz estimate flight time should increase about 8-9 mm Look over vitals get general idea candidate designs around would perform comparably would require some modeling effort make suitable electric power J-3 example Astro Porterfield 132 Model Aviation Watts Up/MarronElectrics/Kopski Continued page 130 Continued paqe 44 jSSOATES INCNEW MO 13 N IS Dont bee stung AIDS CLOUD WAYHAYWARD CA 945S OS4ONCsalaENYA GUARANTEED CY NO 5310 Os l2O4cy NO 5317 HOT SHOT Hor~US PAT 4405890 Hand held rechargeable glow plug energizer size engine uses gtow plug Small enough carry yoijr shirt pocket Makes dry cell batteries power losing wires thing ot past Easy attachment cowd engines Reinforced extra hard use Can charged upto 1000 times Uses HEAD LOCK glow plug connector MODEL PRODUCTS CORP positive corinec tion tothe glow plug 90 day unconditional guarantee plus limited warranty up year Complete instructions charger Available dealer order direct Visa Mastercard accepted Add Si 50 postage power convenience $1995 Without charger $1595 b & r Hobbies PO Box 192 Oscoda MI 48750 [517] 7393549 Making Leisure Time Enjoyable
Edition: Model Aviation - 1984/03
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 130, 132
NO OCR TEXT tcnsr tin U IYCI 11SCULUIY uiUIiIu au.ty OIU IWIUbJtI SLrn*IP ity trars,.. s iuuiwuht showu. 11W IruGIur viny iiiely Adding same opaque covering fuselage wing usuu ~ion creates illusion wing two parts really wing one-piece structure Left A fully-charged 6-amp motorcycle battery adequate recharging motor power pack four five times Having just extra pack keeps down-time minimum author changing packs another flight Right easy access motor battery hatch removed Battery connected mini alligator clips easy one-hand attachment Fuse CyA-glued front battery partition Lert IJoT5 ne reiariunsnip uj inc muiur L wtw dllu riuc ciuvatol vu ncucvc WELL~ - c radio battery receiver wrapped ligntweugnt foam Right Using thin spruce spars webbing between produces strong light wing Three prototypes exist presented plans pictures has span 52 365 sq area 20-oz weight ready fly weight breakdown wing covered 35 oz fuselage tail covered 3 oz motor battery 75 oz radio 5 oz 100 mAb battery pack have much building experi ence should review article gluing techniques March 1983 MA before getting underway Wing construction Twenty ribs cut after making template A6 2 plywood can easily cut modeling knife template secured sheet light 76 C-grain balsa pins #11 X-Acto blade used cut around template Very uniform results achieved method Cover plan plastic film Begin building both main panels same time follows Pin straightedge plan along TE butt 5A-in TE pieces together centerline pin place Pin bottom 2 spruce spars plan after checking alignment notches ribs razor plane sanding block remove bottom LE edge facing building board approximately A2 will allow ribs sit flush plan Pin /4 sq LE place Use triangle assure vertical horizontal trueness glue ribs cyanoacrylate CyA except W-A B outermost W- ribs panel top spar installed later outer panels made same manner main section except spar /4 X 3A2 balsa glue W-l end caps just yet critical part building wing mak ing sure panels aligned properly joined dihedral An easy way achieve have two building boards such described February 1983 32 PAnr4l Aviation Elevator pushrod exits cleanly rear Carl Goldberg Models mini-horns used fuselage Radio antenna runs Nyrods Thread hinges operate freely fuselage length exits right sewn neatly give good appearance MNK tJLLJ UULJY- II NWIN s WHRIj WMN YULJrMM~JI j MALLV YLJLJN6Y TI4E AMA N RESTOI YOUFOR 5I BIKE RIDESIGATE TO FLYING -SAIL-SII- AS AMA-Z0 TOOFTI4AT INEVERBUILD -JOUSES -SCUBA -ALL OF THAT OF LEARN YOU WEREGREWA BEARD10 BOAT5- 1016BUTAMAKNO%VS WI4AT SEVENTYTflEY -DON TLOOKDTC4E5 FOR SALLMENASKEDMEICW~ATTVCEMEIIT COMEYOU DONT NT BLOCKS LOOK -B QLANES _____ 70 3/32 BALSA FIN-RUOCER AND ELEVATOR GOLDBERG SHORTHORN 1/16 SHEET TOP ANDBALSA FRAMING BY ELEVATOR SERwjBOTtOM CROSS GRAIN DONEL HOLD DOWNNO4 SCREWS 2 1/16 PLYWCXJO JOINT CLAMPDIHEDRAL./ 3/32 SHEET SIDING I/B SO FRAMED TIPS I/B LONGERONS1/8 BALSA SHEET WITH FIN SLOT 1/32 SHEET C/S TOPAND BOlTOM1/4 X V2 HOLD DOWN BLOCK FOR WING I/B SHEET HATCH ACE MICRO SERVOS1/16 SHEET WEBS 3A6X 5/16 TEDGE STOCK GUIDES 1/16 SHEET GUSSETS D3 I/32PLWOOD POLYHEDRAL BRACE NOSEV16 SHEET ALL RIBS MOTOR SCREWS2 I/32PLY SIID- NOSE TO Fl I/16BALSA FILLERSG E AA flLRIES 61I/4X 3/ 32 SPRUCE SPAR lOPAND BOTrOM ASTRO 035 ELECTRIC MOTOR3 MIN TILL KLU MA article Accurately hinge middle will always flat twist angle Prop up boards center panel spar bottoms 1 table sur face Bevel LE spars TE fit well joined angle Apply white glue edges join pan els pin place Glue top spar Cut front dihedral brace A2 ply install white glue Clamp clothespins setting up cut rear brace Note /16 narrower spar depth allow top bottom sheeting installing place spacer A2-in scrap under brace check see another A2-in scrap will come out flush top spar Trim needed glue clamp place Trim A2 top bottom ribs W-A B allow sheeting cut ribs two spar notches install using shims Glue W-A ribs other well wing parts Y32-in top sheeting V6-in verti cal grain shear webs installed next panels still pinned board prop up tips outer panels bottom spar li/s high Bevel ends glue place Next add V16-in corner gussets Y32 ply TE wing hold-down screws Sheet bottom center section /32 balsa Shape sand LE wing tips Add end caps finished wing should weigh about 25 oz Fuselage Cut two sides light weight straight-grained Y32 balsa similar density will curve evenly Clamp halves together clothespins using cardboard scraps proctect balsa denting sand identical shape triangle mark thie positions formers Fl F2 inside walls Cut Fl F2 A-in stiff balsa mark vertical centers Cut hard wood wing hold-down blocks bevel LE block per plan brace can fashioned scrap /6 balsa hold tail lining things up base made about 3-in sq notched vertical post 4 5 high 1 wide Put three rubberbands loosely around fuselage halves clip tail tem porary support clothespin Line up fuselage over top view plan pin support board Spread sides slide formers place Testfit hardwood pieces forward holddown should flush top rear should A6 top formers lined up over planvertical parallel other triangle shows fuselage sides square building board CyA-glue formers place Glue hardwood blocks white glue Cut out firewall Its much easier drill holes before cutting large sheet plywood Drill center 7A6-in-dia hole /s-in-dia motor mounting holes check motor fits properly air inlet holes formed drilling two A-in-dia holes side-by-side connecting enlarging rat-tail file Draw vertical line center firewall Pull sides nose padded C-clamp Apply white glue firewall edges install tween sides tighten clamp Make sure centerline matches plan firewall has no sidethrust about 20 downthrust Let dry thoroughly Remove board install longerons throughout CyA glue used no clamping needed Add /6 balsa fillers nose Put fuselage back over top view Place book side fuselage rest straightedge fuselage should perfectly straight F- 1 tail Apply CyA glue tail joint Install cross braces apply A6-in cross-grain top sheeting white glue stopping beginning stab loca tion Install pushrod outer sleeves apply A6-in cross-grain bottom sheeting Finish top sheeting hatch balsa Note hatch front rear nose sheeting beveled hold front hatch place catch made strips hardwood bent pin Add /32 ply skid Round off corners minimize square box look sand fuselage smooth Tail section stabilizer built three pieces over plan tips attached later LE TE center section x 3A6 balsa Pick hard piece LE piece soft enough push needle through sewing elevator hinges TE rest stab made sq lightweight balsa LB TE tips trimmed rounded after gussets added dry prop up tips /2-in bottom Bevel mating edges glue position fin rudder elevator cut medium weight straight-grained 2 balsa Cut slot stabilizer fin glue fin position after checking squareness stab tail assembly attached fuse lage white glue Take time assure trueness angles Wing mounting Check wing fit saddle mark its center Drill hole wing LB dihedral joint accommodate A-in hole peg slide wing place does sit flush 34 Model Aviation Before covering complete structure weighs 55 oz covering adds about 15 oz Spars inboard wing panels spruce strength tip panels use balsa lightness Assembled stabilizer other major parts laid out prior assembly plywood motor mount stack ribs timeconsuming pieces cut out FULL-SIZE PLANS AVAILABLE . SEE PAGE 170 I/B HOLD DOWN DOWEL 1/4 55 BALSA EADlNG EDGE / _____ 3 I/SDPL lW-BPOLYHEDRAL WIW-IjW IjjWWIW-IAS/-I1IWBiIWARUIWIWIWIW-BRA /32 PLYD2I/IA C-GRAIN WINGPLANTO PVIEWDIHEDRAL I/4oS/SDBALSA RIBS BRACES ISPRUCE lID BALSA I/SD BALSA GUSSETS F SHEETING TO ISPARS V550 BOTTOM I/ASS I/3D PLY- IA IA SA D3GUSSETS WINGJ LEFTTIPRIGHT WINGTIP I/SoS/IA sHARD BALSA LE PIN SLOT BALSA WAW-3W2WI WIWO /W-3W-A I/IA C-GRAIN1/4 3/32 BALSA RIBSBALSA SPARSI/B BALSA3/3DI/B S/ID MEG BALSA TE GUSSETSBALSA SHEET 3/32 --L-oBALSA ENSCAPIX~ 3/A 5/B RAGSW-A2RESD3 DREG TRAILING EDGE STOCKI/A SO RUD INSTALL KILLSWITCHPI/IAoI/BBASARIBW-3DREG BAYTERYPERMANENTLY WIRED01REQ W-2DREG F MOTORSw -TRIM 232 ROB BOYTOB OP L E- GD REQ I/IA S/IA55 RIBS SlY FLAY ON BOORSW-IDO RED BATTERYPOSE GAHARD WOOD BENT PINALL BRACES I/3D PLY DETAILSMI/A BALSA S I/B HATCH 150 I/D HO WOODI/3DAL HATCH STOPBENT PINPLYSCREWS I/IA C-GRAIN BALSA PSSHBODS LS PLYsY-SIDESIDE OSTLI E VIEW DDNfZ5j SIA Ill~- ------ __ 1MOTHBAYYACEI 035F/SE 4TT IIFIN KEYES THRO STAB B/COO-1/16 BALSA CROSSI/BSO BALSA LONGERONS GRAIN TOP H BOTTOMAND CROSS BBACES HORT HORNS I/3D PLY SKIDMOTOR SW RS275-ISSS3/3D SHEET BALSA SIDES I/BoS/A 4IIELEO BALSA -CT IRCVRI U I/A l/D1/32 PLYHARDWOOD SKID fHARDWOOD FIREWALLI/R BALSA I/B PLY PD I/B BALSA P1 FUSELAGE TOP VIEW WATTS UP TOP AND BOTTOM SHEETING OMITTED FOR CLARITY R/C ELECTRIC POWERED GLIDER 0I2345A WING SPAN 52 WT 20 OZ AREA 365 SO I{ LOADING B OZ & DRAWN BY KEN MARRON IJiS R' TflF IJDMOBILU saddle elongate hole rat-tail file overdo filing snug fit desired Align wing perfectly drill two holes #4 self-tapping sheetmetal hold-down screws through rear hardwood hold-down block Covering Pick lightweight material model presented covered transparent yellow Solarfilm wing stab opaque orange fuselage tail Midnight blue used windows logo D&J striping finished off control horns cut down Carl Gold berg short horns attached CyA After sanding bottom removing covering material horn location flood area CyA harden wood Press horn place hold few moments its dry run bead CyA around sides make rivets mounting holes some CyA baking soda After covering rudder elevator attached using thread doubled over applied Figure 8 pattern shown use Solarfilm hinges described January 1983 MA page 49 Check balance point CG components temporarily place including pushrods CG correct position mount servos rails March 1984 35 1/16 BALSA VERTICAL GRAIN WEDS Above The complete fuselage sa,uu ru reaoy covering radio installation shouldnt weigh 25 oz Select wood carefully minimize weight Right Motor battery compartment must quite strong handle mass concentrated Balsa longerons 1/16 balsa doublers nose stiffen sides considerably motor actuated push-ON push-OFF switch Radio Shack #275-1555 full-down elevator applied Remove switch mounting nut discard Sand side switch will face fuse lage wall begin position Make sure turns off servo centered neutral Adjust switch trim transmitter until full-down elevator turns switch time tach CyA glue four sides wiring before installing radio Run antenna wire back through fuselage out through small hole made near rear Motor batteries GE AA cells used because high quality cost less two dollars GE C cells another good choice motor can also purchased complete batteries As shown motor-to-battery con nection made mini-alligator clips Radio Shack #270-378 rather servo-type plugs way plane can held hand unclipping removing power pack other hand pack used can wired permanently charging jack added ex ternally Miscellaneous comments Although made operate six cells motor works well four cells conditions calm plane usually flown way four cells weight goes down about 1 oz flatter glide results total powered altitude about same just takes longer get Since less current consumed run minute longer charged 12-volt source six cells should have resistor series two Radio Shack #271-311 I-ohm 10-watt resistors series work well Four cells should never charged 12 volts dropping resistor series Current never tapers off enough avoid damaging cells Instead connect two four-cell packs series 12-volt charging Dont overlook slow-charging 50 mA radio charging system equivalent Six cells charge well eight-cell transmitter output method has ad vantage allowing arrive fly ing field several pre-charged packs Dont overlook condition charging battery getting poor per formance system suspect weak charging battery first Finally no cooling exhaust slots used needed setup Since current draw low little heat generated dissipated Trimming flying new RC flying please seek out helpeven have travel far visit club one-time lesson several hours will greatly improve chances success Install 6-3 prop motor power pack Stuff foam padding around pack hook up yet As safety pre caution get habit range-checking electric-powered plane before installing Continued page 130 36 Model Aviation Fuselage alignment symmetry made ea sier using graph paper line drawn down center centerlines marked formers firewall Rubberbands model ing clamps help hold things tight gluing couple straightedges assure straight f use lage sides F-2 tail post Books hold sides place adding crosspieces brace further described text holds fuelage rear centerline aligning formers firewall paper clamp clothespins hold center Authors prototype wing under construction dihedral braces glue dries Shims trailing edge bottom spar pinned 1/32 ply provide correct spacing ribs place Ribs added LE and dihedral braces center sheeting RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA Electric flight challenge sport flier competitor alike Watts Up introduction should gratifying Happy landings Radio Technique/Myers Continued page 39 ing microscopic whiskers through sulating paper can blow out whis kers high-voltage charge really trust cells afterward dont So away workbench lot Chargemaster may prove fine tool Ace RC Inc Box 51 lE Higginsville MO 64037 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 [ writing advertisers mention t read about ModI Aviation J-3 has proven over years real crowd pleaserprobably because its good old J-3 fact touches ob servers plane built winter 1978-79 first flown March 3 latter year didnt know till later Bob Boucher Astro Flight design ing Porterfield same time two planes very similar date J-3 has accumulated 334 flights drop oil has soaked 150 depicted Fig 4 Prior 1980 keeping record flight time date number flights thats reason about half plotted Fig 4 obvious five-mm airplane can see vital statistics what details Heres some information about plane J-3 scratch-built using Sig plans guideline Since electricpowered knew plane itself lightweight rugged kit version glow engine would set about redrawing plans choosing construc tion techniques wood sizes consistent application also changed air foil 12/2% flat-bottom section Dihedral added lieu ailerons Result real charmer Admittedly 1-3 fair-weather flier does handle wind well defi nitely fun fly calm air typical flight starts small amount ground handling followed taxi takeoff Fol lowing climb-out back off proportional throttle cruise around Flybys snapbeautiful experience plane pussycat handling several times Ive nearly hypnotized myself flying myself Usually Ill some touch-and-goes two inside loops playing throttle control needed plane glides nicely note some longer lift-assisted flight times Fig 4 generally keep power whole flight varying amount de sired effect About third time have enough power left after landing taxi back pit area Otherwise power out have bring back dead-stick 1-3 good example inadequate battery cooling Im fourth battery heat reason time design construction what looked like good installation cooling has proved adequate Whatever knowledge may have Electrics has come cheaply 15-size motor used plane new version plane new so-called black back 15 current model Astro 15 rather different motor Ferrite 15 uses 12 cells 12 Ah may install someday get longer flights overall weight will increase about 9 oz estimate flight time should increase about 8-9 mm Look over vitals get general idea candidate designs around would perform comparably would require some modeling effort make suitable electric power J-3 example Astro Porterfield 132 Model Aviation Watts Up/MarronElectrics/Kopski Continued page 130 Continued paqe 44 jSSOATES INCNEW MO 13 N IS Dont bee stung AIDS CLOUD WAYHAYWARD CA 945S OS4ONCsalaENYA GUARANTEED CY NO 5310 Os l2O4cy NO 5317 HOT SHOT Hor~US PAT 4405890 Hand held rechargeable glow plug energizer size engine uses gtow plug Small enough carry yoijr shirt pocket Makes dry cell batteries power losing wires thing ot past Easy attachment cowd engines Reinforced extra hard use Can charged upto 1000 times Uses HEAD LOCK glow plug connector MODEL PRODUCTS CORP positive corinec tion tothe glow plug 90 day unconditional guarantee plus limited warranty up year Complete instructions charger Available dealer order direct Visa Mastercard accepted Add Si 50 postage power convenience $1995 Without charger $1595 b & r Hobbies PO Box 192 Oscoda MI 48750 [517] 7393549 Making Leisure Time Enjoyable
Edition: Model Aviation - 1984/03
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 130, 132
NO OCR TEXT tcnsr tin U IYCI 11SCULUIY uiUIiIu au.ty OIU IWIUbJtI SLrn*IP ity trars,.. s iuuiwuht showu. 11W IruGIur viny iiiely Adding same opaque covering fuselage wing usuu ~ion creates illusion wing two parts really wing one-piece structure Left A fully-charged 6-amp motorcycle battery adequate recharging motor power pack four five times Having just extra pack keeps down-time minimum author changing packs another flight Right easy access motor battery hatch removed Battery connected mini alligator clips easy one-hand attachment Fuse CyA-glued front battery partition Lert IJoT5 ne reiariunsnip uj inc muiur L wtw dllu riuc ciuvatol vu ncucvc WELL~ - c radio battery receiver wrapped ligntweugnt foam Right Using thin spruce spars webbing between produces strong light wing Three prototypes exist presented plans pictures has span 52 365 sq area 20-oz weight ready fly weight breakdown wing covered 35 oz fuselage tail covered 3 oz motor battery 75 oz radio 5 oz 100 mAb battery pack have much building experi ence should review article gluing techniques March 1983 MA before getting underway Wing construction Twenty ribs cut after making template A6 2 plywood can easily cut modeling knife template secured sheet light 76 C-grain balsa pins #11 X-Acto blade used cut around template Very uniform results achieved method Cover plan plastic film Begin building both main panels same time follows Pin straightedge plan along TE butt 5A-in TE pieces together centerline pin place Pin bottom 2 spruce spars plan after checking alignment notches ribs razor plane sanding block remove bottom LE edge facing building board approximately A2 will allow ribs sit flush plan Pin /4 sq LE place Use triangle assure vertical horizontal trueness glue ribs cyanoacrylate CyA except W-A B outermost W- ribs panel top spar installed later outer panels made same manner main section except spar /4 X 3A2 balsa glue W-l end caps just yet critical part building wing mak ing sure panels aligned properly joined dihedral An easy way achieve have two building boards such described February 1983 32 PAnr4l Aviation Elevator pushrod exits cleanly rear Carl Goldberg Models mini-horns used fuselage Radio antenna runs Nyrods Thread hinges operate freely fuselage length exits right sewn neatly give good appearance MNK tJLLJ UULJY- II NWIN s WHRIj WMN YULJrMM~JI j MALLV YLJLJN6Y TI4E AMA N RESTOI YOUFOR 5I BIKE RIDESIGATE TO FLYING -SAIL-SII- AS AMA-Z0 TOOFTI4AT INEVERBUILD -JOUSES -SCUBA -ALL OF THAT OF LEARN YOU WEREGREWA BEARD10 BOAT5- 1016BUTAMAKNO%VS WI4AT SEVENTYTflEY -DON TLOOKDTC4E5 FOR SALLMENASKEDMEICW~ATTVCEMEIIT COMEYOU DONT NT BLOCKS LOOK -B QLANES _____ 70 3/32 BALSA FIN-RUOCER AND ELEVATOR GOLDBERG SHORTHORN 1/16 SHEET TOP ANDBALSA FRAMING BY ELEVATOR SERwjBOTtOM CROSS GRAIN DONEL HOLD DOWNNO4 SCREWS 2 1/16 PLYWCXJO JOINT CLAMPDIHEDRAL./ 3/32 SHEET SIDING I/B SO FRAMED TIPS I/B LONGERONS1/8 BALSA SHEET WITH FIN SLOT 1/32 SHEET C/S TOPAND BOlTOM1/4 X V2 HOLD DOWN BLOCK FOR WING I/B SHEET HATCH ACE MICRO SERVOS1/16 SHEET WEBS 3A6X 5/16 TEDGE STOCK GUIDES 1/16 SHEET GUSSETS D3 I/32PLWOOD POLYHEDRAL BRACE NOSEV16 SHEET ALL RIBS MOTOR SCREWS2 I/32PLY SIID- NOSE TO Fl I/16BALSA FILLERSG E AA flLRIES 61I/4X 3/ 32 SPRUCE SPAR lOPAND BOTrOM ASTRO 035 ELECTRIC MOTOR3 MIN TILL KLU MA article Accurately hinge middle will always flat twist angle Prop up boards center panel spar bottoms 1 table sur face Bevel LE spars TE fit well joined angle Apply white glue edges join pan els pin place Glue top spar Cut front dihedral brace A2 ply install white glue Clamp clothespins setting up cut rear brace Note /16 narrower spar depth allow top bottom sheeting installing place spacer A2-in scrap under brace check see another A2-in scrap will come out flush top spar Trim needed glue clamp place Trim A2 top bottom ribs W-A B allow sheeting cut ribs two spar notches install using shims Glue W-A ribs other well wing parts Y32-in top sheeting V6-in verti cal grain shear webs installed next panels still pinned board prop up tips outer panels bottom spar li/s high Bevel ends glue place Next add V16-in corner gussets Y32 ply TE wing hold-down screws Sheet bottom center section /32 balsa Shape sand LE wing tips Add end caps finished wing should weigh about 25 oz Fuselage Cut two sides light weight straight-grained Y32 balsa similar density will curve evenly Clamp halves together clothespins using cardboard scraps proctect balsa denting sand identical shape triangle mark thie positions formers Fl F2 inside walls Cut Fl F2 A-in stiff balsa mark vertical centers Cut hard wood wing hold-down blocks bevel LE block per plan brace can fashioned scrap /6 balsa hold tail lining things up base made about 3-in sq notched vertical post 4 5 high 1 wide Put three rubberbands loosely around fuselage halves clip tail tem porary support clothespin Line up fuselage over top view plan pin support board Spread sides slide formers place Testfit hardwood pieces forward holddown should flush top rear should A6 top formers lined up over planvertical parallel other triangle shows fuselage sides square building board CyA-glue formers place Glue hardwood blocks white glue Cut out firewall Its much easier drill holes before cutting large sheet plywood Drill center 7A6-in-dia hole /s-in-dia motor mounting holes check motor fits properly air inlet holes formed drilling two A-in-dia holes side-by-side connecting enlarging rat-tail file Draw vertical line center firewall Pull sides nose padded C-clamp Apply white glue firewall edges install tween sides tighten clamp Make sure centerline matches plan firewall has no sidethrust about 20 downthrust Let dry thoroughly Remove board install longerons throughout CyA glue used no clamping needed Add /6 balsa fillers nose Put fuselage back over top view Place book side fuselage rest straightedge fuselage should perfectly straight F- 1 tail Apply CyA glue tail joint Install cross braces apply A6-in cross-grain top sheeting white glue stopping beginning stab loca tion Install pushrod outer sleeves apply A6-in cross-grain bottom sheeting Finish top sheeting hatch balsa Note hatch front rear nose sheeting beveled hold front hatch place catch made strips hardwood bent pin Add /32 ply skid Round off corners minimize square box look sand fuselage smooth Tail section stabilizer built three pieces over plan tips attached later LE TE center section x 3A6 balsa Pick hard piece LE piece soft enough push needle through sewing elevator hinges TE rest stab made sq lightweight balsa LB TE tips trimmed rounded after gussets added dry prop up tips /2-in bottom Bevel mating edges glue position fin rudder elevator cut medium weight straight-grained 2 balsa Cut slot stabilizer fin glue fin position after checking squareness stab tail assembly attached fuse lage white glue Take time assure trueness angles Wing mounting Check wing fit saddle mark its center Drill hole wing LB dihedral joint accommodate A-in hole peg slide wing place does sit flush 34 Model Aviation Before covering complete structure weighs 55 oz covering adds about 15 oz Spars inboard wing panels spruce strength tip panels use balsa lightness Assembled stabilizer other major parts laid out prior assembly plywood motor mount stack ribs timeconsuming pieces cut out FULL-SIZE PLANS AVAILABLE . SEE PAGE 170 I/B HOLD DOWN DOWEL 1/4 55 BALSA EADlNG EDGE / _____ 3 I/SDPL lW-BPOLYHEDRAL WIW-IjW IjjWWIW-IAS/-I1IWBiIWARUIWIWIWIW-BRA /32 PLYD2I/IA C-GRAIN WINGPLANTO PVIEWDIHEDRAL I/4oS/SDBALSA RIBS BRACES ISPRUCE lID BALSA I/SD BALSA GUSSETS F SHEETING TO ISPARS V550 BOTTOM I/ASS I/3D PLY- IA IA SA D3GUSSETS WINGJ LEFTTIPRIGHT WINGTIP I/SoS/IA sHARD BALSA LE PIN SLOT BALSA WAW-3W2WI WIWO /W-3W-A I/IA C-GRAIN1/4 3/32 BALSA RIBSBALSA SPARSI/B BALSA3/3DI/B S/ID MEG BALSA TE GUSSETSBALSA SHEET 3/32 --L-oBALSA ENSCAPIX~ 3/A 5/B RAGSW-A2RESD3 DREG TRAILING EDGE STOCKI/A SO RUD INSTALL KILLSWITCHPI/IAoI/BBASARIBW-3DREG BAYTERYPERMANENTLY WIRED01REQ W-2DREG F MOTORSw -TRIM 232 ROB BOYTOB OP L E- GD REQ I/IA S/IA55 RIBS SlY FLAY ON BOORSW-IDO RED BATTERYPOSE GAHARD WOOD BENT PINALL BRACES I/3D PLY DETAILSMI/A BALSA S I/B HATCH 150 I/D HO WOODI/3DAL HATCH STOPBENT PINPLYSCREWS I/IA C-GRAIN BALSA PSSHBODS LS PLYsY-SIDESIDE OSTLI E VIEW DDNfZ5j SIA Ill~- ------ __ 1MOTHBAYYACEI 035F/SE 4TT IIFIN KEYES THRO STAB B/COO-1/16 BALSA CROSSI/BSO BALSA LONGERONS GRAIN TOP H BOTTOMAND CROSS BBACES HORT HORNS I/3D PLY SKIDMOTOR SW RS275-ISSS3/3D SHEET BALSA SIDES I/BoS/A 4IIELEO BALSA -CT IRCVRI U I/A l/D1/32 PLYHARDWOOD SKID fHARDWOOD FIREWALLI/R BALSA I/B PLY PD I/B BALSA P1 FUSELAGE TOP VIEW WATTS UP TOP AND BOTTOM SHEETING OMITTED FOR CLARITY R/C ELECTRIC POWERED GLIDER 0I2345A WING SPAN 52 WT 20 OZ AREA 365 SO I{ LOADING B OZ & DRAWN BY KEN MARRON IJiS R' TflF IJDMOBILU saddle elongate hole rat-tail file overdo filing snug fit desired Align wing perfectly drill two holes #4 self-tapping sheetmetal hold-down screws through rear hardwood hold-down block Covering Pick lightweight material model presented covered transparent yellow Solarfilm wing stab opaque orange fuselage tail Midnight blue used windows logo D&J striping finished off control horns cut down Carl Gold berg short horns attached CyA After sanding bottom removing covering material horn location flood area CyA harden wood Press horn place hold few moments its dry run bead CyA around sides make rivets mounting holes some CyA baking soda After covering rudder elevator attached using thread doubled over applied Figure 8 pattern shown use Solarfilm hinges described January 1983 MA page 49 Check balance point CG components temporarily place including pushrods CG correct position mount servos rails March 1984 35 1/16 BALSA VERTICAL GRAIN WEDS Above The complete fuselage sa,uu ru reaoy covering radio installation shouldnt weigh 25 oz Select wood carefully minimize weight Right Motor battery compartment must quite strong handle mass concentrated Balsa longerons 1/16 balsa doublers nose stiffen sides considerably motor actuated push-ON push-OFF switch Radio Shack #275-1555 full-down elevator applied Remove switch mounting nut discard Sand side switch will face fuse lage wall begin position Make sure turns off servo centered neutral Adjust switch trim transmitter until full-down elevator turns switch time tach CyA glue four sides wiring before installing radio Run antenna wire back through fuselage out through small hole made near rear Motor batteries GE AA cells used because high quality cost less two dollars GE C cells another good choice motor can also purchased complete batteries As shown motor-to-battery con nection made mini-alligator clips Radio Shack #270-378 rather servo-type plugs way plane can held hand unclipping removing power pack other hand pack used can wired permanently charging jack added ex ternally Miscellaneous comments Although made operate six cells motor works well four cells conditions calm plane usually flown way four cells weight goes down about 1 oz flatter glide results total powered altitude about same just takes longer get Since less current consumed run minute longer charged 12-volt source six cells should have resistor series two Radio Shack #271-311 I-ohm 10-watt resistors series work well Four cells should never charged 12 volts dropping resistor series Current never tapers off enough avoid damaging cells Instead connect two four-cell packs series 12-volt charging Dont overlook slow-charging 50 mA radio charging system equivalent Six cells charge well eight-cell transmitter output method has ad vantage allowing arrive fly ing field several pre-charged packs Dont overlook condition charging battery getting poor per formance system suspect weak charging battery first Finally no cooling exhaust slots used needed setup Since current draw low little heat generated dissipated Trimming flying new RC flying please seek out helpeven have travel far visit club one-time lesson several hours will greatly improve chances success Install 6-3 prop motor power pack Stuff foam padding around pack hook up yet As safety pre caution get habit range-checking electric-powered plane before installing Continued page 130 36 Model Aviation Fuselage alignment symmetry made ea sier using graph paper line drawn down center centerlines marked formers firewall Rubberbands model ing clamps help hold things tight gluing couple straightedges assure straight f use lage sides F-2 tail post Books hold sides place adding crosspieces brace further described text holds fuelage rear centerline aligning formers firewall paper clamp clothespins hold center Authors prototype wing under construction dihedral braces glue dries Shims trailing edge bottom spar pinned 1/32 ply provide correct spacing ribs place Ribs added LE and dihedral braces center sheeting RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA Electric flight challenge sport flier competitor alike Watts Up introduction should gratifying Happy landings Radio Technique/Myers Continued page 39 ing microscopic whiskers through sulating paper can blow out whis kers high-voltage charge really trust cells afterward dont So away workbench lot Chargemaster may prove fine tool Ace RC Inc Box 51 lE Higginsville MO 64037 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 [ writing advertisers mention t read about ModI Aviation J-3 has proven over years real crowd pleaserprobably because its good old J-3 fact touches ob servers plane built winter 1978-79 first flown March 3 latter year didnt know till later Bob Boucher Astro Flight design ing Porterfield same time two planes very similar date J-3 has accumulated 334 flights drop oil has soaked 150 depicted Fig 4 Prior 1980 keeping record flight time date number flights thats reason about half plotted Fig 4 obvious five-mm airplane can see vital statistics what details Heres some information about plane J-3 scratch-built using Sig plans guideline Since electricpowered knew plane itself lightweight rugged kit version glow engine would set about redrawing plans choosing construc tion techniques wood sizes consistent application also changed air foil 12/2% flat-bottom section Dihedral added lieu ailerons Result real charmer Admittedly 1-3 fair-weather flier does handle wind well defi nitely fun fly calm air typical flight starts small amount ground handling followed taxi takeoff Fol lowing climb-out back off proportional throttle cruise around Flybys snapbeautiful experience plane pussycat handling several times Ive nearly hypnotized myself flying myself Usually Ill some touch-and-goes two inside loops playing throttle control needed plane glides nicely note some longer lift-assisted flight times Fig 4 generally keep power whole flight varying amount de sired effect About third time have enough power left after landing taxi back pit area Otherwise power out have bring back dead-stick 1-3 good example inadequate battery cooling Im fourth battery heat reason time design construction what looked like good installation cooling has proved adequate Whatever knowledge may have Electrics has come cheaply 15-size motor used plane new version plane new so-called black back 15 current model Astro 15 rather different motor Ferrite 15 uses 12 cells 12 Ah may install someday get longer flights overall weight will increase about 9 oz estimate flight time should increase about 8-9 mm Look over vitals get general idea candidate designs around would perform comparably would require some modeling effort make suitable electric power J-3 example Astro Porterfield 132 Model Aviation Watts Up/MarronElectrics/Kopski Continued page 130 Continued paqe 44 jSSOATES INCNEW MO 13 N IS Dont bee stung AIDS CLOUD WAYHAYWARD CA 945S OS4ONCsalaENYA GUARANTEED CY NO 5310 Os l2O4cy NO 5317 HOT SHOT Hor~US PAT 4405890 Hand held rechargeable glow plug energizer size engine uses gtow plug Small enough carry yoijr shirt pocket Makes dry cell batteries power losing wires thing ot past Easy attachment cowd engines Reinforced extra hard use Can charged upto 1000 times Uses HEAD LOCK glow plug connector MODEL PRODUCTS CORP positive corinec tion tothe glow plug 90 day unconditional guarantee plus limited warranty up year Complete instructions charger Available dealer order direct Visa Mastercard accepted Add Si 50 postage power convenience $1995 Without charger $1595 b & r Hobbies PO Box 192 Oscoda MI 48750 [517] 7393549 Making Leisure Time Enjoyable
Edition: Model Aviation - 1984/03
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 130, 132
NO OCR TEXT tcnsr tin U IYCI 11SCULUIY uiUIiIu au.ty OIU IWIUbJtI SLrn*IP ity trars,.. s iuuiwuht showu. 11W IruGIur viny iiiely Adding same opaque covering fuselage wing usuu ~ion creates illusion wing two parts really wing one-piece structure Left A fully-charged 6-amp motorcycle battery adequate recharging motor power pack four five times Having just extra pack keeps down-time minimum author changing packs another flight Right easy access motor battery hatch removed Battery connected mini alligator clips easy one-hand attachment Fuse CyA-glued front battery partition Lert IJoT5 ne reiariunsnip uj inc muiur L wtw dllu riuc ciuvatol vu ncucvc WELL~ - c radio battery receiver wrapped ligntweugnt foam Right Using thin spruce spars webbing between produces strong light wing Three prototypes exist presented plans pictures has span 52 365 sq area 20-oz weight ready fly weight breakdown wing covered 35 oz fuselage tail covered 3 oz motor battery 75 oz radio 5 oz 100 mAb battery pack have much building experi ence should review article gluing techniques March 1983 MA before getting underway Wing construction Twenty ribs cut after making template A6 2 plywood can easily cut modeling knife template secured sheet light 76 C-grain balsa pins #11 X-Acto blade used cut around template Very uniform results achieved method Cover plan plastic film Begin building both main panels same time follows Pin straightedge plan along TE butt 5A-in TE pieces together centerline pin place Pin bottom 2 spruce spars plan after checking alignment notches ribs razor plane sanding block remove bottom LE edge facing building board approximately A2 will allow ribs sit flush plan Pin /4 sq LE place Use triangle assure vertical horizontal trueness glue ribs cyanoacrylate CyA except W-A B outermost W- ribs panel top spar installed later outer panels made same manner main section except spar /4 X 3A2 balsa glue W-l end caps just yet critical part building wing mak ing sure panels aligned properly joined dihedral An easy way achieve have two building boards such described February 1983 32 PAnr4l Aviation Elevator pushrod exits cleanly rear Carl Goldberg Models mini-horns used fuselage Radio antenna runs Nyrods Thread hinges operate freely fuselage length exits right sewn neatly give good appearance MNK tJLLJ UULJY- II NWIN s WHRIj WMN YULJrMM~JI j MALLV YLJLJN6Y TI4E AMA N RESTOI YOUFOR 5I BIKE RIDESIGATE TO FLYING -SAIL-SII- AS AMA-Z0 TOOFTI4AT INEVERBUILD -JOUSES -SCUBA -ALL OF THAT OF LEARN YOU WEREGREWA BEARD10 BOAT5- 1016BUTAMAKNO%VS WI4AT SEVENTYTflEY -DON TLOOKDTC4E5 FOR SALLMENASKEDMEICW~ATTVCEMEIIT COMEYOU DONT NT BLOCKS LOOK -B QLANES _____ 70 3/32 BALSA FIN-RUOCER AND ELEVATOR GOLDBERG SHORTHORN 1/16 SHEET TOP ANDBALSA FRAMING BY ELEVATOR SERwjBOTtOM CROSS GRAIN DONEL HOLD DOWNNO4 SCREWS 2 1/16 PLYWCXJO JOINT CLAMPDIHEDRAL./ 3/32 SHEET SIDING I/B SO FRAMED TIPS I/B LONGERONS1/8 BALSA SHEET WITH FIN SLOT 1/32 SHEET C/S TOPAND BOlTOM1/4 X V2 HOLD DOWN BLOCK FOR WING I/B SHEET HATCH ACE MICRO SERVOS1/16 SHEET WEBS 3A6X 5/16 TEDGE STOCK GUIDES 1/16 SHEET GUSSETS D3 I/32PLWOOD POLYHEDRAL BRACE NOSEV16 SHEET ALL RIBS MOTOR SCREWS2 I/32PLY SIID- NOSE TO Fl I/16BALSA FILLERSG E AA flLRIES 61I/4X 3/ 32 SPRUCE SPAR lOPAND BOTrOM ASTRO 035 ELECTRIC MOTOR3 MIN TILL KLU MA article Accurately hinge middle will always flat twist angle Prop up boards center panel spar bottoms 1 table sur face Bevel LE spars TE fit well joined angle Apply white glue edges join pan els pin place Glue top spar Cut front dihedral brace A2 ply install white glue Clamp clothespins setting up cut rear brace Note /16 narrower spar depth allow top bottom sheeting installing place spacer A2-in scrap under brace check see another A2-in scrap will come out flush top spar Trim needed glue clamp place Trim A2 top bottom ribs W-A B allow sheeting cut ribs two spar notches install using shims Glue W-A ribs other well wing parts Y32-in top sheeting V6-in verti cal grain shear webs installed next panels still pinned board prop up tips outer panels bottom spar li/s high Bevel ends glue place Next add V16-in corner gussets Y32 ply TE wing hold-down screws Sheet bottom center section /32 balsa Shape sand LE wing tips Add end caps finished wing should weigh about 25 oz Fuselage Cut two sides light weight straight-grained Y32 balsa similar density will curve evenly Clamp halves together clothespins using cardboard scraps proctect balsa denting sand identical shape triangle mark thie positions formers Fl F2 inside walls Cut Fl F2 A-in stiff balsa mark vertical centers Cut hard wood wing hold-down blocks bevel LE block per plan brace can fashioned scrap /6 balsa hold tail lining things up base made about 3-in sq notched vertical post 4 5 high 1 wide Put three rubberbands loosely around fuselage halves clip tail tem porary support clothespin Line up fuselage over top view plan pin support board Spread sides slide formers place Testfit hardwood pieces forward holddown should flush top rear should A6 top formers lined up over planvertical parallel other triangle shows fuselage sides square building board CyA-glue formers place Glue hardwood blocks white glue Cut out firewall Its much easier drill holes before cutting large sheet plywood Drill center 7A6-in-dia hole /s-in-dia motor mounting holes check motor fits properly air inlet holes formed drilling two A-in-dia holes side-by-side connecting enlarging rat-tail file Draw vertical line center firewall Pull sides nose padded C-clamp Apply white glue firewall edges install tween sides tighten clamp Make sure centerline matches plan firewall has no sidethrust about 20 downthrust Let dry thoroughly Remove board install longerons throughout CyA glue used no clamping needed Add /6 balsa fillers nose Put fuselage back over top view Place book side fuselage rest straightedge fuselage should perfectly straight F- 1 tail Apply CyA glue tail joint Install cross braces apply A6-in cross-grain top sheeting white glue stopping beginning stab loca tion Install pushrod outer sleeves apply A6-in cross-grain bottom sheeting Finish top sheeting hatch balsa Note hatch front rear nose sheeting beveled hold front hatch place catch made strips hardwood bent pin Add /32 ply skid Round off corners minimize square box look sand fuselage smooth Tail section stabilizer built three pieces over plan tips attached later LE TE center section x 3A6 balsa Pick hard piece LE piece soft enough push needle through sewing elevator hinges TE rest stab made sq lightweight balsa LB TE tips trimmed rounded after gussets added dry prop up tips /2-in bottom Bevel mating edges glue position fin rudder elevator cut medium weight straight-grained 2 balsa Cut slot stabilizer fin glue fin position after checking squareness stab tail assembly attached fuse lage white glue Take time assure trueness angles Wing mounting Check wing fit saddle mark its center Drill hole wing LB dihedral joint accommodate A-in hole peg slide wing place does sit flush 34 Model Aviation Before covering complete structure weighs 55 oz covering adds about 15 oz Spars inboard wing panels spruce strength tip panels use balsa lightness Assembled stabilizer other major parts laid out prior assembly plywood motor mount stack ribs timeconsuming pieces cut out FULL-SIZE PLANS AVAILABLE . SEE PAGE 170 I/B HOLD DOWN DOWEL 1/4 55 BALSA EADlNG EDGE / _____ 3 I/SDPL lW-BPOLYHEDRAL WIW-IjW IjjWWIW-IAS/-I1IWBiIWARUIWIWIWIW-BRA /32 PLYD2I/IA C-GRAIN WINGPLANTO PVIEWDIHEDRAL I/4oS/SDBALSA RIBS BRACES ISPRUCE lID BALSA I/SD BALSA GUSSETS F SHEETING TO ISPARS V550 BOTTOM I/ASS I/3D PLY- IA IA SA D3GUSSETS WINGJ LEFTTIPRIGHT WINGTIP I/SoS/IA sHARD BALSA LE PIN SLOT BALSA WAW-3W2WI WIWO /W-3W-A I/IA C-GRAIN1/4 3/32 BALSA RIBSBALSA SPARSI/B BALSA3/3DI/B S/ID MEG BALSA TE GUSSETSBALSA SHEET 3/32 --L-oBALSA ENSCAPIX~ 3/A 5/B RAGSW-A2RESD3 DREG TRAILING EDGE STOCKI/A SO RUD INSTALL KILLSWITCHPI/IAoI/BBASARIBW-3DREG BAYTERYPERMANENTLY WIRED01REQ W-2DREG F MOTORSw -TRIM 232 ROB BOYTOB OP L E- GD REQ I/IA S/IA55 RIBS SlY FLAY ON BOORSW-IDO RED BATTERYPOSE GAHARD WOOD BENT PINALL BRACES I/3D PLY DETAILSMI/A BALSA S I/B HATCH 150 I/D HO WOODI/3DAL HATCH STOPBENT PINPLYSCREWS I/IA C-GRAIN BALSA PSSHBODS LS PLYsY-SIDESIDE OSTLI E VIEW DDNfZ5j SIA Ill~- ------ __ 1MOTHBAYYACEI 035F/SE 4TT IIFIN KEYES THRO STAB B/COO-1/16 BALSA CROSSI/BSO BALSA LONGERONS GRAIN TOP H BOTTOMAND CROSS BBACES HORT HORNS I/3D PLY SKIDMOTOR SW RS275-ISSS3/3D SHEET BALSA SIDES I/BoS/A 4IIELEO BALSA -CT IRCVRI U I/A l/D1/32 PLYHARDWOOD SKID fHARDWOOD FIREWALLI/R BALSA I/B PLY PD I/B BALSA P1 FUSELAGE TOP VIEW WATTS UP TOP AND BOTTOM SHEETING OMITTED FOR CLARITY R/C ELECTRIC POWERED GLIDER 0I2345A WING SPAN 52 WT 20 OZ AREA 365 SO I{ LOADING B OZ & DRAWN BY KEN MARRON IJiS R' TflF IJDMOBILU saddle elongate hole rat-tail file overdo filing snug fit desired Align wing perfectly drill two holes #4 self-tapping sheetmetal hold-down screws through rear hardwood hold-down block Covering Pick lightweight material model presented covered transparent yellow Solarfilm wing stab opaque orange fuselage tail Midnight blue used windows logo D&J striping finished off control horns cut down Carl Gold berg short horns attached CyA After sanding bottom removing covering material horn location flood area CyA harden wood Press horn place hold few moments its dry run bead CyA around sides make rivets mounting holes some CyA baking soda After covering rudder elevator attached using thread doubled over applied Figure 8 pattern shown use Solarfilm hinges described January 1983 MA page 49 Check balance point CG components temporarily place including pushrods CG correct position mount servos rails March 1984 35 1/16 BALSA VERTICAL GRAIN WEDS Above The complete fuselage sa,uu ru reaoy covering radio installation shouldnt weigh 25 oz Select wood carefully minimize weight Right Motor battery compartment must quite strong handle mass concentrated Balsa longerons 1/16 balsa doublers nose stiffen sides considerably motor actuated push-ON push-OFF switch Radio Shack #275-1555 full-down elevator applied Remove switch mounting nut discard Sand side switch will face fuse lage wall begin position Make sure turns off servo centered neutral Adjust switch trim transmitter until full-down elevator turns switch time tach CyA glue four sides wiring before installing radio Run antenna wire back through fuselage out through small hole made near rear Motor batteries GE AA cells used because high quality cost less two dollars GE C cells another good choice motor can also purchased complete batteries As shown motor-to-battery con nection made mini-alligator clips Radio Shack #270-378 rather servo-type plugs way plane can held hand unclipping removing power pack other hand pack used can wired permanently charging jack added ex ternally Miscellaneous comments Although made operate six cells motor works well four cells conditions calm plane usually flown way four cells weight goes down about 1 oz flatter glide results total powered altitude about same just takes longer get Since less current consumed run minute longer charged 12-volt source six cells should have resistor series two Radio Shack #271-311 I-ohm 10-watt resistors series work well Four cells should never charged 12 volts dropping resistor series Current never tapers off enough avoid damaging cells Instead connect two four-cell packs series 12-volt charging Dont overlook slow-charging 50 mA radio charging system equivalent Six cells charge well eight-cell transmitter output method has ad vantage allowing arrive fly ing field several pre-charged packs Dont overlook condition charging battery getting poor per formance system suspect weak charging battery first Finally no cooling exhaust slots used needed setup Since current draw low little heat generated dissipated Trimming flying new RC flying please seek out helpeven have travel far visit club one-time lesson several hours will greatly improve chances success Install 6-3 prop motor power pack Stuff foam padding around pack hook up yet As safety pre caution get habit range-checking electric-powered plane before installing Continued page 130 36 Model Aviation Fuselage alignment symmetry made ea sier using graph paper line drawn down center centerlines marked formers firewall Rubberbands model ing clamps help hold things tight gluing couple straightedges assure straight f use lage sides F-2 tail post Books hold sides place adding crosspieces brace further described text holds fuelage rear centerline aligning formers firewall paper clamp clothespins hold center Authors prototype wing under construction dihedral braces glue dries Shims trailing edge bottom spar pinned 1/32 ply provide correct spacing ribs place Ribs added LE and dihedral braces center sheeting RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA Electric flight challenge sport flier competitor alike Watts Up introduction should gratifying Happy landings Radio Technique/Myers Continued page 39 ing microscopic whiskers through sulating paper can blow out whis kers high-voltage charge really trust cells afterward dont So away workbench lot Chargemaster may prove fine tool Ace RC Inc Box 51 lE Higginsville MO 64037 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 [ writing advertisers mention t read about ModI Aviation J-3 has proven over years real crowd pleaserprobably because its good old J-3 fact touches ob servers plane built winter 1978-79 first flown March 3 latter year didnt know till later Bob Boucher Astro Flight design ing Porterfield same time two planes very similar date J-3 has accumulated 334 flights drop oil has soaked 150 depicted Fig 4 Prior 1980 keeping record flight time date number flights thats reason about half plotted Fig 4 obvious five-mm airplane can see vital statistics what details Heres some information about plane J-3 scratch-built using Sig plans guideline Since electricpowered knew plane itself lightweight rugged kit version glow engine would set about redrawing plans choosing construc tion techniques wood sizes consistent application also changed air foil 12/2% flat-bottom section Dihedral added lieu ailerons Result real charmer Admittedly 1-3 fair-weather flier does handle wind well defi nitely fun fly calm air typical flight starts small amount ground handling followed taxi takeoff Fol lowing climb-out back off proportional throttle cruise around Flybys snapbeautiful experience plane pussycat handling several times Ive nearly hypnotized myself flying myself Usually Ill some touch-and-goes two inside loops playing throttle control needed plane glides nicely note some longer lift-assisted flight times Fig 4 generally keep power whole flight varying amount de sired effect About third time have enough power left after landing taxi back pit area Otherwise power out have bring back dead-stick 1-3 good example inadequate battery cooling Im fourth battery heat reason time design construction what looked like good installation cooling has proved adequate Whatever knowledge may have Electrics has come cheaply 15-size motor used plane new version plane new so-called black back 15 current model Astro 15 rather different motor Ferrite 15 uses 12 cells 12 Ah may install someday get longer flights overall weight will increase about 9 oz estimate flight time should increase about 8-9 mm Look over vitals get general idea candidate designs around would perform comparably would require some modeling effort make suitable electric power J-3 example Astro Porterfield 132 Model Aviation Watts Up/MarronElectrics/Kopski Continued page 130 Continued paqe 44 jSSOATES INCNEW MO 13 N IS Dont bee stung AIDS CLOUD WAYHAYWARD CA 945S OS4ONCsalaENYA GUARANTEED CY NO 5310 Os l2O4cy NO 5317 HOT SHOT Hor~US PAT 4405890 Hand held rechargeable glow plug energizer size engine uses gtow plug Small enough carry yoijr shirt pocket Makes dry cell batteries power losing wires thing ot past Easy attachment cowd engines Reinforced extra hard use Can charged upto 1000 times Uses HEAD LOCK glow plug connector MODEL PRODUCTS CORP positive corinec tion tothe glow plug 90 day unconditional guarantee plus limited warranty up year Complete instructions charger Available dealer order direct Visa Mastercard accepted Add Si 50 postage power convenience $1995 Without charger $1595 b & r Hobbies PO Box 192 Oscoda MI 48750 [517] 7393549 Making Leisure Time Enjoyable
Edition: Model Aviation - 1984/03
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 130, 132
NO OCR TEXT tcnsr tin U IYCI 11SCULUIY uiUIiIu au.ty OIU IWIUbJtI SLrn*IP ity trars,.. s iuuiwuht showu. 11W IruGIur viny iiiely Adding same opaque covering fuselage wing usuu ~ion creates illusion wing two parts really wing one-piece structure Left A fully-charged 6-amp motorcycle battery adequate recharging motor power pack four five times Having just extra pack keeps down-time minimum author changing packs another flight Right easy access motor battery hatch removed Battery connected mini alligator clips easy one-hand attachment Fuse CyA-glued front battery partition Lert IJoT5 ne reiariunsnip uj inc muiur L wtw dllu riuc ciuvatol vu ncucvc WELL~ - c radio battery receiver wrapped ligntweugnt foam Right Using thin spruce spars webbing between produces strong light wing Three prototypes exist presented plans pictures has span 52 365 sq area 20-oz weight ready fly weight breakdown wing covered 35 oz fuselage tail covered 3 oz motor battery 75 oz radio 5 oz 100 mAb battery pack have much building experi ence should review article gluing techniques March 1983 MA before getting underway Wing construction Twenty ribs cut after making template A6 2 plywood can easily cut modeling knife template secured sheet light 76 C-grain balsa pins #11 X-Acto blade used cut around template Very uniform results achieved method Cover plan plastic film Begin building both main panels same time follows Pin straightedge plan along TE butt 5A-in TE pieces together centerline pin place Pin bottom 2 spruce spars plan after checking alignment notches ribs razor plane sanding block remove bottom LE edge facing building board approximately A2 will allow ribs sit flush plan Pin /4 sq LE place Use triangle assure vertical horizontal trueness glue ribs cyanoacrylate CyA except W-A B outermost W- ribs panel top spar installed later outer panels made same manner main section except spar /4 X 3A2 balsa glue W-l end caps just yet critical part building wing mak ing sure panels aligned properly joined dihedral An easy way achieve have two building boards such described February 1983 32 PAnr4l Aviation Elevator pushrod exits cleanly rear Carl Goldberg Models mini-horns used fuselage Radio antenna runs Nyrods Thread hinges operate freely fuselage length exits right sewn neatly give good appearance MNK tJLLJ UULJY- II NWIN s WHRIj WMN YULJrMM~JI j MALLV YLJLJN6Y TI4E AMA N RESTOI YOUFOR 5I BIKE RIDESIGATE TO FLYING -SAIL-SII- AS AMA-Z0 TOOFTI4AT INEVERBUILD -JOUSES -SCUBA -ALL OF THAT OF LEARN YOU WEREGREWA BEARD10 BOAT5- 1016BUTAMAKNO%VS WI4AT SEVENTYTflEY -DON TLOOKDTC4E5 FOR SALLMENASKEDMEICW~ATTVCEMEIIT COMEYOU DONT NT BLOCKS LOOK -B QLANES _____ 70 3/32 BALSA FIN-RUOCER AND ELEVATOR GOLDBERG SHORTHORN 1/16 SHEET TOP ANDBALSA FRAMING BY ELEVATOR SERwjBOTtOM CROSS GRAIN DONEL HOLD DOWNNO4 SCREWS 2 1/16 PLYWCXJO JOINT CLAMPDIHEDRAL./ 3/32 SHEET SIDING I/B SO FRAMED TIPS I/B LONGERONS1/8 BALSA SHEET WITH FIN SLOT 1/32 SHEET C/S TOPAND BOlTOM1/4 X V2 HOLD DOWN BLOCK FOR WING I/B SHEET HATCH ACE MICRO SERVOS1/16 SHEET WEBS 3A6X 5/16 TEDGE STOCK GUIDES 1/16 SHEET GUSSETS D3 I/32PLWOOD POLYHEDRAL BRACE NOSEV16 SHEET ALL RIBS MOTOR SCREWS2 I/32PLY SIID- NOSE TO Fl I/16BALSA FILLERSG E AA flLRIES 61I/4X 3/ 32 SPRUCE SPAR lOPAND BOTrOM ASTRO 035 ELECTRIC MOTOR3 MIN TILL KLU MA article Accurately hinge middle will always flat twist angle Prop up boards center panel spar bottoms 1 table sur face Bevel LE spars TE fit well joined angle Apply white glue edges join pan els pin place Glue top spar Cut front dihedral brace A2 ply install white glue Clamp clothespins setting up cut rear brace Note /16 narrower spar depth allow top bottom sheeting installing place spacer A2-in scrap under brace check see another A2-in scrap will come out flush top spar Trim needed glue clamp place Trim A2 top bottom ribs W-A B allow sheeting cut ribs two spar notches install using shims Glue W-A ribs other well wing parts Y32-in top sheeting V6-in verti cal grain shear webs installed next panels still pinned board prop up tips outer panels bottom spar li/s high Bevel ends glue place Next add V16-in corner gussets Y32 ply TE wing hold-down screws Sheet bottom center section /32 balsa Shape sand LE wing tips Add end caps finished wing should weigh about 25 oz Fuselage Cut two sides light weight straight-grained Y32 balsa similar density will curve evenly Clamp halves together clothespins using cardboard scraps proctect balsa denting sand identical shape triangle mark thie positions formers Fl F2 inside walls Cut Fl F2 A-in stiff balsa mark vertical centers Cut hard wood wing hold-down blocks bevel LE block per plan brace can fashioned scrap /6 balsa hold tail lining things up base made about 3-in sq notched vertical post 4 5 high 1 wide Put three rubberbands loosely around fuselage halves clip tail tem porary support clothespin Line up fuselage over top view plan pin support board Spread sides slide formers place Testfit hardwood pieces forward holddown should flush top rear should A6 top formers lined up over planvertical parallel other triangle shows fuselage sides square building board CyA-glue formers place Glue hardwood blocks white glue Cut out firewall Its much easier drill holes before cutting large sheet plywood Drill center 7A6-in-dia hole /s-in-dia motor mounting holes check motor fits properly air inlet holes formed drilling two A-in-dia holes side-by-side connecting enlarging rat-tail file Draw vertical line center firewall Pull sides nose padded C-clamp Apply white glue firewall edges install tween sides tighten clamp Make sure centerline matches plan firewall has no sidethrust about 20 downthrust Let dry thoroughly Remove board install longerons throughout CyA glue used no clamping needed Add /6 balsa fillers nose Put fuselage back over top view Place book side fuselage rest straightedge fuselage should perfectly straight F- 1 tail Apply CyA glue tail joint Install cross braces apply A6-in cross-grain top sheeting white glue stopping beginning stab loca tion Install pushrod outer sleeves apply A6-in cross-grain bottom sheeting Finish top sheeting hatch balsa Note hatch front rear nose sheeting beveled hold front hatch place catch made strips hardwood bent pin Add /32 ply skid Round off corners minimize square box look sand fuselage smooth Tail section stabilizer built three pieces over plan tips attached later LE TE center section x 3A6 balsa Pick hard piece LE piece soft enough push needle through sewing elevator hinges TE rest stab made sq lightweight balsa LB TE tips trimmed rounded after gussets added dry prop up tips /2-in bottom Bevel mating edges glue position fin rudder elevator cut medium weight straight-grained 2 balsa Cut slot stabilizer fin glue fin position after checking squareness stab tail assembly attached fuse lage white glue Take time assure trueness angles Wing mounting Check wing fit saddle mark its center Drill hole wing LB dihedral joint accommodate A-in hole peg slide wing place does sit flush 34 Model Aviation Before covering complete structure weighs 55 oz covering adds about 15 oz Spars inboard wing panels spruce strength tip panels use balsa lightness Assembled stabilizer other major parts laid out prior assembly plywood motor mount stack ribs timeconsuming pieces cut out FULL-SIZE PLANS AVAILABLE . SEE PAGE 170 I/B HOLD DOWN DOWEL 1/4 55 BALSA EADlNG EDGE / _____ 3 I/SDPL lW-BPOLYHEDRAL WIW-IjW IjjWWIW-IAS/-I1IWBiIWARUIWIWIWIW-BRA /32 PLYD2I/IA C-GRAIN WINGPLANTO PVIEWDIHEDRAL I/4oS/SDBALSA RIBS BRACES ISPRUCE lID BALSA I/SD BALSA GUSSETS F SHEETING TO ISPARS V550 BOTTOM I/ASS I/3D PLY- IA IA SA D3GUSSETS WINGJ LEFTTIPRIGHT WINGTIP I/SoS/IA sHARD BALSA LE PIN SLOT BALSA WAW-3W2WI WIWO /W-3W-A I/IA C-GRAIN1/4 3/32 BALSA RIBSBALSA SPARSI/B BALSA3/3DI/B S/ID MEG BALSA TE GUSSETSBALSA SHEET 3/32 --L-oBALSA ENSCAPIX~ 3/A 5/B RAGSW-A2RESD3 DREG TRAILING EDGE STOCKI/A SO RUD INSTALL KILLSWITCHPI/IAoI/BBASARIBW-3DREG BAYTERYPERMANENTLY WIRED01REQ W-2DREG F MOTORSw -TRIM 232 ROB BOYTOB OP L E- GD REQ I/IA S/IA55 RIBS SlY FLAY ON BOORSW-IDO RED BATTERYPOSE GAHARD WOOD BENT PINALL BRACES I/3D PLY DETAILSMI/A BALSA S I/B HATCH 150 I/D HO WOODI/3DAL HATCH STOPBENT PINPLYSCREWS I/IA C-GRAIN BALSA PSSHBODS LS PLYsY-SIDESIDE OSTLI E VIEW DDNfZ5j SIA Ill~- ------ __ 1MOTHBAYYACEI 035F/SE 4TT IIFIN KEYES THRO STAB B/COO-1/16 BALSA CROSSI/BSO BALSA LONGERONS GRAIN TOP H BOTTOMAND CROSS BBACES HORT HORNS I/3D PLY SKIDMOTOR SW RS275-ISSS3/3D SHEET BALSA SIDES I/BoS/A 4IIELEO BALSA -CT IRCVRI U I/A l/D1/32 PLYHARDWOOD SKID fHARDWOOD FIREWALLI/R BALSA I/B PLY PD I/B BALSA P1 FUSELAGE TOP VIEW WATTS UP TOP AND BOTTOM SHEETING OMITTED FOR CLARITY R/C ELECTRIC POWERED GLIDER 0I2345A WING SPAN 52 WT 20 OZ AREA 365 SO I{ LOADING B OZ & DRAWN BY KEN MARRON IJiS R' TflF IJDMOBILU saddle elongate hole rat-tail file overdo filing snug fit desired Align wing perfectly drill two holes #4 self-tapping sheetmetal hold-down screws through rear hardwood hold-down block Covering Pick lightweight material model presented covered transparent yellow Solarfilm wing stab opaque orange fuselage tail Midnight blue used windows logo D&J striping finished off control horns cut down Carl Gold berg short horns attached CyA After sanding bottom removing covering material horn location flood area CyA harden wood Press horn place hold few moments its dry run bead CyA around sides make rivets mounting holes some CyA baking soda After covering rudder elevator attached using thread doubled over applied Figure 8 pattern shown use Solarfilm hinges described January 1983 MA page 49 Check balance point CG components temporarily place including pushrods CG correct position mount servos rails March 1984 35 1/16 BALSA VERTICAL GRAIN WEDS Above The complete fuselage sa,uu ru reaoy covering radio installation shouldnt weigh 25 oz Select wood carefully minimize weight Right Motor battery compartment must quite strong handle mass concentrated Balsa longerons 1/16 balsa doublers nose stiffen sides considerably motor actuated push-ON push-OFF switch Radio Shack #275-1555 full-down elevator applied Remove switch mounting nut discard Sand side switch will face fuse lage wall begin position Make sure turns off servo centered neutral Adjust switch trim transmitter until full-down elevator turns switch time tach CyA glue four sides wiring before installing radio Run antenna wire back through fuselage out through small hole made near rear Motor batteries GE AA cells used because high quality cost less two dollars GE C cells another good choice motor can also purchased complete batteries As shown motor-to-battery con nection made mini-alligator clips Radio Shack #270-378 rather servo-type plugs way plane can held hand unclipping removing power pack other hand pack used can wired permanently charging jack added ex ternally Miscellaneous comments Although made operate six cells motor works well four cells conditions calm plane usually flown way four cells weight goes down about 1 oz flatter glide results total powered altitude about same just takes longer get Since less current consumed run minute longer charged 12-volt source six cells should have resistor series two Radio Shack #271-311 I-ohm 10-watt resistors series work well Four cells should never charged 12 volts dropping resistor series Current never tapers off enough avoid damaging cells Instead connect two four-cell packs series 12-volt charging Dont overlook slow-charging 50 mA radio charging system equivalent Six cells charge well eight-cell transmitter output method has ad vantage allowing arrive fly ing field several pre-charged packs Dont overlook condition charging battery getting poor per formance system suspect weak charging battery first Finally no cooling exhaust slots used needed setup Since current draw low little heat generated dissipated Trimming flying new RC flying please seek out helpeven have travel far visit club one-time lesson several hours will greatly improve chances success Install 6-3 prop motor power pack Stuff foam padding around pack hook up yet As safety pre caution get habit range-checking electric-powered plane before installing Continued page 130 36 Model Aviation Fuselage alignment symmetry made ea sier using graph paper line drawn down center centerlines marked formers firewall Rubberbands model ing clamps help hold things tight gluing couple straightedges assure straight f use lage sides F-2 tail post Books hold sides place adding crosspieces brace further described text holds fuelage rear centerline aligning formers firewall paper clamp clothespins hold center Authors prototype wing under construction dihedral braces glue dries Shims trailing edge bottom spar pinned 1/32 ply provide correct spacing ribs place Ribs added LE and dihedral braces center sheeting RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA Electric flight challenge sport flier competitor alike Watts Up introduction should gratifying Happy landings Radio Technique/Myers Continued page 39 ing microscopic whiskers through sulating paper can blow out whis kers high-voltage charge really trust cells afterward dont So away workbench lot Chargemaster may prove fine tool Ace RC Inc Box 51 lE Higginsville MO 64037 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 [ writing advertisers mention t read about ModI Aviation J-3 has proven over years real crowd pleaserprobably because its good old J-3 fact touches ob servers plane built winter 1978-79 first flown March 3 latter year didnt know till later Bob Boucher Astro Flight design ing Porterfield same time two planes very similar date J-3 has accumulated 334 flights drop oil has soaked 150 depicted Fig 4 Prior 1980 keeping record flight time date number flights thats reason about half plotted Fig 4 obvious five-mm airplane can see vital statistics what details Heres some information about plane J-3 scratch-built using Sig plans guideline Since electricpowered knew plane itself lightweight rugged kit version glow engine would set about redrawing plans choosing construc tion techniques wood sizes consistent application also changed air foil 12/2% flat-bottom section Dihedral added lieu ailerons Result real charmer Admittedly 1-3 fair-weather flier does handle wind well defi nitely fun fly calm air typical flight starts small amount ground handling followed taxi takeoff Fol lowing climb-out back off proportional throttle cruise around Flybys snapbeautiful experience plane pussycat handling several times Ive nearly hypnotized myself flying myself Usually Ill some touch-and-goes two inside loops playing throttle control needed plane glides nicely note some longer lift-assisted flight times Fig 4 generally keep power whole flight varying amount de sired effect About third time have enough power left after landing taxi back pit area Otherwise power out have bring back dead-stick 1-3 good example inadequate battery cooling Im fourth battery heat reason time design construction what looked like good installation cooling has proved adequate Whatever knowledge may have Electrics has come cheaply 15-size motor used plane new version plane new so-called black back 15 current model Astro 15 rather different motor Ferrite 15 uses 12 cells 12 Ah may install someday get longer flights overall weight will increase about 9 oz estimate flight time should increase about 8-9 mm Look over vitals get general idea candidate designs around would perform comparably would require some modeling effort make suitable electric power J-3 example Astro Porterfield 132 Model Aviation Watts Up/MarronElectrics/Kopski Continued page 130 Continued paqe 44 jSSOATES INCNEW MO 13 N IS Dont bee stung AIDS CLOUD WAYHAYWARD CA 945S OS4ONCsalaENYA GUARANTEED CY NO 5310 Os l2O4cy NO 5317 HOT SHOT Hor~US PAT 4405890 Hand held rechargeable glow plug energizer size engine uses gtow plug Small enough carry yoijr shirt pocket Makes dry cell batteries power losing wires thing ot past Easy attachment cowd engines Reinforced extra hard use Can charged upto 1000 times Uses HEAD LOCK glow plug connector MODEL PRODUCTS CORP positive corinec tion tothe glow plug 90 day unconditional guarantee plus limited warranty up year Complete instructions charger Available dealer order direct Visa Mastercard accepted Add Si 50 postage power convenience $1995 Without charger $1595 b & r Hobbies PO Box 192 Oscoda MI 48750 [517] 7393549 Making Leisure Time Enjoyable
Edition: Model Aviation - 1984/03
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 130, 132
NO OCR TEXT tcnsr tin U IYCI 11SCULUIY uiUIiIu au.ty OIU IWIUbJtI SLrn*IP ity trars,.. s iuuiwuht showu. 11W IruGIur viny iiiely Adding same opaque covering fuselage wing usuu ~ion creates illusion wing two parts really wing one-piece structure Left A fully-charged 6-amp motorcycle battery adequate recharging motor power pack four five times Having just extra pack keeps down-time minimum author changing packs another flight Right easy access motor battery hatch removed Battery connected mini alligator clips easy one-hand attachment Fuse CyA-glued front battery partition Lert IJoT5 ne reiariunsnip uj inc muiur L wtw dllu riuc ciuvatol vu ncucvc WELL~ - c radio battery receiver wrapped ligntweugnt foam Right Using thin spruce spars webbing between produces strong light wing Three prototypes exist presented plans pictures has span 52 365 sq area 20-oz weight ready fly weight breakdown wing covered 35 oz fuselage tail covered 3 oz motor battery 75 oz radio 5 oz 100 mAb battery pack have much building experi ence should review article gluing techniques March 1983 MA before getting underway Wing construction Twenty ribs cut after making template A6 2 plywood can easily cut modeling knife template secured sheet light 76 C-grain balsa pins #11 X-Acto blade used cut around template Very uniform results achieved method Cover plan plastic film Begin building both main panels same time follows Pin straightedge plan along TE butt 5A-in TE pieces together centerline pin place Pin bottom 2 spruce spars plan after checking alignment notches ribs razor plane sanding block remove bottom LE edge facing building board approximately A2 will allow ribs sit flush plan Pin /4 sq LE place Use triangle assure vertical horizontal trueness glue ribs cyanoacrylate CyA except W-A B outermost W- ribs panel top spar installed later outer panels made same manner main section except spar /4 X 3A2 balsa glue W-l end caps just yet critical part building wing mak ing sure panels aligned properly joined dihedral An easy way achieve have two building boards such described February 1983 32 PAnr4l Aviation Elevator pushrod exits cleanly rear Carl Goldberg Models mini-horns used fuselage Radio antenna runs Nyrods Thread hinges operate freely fuselage length exits right sewn neatly give good appearance MNK tJLLJ UULJY- II NWIN s WHRIj WMN YULJrMM~JI j MALLV YLJLJN6Y TI4E AMA N RESTOI YOUFOR 5I BIKE RIDESIGATE TO FLYING -SAIL-SII- AS AMA-Z0 TOOFTI4AT INEVERBUILD -JOUSES -SCUBA -ALL OF THAT OF LEARN YOU WEREGREWA BEARD10 BOAT5- 1016BUTAMAKNO%VS WI4AT SEVENTYTflEY -DON TLOOKDTC4E5 FOR SALLMENASKEDMEICW~ATTVCEMEIIT COMEYOU DONT NT BLOCKS LOOK -B QLANES _____ 70 3/32 BALSA FIN-RUOCER AND ELEVATOR GOLDBERG SHORTHORN 1/16 SHEET TOP ANDBALSA FRAMING BY ELEVATOR SERwjBOTtOM CROSS GRAIN DONEL HOLD DOWNNO4 SCREWS 2 1/16 PLYWCXJO JOINT CLAMPDIHEDRAL./ 3/32 SHEET SIDING I/B SO FRAMED TIPS I/B LONGERONS1/8 BALSA SHEET WITH FIN SLOT 1/32 SHEET C/S TOPAND BOlTOM1/4 X V2 HOLD DOWN BLOCK FOR WING I/B SHEET HATCH ACE MICRO SERVOS1/16 SHEET WEBS 3A6X 5/16 TEDGE STOCK GUIDES 1/16 SHEET GUSSETS D3 I/32PLWOOD POLYHEDRAL BRACE NOSEV16 SHEET ALL RIBS MOTOR SCREWS2 I/32PLY SIID- NOSE TO Fl I/16BALSA FILLERSG E AA flLRIES 61I/4X 3/ 32 SPRUCE SPAR lOPAND BOTrOM ASTRO 035 ELECTRIC MOTOR3 MIN TILL KLU MA article Accurately hinge middle will always flat twist angle Prop up boards center panel spar bottoms 1 table sur face Bevel LE spars TE fit well joined angle Apply white glue edges join pan els pin place Glue top spar Cut front dihedral brace A2 ply install white glue Clamp clothespins setting up cut rear brace Note /16 narrower spar depth allow top bottom sheeting installing place spacer A2-in scrap under brace check see another A2-in scrap will come out flush top spar Trim needed glue clamp place Trim A2 top bottom ribs W-A B allow sheeting cut ribs two spar notches install using shims Glue W-A ribs other well wing parts Y32-in top sheeting V6-in verti cal grain shear webs installed next panels still pinned board prop up tips outer panels bottom spar li/s high Bevel ends glue place Next add V16-in corner gussets Y32 ply TE wing hold-down screws Sheet bottom center section /32 balsa Shape sand LE wing tips Add end caps finished wing should weigh about 25 oz Fuselage Cut two sides light weight straight-grained Y32 balsa similar density will curve evenly Clamp halves together clothespins using cardboard scraps proctect balsa denting sand identical shape triangle mark thie positions formers Fl F2 inside walls Cut Fl F2 A-in stiff balsa mark vertical centers Cut hard wood wing hold-down blocks bevel LE block per plan brace can fashioned scrap /6 balsa hold tail lining things up base made about 3-in sq notched vertical post 4 5 high 1 wide Put three rubberbands loosely around fuselage halves clip tail tem porary support clothespin Line up fuselage over top view plan pin support board Spread sides slide formers place Testfit hardwood pieces forward holddown should flush top rear should A6 top formers lined up over planvertical parallel other triangle shows fuselage sides square building board CyA-glue formers place Glue hardwood blocks white glue Cut out firewall Its much easier drill holes before cutting large sheet plywood Drill center 7A6-in-dia hole /s-in-dia motor mounting holes check motor fits properly air inlet holes formed drilling two A-in-dia holes side-by-side connecting enlarging rat-tail file Draw vertical line center firewall Pull sides nose padded C-clamp Apply white glue firewall edges install tween sides tighten clamp Make sure centerline matches plan firewall has no sidethrust about 20 downthrust Let dry thoroughly Remove board install longerons throughout CyA glue used no clamping needed Add /6 balsa fillers nose Put fuselage back over top view Place book side fuselage rest straightedge fuselage should perfectly straight F- 1 tail Apply CyA glue tail joint Install cross braces apply A6-in cross-grain top sheeting white glue stopping beginning stab loca tion Install pushrod outer sleeves apply A6-in cross-grain bottom sheeting Finish top sheeting hatch balsa Note hatch front rear nose sheeting beveled hold front hatch place catch made strips hardwood bent pin Add /32 ply skid Round off corners minimize square box look sand fuselage smooth Tail section stabilizer built three pieces over plan tips attached later LE TE center section x 3A6 balsa Pick hard piece LE piece soft enough push needle through sewing elevator hinges TE rest stab made sq lightweight balsa LB TE tips trimmed rounded after gussets added dry prop up tips /2-in bottom Bevel mating edges glue position fin rudder elevator cut medium weight straight-grained 2 balsa Cut slot stabilizer fin glue fin position after checking squareness stab tail assembly attached fuse lage white glue Take time assure trueness angles Wing mounting Check wing fit saddle mark its center Drill hole wing LB dihedral joint accommodate A-in hole peg slide wing place does sit flush 34 Model Aviation Before covering complete structure weighs 55 oz covering adds about 15 oz Spars inboard wing panels spruce strength tip panels use balsa lightness Assembled stabilizer other major parts laid out prior assembly plywood motor mount stack ribs timeconsuming pieces cut out FULL-SIZE PLANS AVAILABLE . SEE PAGE 170 I/B HOLD DOWN DOWEL 1/4 55 BALSA EADlNG EDGE / _____ 3 I/SDPL lW-BPOLYHEDRAL WIW-IjW IjjWWIW-IAS/-I1IWBiIWARUIWIWIWIW-BRA /32 PLYD2I/IA C-GRAIN WINGPLANTO PVIEWDIHEDRAL I/4oS/SDBALSA RIBS BRACES ISPRUCE lID BALSA I/SD BALSA GUSSETS F SHEETING TO ISPARS V550 BOTTOM I/ASS I/3D PLY- IA IA SA D3GUSSETS WINGJ LEFTTIPRIGHT WINGTIP I/SoS/IA sHARD BALSA LE PIN SLOT BALSA WAW-3W2WI WIWO /W-3W-A I/IA C-GRAIN1/4 3/32 BALSA RIBSBALSA SPARSI/B BALSA3/3DI/B S/ID MEG BALSA TE GUSSETSBALSA SHEET 3/32 --L-oBALSA ENSCAPIX~ 3/A 5/B RAGSW-A2RESD3 DREG TRAILING EDGE STOCKI/A SO RUD INSTALL KILLSWITCHPI/IAoI/BBASARIBW-3DREG BAYTERYPERMANENTLY WIRED01REQ W-2DREG F MOTORSw -TRIM 232 ROB BOYTOB OP L E- GD REQ I/IA S/IA55 RIBS SlY FLAY ON BOORSW-IDO RED BATTERYPOSE GAHARD WOOD BENT PINALL BRACES I/3D PLY DETAILSMI/A BALSA S I/B HATCH 150 I/D HO WOODI/3DAL HATCH STOPBENT PINPLYSCREWS I/IA C-GRAIN BALSA PSSHBODS LS PLYsY-SIDESIDE OSTLI E VIEW DDNfZ5j SIA Ill~- ------ __ 1MOTHBAYYACEI 035F/SE 4TT IIFIN KEYES THRO STAB B/COO-1/16 BALSA CROSSI/BSO BALSA LONGERONS GRAIN TOP H BOTTOMAND CROSS BBACES HORT HORNS I/3D PLY SKIDMOTOR SW RS275-ISSS3/3D SHEET BALSA SIDES I/BoS/A 4IIELEO BALSA -CT IRCVRI U I/A l/D1/32 PLYHARDWOOD SKID fHARDWOOD FIREWALLI/R BALSA I/B PLY PD I/B BALSA P1 FUSELAGE TOP VIEW WATTS UP TOP AND BOTTOM SHEETING OMITTED FOR CLARITY R/C ELECTRIC POWERED GLIDER 0I2345A WING SPAN 52 WT 20 OZ AREA 365 SO I{ LOADING B OZ & DRAWN BY KEN MARRON IJiS R' TflF IJDMOBILU saddle elongate hole rat-tail file overdo filing snug fit desired Align wing perfectly drill two holes #4 self-tapping sheetmetal hold-down screws through rear hardwood hold-down block Covering Pick lightweight material model presented covered transparent yellow Solarfilm wing stab opaque orange fuselage tail Midnight blue used windows logo D&J striping finished off control horns cut down Carl Gold berg short horns attached CyA After sanding bottom removing covering material horn location flood area CyA harden wood Press horn place hold few moments its dry run bead CyA around sides make rivets mounting holes some CyA baking soda After covering rudder elevator attached using thread doubled over applied Figure 8 pattern shown use Solarfilm hinges described January 1983 MA page 49 Check balance point CG components temporarily place including pushrods CG correct position mount servos rails March 1984 35 1/16 BALSA VERTICAL GRAIN WEDS Above The complete fuselage sa,uu ru reaoy covering radio installation shouldnt weigh 25 oz Select wood carefully minimize weight Right Motor battery compartment must quite strong handle mass concentrated Balsa longerons 1/16 balsa doublers nose stiffen sides considerably motor actuated push-ON push-OFF switch Radio Shack #275-1555 full-down elevator applied Remove switch mounting nut discard Sand side switch will face fuse lage wall begin position Make sure turns off servo centered neutral Adjust switch trim transmitter until full-down elevator turns switch time tach CyA glue four sides wiring before installing radio Run antenna wire back through fuselage out through small hole made near rear Motor batteries GE AA cells used because high quality cost less two dollars GE C cells another good choice motor can also purchased complete batteries As shown motor-to-battery con nection made mini-alligator clips Radio Shack #270-378 rather servo-type plugs way plane can held hand unclipping removing power pack other hand pack used can wired permanently charging jack added ex ternally Miscellaneous comments Although made operate six cells motor works well four cells conditions calm plane usually flown way four cells weight goes down about 1 oz flatter glide results total powered altitude about same just takes longer get Since less current consumed run minute longer charged 12-volt source six cells should have resistor series two Radio Shack #271-311 I-ohm 10-watt resistors series work well Four cells should never charged 12 volts dropping resistor series Current never tapers off enough avoid damaging cells Instead connect two four-cell packs series 12-volt charging Dont overlook slow-charging 50 mA radio charging system equivalent Six cells charge well eight-cell transmitter output method has ad vantage allowing arrive fly ing field several pre-charged packs Dont overlook condition charging battery getting poor per formance system suspect weak charging battery first Finally no cooling exhaust slots used needed setup Since current draw low little heat generated dissipated Trimming flying new RC flying please seek out helpeven have travel far visit club one-time lesson several hours will greatly improve chances success Install 6-3 prop motor power pack Stuff foam padding around pack hook up yet As safety pre caution get habit range-checking electric-powered plane before installing Continued page 130 36 Model Aviation Fuselage alignment symmetry made ea sier using graph paper line drawn down center centerlines marked formers firewall Rubberbands model ing clamps help hold things tight gluing couple straightedges assure straight f use lage sides F-2 tail post Books hold sides place adding crosspieces brace further described text holds fuelage rear centerline aligning formers firewall paper clamp clothespins hold center Authors prototype wing under construction dihedral braces glue dries Shims trailing edge bottom spar pinned 1/32 ply provide correct spacing ribs place Ribs added LE and dihedral braces center sheeting RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA Electric flight challenge sport flier competitor alike Watts Up introduction should gratifying Happy landings Radio Technique/Myers Continued page 39 ing microscopic whiskers through sulating paper can blow out whis kers high-voltage charge really trust cells afterward dont So away workbench lot Chargemaster may prove fine tool Ace RC Inc Box 51 lE Higginsville MO 64037 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 [ writing advertisers mention t read about ModI Aviation J-3 has proven over years real crowd pleaserprobably because its good old J-3 fact touches ob servers plane built winter 1978-79 first flown March 3 latter year didnt know till later Bob Boucher Astro Flight design ing Porterfield same time two planes very similar date J-3 has accumulated 334 flights drop oil has soaked 150 depicted Fig 4 Prior 1980 keeping record flight time date number flights thats reason about half plotted Fig 4 obvious five-mm airplane can see vital statistics what details Heres some information about plane J-3 scratch-built using Sig plans guideline Since electricpowered knew plane itself lightweight rugged kit version glow engine would set about redrawing plans choosing construc tion techniques wood sizes consistent application also changed air foil 12/2% flat-bottom section Dihedral added lieu ailerons Result real charmer Admittedly 1-3 fair-weather flier does handle wind well defi nitely fun fly calm air typical flight starts small amount ground handling followed taxi takeoff Fol lowing climb-out back off proportional throttle cruise around Flybys snapbeautiful experience plane pussycat handling several times Ive nearly hypnotized myself flying myself Usually Ill some touch-and-goes two inside loops playing throttle control needed plane glides nicely note some longer lift-assisted flight times Fig 4 generally keep power whole flight varying amount de sired effect About third time have enough power left after landing taxi back pit area Otherwise power out have bring back dead-stick 1-3 good example inadequate battery cooling Im fourth battery heat reason time design construction what looked like good installation cooling has proved adequate Whatever knowledge may have Electrics has come cheaply 15-size motor used plane new version plane new so-called black back 15 current model Astro 15 rather different motor Ferrite 15 uses 12 cells 12 Ah may install someday get longer flights overall weight will increase about 9 oz estimate flight time should increase about 8-9 mm Look over vitals get general idea candidate designs around would perform comparably would require some modeling effort make suitable electric power J-3 example Astro Porterfield 132 Model Aviation Watts Up/MarronElectrics/Kopski Continued page 130 Continued paqe 44 jSSOATES INCNEW MO 13 N IS Dont bee stung AIDS CLOUD WAYHAYWARD CA 945S OS4ONCsalaENYA GUARANTEED CY NO 5310 Os l2O4cy NO 5317 HOT SHOT Hor~US PAT 4405890 Hand held rechargeable glow plug energizer size engine uses gtow plug Small enough carry yoijr shirt pocket Makes dry cell batteries power losing wires thing ot past Easy attachment cowd engines Reinforced extra hard use Can charged upto 1000 times Uses HEAD LOCK glow plug connector MODEL PRODUCTS CORP positive corinec tion tothe glow plug 90 day unconditional guarantee plus limited warranty up year Complete instructions charger Available dealer order direct Visa Mastercard accepted Add Si 50 postage power convenience $1995 Without charger $1595 b & r Hobbies PO Box 192 Oscoda MI 48750 [517] 7393549 Making Leisure Time Enjoyable