For four channels 15 engine responsive sport machine fully aerobaticat cost wont blow away allowance U 1 F Randolph ONE OF MY flying buddies claims airplanes flit rather fly true have known fly large fuel-guzzling 40s occa sions like small quick airplanes Misfit same flying buddy also thinks should build stand-off scale models lots guns bombs make lots smoke noise does airplane does look like model air plane no interest Misfit looks like model airplane Misfit quick forgiving airplane addition wing tip plates something goes back free-flight days fore WW II built wash-in both tips make airplane must made snap ailerons remain active well stall sum up Misfit groovy rolling spinning snapping looping knife-edging fun-fly winner will go point what ask ask too much forgive Misfit cheap date too gallon low-nitro fuel will fly 10 hours 40 minutes full bore half throttle will produce well over 15 hours fun same price quick inexpensive build big enough seen reasonable distance yet small enough go flying field piece Kit Make template wing rib old file folder other thin stiff paper use ball-point pen make 18 Model Aviation Ready flight 1 5-powered Misfit conveys feeling competent deaign reenforced study Neil Uptaks sharply drawn plan Tip plates simulated cabin enhance its looks printed sheet two pieces medium hard 1/16 X 3 X 36 balsa Move tem plate around find ribs can cut sheet need 24 After ribs have cut out gang sanded same shape size tem plate take four center stack cut 1/16 top bottom center ribs will receive sheeting mark R2 trailing edge sheeting cut piece 1/16 X 3 X 36 hard balsa Because four inch wide fourth must made splicing three have stripped cut length 221/16 remaining one-inch-wide strips spliced form fourth wing spars stripped sheet 3/16 X 3 X 36 medium hard balsa Cut eight strips 3/16 sq four strips 3/16 3/8 extra 3/16 sq stabilizer rudder spar webbing 1-15/16 1 1/16 16 vertical grain balsa four plywood dihedral braces cut 1/s ply wood landing gear mount stabilizer spar doublers 3/16 strips cut 1/32 plywood used wing tip plates Cut fuselage sides two pieces medium soft 3/32 X 4 X 36 balsa shape shown plan side view lines straight use straight edge Pin two sides together gang sand same outline 1/32 ply doublers cut fit finished sides left right cabin doublers cut 1 / 16 sheet balsa longerons uprights /t sq soft balsa Cut cabin formers /s plywood center cut-outs December1978 19 designer flies aircraft camera typical pass nandy likes planes flit nervous stick tweakers should happy its responsiveness Gallon fuel gives 15 hours Assembled fuselage sides before joining togethernote longe rona notched fit over doublers Its textbook structure aileron servo well formed after wing panels have joined together top center section sheeting completed messy slotting pinning epoxy annoy simple MonoOte hinged rudder takes little time neat Hinges before covering Aileron torque rods installed what has become almost standard arrangement Note aileron grooved receive rod 0 S / 1/8 PLYWOOD DIHEDRAL BRACES 1/4 SPRUCE DRILLED FOR AILERON LINKAGE ADJUSTABLE STEER 1/16 BALSA DECK FORMER BELLCRANK N 1 3/4 SPINNER 15 MAX ENGINE ON TATONE MOUNT 1/2 WHEELS 3 ALIKE-~ 20 Model Aviation SERA TRAY 3/32 BALSA SIDE I/32PLYMOD WALL DOUBLER TO F2 FI TWO PART FIREWALL FROM 1/8 PLYWOOD MIDWEST L G STRAPS SCREW UNDER 1/8 PLY PLATRWI 1 3/16 MUSIC WIRE 1/16 PLYWOOD WEBS 4 BAYS 1/4 DOWEL WING HOLD DOWNS 3/16 SQ BALSA ENTIRE FiN ASSEMBLY 3/16 SQ BALSA ALL STABILIZER FRAMES 1/16 BALSA TOP AND BOTIOM PLANKS NYROD TO RUDDER CONTROL HORN NYROD 10 ELEVAlOR II LI \4fl4 3/16 S4EET BALSA RUDDER TAPE HINGES MIDWEST WNTROL HORNS 3/16 BALSA ELEVATOR II 3i6 BALSA BLOCK 1/32 PLIWOOD REINF 3/32 BALSA SIDE PLANKS ________________________ I/8SQ HARD BALSA ALL FUSELAGE LONGERONS AND BRACES 1/16 TR EDGE PLANKS -TOP AND BOTTOM 3/32 BALSA SPAR WEBBING 12 BAY 1/8 SQ TR EDGE FILLER \l 3/16 BALSA AILERONS 1/16 BALSA DOUBLER AT lop AND BOTUOM BALSA RIBS I/4SQ BALSA LEADING EDGE 3/16 X 3/8 HARD BALSA TOP AND BOTTOM SPARS 3/16SQ HARD BALSA LEADIIG EDGE SliFFENERS 1/32 PLYWOOD liP PLATES December 1978 21 K / 9 ers can used make firewall Cut shape glue together epoxy form firewall Drill firewall engine mounts fuel lines throttle linkage addition 1 / 16 sheet balsa wing center section fuselage top bottom completes kit Fuselage Epoxy 1/32 plywood doublers forward part fuselage sides making sure left right sides plywood doublers side cabin doublers notched fit over ply doubler glued place Longerons notched fit over cabin doublers glued uprights stabi lizer supports added last dry again pin two sides together sand edges true square Place side over side view plans mark location cabin formers side still flat plan glue cabin formers loca tions using square right triangle keep square fuselage side certain formers belong front front etc glue has set glue other side top formers using square make sure edges both sides square other front back top bottom dry place bottom fuselage flat work surface over top view plan Bring nose sides firewall epoxy place hold ing clamps string rubber bands whatever works Bring tail together beveling fit glueing being sure stabilizer cut-outs parallel work surface Locate position landing gear mount notch bottom fuselage sides 1/16 sheeting added landing gear mount wont stick up above Glue mount sheet bottom 1 / 16 balsa cross grain Cut exit holes outer nyrod install rods using epoxy exit fuselage side add bulkheads aft fuselage shown hold place Epoxy brass tube fuel over flow lines through firewall T nuts engine mount back Install fuel tank using foam bottom sides wedge tank position 3/16 balsa bulkhead hind Attach fuel overflow lines Use inner nyrod bring throttle through firewall cabin epoxy firewall Sheet fuse lage 1/16 firewall LI P%X OONON&L SOOO CO OMOMOOr 80*00 Crooo- 22 Model Aviation servo place aileron linkage hooked upall ready fly nree nooysnop strap iittings noia main gear plywood floor L7iTVXtvmi1HOOTS 0 0800 OOON00N0N j0T Strip ailerons one-piece elevator minimize fussing Red yellow color scheme eye-catching forward cabin former Cut hole sheeting inner nyrod nose gear steering shown Use epoxy microballoons install nyrod making sure extends well cabin Com plete top sheeting install cabin gussets fuselage ready finalto pin bottom trailing edge sandingsheeting place Glue piece /s sq back edge sheeting Using rib Wing Cover plans backingas gauge pin bottom main spar MonoKote film clean-plans center both wing panels ers bag keep structure stickingContinued page 99 I- Y ir' rT 1 L11 IL1[L t YflLSO.AJSNn ONN KJ 0454 4 * u moo. 00400kSO&NA 40 WOM 0601040 7*00oo.oOrt LmJ LrL_1 ____----5 STRAP~0046400 S&TION N-N December1978 23 Servo installation showing nosewheel throttle pushrods brought Randy seems have custom-tinkered servo arms Kratt 4-Ounce tank wedged piece foamneat installation II/ HI 1 / 0 N w 4 0 w w 0 w -J 4 -J 4 z 4 -J w N -J -J U Ace RIC proud announce new member family servos popular Digital Commander line radio equipment kits Bantam Midget brother Bantam servo has respected name servos years Bantam Midget considerably smaller lighter boasts same torque gear strength its big brother bit speed Notice extremely low profile--important interfacing elevator rudder servos aileron servo linkages Reread above paragraph consider fact Midget offers servo micro-miniature category also has power strength 60 powered pattern ships Truly universal servo Signetics 544 IC external driver transistors quality plastic conductive element pot other components make combination has become synonymous Ace R/C Digital Commander servos Servos have Competition Grade performance economical price tag Bantam Midget will work modern positive pulse system negative pulse systems ProLine etc pulse inverter 14G18--$2 required servo rotary wheel extended arm adjustable arm furnished No connectors furnished servo kits flite packs complete systems available Midget option please write details Bwnt4 /Wc44t Size Height--1125 Length--143 Width--O7 Weight 85 oz 24 grams Thrust 20 oz Transit Time Under 5 sec 900 BREAKTHROUGH IN SERVOS 14G20R--Bantam Midget Kit $2395 14G2ORC--Bantam Midget Assembled $2895 AG Please send yeur complete talog Enclased Si 00 refunded myNAME first order Add 550 far 1st clans mailADDRESS return add $100 handling oa ether dencur idea glide angle also re sponse rate elevator will valu able event have un expected engine flame-out Dead-stick landings easy wing full holes essentially case formation plane thing four-ounce tank well ahead CG Blue Birds get bit tailheavy fly tank dry No problem ready trim change avoid usually flying about two ounces worth Youll probably cuss times try figure out some less obvious construction features go ahead Persevere Youll hit show Blue Birds RC Technique/Myers continued page 17 engine Discussed above 4 Plan landing before take off obvious have wonder landings maneuver nearly everyone does poorly can see jaw muscles tighten eyes go squinty engine stops unexpectedly flight Now get out seems first thought heads Sure aware air plane accidents happen vicinity runway thats no reason panic glider easier land powered STATE zrROX 511E HIGGINSVILLE MO plane another aphorisms gives student confidence can land safely Concentrate keeping wings level simple instruction foremost mind students make good landings being aware fact plane has stopped moving Spot landings another matter like learning shoot gun first thing get shots part target Once happens its quite easy move group over Bullseye CORRECTIONS September issue Wing Sax trans portation bags GBS Enterprises re ferred Wind Sox regret error October issue page 60 center photo Keith Clodfelter erroneously identified James Duckworth November issue Wildcat RC scale model described article subhead requiring Pee Wee 02 although text plan cutaway drawing said TD TD theres world difference November issue Nats RC Pattern re port references Tony Bonetti tended mean flying skill better ever apologies Tony anyone else may have felt something else meant Tony has enviable track record Pattern competitOns Thats enough month Keep letters coming George Myers 70 Froehlich Farm Rd Hicksville NY 11801 M isfi it/Randolph continued page 23 ribs R2 located pin piece scrap 1/16 sheet between trailing edge main spar hold rib R2 up plans 1/16 bot tom sheeting added later will flush Glue first regular rib near center wing place over plan glue plywood webs spar its outboard side webbing makes excellent spacer assures ribs perpendicular spar well Continue adding ribs webs out tip no web between last few tip ribs After ribs place glue top main spar sure good contact webs well ribs Glue plywood web inboard first regular rib installed near center sec tion slide first R2 glue place Glue top front spar place bevel /8 sq trailing edge re ceive top trailing sheet glue place other half wing assem bled same sequence both wing halves have sembled bevel spars leading trailing edges will joined December1978 99 WORLD S LARGEST MASTER MODE S ASS T GIANTS OF ABOUT 5 10 FT SPANS Catalog Sssbsuriplion $8 Art mo IIi0 Order Pan no - numbers osk since ouese beconse n volunteer deriorsernire orgonisutioc orirhour denier supporr seC,rr98 Loek Hudson Bomb $4974Doolinln Gee Beo$4577 Flying Font 0-170$30 58Suyerrrorne 5dB$29102 Flying Forr 8-170$49 62Nousord Ike Boon$2365 M Monsuder 8-26$39 7$RTs Weddeli-Wos$39y 600 6 Comet Onuen$18y 74 yeseo Speulni$35 589970 62 HomMrMulljgunS32 60asu $1 Mosqoiro iSqrr 6321 $36 1$$ 70Onyic Gee-Bee$3965 BW Brd-0ye$29 55Heoth Boby Boiler$23$1 58Morebi M-5 Sen Fm$147$ 62 Corns 90mb P6E $39 107 Morrin MB-i Borrrb 60 Curl 7lrnike A-$$22 M Coudror 0-Ill Ob 015 60$ouglos 0-30 Ok $1561 AEG 019 Booker51$ 71Morrin 8-10 Bomb $205$ Snierson 2A2$15 43Skyrouker XF5F $1682 SleosnOub $19$30 57Curt Gb SG3C-1 $1516 Goriro 019 Booker$49 1100 PLANS AVAILABLE form dihedral angle done sanding block bench radial arm saw After beveling join two halves gether two main braces either side main spars trailing edge brace between top bottom trailing edge sheets Place wing half flat bench raise other wing tip until dihedral braces flush top bottom bath main spars center joint good fit trail mg edge Support wing angle glue dihedral braces Ali phatic resin glue recommended joint Clothes pins useful hold braces alignment glue dries Cut front two R2 ribs t main spar notch glue together center dihedral joint between main spar lead ing edge Add 3/16 balsa gussets side aft part R2s cut /$ aft main spar notch glued either side dihedral joint shown form cutout aileron servo piece scrap 1/16 balsa sheet between forms box Another piece scrap box trailing edge center completes structure sheeting Notice center sheeting between spars sheet bottom wing between R2s form box aileron servo Add 3/16 balsa gussets tip ribs wing ready finish sanding ailerons cut 3/16 balsa sheet sanded shape sanding block cut 1 tip bevel leading edges cut-offs glue wing tip trailing edges raised 1/16 gives washout wing tips Epoxy aileron hardware trailing edge shown original 1/16 ID brass tubing 1/16 wire bent form torque rod horn sure relieve trailing edge its back-up block allow movement aileron horns exit tubing Notch groove ailerons receive torque rods Install just prior covering Stabilizer Fin Rudder tail group built over plans thing re member add spar doublers before solid center section diagonal braces building stabilizer rudder elevator cut 3/16 sheet balsa pinned respective fixed surface final sanding usually apply good shot Hot Stuff location horns movable surface toughen up wood Completion parts sanded well 150 grit sandpaper Round edges fuselage except wing mount leading edges wing stabilizer fin rounded off well trailing edges elevator rudder piece l covered sandpaper excellent tool smooth inside gussets cabin wing tips think finished sand everything again 220 grit sandpaper Balance wing Use piece c wire fulcrum center wing use heaviest aileron side lightest wing panel still doesnt balance add weight light tip main spar can drilled tip accept whatever weight necessary plane should covered plas tic film like MonoKote use form hinges well Start rud der fin Iron 3/8-wide strip over trailing edge fin another strip same size over leading edge rudder strip should lap about / either side edges hinges made ironing 1/16 glue sides two pieces 1 MonoKote together form piece 1 15/16 glue side up half glue side down other half Two make hinge two hinges rudder four ele vator five ailerons hinge rudder fin iron hinge half top bottom side rudder turn over iron other two halves just inboard first ones joint hinge halves should fall right center rudder leading edge Bring rudder fin together crisscross hinges side rudder opposite side fin hold fin rudder position iron hinges fin both sides makes close strong hinge Cover fin rudder normal way hinge line fore aft procedure followed elevator well ailerons ailerons hinged torque rod epoxied aileron same time joined wing hinges will hold alignment until epoxy sets Epoxy tip plates wing after have covered Cut away covering tip plates contact wing tip After fuselage covered glue l wing holddowns Using polyurethane paint match trim paint firewall over lapping MonoKote little seal edges joints Black MonoKote stripped 1/16 wide makes good pin stripes between colors used trim Install engine mount 4-40 X bolts drilled accept engine hole drilled down through back part mount nose gear shown Bend main gear 3/32 music wire shape shown plans install plywood landing gear mount bottom fuselage metal landing gear mounting strips small wood screws screws cut off point does stick through plywood cabin Use epoxy holes fore screwing last time Bend nose gear music wire Instail wheel collar just above coil bear bottom engine mount Solder collar gear Another wheel collar top secures gear Mount steering arm above top collar engage piece 040 music wirefrom rudder servo through inner nyrod top left side fuselage mount servos plywood trays small wood screws trays Hot Stuffed fuselage sides proper place bring CG alignment Install aileron servo wood screws small plywood pads Hot-Stuffed top 3/16 balsa risers front back servo cut-out bottom wing servo should fit far down cut-out possible Hook up ailerons ele vator rudder install engine prop lets go Hying Range check before test flying radio installation different take few extra minutes check make sure ai lerons hooked up correctly CG should just under main spar should no noticeable warps wing tail Set control surfaces neutral ailerons flat bottom wing trim levers middle range Start engine set idle check control movements high low throttle taxi around runway min ute two get feel rudder throttle head wind go Misfit requires guidance Wherever leave will remain air plane called neutral stability As ability will complete slow roll straight up before running out steam loops can big round pattern style little button hooks Inverted flight easy little forward push elevator trim lever knife-edge flight dont use full aileron rudder wont hold Instead use full rudder fly ailerons Snaps spins require full elevator full rudder full aileron aileron can relaxed after spin initiated recovery rapid neu tralized controls Landings gentle since ailerons solid well stall wing tips have no tendency fall off fact Misfit can flown full up 100 Model Aviation elevator just enough throttle remain airborne still answer ailerons good 20 will enhance vertical per formance other worth trouble See later Im going flitting RC Scale Wischers continued page 25 didnt crash takeoff surest way us convince other modelers try hands scale prevent ac cidents being well practiced other planes before attempting flights scale models often heard excuse scale planes hard fly easily damaged crashed no longer valid Scale Wheels avid scale buffs have making own tires complete side-wall lettering number years first saw Toledo DeHavilland Hornet built Dario Bris ighella displayed machined mold ing dies used form tires silicone rubber Woodvale World Champion ships first-place winning Fournier Mick Reeves also hand-made tire its single landing wheel complete legible lettering side walls Mick used silicone rubber rather thick section support weight lettering scale size quite small therefore difficult engrave mold ing die example exten sive effort required world class model effect rule states FAI contest entrant must make declaration items used plane made builder planes wheels tires appear list parts quite often parts purchased FAI Precision Scale possible detail made builder Robart now producing Universal Scale Wheels lettering side walls Hubs molded high strength Lexan Tires low rebound thermoplas tic rubber Continental Deutsches Fabrikat 690 side wingfoot insignia Goodyear Weather 32 X 8 Airplane other side using wheels have found necessary maximum realism remove gloss tire material happens naturally age user may wish hasten process buffing fine sandpaper rubbing very gently cloth moistened dope thinner Robart now furnishes instructions three alternative methods inflating tires withstand load heavier scale models include use dry ice Alka Seltzer pressurizing agents Also described old method refrigerat ing wheel cause contraction air sealing screws loosened screws rapidly tightened trapped air expands room temperature pressurize tire hub discs furnished Robart can modified closely resemble pro totype wheels reworking center disc can removed drill ing filing leave rim new disc plywood styrene plastic epoxied back give depth hub disc Small bits tubing hex screw heads epoxied place ideal use new Hobbypoxy Thixotropic Epoxy Glue stays put applied does run discs painted dull aluminum Floquil resemble wheel castings prototype appearance improvement worthwhile Sport Scale plane detail can seen distance problem have Robart tires flat spot occurs tires model stands position prolonged period solved mak ing balsa stand support plane axles remove load tires flat spot difficult remove model will bounce unrealistically taxiing flats persist Pressurizing helps round out flattened tire Another method suggested Mike Gretz stuff Robart tires firm poly foam preference frequent inflation have also used two sets wheels dis play other flying display tires stuffed balsa discs cut seg ments easy assembly would suitable flying very hard would absorb no landing shock Flap Effectiveness use flaps pro totype airplanes has become common almost model modern plane will likely use seems no agreement between modelers ef fect takeoff landing expe rience no surprise between similar planes effect flaps hard predict until plane flown plane complete disappointment seem have no effect whatever another plane definitely slowed flaps applied Very likely good explanation variation lack aerodynamic knowledge ob scures reason increase lift drag flaps lowered model flying near cruising speed crease lift will cause momentary climb ballooning same time ad ditional drag will slow plane cause steepening glide angle steeper angle modeler attempting spot landing advantage makes point touch-down predictable some planes additional effect increase stability flaps lowered plane seems find groove undisturbed wind conditions Having slowed drag controls become less effective small stick movements have less effect glide path Most advantages flaps fullscale planes small consequence model especially true flaps used takeoff no good reason increase drag models require increase lift except four-engine 120-pound monsters marginal power have seen recently addition flaps actu ating mechanism servo adds large amount weight model could very well nullify benefits derived use trim change flaps lowered could source problems time least appreciated especially true contest judges ask December 1978 101 AM Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST R/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-RAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Mode4 Co Inc US ftte 1& North St Topsfjeld Mass 01983 887-8541 Support AMA Price $3995 kit per dollar bar em all
Edition: Model Aviation - 1978/12
Page Numbers: 18, 19, 20, 21, 22, 23, 99, 100, 101
For four channels 15 engine responsive sport machine fully aerobaticat cost wont blow away allowance U 1 F Randolph ONE OF MY flying buddies claims airplanes flit rather fly true have known fly large fuel-guzzling 40s occa sions like small quick airplanes Misfit same flying buddy also thinks should build stand-off scale models lots guns bombs make lots smoke noise does airplane does look like model air plane no interest Misfit looks like model airplane Misfit quick forgiving airplane addition wing tip plates something goes back free-flight days fore WW II built wash-in both tips make airplane must made snap ailerons remain active well stall sum up Misfit groovy rolling spinning snapping looping knife-edging fun-fly winner will go point what ask ask too much forgive Misfit cheap date too gallon low-nitro fuel will fly 10 hours 40 minutes full bore half throttle will produce well over 15 hours fun same price quick inexpensive build big enough seen reasonable distance yet small enough go flying field piece Kit Make template wing rib old file folder other thin stiff paper use ball-point pen make 18 Model Aviation Ready flight 1 5-powered Misfit conveys feeling competent deaign reenforced study Neil Uptaks sharply drawn plan Tip plates simulated cabin enhance its looks printed sheet two pieces medium hard 1/16 X 3 X 36 balsa Move tem plate around find ribs can cut sheet need 24 After ribs have cut out gang sanded same shape size tem plate take four center stack cut 1/16 top bottom center ribs will receive sheeting mark R2 trailing edge sheeting cut piece 1/16 X 3 X 36 hard balsa Because four inch wide fourth must made splicing three have stripped cut length 221/16 remaining one-inch-wide strips spliced form fourth wing spars stripped sheet 3/16 X 3 X 36 medium hard balsa Cut eight strips 3/16 sq four strips 3/16 3/8 extra 3/16 sq stabilizer rudder spar webbing 1-15/16 1 1/16 16 vertical grain balsa four plywood dihedral braces cut 1/s ply wood landing gear mount stabilizer spar doublers 3/16 strips cut 1/32 plywood used wing tip plates Cut fuselage sides two pieces medium soft 3/32 X 4 X 36 balsa shape shown plan side view lines straight use straight edge Pin two sides together gang sand same outline 1/32 ply doublers cut fit finished sides left right cabin doublers cut 1 / 16 sheet balsa longerons uprights /t sq soft balsa Cut cabin formers /s plywood center cut-outs December1978 19 designer flies aircraft camera typical pass nandy likes planes flit nervous stick tweakers should happy its responsiveness Gallon fuel gives 15 hours Assembled fuselage sides before joining togethernote longe rona notched fit over doublers Its textbook structure aileron servo well formed after wing panels have joined together top center section sheeting completed messy slotting pinning epoxy annoy simple MonoOte hinged rudder takes little time neat Hinges before covering Aileron torque rods installed what has become almost standard arrangement Note aileron grooved receive rod 0 S / 1/8 PLYWOOD DIHEDRAL BRACES 1/4 SPRUCE DRILLED FOR AILERON LINKAGE ADJUSTABLE STEER 1/16 BALSA DECK FORMER BELLCRANK N 1 3/4 SPINNER 15 MAX ENGINE ON TATONE MOUNT 1/2 WHEELS 3 ALIKE-~ 20 Model Aviation SERA TRAY 3/32 BALSA SIDE I/32PLYMOD WALL DOUBLER TO F2 FI TWO PART FIREWALL FROM 1/8 PLYWOOD MIDWEST L G STRAPS SCREW UNDER 1/8 PLY PLATRWI 1 3/16 MUSIC WIRE 1/16 PLYWOOD WEBS 4 BAYS 1/4 DOWEL WING HOLD DOWNS 3/16 SQ BALSA ENTIRE FiN ASSEMBLY 3/16 SQ BALSA ALL STABILIZER FRAMES 1/16 BALSA TOP AND BOTIOM PLANKS NYROD TO RUDDER CONTROL HORN NYROD 10 ELEVAlOR II LI \4fl4 3/16 S4EET BALSA RUDDER TAPE HINGES MIDWEST WNTROL HORNS 3/16 BALSA ELEVATOR II 3i6 BALSA BLOCK 1/32 PLIWOOD REINF 3/32 BALSA SIDE PLANKS ________________________ I/8SQ HARD BALSA ALL FUSELAGE LONGERONS AND BRACES 1/16 TR EDGE PLANKS -TOP AND BOTTOM 3/32 BALSA SPAR WEBBING 12 BAY 1/8 SQ TR EDGE FILLER \l 3/16 BALSA AILERONS 1/16 BALSA DOUBLER AT lop AND BOTUOM BALSA RIBS I/4SQ BALSA LEADING EDGE 3/16 X 3/8 HARD BALSA TOP AND BOTTOM SPARS 3/16SQ HARD BALSA LEADIIG EDGE SliFFENERS 1/32 PLYWOOD liP PLATES December 1978 21 K / 9 ers can used make firewall Cut shape glue together epoxy form firewall Drill firewall engine mounts fuel lines throttle linkage addition 1 / 16 sheet balsa wing center section fuselage top bottom completes kit Fuselage Epoxy 1/32 plywood doublers forward part fuselage sides making sure left right sides plywood doublers side cabin doublers notched fit over ply doubler glued place Longerons notched fit over cabin doublers glued uprights stabi lizer supports added last dry again pin two sides together sand edges true square Place side over side view plans mark location cabin formers side still flat plan glue cabin formers loca tions using square right triangle keep square fuselage side certain formers belong front front etc glue has set glue other side top formers using square make sure edges both sides square other front back top bottom dry place bottom fuselage flat work surface over top view plan Bring nose sides firewall epoxy place hold ing clamps string rubber bands whatever works Bring tail together beveling fit glueing being sure stabilizer cut-outs parallel work surface Locate position landing gear mount notch bottom fuselage sides 1/16 sheeting added landing gear mount wont stick up above Glue mount sheet bottom 1 / 16 balsa cross grain Cut exit holes outer nyrod install rods using epoxy exit fuselage side add bulkheads aft fuselage shown hold place Epoxy brass tube fuel over flow lines through firewall T nuts engine mount back Install fuel tank using foam bottom sides wedge tank position 3/16 balsa bulkhead hind Attach fuel overflow lines Use inner nyrod bring throttle through firewall cabin epoxy firewall Sheet fuse lage 1/16 firewall LI P%X OONON&L SOOO CO OMOMOOr 80*00 Crooo- 22 Model Aviation servo place aileron linkage hooked upall ready fly nree nooysnop strap iittings noia main gear plywood floor L7iTVXtvmi1HOOTS 0 0800 OOON00N0N j0T Strip ailerons one-piece elevator minimize fussing Red yellow color scheme eye-catching forward cabin former Cut hole sheeting inner nyrod nose gear steering shown Use epoxy microballoons install nyrod making sure extends well cabin Com plete top sheeting install cabin gussets fuselage ready finalto pin bottom trailing edge sandingsheeting place Glue piece /s sq back edge sheeting Using rib Wing Cover plans backingas gauge pin bottom main spar MonoKote film clean-plans center both wing panels ers bag keep structure stickingContinued page 99 I- Y ir' rT 1 L11 IL1[L t YflLSO.AJSNn ONN KJ 0454 4 * u moo. 00400kSO&NA 40 WOM 0601040 7*00oo.oOrt LmJ LrL_1 ____----5 STRAP~0046400 S&TION N-N December1978 23 Servo installation showing nosewheel throttle pushrods brought Randy seems have custom-tinkered servo arms Kratt 4-Ounce tank wedged piece foamneat installation II/ HI 1 / 0 N w 4 0 w w 0 w -J 4 -J 4 z 4 -J w N -J -J U Ace RIC proud announce new member family servos popular Digital Commander line radio equipment kits Bantam Midget brother Bantam servo has respected name servos years Bantam Midget considerably smaller lighter boasts same torque gear strength its big brother bit speed Notice extremely low profile--important interfacing elevator rudder servos aileron servo linkages Reread above paragraph consider fact Midget offers servo micro-miniature category also has power strength 60 powered pattern ships Truly universal servo Signetics 544 IC external driver transistors quality plastic conductive element pot other components make combination has become synonymous Ace R/C Digital Commander servos Servos have Competition Grade performance economical price tag Bantam Midget will work modern positive pulse system negative pulse systems ProLine etc pulse inverter 14G18--$2 required servo rotary wheel extended arm adjustable arm furnished No connectors furnished servo kits flite packs complete systems available Midget option please write details Bwnt4 /Wc44t Size Height--1125 Length--143 Width--O7 Weight 85 oz 24 grams Thrust 20 oz Transit Time Under 5 sec 900 BREAKTHROUGH IN SERVOS 14G20R--Bantam Midget Kit $2395 14G2ORC--Bantam Midget Assembled $2895 AG Please send yeur complete talog Enclased Si 00 refunded myNAME first order Add 550 far 1st clans mailADDRESS return add $100 handling oa ether dencur idea glide angle also re sponse rate elevator will valu able event have un expected engine flame-out Dead-stick landings easy wing full holes essentially case formation plane thing four-ounce tank well ahead CG Blue Birds get bit tailheavy fly tank dry No problem ready trim change avoid usually flying about two ounces worth Youll probably cuss times try figure out some less obvious construction features go ahead Persevere Youll hit show Blue Birds RC Technique/Myers continued page 17 engine Discussed above 4 Plan landing before take off obvious have wonder landings maneuver nearly everyone does poorly can see jaw muscles tighten eyes go squinty engine stops unexpectedly flight Now get out seems first thought heads Sure aware air plane accidents happen vicinity runway thats no reason panic glider easier land powered STATE zrROX 511E HIGGINSVILLE MO plane another aphorisms gives student confidence can land safely Concentrate keeping wings level simple instruction foremost mind students make good landings being aware fact plane has stopped moving Spot landings another matter like learning shoot gun first thing get shots part target Once happens its quite easy move group over Bullseye CORRECTIONS September issue Wing Sax trans portation bags GBS Enterprises re ferred Wind Sox regret error October issue page 60 center photo Keith Clodfelter erroneously identified James Duckworth November issue Wildcat RC scale model described article subhead requiring Pee Wee 02 although text plan cutaway drawing said TD TD theres world difference November issue Nats RC Pattern re port references Tony Bonetti tended mean flying skill better ever apologies Tony anyone else may have felt something else meant Tony has enviable track record Pattern competitOns Thats enough month Keep letters coming George Myers 70 Froehlich Farm Rd Hicksville NY 11801 M isfi it/Randolph continued page 23 ribs R2 located pin piece scrap 1/16 sheet between trailing edge main spar hold rib R2 up plans 1/16 bot tom sheeting added later will flush Glue first regular rib near center wing place over plan glue plywood webs spar its outboard side webbing makes excellent spacer assures ribs perpendicular spar well Continue adding ribs webs out tip no web between last few tip ribs After ribs place glue top main spar sure good contact webs well ribs Glue plywood web inboard first regular rib installed near center sec tion slide first R2 glue place Glue top front spar place bevel /8 sq trailing edge re ceive top trailing sheet glue place other half wing assem bled same sequence both wing halves have sembled bevel spars leading trailing edges will joined December1978 99 WORLD S LARGEST MASTER MODE S ASS T GIANTS OF ABOUT 5 10 FT SPANS Catalog Sssbsuriplion $8 Art mo IIi0 Order Pan no - numbers osk since ouese beconse n volunteer deriorsernire orgonisutioc orirhour denier supporr seC,rr98 Loek Hudson Bomb $4974Doolinln Gee Beo$4577 Flying Font 0-170$30 58Suyerrrorne 5dB$29102 Flying Forr 8-170$49 62Nousord Ike Boon$2365 M Monsuder 8-26$39 7$RTs Weddeli-Wos$39y 600 6 Comet Onuen$18y 74 yeseo Speulni$35 589970 62 HomMrMulljgunS32 60asu $1 Mosqoiro iSqrr 6321 $36 1$$ 70Onyic Gee-Bee$3965 BW Brd-0ye$29 55Heoth Boby Boiler$23$1 58Morebi M-5 Sen Fm$147$ 62 Corns 90mb P6E $39 107 Morrin MB-i Borrrb 60 Curl 7lrnike A-$$22 M Coudror 0-Ill Ob 015 60$ouglos 0-30 Ok $1561 AEG 019 Booker51$ 71Morrin 8-10 Bomb $205$ Snierson 2A2$15 43Skyrouker XF5F $1682 SleosnOub $19$30 57Curt Gb SG3C-1 $1516 Goriro 019 Booker$49 1100 PLANS AVAILABLE form dihedral angle done sanding block bench radial arm saw After beveling join two halves gether two main braces either side main spars trailing edge brace between top bottom trailing edge sheets Place wing half flat bench raise other wing tip until dihedral braces flush top bottom bath main spars center joint good fit trail mg edge Support wing angle glue dihedral braces Ali phatic resin glue recommended joint Clothes pins useful hold braces alignment glue dries Cut front two R2 ribs t main spar notch glue together center dihedral joint between main spar lead ing edge Add 3/16 balsa gussets side aft part R2s cut /$ aft main spar notch glued either side dihedral joint shown form cutout aileron servo piece scrap 1/16 balsa sheet between forms box Another piece scrap box trailing edge center completes structure sheeting Notice center sheeting between spars sheet bottom wing between R2s form box aileron servo Add 3/16 balsa gussets tip ribs wing ready finish sanding ailerons cut 3/16 balsa sheet sanded shape sanding block cut 1 tip bevel leading edges cut-offs glue wing tip trailing edges raised 1/16 gives washout wing tips Epoxy aileron hardware trailing edge shown original 1/16 ID brass tubing 1/16 wire bent form torque rod horn sure relieve trailing edge its back-up block allow movement aileron horns exit tubing Notch groove ailerons receive torque rods Install just prior covering Stabilizer Fin Rudder tail group built over plans thing re member add spar doublers before solid center section diagonal braces building stabilizer rudder elevator cut 3/16 sheet balsa pinned respective fixed surface final sanding usually apply good shot Hot Stuff location horns movable surface toughen up wood Completion parts sanded well 150 grit sandpaper Round edges fuselage except wing mount leading edges wing stabilizer fin rounded off well trailing edges elevator rudder piece l covered sandpaper excellent tool smooth inside gussets cabin wing tips think finished sand everything again 220 grit sandpaper Balance wing Use piece c wire fulcrum center wing use heaviest aileron side lightest wing panel still doesnt balance add weight light tip main spar can drilled tip accept whatever weight necessary plane should covered plas tic film like MonoKote use form hinges well Start rud der fin Iron 3/8-wide strip over trailing edge fin another strip same size over leading edge rudder strip should lap about / either side edges hinges made ironing 1/16 glue sides two pieces 1 MonoKote together form piece 1 15/16 glue side up half glue side down other half Two make hinge two hinges rudder four ele vator five ailerons hinge rudder fin iron hinge half top bottom side rudder turn over iron other two halves just inboard first ones joint hinge halves should fall right center rudder leading edge Bring rudder fin together crisscross hinges side rudder opposite side fin hold fin rudder position iron hinges fin both sides makes close strong hinge Cover fin rudder normal way hinge line fore aft procedure followed elevator well ailerons ailerons hinged torque rod epoxied aileron same time joined wing hinges will hold alignment until epoxy sets Epoxy tip plates wing after have covered Cut away covering tip plates contact wing tip After fuselage covered glue l wing holddowns Using polyurethane paint match trim paint firewall over lapping MonoKote little seal edges joints Black MonoKote stripped 1/16 wide makes good pin stripes between colors used trim Install engine mount 4-40 X bolts drilled accept engine hole drilled down through back part mount nose gear shown Bend main gear 3/32 music wire shape shown plans install plywood landing gear mount bottom fuselage metal landing gear mounting strips small wood screws screws cut off point does stick through plywood cabin Use epoxy holes fore screwing last time Bend nose gear music wire Instail wheel collar just above coil bear bottom engine mount Solder collar gear Another wheel collar top secures gear Mount steering arm above top collar engage piece 040 music wirefrom rudder servo through inner nyrod top left side fuselage mount servos plywood trays small wood screws trays Hot Stuffed fuselage sides proper place bring CG alignment Install aileron servo wood screws small plywood pads Hot-Stuffed top 3/16 balsa risers front back servo cut-out bottom wing servo should fit far down cut-out possible Hook up ailerons ele vator rudder install engine prop lets go Hying Range check before test flying radio installation different take few extra minutes check make sure ai lerons hooked up correctly CG should just under main spar should no noticeable warps wing tail Set control surfaces neutral ailerons flat bottom wing trim levers middle range Start engine set idle check control movements high low throttle taxi around runway min ute two get feel rudder throttle head wind go Misfit requires guidance Wherever leave will remain air plane called neutral stability As ability will complete slow roll straight up before running out steam loops can big round pattern style little button hooks Inverted flight easy little forward push elevator trim lever knife-edge flight dont use full aileron rudder wont hold Instead use full rudder fly ailerons Snaps spins require full elevator full rudder full aileron aileron can relaxed after spin initiated recovery rapid neu tralized controls Landings gentle since ailerons solid well stall wing tips have no tendency fall off fact Misfit can flown full up 100 Model Aviation elevator just enough throttle remain airborne still answer ailerons good 20 will enhance vertical per formance other worth trouble See later Im going flitting RC Scale Wischers continued page 25 didnt crash takeoff surest way us convince other modelers try hands scale prevent ac cidents being well practiced other planes before attempting flights scale models often heard excuse scale planes hard fly easily damaged crashed no longer valid Scale Wheels avid scale buffs have making own tires complete side-wall lettering number years first saw Toledo DeHavilland Hornet built Dario Bris ighella displayed machined mold ing dies used form tires silicone rubber Woodvale World Champion ships first-place winning Fournier Mick Reeves also hand-made tire its single landing wheel complete legible lettering side walls Mick used silicone rubber rather thick section support weight lettering scale size quite small therefore difficult engrave mold ing die example exten sive effort required world class model effect rule states FAI contest entrant must make declaration items used plane made builder planes wheels tires appear list parts quite often parts purchased FAI Precision Scale possible detail made builder Robart now producing Universal Scale Wheels lettering side walls Hubs molded high strength Lexan Tires low rebound thermoplas tic rubber Continental Deutsches Fabrikat 690 side wingfoot insignia Goodyear Weather 32 X 8 Airplane other side using wheels have found necessary maximum realism remove gloss tire material happens naturally age user may wish hasten process buffing fine sandpaper rubbing very gently cloth moistened dope thinner Robart now furnishes instructions three alternative methods inflating tires withstand load heavier scale models include use dry ice Alka Seltzer pressurizing agents Also described old method refrigerat ing wheel cause contraction air sealing screws loosened screws rapidly tightened trapped air expands room temperature pressurize tire hub discs furnished Robart can modified closely resemble pro totype wheels reworking center disc can removed drill ing filing leave rim new disc plywood styrene plastic epoxied back give depth hub disc Small bits tubing hex screw heads epoxied place ideal use new Hobbypoxy Thixotropic Epoxy Glue stays put applied does run discs painted dull aluminum Floquil resemble wheel castings prototype appearance improvement worthwhile Sport Scale plane detail can seen distance problem have Robart tires flat spot occurs tires model stands position prolonged period solved mak ing balsa stand support plane axles remove load tires flat spot difficult remove model will bounce unrealistically taxiing flats persist Pressurizing helps round out flattened tire Another method suggested Mike Gretz stuff Robart tires firm poly foam preference frequent inflation have also used two sets wheels dis play other flying display tires stuffed balsa discs cut seg ments easy assembly would suitable flying very hard would absorb no landing shock Flap Effectiveness use flaps pro totype airplanes has become common almost model modern plane will likely use seems no agreement between modelers ef fect takeoff landing expe rience no surprise between similar planes effect flaps hard predict until plane flown plane complete disappointment seem have no effect whatever another plane definitely slowed flaps applied Very likely good explanation variation lack aerodynamic knowledge ob scures reason increase lift drag flaps lowered model flying near cruising speed crease lift will cause momentary climb ballooning same time ad ditional drag will slow plane cause steepening glide angle steeper angle modeler attempting spot landing advantage makes point touch-down predictable some planes additional effect increase stability flaps lowered plane seems find groove undisturbed wind conditions Having slowed drag controls become less effective small stick movements have less effect glide path Most advantages flaps fullscale planes small consequence model especially true flaps used takeoff no good reason increase drag models require increase lift except four-engine 120-pound monsters marginal power have seen recently addition flaps actu ating mechanism servo adds large amount weight model could very well nullify benefits derived use trim change flaps lowered could source problems time least appreciated especially true contest judges ask December 1978 101 AM Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST R/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-RAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Mode4 Co Inc US ftte 1& North St Topsfjeld Mass 01983 887-8541 Support AMA Price $3995 kit per dollar bar em all
Edition: Model Aviation - 1978/12
Page Numbers: 18, 19, 20, 21, 22, 23, 99, 100, 101
For four channels 15 engine responsive sport machine fully aerobaticat cost wont blow away allowance U 1 F Randolph ONE OF MY flying buddies claims airplanes flit rather fly true have known fly large fuel-guzzling 40s occa sions like small quick airplanes Misfit same flying buddy also thinks should build stand-off scale models lots guns bombs make lots smoke noise does airplane does look like model air plane no interest Misfit looks like model airplane Misfit quick forgiving airplane addition wing tip plates something goes back free-flight days fore WW II built wash-in both tips make airplane must made snap ailerons remain active well stall sum up Misfit groovy rolling spinning snapping looping knife-edging fun-fly winner will go point what ask ask too much forgive Misfit cheap date too gallon low-nitro fuel will fly 10 hours 40 minutes full bore half throttle will produce well over 15 hours fun same price quick inexpensive build big enough seen reasonable distance yet small enough go flying field piece Kit Make template wing rib old file folder other thin stiff paper use ball-point pen make 18 Model Aviation Ready flight 1 5-powered Misfit conveys feeling competent deaign reenforced study Neil Uptaks sharply drawn plan Tip plates simulated cabin enhance its looks printed sheet two pieces medium hard 1/16 X 3 X 36 balsa Move tem plate around find ribs can cut sheet need 24 After ribs have cut out gang sanded same shape size tem plate take four center stack cut 1/16 top bottom center ribs will receive sheeting mark R2 trailing edge sheeting cut piece 1/16 X 3 X 36 hard balsa Because four inch wide fourth must made splicing three have stripped cut length 221/16 remaining one-inch-wide strips spliced form fourth wing spars stripped sheet 3/16 X 3 X 36 medium hard balsa Cut eight strips 3/16 sq four strips 3/16 3/8 extra 3/16 sq stabilizer rudder spar webbing 1-15/16 1 1/16 16 vertical grain balsa four plywood dihedral braces cut 1/s ply wood landing gear mount stabilizer spar doublers 3/16 strips cut 1/32 plywood used wing tip plates Cut fuselage sides two pieces medium soft 3/32 X 4 X 36 balsa shape shown plan side view lines straight use straight edge Pin two sides together gang sand same outline 1/32 ply doublers cut fit finished sides left right cabin doublers cut 1 / 16 sheet balsa longerons uprights /t sq soft balsa Cut cabin formers /s plywood center cut-outs December1978 19 designer flies aircraft camera typical pass nandy likes planes flit nervous stick tweakers should happy its responsiveness Gallon fuel gives 15 hours Assembled fuselage sides before joining togethernote longe rona notched fit over doublers Its textbook structure aileron servo well formed after wing panels have joined together top center section sheeting completed messy slotting pinning epoxy annoy simple MonoOte hinged rudder takes little time neat Hinges before covering Aileron torque rods installed what has become almost standard arrangement Note aileron grooved receive rod 0 S / 1/8 PLYWOOD DIHEDRAL BRACES 1/4 SPRUCE DRILLED FOR AILERON LINKAGE ADJUSTABLE STEER 1/16 BALSA DECK FORMER BELLCRANK N 1 3/4 SPINNER 15 MAX ENGINE ON TATONE MOUNT 1/2 WHEELS 3 ALIKE-~ 20 Model Aviation SERA TRAY 3/32 BALSA SIDE I/32PLYMOD WALL DOUBLER TO F2 FI TWO PART FIREWALL FROM 1/8 PLYWOOD MIDWEST L G STRAPS SCREW UNDER 1/8 PLY PLATRWI 1 3/16 MUSIC WIRE 1/16 PLYWOOD WEBS 4 BAYS 1/4 DOWEL WING HOLD DOWNS 3/16 SQ BALSA ENTIRE FiN ASSEMBLY 3/16 SQ BALSA ALL STABILIZER FRAMES 1/16 BALSA TOP AND BOTIOM PLANKS NYROD TO RUDDER CONTROL HORN NYROD 10 ELEVAlOR II LI \4fl4 3/16 S4EET BALSA RUDDER TAPE HINGES MIDWEST WNTROL HORNS 3/16 BALSA ELEVATOR II 3i6 BALSA BLOCK 1/32 PLIWOOD REINF 3/32 BALSA SIDE PLANKS ________________________ I/8SQ HARD BALSA ALL FUSELAGE LONGERONS AND BRACES 1/16 TR EDGE PLANKS -TOP AND BOTTOM 3/32 BALSA SPAR WEBBING 12 BAY 1/8 SQ TR EDGE FILLER \l 3/16 BALSA AILERONS 1/16 BALSA DOUBLER AT lop AND BOTUOM BALSA RIBS I/4SQ BALSA LEADING EDGE 3/16 X 3/8 HARD BALSA TOP AND BOTTOM SPARS 3/16SQ HARD BALSA LEADIIG EDGE SliFFENERS 1/32 PLYWOOD liP PLATES December 1978 21 K / 9 ers can used make firewall Cut shape glue together epoxy form firewall Drill firewall engine mounts fuel lines throttle linkage addition 1 / 16 sheet balsa wing center section fuselage top bottom completes kit Fuselage Epoxy 1/32 plywood doublers forward part fuselage sides making sure left right sides plywood doublers side cabin doublers notched fit over ply doubler glued place Longerons notched fit over cabin doublers glued uprights stabi lizer supports added last dry again pin two sides together sand edges true square Place side over side view plans mark location cabin formers side still flat plan glue cabin formers loca tions using square right triangle keep square fuselage side certain formers belong front front etc glue has set glue other side top formers using square make sure edges both sides square other front back top bottom dry place bottom fuselage flat work surface over top view plan Bring nose sides firewall epoxy place hold ing clamps string rubber bands whatever works Bring tail together beveling fit glueing being sure stabilizer cut-outs parallel work surface Locate position landing gear mount notch bottom fuselage sides 1/16 sheeting added landing gear mount wont stick up above Glue mount sheet bottom 1 / 16 balsa cross grain Cut exit holes outer nyrod install rods using epoxy exit fuselage side add bulkheads aft fuselage shown hold place Epoxy brass tube fuel over flow lines through firewall T nuts engine mount back Install fuel tank using foam bottom sides wedge tank position 3/16 balsa bulkhead hind Attach fuel overflow lines Use inner nyrod bring throttle through firewall cabin epoxy firewall Sheet fuse lage 1/16 firewall LI P%X OONON&L SOOO CO OMOMOOr 80*00 Crooo- 22 Model Aviation servo place aileron linkage hooked upall ready fly nree nooysnop strap iittings noia main gear plywood floor L7iTVXtvmi1HOOTS 0 0800 OOON00N0N j0T Strip ailerons one-piece elevator minimize fussing Red yellow color scheme eye-catching forward cabin former Cut hole sheeting inner nyrod nose gear steering shown Use epoxy microballoons install nyrod making sure extends well cabin Com plete top sheeting install cabin gussets fuselage ready finalto pin bottom trailing edge sandingsheeting place Glue piece /s sq back edge sheeting Using rib Wing Cover plans backingas gauge pin bottom main spar MonoKote film clean-plans center both wing panels ers bag keep structure stickingContinued page 99 I- Y ir' rT 1 L11 IL1[L t YflLSO.AJSNn ONN KJ 0454 4 * u moo. 00400kSO&NA 40 WOM 0601040 7*00oo.oOrt LmJ LrL_1 ____----5 STRAP~0046400 S&TION N-N December1978 23 Servo installation showing nosewheel throttle pushrods brought Randy seems have custom-tinkered servo arms Kratt 4-Ounce tank wedged piece foamneat installation II/ HI 1 / 0 N w 4 0 w w 0 w -J 4 -J 4 z 4 -J w N -J -J U Ace RIC proud announce new member family servos popular Digital Commander line radio equipment kits Bantam Midget brother Bantam servo has respected name servos years Bantam Midget considerably smaller lighter boasts same torque gear strength its big brother bit speed Notice extremely low profile--important interfacing elevator rudder servos aileron servo linkages Reread above paragraph consider fact Midget offers servo micro-miniature category also has power strength 60 powered pattern ships Truly universal servo Signetics 544 IC external driver transistors quality plastic conductive element pot other components make combination has become synonymous Ace R/C Digital Commander servos Servos have Competition Grade performance economical price tag Bantam Midget will work modern positive pulse system negative pulse systems ProLine etc pulse inverter 14G18--$2 required servo rotary wheel extended arm adjustable arm furnished No connectors furnished servo kits flite packs complete systems available Midget option please write details Bwnt4 /Wc44t Size Height--1125 Length--143 Width--O7 Weight 85 oz 24 grams Thrust 20 oz Transit Time Under 5 sec 900 BREAKTHROUGH IN SERVOS 14G20R--Bantam Midget Kit $2395 14G2ORC--Bantam Midget Assembled $2895 AG Please send yeur complete talog Enclased Si 00 refunded myNAME first order Add 550 far 1st clans mailADDRESS return add $100 handling oa ether dencur idea glide angle also re sponse rate elevator will valu able event have un expected engine flame-out Dead-stick landings easy wing full holes essentially case formation plane thing four-ounce tank well ahead CG Blue Birds get bit tailheavy fly tank dry No problem ready trim change avoid usually flying about two ounces worth Youll probably cuss times try figure out some less obvious construction features go ahead Persevere Youll hit show Blue Birds RC Technique/Myers continued page 17 engine Discussed above 4 Plan landing before take off obvious have wonder landings maneuver nearly everyone does poorly can see jaw muscles tighten eyes go squinty engine stops unexpectedly flight Now get out seems first thought heads Sure aware air plane accidents happen vicinity runway thats no reason panic glider easier land powered STATE zrROX 511E HIGGINSVILLE MO plane another aphorisms gives student confidence can land safely Concentrate keeping wings level simple instruction foremost mind students make good landings being aware fact plane has stopped moving Spot landings another matter like learning shoot gun first thing get shots part target Once happens its quite easy move group over Bullseye CORRECTIONS September issue Wing Sax trans portation bags GBS Enterprises re ferred Wind Sox regret error October issue page 60 center photo Keith Clodfelter erroneously identified James Duckworth November issue Wildcat RC scale model described article subhead requiring Pee Wee 02 although text plan cutaway drawing said TD TD theres world difference November issue Nats RC Pattern re port references Tony Bonetti tended mean flying skill better ever apologies Tony anyone else may have felt something else meant Tony has enviable track record Pattern competitOns Thats enough month Keep letters coming George Myers 70 Froehlich Farm Rd Hicksville NY 11801 M isfi it/Randolph continued page 23 ribs R2 located pin piece scrap 1/16 sheet between trailing edge main spar hold rib R2 up plans 1/16 bot tom sheeting added later will flush Glue first regular rib near center wing place over plan glue plywood webs spar its outboard side webbing makes excellent spacer assures ribs perpendicular spar well Continue adding ribs webs out tip no web between last few tip ribs After ribs place glue top main spar sure good contact webs well ribs Glue plywood web inboard first regular rib installed near center sec tion slide first R2 glue place Glue top front spar place bevel /8 sq trailing edge re ceive top trailing sheet glue place other half wing assem bled same sequence both wing halves have sembled bevel spars leading trailing edges will joined December1978 99 WORLD S LARGEST MASTER MODE S ASS T GIANTS OF ABOUT 5 10 FT SPANS Catalog Sssbsuriplion $8 Art mo IIi0 Order Pan no - numbers osk since ouese beconse n volunteer deriorsernire orgonisutioc orirhour denier supporr seC,rr98 Loek Hudson Bomb $4974Doolinln Gee Beo$4577 Flying Font 0-170$30 58Suyerrrorne 5dB$29102 Flying Forr 8-170$49 62Nousord Ike Boon$2365 M Monsuder 8-26$39 7$RTs Weddeli-Wos$39y 600 6 Comet Onuen$18y 74 yeseo Speulni$35 589970 62 HomMrMulljgunS32 60asu $1 Mosqoiro iSqrr 6321 $36 1$$ 70Onyic Gee-Bee$3965 BW Brd-0ye$29 55Heoth Boby Boiler$23$1 58Morebi M-5 Sen Fm$147$ 62 Corns 90mb P6E $39 107 Morrin MB-i Borrrb 60 Curl 7lrnike A-$$22 M Coudror 0-Ill Ob 015 60$ouglos 0-30 Ok $1561 AEG 019 Booker51$ 71Morrin 8-10 Bomb $205$ Snierson 2A2$15 43Skyrouker XF5F $1682 SleosnOub $19$30 57Curt Gb SG3C-1 $1516 Goriro 019 Booker$49 1100 PLANS AVAILABLE form dihedral angle done sanding block bench radial arm saw After beveling join two halves gether two main braces either side main spars trailing edge brace between top bottom trailing edge sheets Place wing half flat bench raise other wing tip until dihedral braces flush top bottom bath main spars center joint good fit trail mg edge Support wing angle glue dihedral braces Ali phatic resin glue recommended joint Clothes pins useful hold braces alignment glue dries Cut front two R2 ribs t main spar notch glue together center dihedral joint between main spar lead ing edge Add 3/16 balsa gussets side aft part R2s cut /$ aft main spar notch glued either side dihedral joint shown form cutout aileron servo piece scrap 1/16 balsa sheet between forms box Another piece scrap box trailing edge center completes structure sheeting Notice center sheeting between spars sheet bottom wing between R2s form box aileron servo Add 3/16 balsa gussets tip ribs wing ready finish sanding ailerons cut 3/16 balsa sheet sanded shape sanding block cut 1 tip bevel leading edges cut-offs glue wing tip trailing edges raised 1/16 gives washout wing tips Epoxy aileron hardware trailing edge shown original 1/16 ID brass tubing 1/16 wire bent form torque rod horn sure relieve trailing edge its back-up block allow movement aileron horns exit tubing Notch groove ailerons receive torque rods Install just prior covering Stabilizer Fin Rudder tail group built over plans thing re member add spar doublers before solid center section diagonal braces building stabilizer rudder elevator cut 3/16 sheet balsa pinned respective fixed surface final sanding usually apply good shot Hot Stuff location horns movable surface toughen up wood Completion parts sanded well 150 grit sandpaper Round edges fuselage except wing mount leading edges wing stabilizer fin rounded off well trailing edges elevator rudder piece l covered sandpaper excellent tool smooth inside gussets cabin wing tips think finished sand everything again 220 grit sandpaper Balance wing Use piece c wire fulcrum center wing use heaviest aileron side lightest wing panel still doesnt balance add weight light tip main spar can drilled tip accept whatever weight necessary plane should covered plas tic film like MonoKote use form hinges well Start rud der fin Iron 3/8-wide strip over trailing edge fin another strip same size over leading edge rudder strip should lap about / either side edges hinges made ironing 1/16 glue sides two pieces 1 MonoKote together form piece 1 15/16 glue side up half glue side down other half Two make hinge two hinges rudder four ele vator five ailerons hinge rudder fin iron hinge half top bottom side rudder turn over iron other two halves just inboard first ones joint hinge halves should fall right center rudder leading edge Bring rudder fin together crisscross hinges side rudder opposite side fin hold fin rudder position iron hinges fin both sides makes close strong hinge Cover fin rudder normal way hinge line fore aft procedure followed elevator well ailerons ailerons hinged torque rod epoxied aileron same time joined wing hinges will hold alignment until epoxy sets Epoxy tip plates wing after have covered Cut away covering tip plates contact wing tip After fuselage covered glue l wing holddowns Using polyurethane paint match trim paint firewall over lapping MonoKote little seal edges joints Black MonoKote stripped 1/16 wide makes good pin stripes between colors used trim Install engine mount 4-40 X bolts drilled accept engine hole drilled down through back part mount nose gear shown Bend main gear 3/32 music wire shape shown plans install plywood landing gear mount bottom fuselage metal landing gear mounting strips small wood screws screws cut off point does stick through plywood cabin Use epoxy holes fore screwing last time Bend nose gear music wire Instail wheel collar just above coil bear bottom engine mount Solder collar gear Another wheel collar top secures gear Mount steering arm above top collar engage piece 040 music wirefrom rudder servo through inner nyrod top left side fuselage mount servos plywood trays small wood screws trays Hot Stuffed fuselage sides proper place bring CG alignment Install aileron servo wood screws small plywood pads Hot-Stuffed top 3/16 balsa risers front back servo cut-out bottom wing servo should fit far down cut-out possible Hook up ailerons ele vator rudder install engine prop lets go Hying Range check before test flying radio installation different take few extra minutes check make sure ai lerons hooked up correctly CG should just under main spar should no noticeable warps wing tail Set control surfaces neutral ailerons flat bottom wing trim levers middle range Start engine set idle check control movements high low throttle taxi around runway min ute two get feel rudder throttle head wind go Misfit requires guidance Wherever leave will remain air plane called neutral stability As ability will complete slow roll straight up before running out steam loops can big round pattern style little button hooks Inverted flight easy little forward push elevator trim lever knife-edge flight dont use full aileron rudder wont hold Instead use full rudder fly ailerons Snaps spins require full elevator full rudder full aileron aileron can relaxed after spin initiated recovery rapid neu tralized controls Landings gentle since ailerons solid well stall wing tips have no tendency fall off fact Misfit can flown full up 100 Model Aviation elevator just enough throttle remain airborne still answer ailerons good 20 will enhance vertical per formance other worth trouble See later Im going flitting RC Scale Wischers continued page 25 didnt crash takeoff surest way us convince other modelers try hands scale prevent ac cidents being well practiced other planes before attempting flights scale models often heard excuse scale planes hard fly easily damaged crashed no longer valid Scale Wheels avid scale buffs have making own tires complete side-wall lettering number years first saw Toledo DeHavilland Hornet built Dario Bris ighella displayed machined mold ing dies used form tires silicone rubber Woodvale World Champion ships first-place winning Fournier Mick Reeves also hand-made tire its single landing wheel complete legible lettering side walls Mick used silicone rubber rather thick section support weight lettering scale size quite small therefore difficult engrave mold ing die example exten sive effort required world class model effect rule states FAI contest entrant must make declaration items used plane made builder planes wheels tires appear list parts quite often parts purchased FAI Precision Scale possible detail made builder Robart now producing Universal Scale Wheels lettering side walls Hubs molded high strength Lexan Tires low rebound thermoplas tic rubber Continental Deutsches Fabrikat 690 side wingfoot insignia Goodyear Weather 32 X 8 Airplane other side using wheels have found necessary maximum realism remove gloss tire material happens naturally age user may wish hasten process buffing fine sandpaper rubbing very gently cloth moistened dope thinner Robart now furnishes instructions three alternative methods inflating tires withstand load heavier scale models include use dry ice Alka Seltzer pressurizing agents Also described old method refrigerat ing wheel cause contraction air sealing screws loosened screws rapidly tightened trapped air expands room temperature pressurize tire hub discs furnished Robart can modified closely resemble pro totype wheels reworking center disc can removed drill ing filing leave rim new disc plywood styrene plastic epoxied back give depth hub disc Small bits tubing hex screw heads epoxied place ideal use new Hobbypoxy Thixotropic Epoxy Glue stays put applied does run discs painted dull aluminum Floquil resemble wheel castings prototype appearance improvement worthwhile Sport Scale plane detail can seen distance problem have Robart tires flat spot occurs tires model stands position prolonged period solved mak ing balsa stand support plane axles remove load tires flat spot difficult remove model will bounce unrealistically taxiing flats persist Pressurizing helps round out flattened tire Another method suggested Mike Gretz stuff Robart tires firm poly foam preference frequent inflation have also used two sets wheels dis play other flying display tires stuffed balsa discs cut seg ments easy assembly would suitable flying very hard would absorb no landing shock Flap Effectiveness use flaps pro totype airplanes has become common almost model modern plane will likely use seems no agreement between modelers ef fect takeoff landing expe rience no surprise between similar planes effect flaps hard predict until plane flown plane complete disappointment seem have no effect whatever another plane definitely slowed flaps applied Very likely good explanation variation lack aerodynamic knowledge ob scures reason increase lift drag flaps lowered model flying near cruising speed crease lift will cause momentary climb ballooning same time ad ditional drag will slow plane cause steepening glide angle steeper angle modeler attempting spot landing advantage makes point touch-down predictable some planes additional effect increase stability flaps lowered plane seems find groove undisturbed wind conditions Having slowed drag controls become less effective small stick movements have less effect glide path Most advantages flaps fullscale planes small consequence model especially true flaps used takeoff no good reason increase drag models require increase lift except four-engine 120-pound monsters marginal power have seen recently addition flaps actu ating mechanism servo adds large amount weight model could very well nullify benefits derived use trim change flaps lowered could source problems time least appreciated especially true contest judges ask December 1978 101 AM Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST R/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-RAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Mode4 Co Inc US ftte 1& North St Topsfjeld Mass 01983 887-8541 Support AMA Price $3995 kit per dollar bar em all
Edition: Model Aviation - 1978/12
Page Numbers: 18, 19, 20, 21, 22, 23, 99, 100, 101
For four channels 15 engine responsive sport machine fully aerobaticat cost wont blow away allowance U 1 F Randolph ONE OF MY flying buddies claims airplanes flit rather fly true have known fly large fuel-guzzling 40s occa sions like small quick airplanes Misfit same flying buddy also thinks should build stand-off scale models lots guns bombs make lots smoke noise does airplane does look like model air plane no interest Misfit looks like model airplane Misfit quick forgiving airplane addition wing tip plates something goes back free-flight days fore WW II built wash-in both tips make airplane must made snap ailerons remain active well stall sum up Misfit groovy rolling spinning snapping looping knife-edging fun-fly winner will go point what ask ask too much forgive Misfit cheap date too gallon low-nitro fuel will fly 10 hours 40 minutes full bore half throttle will produce well over 15 hours fun same price quick inexpensive build big enough seen reasonable distance yet small enough go flying field piece Kit Make template wing rib old file folder other thin stiff paper use ball-point pen make 18 Model Aviation Ready flight 1 5-powered Misfit conveys feeling competent deaign reenforced study Neil Uptaks sharply drawn plan Tip plates simulated cabin enhance its looks printed sheet two pieces medium hard 1/16 X 3 X 36 balsa Move tem plate around find ribs can cut sheet need 24 After ribs have cut out gang sanded same shape size tem plate take four center stack cut 1/16 top bottom center ribs will receive sheeting mark R2 trailing edge sheeting cut piece 1/16 X 3 X 36 hard balsa Because four inch wide fourth must made splicing three have stripped cut length 221/16 remaining one-inch-wide strips spliced form fourth wing spars stripped sheet 3/16 X 3 X 36 medium hard balsa Cut eight strips 3/16 sq four strips 3/16 3/8 extra 3/16 sq stabilizer rudder spar webbing 1-15/16 1 1/16 16 vertical grain balsa four plywood dihedral braces cut 1/s ply wood landing gear mount stabilizer spar doublers 3/16 strips cut 1/32 plywood used wing tip plates Cut fuselage sides two pieces medium soft 3/32 X 4 X 36 balsa shape shown plan side view lines straight use straight edge Pin two sides together gang sand same outline 1/32 ply doublers cut fit finished sides left right cabin doublers cut 1 / 16 sheet balsa longerons uprights /t sq soft balsa Cut cabin formers /s plywood center cut-outs December1978 19 designer flies aircraft camera typical pass nandy likes planes flit nervous stick tweakers should happy its responsiveness Gallon fuel gives 15 hours Assembled fuselage sides before joining togethernote longe rona notched fit over doublers Its textbook structure aileron servo well formed after wing panels have joined together top center section sheeting completed messy slotting pinning epoxy annoy simple MonoOte hinged rudder takes little time neat Hinges before covering Aileron torque rods installed what has become almost standard arrangement Note aileron grooved receive rod 0 S / 1/8 PLYWOOD DIHEDRAL BRACES 1/4 SPRUCE DRILLED FOR AILERON LINKAGE ADJUSTABLE STEER 1/16 BALSA DECK FORMER BELLCRANK N 1 3/4 SPINNER 15 MAX ENGINE ON TATONE MOUNT 1/2 WHEELS 3 ALIKE-~ 20 Model Aviation SERA TRAY 3/32 BALSA SIDE I/32PLYMOD WALL DOUBLER TO F2 FI TWO PART FIREWALL FROM 1/8 PLYWOOD MIDWEST L G STRAPS SCREW UNDER 1/8 PLY PLATRWI 1 3/16 MUSIC WIRE 1/16 PLYWOOD WEBS 4 BAYS 1/4 DOWEL WING HOLD DOWNS 3/16 SQ BALSA ENTIRE FiN ASSEMBLY 3/16 SQ BALSA ALL STABILIZER FRAMES 1/16 BALSA TOP AND BOTIOM PLANKS NYROD TO RUDDER CONTROL HORN NYROD 10 ELEVAlOR II LI \4fl4 3/16 S4EET BALSA RUDDER TAPE HINGES MIDWEST WNTROL HORNS 3/16 BALSA ELEVATOR II 3i6 BALSA BLOCK 1/32 PLIWOOD REINF 3/32 BALSA SIDE PLANKS ________________________ I/8SQ HARD BALSA ALL FUSELAGE LONGERONS AND BRACES 1/16 TR EDGE PLANKS -TOP AND BOTTOM 3/32 BALSA SPAR WEBBING 12 BAY 1/8 SQ TR EDGE FILLER \l 3/16 BALSA AILERONS 1/16 BALSA DOUBLER AT lop AND BOTUOM BALSA RIBS I/4SQ BALSA LEADING EDGE 3/16 X 3/8 HARD BALSA TOP AND BOTTOM SPARS 3/16SQ HARD BALSA LEADIIG EDGE SliFFENERS 1/32 PLYWOOD liP PLATES December 1978 21 K / 9 ers can used make firewall Cut shape glue together epoxy form firewall Drill firewall engine mounts fuel lines throttle linkage addition 1 / 16 sheet balsa wing center section fuselage top bottom completes kit Fuselage Epoxy 1/32 plywood doublers forward part fuselage sides making sure left right sides plywood doublers side cabin doublers notched fit over ply doubler glued place Longerons notched fit over cabin doublers glued uprights stabi lizer supports added last dry again pin two sides together sand edges true square Place side over side view plans mark location cabin formers side still flat plan glue cabin formers loca tions using square right triangle keep square fuselage side certain formers belong front front etc glue has set glue other side top formers using square make sure edges both sides square other front back top bottom dry place bottom fuselage flat work surface over top view plan Bring nose sides firewall epoxy place hold ing clamps string rubber bands whatever works Bring tail together beveling fit glueing being sure stabilizer cut-outs parallel work surface Locate position landing gear mount notch bottom fuselage sides 1/16 sheeting added landing gear mount wont stick up above Glue mount sheet bottom 1 / 16 balsa cross grain Cut exit holes outer nyrod install rods using epoxy exit fuselage side add bulkheads aft fuselage shown hold place Epoxy brass tube fuel over flow lines through firewall T nuts engine mount back Install fuel tank using foam bottom sides wedge tank position 3/16 balsa bulkhead hind Attach fuel overflow lines Use inner nyrod bring throttle through firewall cabin epoxy firewall Sheet fuse lage 1/16 firewall LI P%X OONON&L SOOO CO OMOMOOr 80*00 Crooo- 22 Model Aviation servo place aileron linkage hooked upall ready fly nree nooysnop strap iittings noia main gear plywood floor L7iTVXtvmi1HOOTS 0 0800 OOON00N0N j0T Strip ailerons one-piece elevator minimize fussing Red yellow color scheme eye-catching forward cabin former Cut hole sheeting inner nyrod nose gear steering shown Use epoxy microballoons install nyrod making sure extends well cabin Com plete top sheeting install cabin gussets fuselage ready finalto pin bottom trailing edge sandingsheeting place Glue piece /s sq back edge sheeting Using rib Wing Cover plans backingas gauge pin bottom main spar MonoKote film clean-plans center both wing panels ers bag keep structure stickingContinued page 99 I- Y ir' rT 1 L11 IL1[L t YflLSO.AJSNn ONN KJ 0454 4 * u moo. 00400kSO&NA 40 WOM 0601040 7*00oo.oOrt LmJ LrL_1 ____----5 STRAP~0046400 S&TION N-N December1978 23 Servo installation showing nosewheel throttle pushrods brought Randy seems have custom-tinkered servo arms Kratt 4-Ounce tank wedged piece foamneat installation II/ HI 1 / 0 N w 4 0 w w 0 w -J 4 -J 4 z 4 -J w N -J -J U Ace RIC proud announce new member family servos popular Digital Commander line radio equipment kits Bantam Midget brother Bantam servo has respected name servos years Bantam Midget considerably smaller lighter boasts same torque gear strength its big brother bit speed Notice extremely low profile--important interfacing elevator rudder servos aileron servo linkages Reread above paragraph consider fact Midget offers servo micro-miniature category also has power strength 60 powered pattern ships Truly universal servo Signetics 544 IC external driver transistors quality plastic conductive element pot other components make combination has become synonymous Ace R/C Digital Commander servos Servos have Competition Grade performance economical price tag Bantam Midget will work modern positive pulse system negative pulse systems ProLine etc pulse inverter 14G18--$2 required servo rotary wheel extended arm adjustable arm furnished No connectors furnished servo kits flite packs complete systems available Midget option please write details Bwnt4 /Wc44t Size Height--1125 Length--143 Width--O7 Weight 85 oz 24 grams Thrust 20 oz Transit Time Under 5 sec 900 BREAKTHROUGH IN SERVOS 14G20R--Bantam Midget Kit $2395 14G2ORC--Bantam Midget Assembled $2895 AG Please send yeur complete talog Enclased Si 00 refunded myNAME first order Add 550 far 1st clans mailADDRESS return add $100 handling oa ether dencur idea glide angle also re sponse rate elevator will valu able event have un expected engine flame-out Dead-stick landings easy wing full holes essentially case formation plane thing four-ounce tank well ahead CG Blue Birds get bit tailheavy fly tank dry No problem ready trim change avoid usually flying about two ounces worth Youll probably cuss times try figure out some less obvious construction features go ahead Persevere Youll hit show Blue Birds RC Technique/Myers continued page 17 engine Discussed above 4 Plan landing before take off obvious have wonder landings maneuver nearly everyone does poorly can see jaw muscles tighten eyes go squinty engine stops unexpectedly flight Now get out seems first thought heads Sure aware air plane accidents happen vicinity runway thats no reason panic glider easier land powered STATE zrROX 511E HIGGINSVILLE MO plane another aphorisms gives student confidence can land safely Concentrate keeping wings level simple instruction foremost mind students make good landings being aware fact plane has stopped moving Spot landings another matter like learning shoot gun first thing get shots part target Once happens its quite easy move group over Bullseye CORRECTIONS September issue Wing Sax trans portation bags GBS Enterprises re ferred Wind Sox regret error October issue page 60 center photo Keith Clodfelter erroneously identified James Duckworth November issue Wildcat RC scale model described article subhead requiring Pee Wee 02 although text plan cutaway drawing said TD TD theres world difference November issue Nats RC Pattern re port references Tony Bonetti tended mean flying skill better ever apologies Tony anyone else may have felt something else meant Tony has enviable track record Pattern competitOns Thats enough month Keep letters coming George Myers 70 Froehlich Farm Rd Hicksville NY 11801 M isfi it/Randolph continued page 23 ribs R2 located pin piece scrap 1/16 sheet between trailing edge main spar hold rib R2 up plans 1/16 bot tom sheeting added later will flush Glue first regular rib near center wing place over plan glue plywood webs spar its outboard side webbing makes excellent spacer assures ribs perpendicular spar well Continue adding ribs webs out tip no web between last few tip ribs After ribs place glue top main spar sure good contact webs well ribs Glue plywood web inboard first regular rib installed near center sec tion slide first R2 glue place Glue top front spar place bevel /8 sq trailing edge re ceive top trailing sheet glue place other half wing assem bled same sequence both wing halves have sembled bevel spars leading trailing edges will joined December1978 99 WORLD S LARGEST MASTER MODE S ASS T GIANTS OF ABOUT 5 10 FT SPANS Catalog Sssbsuriplion $8 Art mo IIi0 Order Pan no - numbers osk since ouese beconse n volunteer deriorsernire orgonisutioc orirhour denier supporr seC,rr98 Loek Hudson Bomb $4974Doolinln Gee Beo$4577 Flying Font 0-170$30 58Suyerrrorne 5dB$29102 Flying Forr 8-170$49 62Nousord Ike Boon$2365 M Monsuder 8-26$39 7$RTs Weddeli-Wos$39y 600 6 Comet Onuen$18y 74 yeseo Speulni$35 589970 62 HomMrMulljgunS32 60asu $1 Mosqoiro iSqrr 6321 $36 1$$ 70Onyic Gee-Bee$3965 BW Brd-0ye$29 55Heoth Boby Boiler$23$1 58Morebi M-5 Sen Fm$147$ 62 Corns 90mb P6E $39 107 Morrin MB-i Borrrb 60 Curl 7lrnike A-$$22 M Coudror 0-Ill Ob 015 60$ouglos 0-30 Ok $1561 AEG 019 Booker51$ 71Morrin 8-10 Bomb $205$ Snierson 2A2$15 43Skyrouker XF5F $1682 SleosnOub $19$30 57Curt Gb SG3C-1 $1516 Goriro 019 Booker$49 1100 PLANS AVAILABLE form dihedral angle done sanding block bench radial arm saw After beveling join two halves gether two main braces either side main spars trailing edge brace between top bottom trailing edge sheets Place wing half flat bench raise other wing tip until dihedral braces flush top bottom bath main spars center joint good fit trail mg edge Support wing angle glue dihedral braces Ali phatic resin glue recommended joint Clothes pins useful hold braces alignment glue dries Cut front two R2 ribs t main spar notch glue together center dihedral joint between main spar lead ing edge Add 3/16 balsa gussets side aft part R2s cut /$ aft main spar notch glued either side dihedral joint shown form cutout aileron servo piece scrap 1/16 balsa sheet between forms box Another piece scrap box trailing edge center completes structure sheeting Notice center sheeting between spars sheet bottom wing between R2s form box aileron servo Add 3/16 balsa gussets tip ribs wing ready finish sanding ailerons cut 3/16 balsa sheet sanded shape sanding block cut 1 tip bevel leading edges cut-offs glue wing tip trailing edges raised 1/16 gives washout wing tips Epoxy aileron hardware trailing edge shown original 1/16 ID brass tubing 1/16 wire bent form torque rod horn sure relieve trailing edge its back-up block allow movement aileron horns exit tubing Notch groove ailerons receive torque rods Install just prior covering Stabilizer Fin Rudder tail group built over plans thing re member add spar doublers before solid center section diagonal braces building stabilizer rudder elevator cut 3/16 sheet balsa pinned respective fixed surface final sanding usually apply good shot Hot Stuff location horns movable surface toughen up wood Completion parts sanded well 150 grit sandpaper Round edges fuselage except wing mount leading edges wing stabilizer fin rounded off well trailing edges elevator rudder piece l covered sandpaper excellent tool smooth inside gussets cabin wing tips think finished sand everything again 220 grit sandpaper Balance wing Use piece c wire fulcrum center wing use heaviest aileron side lightest wing panel still doesnt balance add weight light tip main spar can drilled tip accept whatever weight necessary plane should covered plas tic film like MonoKote use form hinges well Start rud der fin Iron 3/8-wide strip over trailing edge fin another strip same size over leading edge rudder strip should lap about / either side edges hinges made ironing 1/16 glue sides two pieces 1 MonoKote together form piece 1 15/16 glue side up half glue side down other half Two make hinge two hinges rudder four ele vator five ailerons hinge rudder fin iron hinge half top bottom side rudder turn over iron other two halves just inboard first ones joint hinge halves should fall right center rudder leading edge Bring rudder fin together crisscross hinges side rudder opposite side fin hold fin rudder position iron hinges fin both sides makes close strong hinge Cover fin rudder normal way hinge line fore aft procedure followed elevator well ailerons ailerons hinged torque rod epoxied aileron same time joined wing hinges will hold alignment until epoxy sets Epoxy tip plates wing after have covered Cut away covering tip plates contact wing tip After fuselage covered glue l wing holddowns Using polyurethane paint match trim paint firewall over lapping MonoKote little seal edges joints Black MonoKote stripped 1/16 wide makes good pin stripes between colors used trim Install engine mount 4-40 X bolts drilled accept engine hole drilled down through back part mount nose gear shown Bend main gear 3/32 music wire shape shown plans install plywood landing gear mount bottom fuselage metal landing gear mounting strips small wood screws screws cut off point does stick through plywood cabin Use epoxy holes fore screwing last time Bend nose gear music wire Instail wheel collar just above coil bear bottom engine mount Solder collar gear Another wheel collar top secures gear Mount steering arm above top collar engage piece 040 music wirefrom rudder servo through inner nyrod top left side fuselage mount servos plywood trays small wood screws trays Hot Stuffed fuselage sides proper place bring CG alignment Install aileron servo wood screws small plywood pads Hot-Stuffed top 3/16 balsa risers front back servo cut-out bottom wing servo should fit far down cut-out possible Hook up ailerons ele vator rudder install engine prop lets go Hying Range check before test flying radio installation different take few extra minutes check make sure ai lerons hooked up correctly CG should just under main spar should no noticeable warps wing tail Set control surfaces neutral ailerons flat bottom wing trim levers middle range Start engine set idle check control movements high low throttle taxi around runway min ute two get feel rudder throttle head wind go Misfit requires guidance Wherever leave will remain air plane called neutral stability As ability will complete slow roll straight up before running out steam loops can big round pattern style little button hooks Inverted flight easy little forward push elevator trim lever knife-edge flight dont use full aileron rudder wont hold Instead use full rudder fly ailerons Snaps spins require full elevator full rudder full aileron aileron can relaxed after spin initiated recovery rapid neu tralized controls Landings gentle since ailerons solid well stall wing tips have no tendency fall off fact Misfit can flown full up 100 Model Aviation elevator just enough throttle remain airborne still answer ailerons good 20 will enhance vertical per formance other worth trouble See later Im going flitting RC Scale Wischers continued page 25 didnt crash takeoff surest way us convince other modelers try hands scale prevent ac cidents being well practiced other planes before attempting flights scale models often heard excuse scale planes hard fly easily damaged crashed no longer valid Scale Wheels avid scale buffs have making own tires complete side-wall lettering number years first saw Toledo DeHavilland Hornet built Dario Bris ighella displayed machined mold ing dies used form tires silicone rubber Woodvale World Champion ships first-place winning Fournier Mick Reeves also hand-made tire its single landing wheel complete legible lettering side walls Mick used silicone rubber rather thick section support weight lettering scale size quite small therefore difficult engrave mold ing die example exten sive effort required world class model effect rule states FAI contest entrant must make declaration items used plane made builder planes wheels tires appear list parts quite often parts purchased FAI Precision Scale possible detail made builder Robart now producing Universal Scale Wheels lettering side walls Hubs molded high strength Lexan Tires low rebound thermoplas tic rubber Continental Deutsches Fabrikat 690 side wingfoot insignia Goodyear Weather 32 X 8 Airplane other side using wheels have found necessary maximum realism remove gloss tire material happens naturally age user may wish hasten process buffing fine sandpaper rubbing very gently cloth moistened dope thinner Robart now furnishes instructions three alternative methods inflating tires withstand load heavier scale models include use dry ice Alka Seltzer pressurizing agents Also described old method refrigerat ing wheel cause contraction air sealing screws loosened screws rapidly tightened trapped air expands room temperature pressurize tire hub discs furnished Robart can modified closely resemble pro totype wheels reworking center disc can removed drill ing filing leave rim new disc plywood styrene plastic epoxied back give depth hub disc Small bits tubing hex screw heads epoxied place ideal use new Hobbypoxy Thixotropic Epoxy Glue stays put applied does run discs painted dull aluminum Floquil resemble wheel castings prototype appearance improvement worthwhile Sport Scale plane detail can seen distance problem have Robart tires flat spot occurs tires model stands position prolonged period solved mak ing balsa stand support plane axles remove load tires flat spot difficult remove model will bounce unrealistically taxiing flats persist Pressurizing helps round out flattened tire Another method suggested Mike Gretz stuff Robart tires firm poly foam preference frequent inflation have also used two sets wheels dis play other flying display tires stuffed balsa discs cut seg ments easy assembly would suitable flying very hard would absorb no landing shock Flap Effectiveness use flaps pro totype airplanes has become common almost model modern plane will likely use seems no agreement between modelers ef fect takeoff landing expe rience no surprise between similar planes effect flaps hard predict until plane flown plane complete disappointment seem have no effect whatever another plane definitely slowed flaps applied Very likely good explanation variation lack aerodynamic knowledge ob scures reason increase lift drag flaps lowered model flying near cruising speed crease lift will cause momentary climb ballooning same time ad ditional drag will slow plane cause steepening glide angle steeper angle modeler attempting spot landing advantage makes point touch-down predictable some planes additional effect increase stability flaps lowered plane seems find groove undisturbed wind conditions Having slowed drag controls become less effective small stick movements have less effect glide path Most advantages flaps fullscale planes small consequence model especially true flaps used takeoff no good reason increase drag models require increase lift except four-engine 120-pound monsters marginal power have seen recently addition flaps actu ating mechanism servo adds large amount weight model could very well nullify benefits derived use trim change flaps lowered could source problems time least appreciated especially true contest judges ask December 1978 101 AM Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST R/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-RAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Mode4 Co Inc US ftte 1& North St Topsfjeld Mass 01983 887-8541 Support AMA Price $3995 kit per dollar bar em all
Edition: Model Aviation - 1978/12
Page Numbers: 18, 19, 20, 21, 22, 23, 99, 100, 101
For four channels 15 engine responsive sport machine fully aerobaticat cost wont blow away allowance U 1 F Randolph ONE OF MY flying buddies claims airplanes flit rather fly true have known fly large fuel-guzzling 40s occa sions like small quick airplanes Misfit same flying buddy also thinks should build stand-off scale models lots guns bombs make lots smoke noise does airplane does look like model air plane no interest Misfit looks like model airplane Misfit quick forgiving airplane addition wing tip plates something goes back free-flight days fore WW II built wash-in both tips make airplane must made snap ailerons remain active well stall sum up Misfit groovy rolling spinning snapping looping knife-edging fun-fly winner will go point what ask ask too much forgive Misfit cheap date too gallon low-nitro fuel will fly 10 hours 40 minutes full bore half throttle will produce well over 15 hours fun same price quick inexpensive build big enough seen reasonable distance yet small enough go flying field piece Kit Make template wing rib old file folder other thin stiff paper use ball-point pen make 18 Model Aviation Ready flight 1 5-powered Misfit conveys feeling competent deaign reenforced study Neil Uptaks sharply drawn plan Tip plates simulated cabin enhance its looks printed sheet two pieces medium hard 1/16 X 3 X 36 balsa Move tem plate around find ribs can cut sheet need 24 After ribs have cut out gang sanded same shape size tem plate take four center stack cut 1/16 top bottom center ribs will receive sheeting mark R2 trailing edge sheeting cut piece 1/16 X 3 X 36 hard balsa Because four inch wide fourth must made splicing three have stripped cut length 221/16 remaining one-inch-wide strips spliced form fourth wing spars stripped sheet 3/16 X 3 X 36 medium hard balsa Cut eight strips 3/16 sq four strips 3/16 3/8 extra 3/16 sq stabilizer rudder spar webbing 1-15/16 1 1/16 16 vertical grain balsa four plywood dihedral braces cut 1/s ply wood landing gear mount stabilizer spar doublers 3/16 strips cut 1/32 plywood used wing tip plates Cut fuselage sides two pieces medium soft 3/32 X 4 X 36 balsa shape shown plan side view lines straight use straight edge Pin two sides together gang sand same outline 1/32 ply doublers cut fit finished sides left right cabin doublers cut 1 / 16 sheet balsa longerons uprights /t sq soft balsa Cut cabin formers /s plywood center cut-outs December1978 19 designer flies aircraft camera typical pass nandy likes planes flit nervous stick tweakers should happy its responsiveness Gallon fuel gives 15 hours Assembled fuselage sides before joining togethernote longe rona notched fit over doublers Its textbook structure aileron servo well formed after wing panels have joined together top center section sheeting completed messy slotting pinning epoxy annoy simple MonoOte hinged rudder takes little time neat Hinges before covering Aileron torque rods installed what has become almost standard arrangement Note aileron grooved receive rod 0 S / 1/8 PLYWOOD DIHEDRAL BRACES 1/4 SPRUCE DRILLED FOR AILERON LINKAGE ADJUSTABLE STEER 1/16 BALSA DECK FORMER BELLCRANK N 1 3/4 SPINNER 15 MAX ENGINE ON TATONE MOUNT 1/2 WHEELS 3 ALIKE-~ 20 Model Aviation SERA TRAY 3/32 BALSA SIDE I/32PLYMOD WALL DOUBLER TO F2 FI TWO PART FIREWALL FROM 1/8 PLYWOOD MIDWEST L G STRAPS SCREW UNDER 1/8 PLY PLATRWI 1 3/16 MUSIC WIRE 1/16 PLYWOOD WEBS 4 BAYS 1/4 DOWEL WING HOLD DOWNS 3/16 SQ BALSA ENTIRE FiN ASSEMBLY 3/16 SQ BALSA ALL STABILIZER FRAMES 1/16 BALSA TOP AND BOTIOM PLANKS NYROD TO RUDDER CONTROL HORN NYROD 10 ELEVAlOR II LI \4fl4 3/16 S4EET BALSA RUDDER TAPE HINGES MIDWEST WNTROL HORNS 3/16 BALSA ELEVATOR II 3i6 BALSA BLOCK 1/32 PLIWOOD REINF 3/32 BALSA SIDE PLANKS ________________________ I/8SQ HARD BALSA ALL FUSELAGE LONGERONS AND BRACES 1/16 TR EDGE PLANKS -TOP AND BOTTOM 3/32 BALSA SPAR WEBBING 12 BAY 1/8 SQ TR EDGE FILLER \l 3/16 BALSA AILERONS 1/16 BALSA DOUBLER AT lop AND BOTUOM BALSA RIBS I/4SQ BALSA LEADING EDGE 3/16 X 3/8 HARD BALSA TOP AND BOTTOM SPARS 3/16SQ HARD BALSA LEADIIG EDGE SliFFENERS 1/32 PLYWOOD liP PLATES December 1978 21 K / 9 ers can used make firewall Cut shape glue together epoxy form firewall Drill firewall engine mounts fuel lines throttle linkage addition 1 / 16 sheet balsa wing center section fuselage top bottom completes kit Fuselage Epoxy 1/32 plywood doublers forward part fuselage sides making sure left right sides plywood doublers side cabin doublers notched fit over ply doubler glued place Longerons notched fit over cabin doublers glued uprights stabi lizer supports added last dry again pin two sides together sand edges true square Place side over side view plans mark location cabin formers side still flat plan glue cabin formers loca tions using square right triangle keep square fuselage side certain formers belong front front etc glue has set glue other side top formers using square make sure edges both sides square other front back top bottom dry place bottom fuselage flat work surface over top view plan Bring nose sides firewall epoxy place hold ing clamps string rubber bands whatever works Bring tail together beveling fit glueing being sure stabilizer cut-outs parallel work surface Locate position landing gear mount notch bottom fuselage sides 1/16 sheeting added landing gear mount wont stick up above Glue mount sheet bottom 1 / 16 balsa cross grain Cut exit holes outer nyrod install rods using epoxy exit fuselage side add bulkheads aft fuselage shown hold place Epoxy brass tube fuel over flow lines through firewall T nuts engine mount back Install fuel tank using foam bottom sides wedge tank position 3/16 balsa bulkhead hind Attach fuel overflow lines Use inner nyrod bring throttle through firewall cabin epoxy firewall Sheet fuse lage 1/16 firewall LI P%X OONON&L SOOO CO OMOMOOr 80*00 Crooo- 22 Model Aviation servo place aileron linkage hooked upall ready fly nree nooysnop strap iittings noia main gear plywood floor L7iTVXtvmi1HOOTS 0 0800 OOON00N0N j0T Strip ailerons one-piece elevator minimize fussing Red yellow color scheme eye-catching forward cabin former Cut hole sheeting inner nyrod nose gear steering shown Use epoxy microballoons install nyrod making sure extends well cabin Com plete top sheeting install cabin gussets fuselage ready finalto pin bottom trailing edge sandingsheeting place Glue piece /s sq back edge sheeting Using rib Wing Cover plans backingas gauge pin bottom main spar MonoKote film clean-plans center both wing panels ers bag keep structure stickingContinued page 99 I- Y ir' rT 1 L11 IL1[L t YflLSO.AJSNn ONN KJ 0454 4 * u moo. 00400kSO&NA 40 WOM 0601040 7*00oo.oOrt LmJ LrL_1 ____----5 STRAP~0046400 S&TION N-N December1978 23 Servo installation showing nosewheel throttle pushrods brought Randy seems have custom-tinkered servo arms Kratt 4-Ounce tank wedged piece foamneat installation II/ HI 1 / 0 N w 4 0 w w 0 w -J 4 -J 4 z 4 -J w N -J -J U Ace RIC proud announce new member family servos popular Digital Commander line radio equipment kits Bantam Midget brother Bantam servo has respected name servos years Bantam Midget considerably smaller lighter boasts same torque gear strength its big brother bit speed Notice extremely low profile--important interfacing elevator rudder servos aileron servo linkages Reread above paragraph consider fact Midget offers servo micro-miniature category also has power strength 60 powered pattern ships Truly universal servo Signetics 544 IC external driver transistors quality plastic conductive element pot other components make combination has become synonymous Ace R/C Digital Commander servos Servos have Competition Grade performance economical price tag Bantam Midget will work modern positive pulse system negative pulse systems ProLine etc pulse inverter 14G18--$2 required servo rotary wheel extended arm adjustable arm furnished No connectors furnished servo kits flite packs complete systems available Midget option please write details Bwnt4 /Wc44t Size Height--1125 Length--143 Width--O7 Weight 85 oz 24 grams Thrust 20 oz Transit Time Under 5 sec 900 BREAKTHROUGH IN SERVOS 14G20R--Bantam Midget Kit $2395 14G2ORC--Bantam Midget Assembled $2895 AG Please send yeur complete talog Enclased Si 00 refunded myNAME first order Add 550 far 1st clans mailADDRESS return add $100 handling oa ether dencur idea glide angle also re sponse rate elevator will valu able event have un expected engine flame-out Dead-stick landings easy wing full holes essentially case formation plane thing four-ounce tank well ahead CG Blue Birds get bit tailheavy fly tank dry No problem ready trim change avoid usually flying about two ounces worth Youll probably cuss times try figure out some less obvious construction features go ahead Persevere Youll hit show Blue Birds RC Technique/Myers continued page 17 engine Discussed above 4 Plan landing before take off obvious have wonder landings maneuver nearly everyone does poorly can see jaw muscles tighten eyes go squinty engine stops unexpectedly flight Now get out seems first thought heads Sure aware air plane accidents happen vicinity runway thats no reason panic glider easier land powered STATE zrROX 511E HIGGINSVILLE MO plane another aphorisms gives student confidence can land safely Concentrate keeping wings level simple instruction foremost mind students make good landings being aware fact plane has stopped moving Spot landings another matter like learning shoot gun first thing get shots part target Once happens its quite easy move group over Bullseye CORRECTIONS September issue Wing Sax trans portation bags GBS Enterprises re ferred Wind Sox regret error October issue page 60 center photo Keith Clodfelter erroneously identified James Duckworth November issue Wildcat RC scale model described article subhead requiring Pee Wee 02 although text plan cutaway drawing said TD TD theres world difference November issue Nats RC Pattern re port references Tony Bonetti tended mean flying skill better ever apologies Tony anyone else may have felt something else meant Tony has enviable track record Pattern competitOns Thats enough month Keep letters coming George Myers 70 Froehlich Farm Rd Hicksville NY 11801 M isfi it/Randolph continued page 23 ribs R2 located pin piece scrap 1/16 sheet between trailing edge main spar hold rib R2 up plans 1/16 bot tom sheeting added later will flush Glue first regular rib near center wing place over plan glue plywood webs spar its outboard side webbing makes excellent spacer assures ribs perpendicular spar well Continue adding ribs webs out tip no web between last few tip ribs After ribs place glue top main spar sure good contact webs well ribs Glue plywood web inboard first regular rib installed near center sec tion slide first R2 glue place Glue top front spar place bevel /8 sq trailing edge re ceive top trailing sheet glue place other half wing assem bled same sequence both wing halves have sembled bevel spars leading trailing edges will joined December1978 99 WORLD S LARGEST MASTER MODE S ASS T GIANTS OF ABOUT 5 10 FT SPANS Catalog Sssbsuriplion $8 Art mo IIi0 Order Pan no - numbers osk since ouese beconse n volunteer deriorsernire orgonisutioc orirhour denier supporr seC,rr98 Loek Hudson Bomb $4974Doolinln Gee Beo$4577 Flying Font 0-170$30 58Suyerrrorne 5dB$29102 Flying Forr 8-170$49 62Nousord Ike Boon$2365 M Monsuder 8-26$39 7$RTs Weddeli-Wos$39y 600 6 Comet Onuen$18y 74 yeseo Speulni$35 589970 62 HomMrMulljgunS32 60asu $1 Mosqoiro iSqrr 6321 $36 1$$ 70Onyic Gee-Bee$3965 BW Brd-0ye$29 55Heoth Boby Boiler$23$1 58Morebi M-5 Sen Fm$147$ 62 Corns 90mb P6E $39 107 Morrin MB-i Borrrb 60 Curl 7lrnike A-$$22 M Coudror 0-Ill Ob 015 60$ouglos 0-30 Ok $1561 AEG 019 Booker51$ 71Morrin 8-10 Bomb $205$ Snierson 2A2$15 43Skyrouker XF5F $1682 SleosnOub $19$30 57Curt Gb SG3C-1 $1516 Goriro 019 Booker$49 1100 PLANS AVAILABLE form dihedral angle done sanding block bench radial arm saw After beveling join two halves gether two main braces either side main spars trailing edge brace between top bottom trailing edge sheets Place wing half flat bench raise other wing tip until dihedral braces flush top bottom bath main spars center joint good fit trail mg edge Support wing angle glue dihedral braces Ali phatic resin glue recommended joint Clothes pins useful hold braces alignment glue dries Cut front two R2 ribs t main spar notch glue together center dihedral joint between main spar lead ing edge Add 3/16 balsa gussets side aft part R2s cut /$ aft main spar notch glued either side dihedral joint shown form cutout aileron servo piece scrap 1/16 balsa sheet between forms box Another piece scrap box trailing edge center completes structure sheeting Notice center sheeting between spars sheet bottom wing between R2s form box aileron servo Add 3/16 balsa gussets tip ribs wing ready finish sanding ailerons cut 3/16 balsa sheet sanded shape sanding block cut 1 tip bevel leading edges cut-offs glue wing tip trailing edges raised 1/16 gives washout wing tips Epoxy aileron hardware trailing edge shown original 1/16 ID brass tubing 1/16 wire bent form torque rod horn sure relieve trailing edge its back-up block allow movement aileron horns exit tubing Notch groove ailerons receive torque rods Install just prior covering Stabilizer Fin Rudder tail group built over plans thing re member add spar doublers before solid center section diagonal braces building stabilizer rudder elevator cut 3/16 sheet balsa pinned respective fixed surface final sanding usually apply good shot Hot Stuff location horns movable surface toughen up wood Completion parts sanded well 150 grit sandpaper Round edges fuselage except wing mount leading edges wing stabilizer fin rounded off well trailing edges elevator rudder piece l covered sandpaper excellent tool smooth inside gussets cabin wing tips think finished sand everything again 220 grit sandpaper Balance wing Use piece c wire fulcrum center wing use heaviest aileron side lightest wing panel still doesnt balance add weight light tip main spar can drilled tip accept whatever weight necessary plane should covered plas tic film like MonoKote use form hinges well Start rud der fin Iron 3/8-wide strip over trailing edge fin another strip same size over leading edge rudder strip should lap about / either side edges hinges made ironing 1/16 glue sides two pieces 1 MonoKote together form piece 1 15/16 glue side up half glue side down other half Two make hinge two hinges rudder four ele vator five ailerons hinge rudder fin iron hinge half top bottom side rudder turn over iron other two halves just inboard first ones joint hinge halves should fall right center rudder leading edge Bring rudder fin together crisscross hinges side rudder opposite side fin hold fin rudder position iron hinges fin both sides makes close strong hinge Cover fin rudder normal way hinge line fore aft procedure followed elevator well ailerons ailerons hinged torque rod epoxied aileron same time joined wing hinges will hold alignment until epoxy sets Epoxy tip plates wing after have covered Cut away covering tip plates contact wing tip After fuselage covered glue l wing holddowns Using polyurethane paint match trim paint firewall over lapping MonoKote little seal edges joints Black MonoKote stripped 1/16 wide makes good pin stripes between colors used trim Install engine mount 4-40 X bolts drilled accept engine hole drilled down through back part mount nose gear shown Bend main gear 3/32 music wire shape shown plans install plywood landing gear mount bottom fuselage metal landing gear mounting strips small wood screws screws cut off point does stick through plywood cabin Use epoxy holes fore screwing last time Bend nose gear music wire Instail wheel collar just above coil bear bottom engine mount Solder collar gear Another wheel collar top secures gear Mount steering arm above top collar engage piece 040 music wirefrom rudder servo through inner nyrod top left side fuselage mount servos plywood trays small wood screws trays Hot Stuffed fuselage sides proper place bring CG alignment Install aileron servo wood screws small plywood pads Hot-Stuffed top 3/16 balsa risers front back servo cut-out bottom wing servo should fit far down cut-out possible Hook up ailerons ele vator rudder install engine prop lets go Hying Range check before test flying radio installation different take few extra minutes check make sure ai lerons hooked up correctly CG should just under main spar should no noticeable warps wing tail Set control surfaces neutral ailerons flat bottom wing trim levers middle range Start engine set idle check control movements high low throttle taxi around runway min ute two get feel rudder throttle head wind go Misfit requires guidance Wherever leave will remain air plane called neutral stability As ability will complete slow roll straight up before running out steam loops can big round pattern style little button hooks Inverted flight easy little forward push elevator trim lever knife-edge flight dont use full aileron rudder wont hold Instead use full rudder fly ailerons Snaps spins require full elevator full rudder full aileron aileron can relaxed after spin initiated recovery rapid neu tralized controls Landings gentle since ailerons solid well stall wing tips have no tendency fall off fact Misfit can flown full up 100 Model Aviation elevator just enough throttle remain airborne still answer ailerons good 20 will enhance vertical per formance other worth trouble See later Im going flitting RC Scale Wischers continued page 25 didnt crash takeoff surest way us convince other modelers try hands scale prevent ac cidents being well practiced other planes before attempting flights scale models often heard excuse scale planes hard fly easily damaged crashed no longer valid Scale Wheels avid scale buffs have making own tires complete side-wall lettering number years first saw Toledo DeHavilland Hornet built Dario Bris ighella displayed machined mold ing dies used form tires silicone rubber Woodvale World Champion ships first-place winning Fournier Mick Reeves also hand-made tire its single landing wheel complete legible lettering side walls Mick used silicone rubber rather thick section support weight lettering scale size quite small therefore difficult engrave mold ing die example exten sive effort required world class model effect rule states FAI contest entrant must make declaration items used plane made builder planes wheels tires appear list parts quite often parts purchased FAI Precision Scale possible detail made builder Robart now producing Universal Scale Wheels lettering side walls Hubs molded high strength Lexan Tires low rebound thermoplas tic rubber Continental Deutsches Fabrikat 690 side wingfoot insignia Goodyear Weather 32 X 8 Airplane other side using wheels have found necessary maximum realism remove gloss tire material happens naturally age user may wish hasten process buffing fine sandpaper rubbing very gently cloth moistened dope thinner Robart now furnishes instructions three alternative methods inflating tires withstand load heavier scale models include use dry ice Alka Seltzer pressurizing agents Also described old method refrigerat ing wheel cause contraction air sealing screws loosened screws rapidly tightened trapped air expands room temperature pressurize tire hub discs furnished Robart can modified closely resemble pro totype wheels reworking center disc can removed drill ing filing leave rim new disc plywood styrene plastic epoxied back give depth hub disc Small bits tubing hex screw heads epoxied place ideal use new Hobbypoxy Thixotropic Epoxy Glue stays put applied does run discs painted dull aluminum Floquil resemble wheel castings prototype appearance improvement worthwhile Sport Scale plane detail can seen distance problem have Robart tires flat spot occurs tires model stands position prolonged period solved mak ing balsa stand support plane axles remove load tires flat spot difficult remove model will bounce unrealistically taxiing flats persist Pressurizing helps round out flattened tire Another method suggested Mike Gretz stuff Robart tires firm poly foam preference frequent inflation have also used two sets wheels dis play other flying display tires stuffed balsa discs cut seg ments easy assembly would suitable flying very hard would absorb no landing shock Flap Effectiveness use flaps pro totype airplanes has become common almost model modern plane will likely use seems no agreement between modelers ef fect takeoff landing expe rience no surprise between similar planes effect flaps hard predict until plane flown plane complete disappointment seem have no effect whatever another plane definitely slowed flaps applied Very likely good explanation variation lack aerodynamic knowledge ob scures reason increase lift drag flaps lowered model flying near cruising speed crease lift will cause momentary climb ballooning same time ad ditional drag will slow plane cause steepening glide angle steeper angle modeler attempting spot landing advantage makes point touch-down predictable some planes additional effect increase stability flaps lowered plane seems find groove undisturbed wind conditions Having slowed drag controls become less effective small stick movements have less effect glide path Most advantages flaps fullscale planes small consequence model especially true flaps used takeoff no good reason increase drag models require increase lift except four-engine 120-pound monsters marginal power have seen recently addition flaps actu ating mechanism servo adds large amount weight model could very well nullify benefits derived use trim change flaps lowered could source problems time least appreciated especially true contest judges ask December 1978 101 AM Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST R/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-RAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Mode4 Co Inc US ftte 1& North St Topsfjeld Mass 01983 887-8541 Support AMA Price $3995 kit per dollar bar em all
Edition: Model Aviation - 1978/12
Page Numbers: 18, 19, 20, 21, 22, 23, 99, 100, 101
For four channels 15 engine responsive sport machine fully aerobaticat cost wont blow away allowance U 1 F Randolph ONE OF MY flying buddies claims airplanes flit rather fly true have known fly large fuel-guzzling 40s occa sions like small quick airplanes Misfit same flying buddy also thinks should build stand-off scale models lots guns bombs make lots smoke noise does airplane does look like model air plane no interest Misfit looks like model airplane Misfit quick forgiving airplane addition wing tip plates something goes back free-flight days fore WW II built wash-in both tips make airplane must made snap ailerons remain active well stall sum up Misfit groovy rolling spinning snapping looping knife-edging fun-fly winner will go point what ask ask too much forgive Misfit cheap date too gallon low-nitro fuel will fly 10 hours 40 minutes full bore half throttle will produce well over 15 hours fun same price quick inexpensive build big enough seen reasonable distance yet small enough go flying field piece Kit Make template wing rib old file folder other thin stiff paper use ball-point pen make 18 Model Aviation Ready flight 1 5-powered Misfit conveys feeling competent deaign reenforced study Neil Uptaks sharply drawn plan Tip plates simulated cabin enhance its looks printed sheet two pieces medium hard 1/16 X 3 X 36 balsa Move tem plate around find ribs can cut sheet need 24 After ribs have cut out gang sanded same shape size tem plate take four center stack cut 1/16 top bottom center ribs will receive sheeting mark R2 trailing edge sheeting cut piece 1/16 X 3 X 36 hard balsa Because four inch wide fourth must made splicing three have stripped cut length 221/16 remaining one-inch-wide strips spliced form fourth wing spars stripped sheet 3/16 X 3 X 36 medium hard balsa Cut eight strips 3/16 sq four strips 3/16 3/8 extra 3/16 sq stabilizer rudder spar webbing 1-15/16 1 1/16 16 vertical grain balsa four plywood dihedral braces cut 1/s ply wood landing gear mount stabilizer spar doublers 3/16 strips cut 1/32 plywood used wing tip plates Cut fuselage sides two pieces medium soft 3/32 X 4 X 36 balsa shape shown plan side view lines straight use straight edge Pin two sides together gang sand same outline 1/32 ply doublers cut fit finished sides left right cabin doublers cut 1 / 16 sheet balsa longerons uprights /t sq soft balsa Cut cabin formers /s plywood center cut-outs December1978 19 designer flies aircraft camera typical pass nandy likes planes flit nervous stick tweakers should happy its responsiveness Gallon fuel gives 15 hours Assembled fuselage sides before joining togethernote longe rona notched fit over doublers Its textbook structure aileron servo well formed after wing panels have joined together top center section sheeting completed messy slotting pinning epoxy annoy simple MonoOte hinged rudder takes little time neat Hinges before covering Aileron torque rods installed what has become almost standard arrangement Note aileron grooved receive rod 0 S / 1/8 PLYWOOD DIHEDRAL BRACES 1/4 SPRUCE DRILLED FOR AILERON LINKAGE ADJUSTABLE STEER 1/16 BALSA DECK FORMER BELLCRANK N 1 3/4 SPINNER 15 MAX ENGINE ON TATONE MOUNT 1/2 WHEELS 3 ALIKE-~ 20 Model Aviation SERA TRAY 3/32 BALSA SIDE I/32PLYMOD WALL DOUBLER TO F2 FI TWO PART FIREWALL FROM 1/8 PLYWOOD MIDWEST L G STRAPS SCREW UNDER 1/8 PLY PLATRWI 1 3/16 MUSIC WIRE 1/16 PLYWOOD WEBS 4 BAYS 1/4 DOWEL WING HOLD DOWNS 3/16 SQ BALSA ENTIRE FiN ASSEMBLY 3/16 SQ BALSA ALL STABILIZER FRAMES 1/16 BALSA TOP AND BOTIOM PLANKS NYROD TO RUDDER CONTROL HORN NYROD 10 ELEVAlOR II LI \4fl4 3/16 S4EET BALSA RUDDER TAPE HINGES MIDWEST WNTROL HORNS 3/16 BALSA ELEVATOR II 3i6 BALSA BLOCK 1/32 PLIWOOD REINF 3/32 BALSA SIDE PLANKS ________________________ I/8SQ HARD BALSA ALL FUSELAGE LONGERONS AND BRACES 1/16 TR EDGE PLANKS -TOP AND BOTTOM 3/32 BALSA SPAR WEBBING 12 BAY 1/8 SQ TR EDGE FILLER \l 3/16 BALSA AILERONS 1/16 BALSA DOUBLER AT lop AND BOTUOM BALSA RIBS I/4SQ BALSA LEADING EDGE 3/16 X 3/8 HARD BALSA TOP AND BOTTOM SPARS 3/16SQ HARD BALSA LEADIIG EDGE SliFFENERS 1/32 PLYWOOD liP PLATES December 1978 21 K / 9 ers can used make firewall Cut shape glue together epoxy form firewall Drill firewall engine mounts fuel lines throttle linkage addition 1 / 16 sheet balsa wing center section fuselage top bottom completes kit Fuselage Epoxy 1/32 plywood doublers forward part fuselage sides making sure left right sides plywood doublers side cabin doublers notched fit over ply doubler glued place Longerons notched fit over cabin doublers glued uprights stabi lizer supports added last dry again pin two sides together sand edges true square Place side over side view plans mark location cabin formers side still flat plan glue cabin formers loca tions using square right triangle keep square fuselage side certain formers belong front front etc glue has set glue other side top formers using square make sure edges both sides square other front back top bottom dry place bottom fuselage flat work surface over top view plan Bring nose sides firewall epoxy place hold ing clamps string rubber bands whatever works Bring tail together beveling fit glueing being sure stabilizer cut-outs parallel work surface Locate position landing gear mount notch bottom fuselage sides 1/16 sheeting added landing gear mount wont stick up above Glue mount sheet bottom 1 / 16 balsa cross grain Cut exit holes outer nyrod install rods using epoxy exit fuselage side add bulkheads aft fuselage shown hold place Epoxy brass tube fuel over flow lines through firewall T nuts engine mount back Install fuel tank using foam bottom sides wedge tank position 3/16 balsa bulkhead hind Attach fuel overflow lines Use inner nyrod bring throttle through firewall cabin epoxy firewall Sheet fuse lage 1/16 firewall LI P%X OONON&L SOOO CO OMOMOOr 80*00 Crooo- 22 Model Aviation servo place aileron linkage hooked upall ready fly nree nooysnop strap iittings noia main gear plywood floor L7iTVXtvmi1HOOTS 0 0800 OOON00N0N j0T Strip ailerons one-piece elevator minimize fussing Red yellow color scheme eye-catching forward cabin former Cut hole sheeting inner nyrod nose gear steering shown Use epoxy microballoons install nyrod making sure extends well cabin Com plete top sheeting install cabin gussets fuselage ready finalto pin bottom trailing edge sandingsheeting place Glue piece /s sq back edge sheeting Using rib Wing Cover plans backingas gauge pin bottom main spar MonoKote film clean-plans center both wing panels ers bag keep structure stickingContinued page 99 I- Y ir' rT 1 L11 IL1[L t YflLSO.AJSNn ONN KJ 0454 4 * u moo. 00400kSO&NA 40 WOM 0601040 7*00oo.oOrt LmJ LrL_1 ____----5 STRAP~0046400 S&TION N-N December1978 23 Servo installation showing nosewheel throttle pushrods brought Randy seems have custom-tinkered servo arms Kratt 4-Ounce tank wedged piece foamneat installation II/ HI 1 / 0 N w 4 0 w w 0 w -J 4 -J 4 z 4 -J w N -J -J U Ace RIC proud announce new member family servos popular Digital Commander line radio equipment kits Bantam Midget brother Bantam servo has respected name servos years Bantam Midget considerably smaller lighter boasts same torque gear strength its big brother bit speed Notice extremely low profile--important interfacing elevator rudder servos aileron servo linkages Reread above paragraph consider fact Midget offers servo micro-miniature category also has power strength 60 powered pattern ships Truly universal servo Signetics 544 IC external driver transistors quality plastic conductive element pot other components make combination has become synonymous Ace R/C Digital Commander servos Servos have Competition Grade performance economical price tag Bantam Midget will work modern positive pulse system negative pulse systems ProLine etc pulse inverter 14G18--$2 required servo rotary wheel extended arm adjustable arm furnished No connectors furnished servo kits flite packs complete systems available Midget option please write details Bwnt4 /Wc44t Size Height--1125 Length--143 Width--O7 Weight 85 oz 24 grams Thrust 20 oz Transit Time Under 5 sec 900 BREAKTHROUGH IN SERVOS 14G20R--Bantam Midget Kit $2395 14G2ORC--Bantam Midget Assembled $2895 AG Please send yeur complete talog Enclased Si 00 refunded myNAME first order Add 550 far 1st clans mailADDRESS return add $100 handling oa ether dencur idea glide angle also re sponse rate elevator will valu able event have un expected engine flame-out Dead-stick landings easy wing full holes essentially case formation plane thing four-ounce tank well ahead CG Blue Birds get bit tailheavy fly tank dry No problem ready trim change avoid usually flying about two ounces worth Youll probably cuss times try figure out some less obvious construction features go ahead Persevere Youll hit show Blue Birds RC Technique/Myers continued page 17 engine Discussed above 4 Plan landing before take off obvious have wonder landings maneuver nearly everyone does poorly can see jaw muscles tighten eyes go squinty engine stops unexpectedly flight Now get out seems first thought heads Sure aware air plane accidents happen vicinity runway thats no reason panic glider easier land powered STATE zrROX 511E HIGGINSVILLE MO plane another aphorisms gives student confidence can land safely Concentrate keeping wings level simple instruction foremost mind students make good landings being aware fact plane has stopped moving Spot landings another matter like learning shoot gun first thing get shots part target Once happens its quite easy move group over Bullseye CORRECTIONS September issue Wing Sax trans portation bags GBS Enterprises re ferred Wind Sox regret error October issue page 60 center photo Keith Clodfelter erroneously identified James Duckworth November issue Wildcat RC scale model described article subhead requiring Pee Wee 02 although text plan cutaway drawing said TD TD theres world difference November issue Nats RC Pattern re port references Tony Bonetti tended mean flying skill better ever apologies Tony anyone else may have felt something else meant Tony has enviable track record Pattern competitOns Thats enough month Keep letters coming George Myers 70 Froehlich Farm Rd Hicksville NY 11801 M isfi it/Randolph continued page 23 ribs R2 located pin piece scrap 1/16 sheet between trailing edge main spar hold rib R2 up plans 1/16 bot tom sheeting added later will flush Glue first regular rib near center wing place over plan glue plywood webs spar its outboard side webbing makes excellent spacer assures ribs perpendicular spar well Continue adding ribs webs out tip no web between last few tip ribs After ribs place glue top main spar sure good contact webs well ribs Glue plywood web inboard first regular rib installed near center sec tion slide first R2 glue place Glue top front spar place bevel /8 sq trailing edge re ceive top trailing sheet glue place other half wing assem bled same sequence both wing halves have sembled bevel spars leading trailing edges will joined December1978 99 WORLD S LARGEST MASTER MODE S ASS T GIANTS OF ABOUT 5 10 FT SPANS Catalog Sssbsuriplion $8 Art mo IIi0 Order Pan no - numbers osk since ouese beconse n volunteer deriorsernire orgonisutioc orirhour denier supporr seC,rr98 Loek Hudson Bomb $4974Doolinln Gee Beo$4577 Flying Font 0-170$30 58Suyerrrorne 5dB$29102 Flying Forr 8-170$49 62Nousord Ike Boon$2365 M Monsuder 8-26$39 7$RTs Weddeli-Wos$39y 600 6 Comet Onuen$18y 74 yeseo Speulni$35 589970 62 HomMrMulljgunS32 60asu $1 Mosqoiro iSqrr 6321 $36 1$$ 70Onyic Gee-Bee$3965 BW Brd-0ye$29 55Heoth Boby Boiler$23$1 58Morebi M-5 Sen Fm$147$ 62 Corns 90mb P6E $39 107 Morrin MB-i Borrrb 60 Curl 7lrnike A-$$22 M Coudror 0-Ill Ob 015 60$ouglos 0-30 Ok $1561 AEG 019 Booker51$ 71Morrin 8-10 Bomb $205$ Snierson 2A2$15 43Skyrouker XF5F $1682 SleosnOub $19$30 57Curt Gb SG3C-1 $1516 Goriro 019 Booker$49 1100 PLANS AVAILABLE form dihedral angle done sanding block bench radial arm saw After beveling join two halves gether two main braces either side main spars trailing edge brace between top bottom trailing edge sheets Place wing half flat bench raise other wing tip until dihedral braces flush top bottom bath main spars center joint good fit trail mg edge Support wing angle glue dihedral braces Ali phatic resin glue recommended joint Clothes pins useful hold braces alignment glue dries Cut front two R2 ribs t main spar notch glue together center dihedral joint between main spar lead ing edge Add 3/16 balsa gussets side aft part R2s cut /$ aft main spar notch glued either side dihedral joint shown form cutout aileron servo piece scrap 1/16 balsa sheet between forms box Another piece scrap box trailing edge center completes structure sheeting Notice center sheeting between spars sheet bottom wing between R2s form box aileron servo Add 3/16 balsa gussets tip ribs wing ready finish sanding ailerons cut 3/16 balsa sheet sanded shape sanding block cut 1 tip bevel leading edges cut-offs glue wing tip trailing edges raised 1/16 gives washout wing tips Epoxy aileron hardware trailing edge shown original 1/16 ID brass tubing 1/16 wire bent form torque rod horn sure relieve trailing edge its back-up block allow movement aileron horns exit tubing Notch groove ailerons receive torque rods Install just prior covering Stabilizer Fin Rudder tail group built over plans thing re member add spar doublers before solid center section diagonal braces building stabilizer rudder elevator cut 3/16 sheet balsa pinned respective fixed surface final sanding usually apply good shot Hot Stuff location horns movable surface toughen up wood Completion parts sanded well 150 grit sandpaper Round edges fuselage except wing mount leading edges wing stabilizer fin rounded off well trailing edges elevator rudder piece l covered sandpaper excellent tool smooth inside gussets cabin wing tips think finished sand everything again 220 grit sandpaper Balance wing Use piece c wire fulcrum center wing use heaviest aileron side lightest wing panel still doesnt balance add weight light tip main spar can drilled tip accept whatever weight necessary plane should covered plas tic film like MonoKote use form hinges well Start rud der fin Iron 3/8-wide strip over trailing edge fin another strip same size over leading edge rudder strip should lap about / either side edges hinges made ironing 1/16 glue sides two pieces 1 MonoKote together form piece 1 15/16 glue side up half glue side down other half Two make hinge two hinges rudder four ele vator five ailerons hinge rudder fin iron hinge half top bottom side rudder turn over iron other two halves just inboard first ones joint hinge halves should fall right center rudder leading edge Bring rudder fin together crisscross hinges side rudder opposite side fin hold fin rudder position iron hinges fin both sides makes close strong hinge Cover fin rudder normal way hinge line fore aft procedure followed elevator well ailerons ailerons hinged torque rod epoxied aileron same time joined wing hinges will hold alignment until epoxy sets Epoxy tip plates wing after have covered Cut away covering tip plates contact wing tip After fuselage covered glue l wing holddowns Using polyurethane paint match trim paint firewall over lapping MonoKote little seal edges joints Black MonoKote stripped 1/16 wide makes good pin stripes between colors used trim Install engine mount 4-40 X bolts drilled accept engine hole drilled down through back part mount nose gear shown Bend main gear 3/32 music wire shape shown plans install plywood landing gear mount bottom fuselage metal landing gear mounting strips small wood screws screws cut off point does stick through plywood cabin Use epoxy holes fore screwing last time Bend nose gear music wire Instail wheel collar just above coil bear bottom engine mount Solder collar gear Another wheel collar top secures gear Mount steering arm above top collar engage piece 040 music wirefrom rudder servo through inner nyrod top left side fuselage mount servos plywood trays small wood screws trays Hot Stuffed fuselage sides proper place bring CG alignment Install aileron servo wood screws small plywood pads Hot-Stuffed top 3/16 balsa risers front back servo cut-out bottom wing servo should fit far down cut-out possible Hook up ailerons ele vator rudder install engine prop lets go Hying Range check before test flying radio installation different take few extra minutes check make sure ai lerons hooked up correctly CG should just under main spar should no noticeable warps wing tail Set control surfaces neutral ailerons flat bottom wing trim levers middle range Start engine set idle check control movements high low throttle taxi around runway min ute two get feel rudder throttle head wind go Misfit requires guidance Wherever leave will remain air plane called neutral stability As ability will complete slow roll straight up before running out steam loops can big round pattern style little button hooks Inverted flight easy little forward push elevator trim lever knife-edge flight dont use full aileron rudder wont hold Instead use full rudder fly ailerons Snaps spins require full elevator full rudder full aileron aileron can relaxed after spin initiated recovery rapid neu tralized controls Landings gentle since ailerons solid well stall wing tips have no tendency fall off fact Misfit can flown full up 100 Model Aviation elevator just enough throttle remain airborne still answer ailerons good 20 will enhance vertical per formance other worth trouble See later Im going flitting RC Scale Wischers continued page 25 didnt crash takeoff surest way us convince other modelers try hands scale prevent ac cidents being well practiced other planes before attempting flights scale models often heard excuse scale planes hard fly easily damaged crashed no longer valid Scale Wheels avid scale buffs have making own tires complete side-wall lettering number years first saw Toledo DeHavilland Hornet built Dario Bris ighella displayed machined mold ing dies used form tires silicone rubber Woodvale World Champion ships first-place winning Fournier Mick Reeves also hand-made tire its single landing wheel complete legible lettering side walls Mick used silicone rubber rather thick section support weight lettering scale size quite small therefore difficult engrave mold ing die example exten sive effort required world class model effect rule states FAI contest entrant must make declaration items used plane made builder planes wheels tires appear list parts quite often parts purchased FAI Precision Scale possible detail made builder Robart now producing Universal Scale Wheels lettering side walls Hubs molded high strength Lexan Tires low rebound thermoplas tic rubber Continental Deutsches Fabrikat 690 side wingfoot insignia Goodyear Weather 32 X 8 Airplane other side using wheels have found necessary maximum realism remove gloss tire material happens naturally age user may wish hasten process buffing fine sandpaper rubbing very gently cloth moistened dope thinner Robart now furnishes instructions three alternative methods inflating tires withstand load heavier scale models include use dry ice Alka Seltzer pressurizing agents Also described old method refrigerat ing wheel cause contraction air sealing screws loosened screws rapidly tightened trapped air expands room temperature pressurize tire hub discs furnished Robart can modified closely resemble pro totype wheels reworking center disc can removed drill ing filing leave rim new disc plywood styrene plastic epoxied back give depth hub disc Small bits tubing hex screw heads epoxied place ideal use new Hobbypoxy Thixotropic Epoxy Glue stays put applied does run discs painted dull aluminum Floquil resemble wheel castings prototype appearance improvement worthwhile Sport Scale plane detail can seen distance problem have Robart tires flat spot occurs tires model stands position prolonged period solved mak ing balsa stand support plane axles remove load tires flat spot difficult remove model will bounce unrealistically taxiing flats persist Pressurizing helps round out flattened tire Another method suggested Mike Gretz stuff Robart tires firm poly foam preference frequent inflation have also used two sets wheels dis play other flying display tires stuffed balsa discs cut seg ments easy assembly would suitable flying very hard would absorb no landing shock Flap Effectiveness use flaps pro totype airplanes has become common almost model modern plane will likely use seems no agreement between modelers ef fect takeoff landing expe rience no surprise between similar planes effect flaps hard predict until plane flown plane complete disappointment seem have no effect whatever another plane definitely slowed flaps applied Very likely good explanation variation lack aerodynamic knowledge ob scures reason increase lift drag flaps lowered model flying near cruising speed crease lift will cause momentary climb ballooning same time ad ditional drag will slow plane cause steepening glide angle steeper angle modeler attempting spot landing advantage makes point touch-down predictable some planes additional effect increase stability flaps lowered plane seems find groove undisturbed wind conditions Having slowed drag controls become less effective small stick movements have less effect glide path Most advantages flaps fullscale planes small consequence model especially true flaps used takeoff no good reason increase drag models require increase lift except four-engine 120-pound monsters marginal power have seen recently addition flaps actu ating mechanism servo adds large amount weight model could very well nullify benefits derived use trim change flaps lowered could source problems time least appreciated especially true contest judges ask December 1978 101 AM Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST R/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-RAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Mode4 Co Inc US ftte 1& North St Topsfjeld Mass 01983 887-8541 Support AMA Price $3995 kit per dollar bar em all
Edition: Model Aviation - 1978/12
Page Numbers: 18, 19, 20, 21, 22, 23, 99, 100, 101
For four channels 15 engine responsive sport machine fully aerobaticat cost wont blow away allowance U 1 F Randolph ONE OF MY flying buddies claims airplanes flit rather fly true have known fly large fuel-guzzling 40s occa sions like small quick airplanes Misfit same flying buddy also thinks should build stand-off scale models lots guns bombs make lots smoke noise does airplane does look like model air plane no interest Misfit looks like model airplane Misfit quick forgiving airplane addition wing tip plates something goes back free-flight days fore WW II built wash-in both tips make airplane must made snap ailerons remain active well stall sum up Misfit groovy rolling spinning snapping looping knife-edging fun-fly winner will go point what ask ask too much forgive Misfit cheap date too gallon low-nitro fuel will fly 10 hours 40 minutes full bore half throttle will produce well over 15 hours fun same price quick inexpensive build big enough seen reasonable distance yet small enough go flying field piece Kit Make template wing rib old file folder other thin stiff paper use ball-point pen make 18 Model Aviation Ready flight 1 5-powered Misfit conveys feeling competent deaign reenforced study Neil Uptaks sharply drawn plan Tip plates simulated cabin enhance its looks printed sheet two pieces medium hard 1/16 X 3 X 36 balsa Move tem plate around find ribs can cut sheet need 24 After ribs have cut out gang sanded same shape size tem plate take four center stack cut 1/16 top bottom center ribs will receive sheeting mark R2 trailing edge sheeting cut piece 1/16 X 3 X 36 hard balsa Because four inch wide fourth must made splicing three have stripped cut length 221/16 remaining one-inch-wide strips spliced form fourth wing spars stripped sheet 3/16 X 3 X 36 medium hard balsa Cut eight strips 3/16 sq four strips 3/16 3/8 extra 3/16 sq stabilizer rudder spar webbing 1-15/16 1 1/16 16 vertical grain balsa four plywood dihedral braces cut 1/s ply wood landing gear mount stabilizer spar doublers 3/16 strips cut 1/32 plywood used wing tip plates Cut fuselage sides two pieces medium soft 3/32 X 4 X 36 balsa shape shown plan side view lines straight use straight edge Pin two sides together gang sand same outline 1/32 ply doublers cut fit finished sides left right cabin doublers cut 1 / 16 sheet balsa longerons uprights /t sq soft balsa Cut cabin formers /s plywood center cut-outs December1978 19 designer flies aircraft camera typical pass nandy likes planes flit nervous stick tweakers should happy its responsiveness Gallon fuel gives 15 hours Assembled fuselage sides before joining togethernote longe rona notched fit over doublers Its textbook structure aileron servo well formed after wing panels have joined together top center section sheeting completed messy slotting pinning epoxy annoy simple MonoOte hinged rudder takes little time neat Hinges before covering Aileron torque rods installed what has become almost standard arrangement Note aileron grooved receive rod 0 S / 1/8 PLYWOOD DIHEDRAL BRACES 1/4 SPRUCE DRILLED FOR AILERON LINKAGE ADJUSTABLE STEER 1/16 BALSA DECK FORMER BELLCRANK N 1 3/4 SPINNER 15 MAX ENGINE ON TATONE MOUNT 1/2 WHEELS 3 ALIKE-~ 20 Model Aviation SERA TRAY 3/32 BALSA SIDE I/32PLYMOD WALL DOUBLER TO F2 FI TWO PART FIREWALL FROM 1/8 PLYWOOD MIDWEST L G STRAPS SCREW UNDER 1/8 PLY PLATRWI 1 3/16 MUSIC WIRE 1/16 PLYWOOD WEBS 4 BAYS 1/4 DOWEL WING HOLD DOWNS 3/16 SQ BALSA ENTIRE FiN ASSEMBLY 3/16 SQ BALSA ALL STABILIZER FRAMES 1/16 BALSA TOP AND BOTIOM PLANKS NYROD TO RUDDER CONTROL HORN NYROD 10 ELEVAlOR II LI \4fl4 3/16 S4EET BALSA RUDDER TAPE HINGES MIDWEST WNTROL HORNS 3/16 BALSA ELEVATOR II 3i6 BALSA BLOCK 1/32 PLIWOOD REINF 3/32 BALSA SIDE PLANKS ________________________ I/8SQ HARD BALSA ALL FUSELAGE LONGERONS AND BRACES 1/16 TR EDGE PLANKS -TOP AND BOTTOM 3/32 BALSA SPAR WEBBING 12 BAY 1/8 SQ TR EDGE FILLER \l 3/16 BALSA AILERONS 1/16 BALSA DOUBLER AT lop AND BOTUOM BALSA RIBS I/4SQ BALSA LEADING EDGE 3/16 X 3/8 HARD BALSA TOP AND BOTTOM SPARS 3/16SQ HARD BALSA LEADIIG EDGE SliFFENERS 1/32 PLYWOOD liP PLATES December 1978 21 K / 9 ers can used make firewall Cut shape glue together epoxy form firewall Drill firewall engine mounts fuel lines throttle linkage addition 1 / 16 sheet balsa wing center section fuselage top bottom completes kit Fuselage Epoxy 1/32 plywood doublers forward part fuselage sides making sure left right sides plywood doublers side cabin doublers notched fit over ply doubler glued place Longerons notched fit over cabin doublers glued uprights stabi lizer supports added last dry again pin two sides together sand edges true square Place side over side view plans mark location cabin formers side still flat plan glue cabin formers loca tions using square right triangle keep square fuselage side certain formers belong front front etc glue has set glue other side top formers using square make sure edges both sides square other front back top bottom dry place bottom fuselage flat work surface over top view plan Bring nose sides firewall epoxy place hold ing clamps string rubber bands whatever works Bring tail together beveling fit glueing being sure stabilizer cut-outs parallel work surface Locate position landing gear mount notch bottom fuselage sides 1/16 sheeting added landing gear mount wont stick up above Glue mount sheet bottom 1 / 16 balsa cross grain Cut exit holes outer nyrod install rods using epoxy exit fuselage side add bulkheads aft fuselage shown hold place Epoxy brass tube fuel over flow lines through firewall T nuts engine mount back Install fuel tank using foam bottom sides wedge tank position 3/16 balsa bulkhead hind Attach fuel overflow lines Use inner nyrod bring throttle through firewall cabin epoxy firewall Sheet fuse lage 1/16 firewall LI P%X OONON&L SOOO CO OMOMOOr 80*00 Crooo- 22 Model Aviation servo place aileron linkage hooked upall ready fly nree nooysnop strap iittings noia main gear plywood floor L7iTVXtvmi1HOOTS 0 0800 OOON00N0N j0T Strip ailerons one-piece elevator minimize fussing Red yellow color scheme eye-catching forward cabin former Cut hole sheeting inner nyrod nose gear steering shown Use epoxy microballoons install nyrod making sure extends well cabin Com plete top sheeting install cabin gussets fuselage ready finalto pin bottom trailing edge sandingsheeting place Glue piece /s sq back edge sheeting Using rib Wing Cover plans backingas gauge pin bottom main spar MonoKote film clean-plans center both wing panels ers bag keep structure stickingContinued page 99 I- Y ir' rT 1 L11 IL1[L t YflLSO.AJSNn ONN KJ 0454 4 * u moo. 00400kSO&NA 40 WOM 0601040 7*00oo.oOrt LmJ LrL_1 ____----5 STRAP~0046400 S&TION N-N December1978 23 Servo installation showing nosewheel throttle pushrods brought Randy seems have custom-tinkered servo arms Kratt 4-Ounce tank wedged piece foamneat installation II/ HI 1 / 0 N w 4 0 w w 0 w -J 4 -J 4 z 4 -J w N -J -J U Ace RIC proud announce new member family servos popular Digital Commander line radio equipment kits Bantam Midget brother Bantam servo has respected name servos years Bantam Midget considerably smaller lighter boasts same torque gear strength its big brother bit speed Notice extremely low profile--important interfacing elevator rudder servos aileron servo linkages Reread above paragraph consider fact Midget offers servo micro-miniature category also has power strength 60 powered pattern ships Truly universal servo Signetics 544 IC external driver transistors quality plastic conductive element pot other components make combination has become synonymous Ace R/C Digital Commander servos Servos have Competition Grade performance economical price tag Bantam Midget will work modern positive pulse system negative pulse systems ProLine etc pulse inverter 14G18--$2 required servo rotary wheel extended arm adjustable arm furnished No connectors furnished servo kits flite packs complete systems available Midget option please write details Bwnt4 /Wc44t Size Height--1125 Length--143 Width--O7 Weight 85 oz 24 grams Thrust 20 oz Transit Time Under 5 sec 900 BREAKTHROUGH IN SERVOS 14G20R--Bantam Midget Kit $2395 14G2ORC--Bantam Midget Assembled $2895 AG Please send yeur complete talog Enclased Si 00 refunded myNAME first order Add 550 far 1st clans mailADDRESS return add $100 handling oa ether dencur idea glide angle also re sponse rate elevator will valu able event have un expected engine flame-out Dead-stick landings easy wing full holes essentially case formation plane thing four-ounce tank well ahead CG Blue Birds get bit tailheavy fly tank dry No problem ready trim change avoid usually flying about two ounces worth Youll probably cuss times try figure out some less obvious construction features go ahead Persevere Youll hit show Blue Birds RC Technique/Myers continued page 17 engine Discussed above 4 Plan landing before take off obvious have wonder landings maneuver nearly everyone does poorly can see jaw muscles tighten eyes go squinty engine stops unexpectedly flight Now get out seems first thought heads Sure aware air plane accidents happen vicinity runway thats no reason panic glider easier land powered STATE zrROX 511E HIGGINSVILLE MO plane another aphorisms gives student confidence can land safely Concentrate keeping wings level simple instruction foremost mind students make good landings being aware fact plane has stopped moving Spot landings another matter like learning shoot gun first thing get shots part target Once happens its quite easy move group over Bullseye CORRECTIONS September issue Wing Sax trans portation bags GBS Enterprises re ferred Wind Sox regret error October issue page 60 center photo Keith Clodfelter erroneously identified James Duckworth November issue Wildcat RC scale model described article subhead requiring Pee Wee 02 although text plan cutaway drawing said TD TD theres world difference November issue Nats RC Pattern re port references Tony Bonetti tended mean flying skill better ever apologies Tony anyone else may have felt something else meant Tony has enviable track record Pattern competitOns Thats enough month Keep letters coming George Myers 70 Froehlich Farm Rd Hicksville NY 11801 M isfi it/Randolph continued page 23 ribs R2 located pin piece scrap 1/16 sheet between trailing edge main spar hold rib R2 up plans 1/16 bot tom sheeting added later will flush Glue first regular rib near center wing place over plan glue plywood webs spar its outboard side webbing makes excellent spacer assures ribs perpendicular spar well Continue adding ribs webs out tip no web between last few tip ribs After ribs place glue top main spar sure good contact webs well ribs Glue plywood web inboard first regular rib installed near center sec tion slide first R2 glue place Glue top front spar place bevel /8 sq trailing edge re ceive top trailing sheet glue place other half wing assem bled same sequence both wing halves have sembled bevel spars leading trailing edges will joined December1978 99 WORLD S LARGEST MASTER MODE S ASS T GIANTS OF ABOUT 5 10 FT SPANS Catalog Sssbsuriplion $8 Art mo IIi0 Order Pan no - numbers osk since ouese beconse n volunteer deriorsernire orgonisutioc orirhour denier supporr seC,rr98 Loek Hudson Bomb $4974Doolinln Gee Beo$4577 Flying Font 0-170$30 58Suyerrrorne 5dB$29102 Flying Forr 8-170$49 62Nousord Ike Boon$2365 M Monsuder 8-26$39 7$RTs Weddeli-Wos$39y 600 6 Comet Onuen$18y 74 yeseo Speulni$35 589970 62 HomMrMulljgunS32 60asu $1 Mosqoiro iSqrr 6321 $36 1$$ 70Onyic Gee-Bee$3965 BW Brd-0ye$29 55Heoth Boby Boiler$23$1 58Morebi M-5 Sen Fm$147$ 62 Corns 90mb P6E $39 107 Morrin MB-i Borrrb 60 Curl 7lrnike A-$$22 M Coudror 0-Ill Ob 015 60$ouglos 0-30 Ok $1561 AEG 019 Booker51$ 71Morrin 8-10 Bomb $205$ Snierson 2A2$15 43Skyrouker XF5F $1682 SleosnOub $19$30 57Curt Gb SG3C-1 $1516 Goriro 019 Booker$49 1100 PLANS AVAILABLE form dihedral angle done sanding block bench radial arm saw After beveling join two halves gether two main braces either side main spars trailing edge brace between top bottom trailing edge sheets Place wing half flat bench raise other wing tip until dihedral braces flush top bottom bath main spars center joint good fit trail mg edge Support wing angle glue dihedral braces Ali phatic resin glue recommended joint Clothes pins useful hold braces alignment glue dries Cut front two R2 ribs t main spar notch glue together center dihedral joint between main spar lead ing edge Add 3/16 balsa gussets side aft part R2s cut /$ aft main spar notch glued either side dihedral joint shown form cutout aileron servo piece scrap 1/16 balsa sheet between forms box Another piece scrap box trailing edge center completes structure sheeting Notice center sheeting between spars sheet bottom wing between R2s form box aileron servo Add 3/16 balsa gussets tip ribs wing ready finish sanding ailerons cut 3/16 balsa sheet sanded shape sanding block cut 1 tip bevel leading edges cut-offs glue wing tip trailing edges raised 1/16 gives washout wing tips Epoxy aileron hardware trailing edge shown original 1/16 ID brass tubing 1/16 wire bent form torque rod horn sure relieve trailing edge its back-up block allow movement aileron horns exit tubing Notch groove ailerons receive torque rods Install just prior covering Stabilizer Fin Rudder tail group built over plans thing re member add spar doublers before solid center section diagonal braces building stabilizer rudder elevator cut 3/16 sheet balsa pinned respective fixed surface final sanding usually apply good shot Hot Stuff location horns movable surface toughen up wood Completion parts sanded well 150 grit sandpaper Round edges fuselage except wing mount leading edges wing stabilizer fin rounded off well trailing edges elevator rudder piece l covered sandpaper excellent tool smooth inside gussets cabin wing tips think finished sand everything again 220 grit sandpaper Balance wing Use piece c wire fulcrum center wing use heaviest aileron side lightest wing panel still doesnt balance add weight light tip main spar can drilled tip accept whatever weight necessary plane should covered plas tic film like MonoKote use form hinges well Start rud der fin Iron 3/8-wide strip over trailing edge fin another strip same size over leading edge rudder strip should lap about / either side edges hinges made ironing 1/16 glue sides two pieces 1 MonoKote together form piece 1 15/16 glue side up half glue side down other half Two make hinge two hinges rudder four ele vator five ailerons hinge rudder fin iron hinge half top bottom side rudder turn over iron other two halves just inboard first ones joint hinge halves should fall right center rudder leading edge Bring rudder fin together crisscross hinges side rudder opposite side fin hold fin rudder position iron hinges fin both sides makes close strong hinge Cover fin rudder normal way hinge line fore aft procedure followed elevator well ailerons ailerons hinged torque rod epoxied aileron same time joined wing hinges will hold alignment until epoxy sets Epoxy tip plates wing after have covered Cut away covering tip plates contact wing tip After fuselage covered glue l wing holddowns Using polyurethane paint match trim paint firewall over lapping MonoKote little seal edges joints Black MonoKote stripped 1/16 wide makes good pin stripes between colors used trim Install engine mount 4-40 X bolts drilled accept engine hole drilled down through back part mount nose gear shown Bend main gear 3/32 music wire shape shown plans install plywood landing gear mount bottom fuselage metal landing gear mounting strips small wood screws screws cut off point does stick through plywood cabin Use epoxy holes fore screwing last time Bend nose gear music wire Instail wheel collar just above coil bear bottom engine mount Solder collar gear Another wheel collar top secures gear Mount steering arm above top collar engage piece 040 music wirefrom rudder servo through inner nyrod top left side fuselage mount servos plywood trays small wood screws trays Hot Stuffed fuselage sides proper place bring CG alignment Install aileron servo wood screws small plywood pads Hot-Stuffed top 3/16 balsa risers front back servo cut-out bottom wing servo should fit far down cut-out possible Hook up ailerons ele vator rudder install engine prop lets go Hying Range check before test flying radio installation different take few extra minutes check make sure ai lerons hooked up correctly CG should just under main spar should no noticeable warps wing tail Set control surfaces neutral ailerons flat bottom wing trim levers middle range Start engine set idle check control movements high low throttle taxi around runway min ute two get feel rudder throttle head wind go Misfit requires guidance Wherever leave will remain air plane called neutral stability As ability will complete slow roll straight up before running out steam loops can big round pattern style little button hooks Inverted flight easy little forward push elevator trim lever knife-edge flight dont use full aileron rudder wont hold Instead use full rudder fly ailerons Snaps spins require full elevator full rudder full aileron aileron can relaxed after spin initiated recovery rapid neu tralized controls Landings gentle since ailerons solid well stall wing tips have no tendency fall off fact Misfit can flown full up 100 Model Aviation elevator just enough throttle remain airborne still answer ailerons good 20 will enhance vertical per formance other worth trouble See later Im going flitting RC Scale Wischers continued page 25 didnt crash takeoff surest way us convince other modelers try hands scale prevent ac cidents being well practiced other planes before attempting flights scale models often heard excuse scale planes hard fly easily damaged crashed no longer valid Scale Wheels avid scale buffs have making own tires complete side-wall lettering number years first saw Toledo DeHavilland Hornet built Dario Bris ighella displayed machined mold ing dies used form tires silicone rubber Woodvale World Champion ships first-place winning Fournier Mick Reeves also hand-made tire its single landing wheel complete legible lettering side walls Mick used silicone rubber rather thick section support weight lettering scale size quite small therefore difficult engrave mold ing die example exten sive effort required world class model effect rule states FAI contest entrant must make declaration items used plane made builder planes wheels tires appear list parts quite often parts purchased FAI Precision Scale possible detail made builder Robart now producing Universal Scale Wheels lettering side walls Hubs molded high strength Lexan Tires low rebound thermoplas tic rubber Continental Deutsches Fabrikat 690 side wingfoot insignia Goodyear Weather 32 X 8 Airplane other side using wheels have found necessary maximum realism remove gloss tire material happens naturally age user may wish hasten process buffing fine sandpaper rubbing very gently cloth moistened dope thinner Robart now furnishes instructions three alternative methods inflating tires withstand load heavier scale models include use dry ice Alka Seltzer pressurizing agents Also described old method refrigerat ing wheel cause contraction air sealing screws loosened screws rapidly tightened trapped air expands room temperature pressurize tire hub discs furnished Robart can modified closely resemble pro totype wheels reworking center disc can removed drill ing filing leave rim new disc plywood styrene plastic epoxied back give depth hub disc Small bits tubing hex screw heads epoxied place ideal use new Hobbypoxy Thixotropic Epoxy Glue stays put applied does run discs painted dull aluminum Floquil resemble wheel castings prototype appearance improvement worthwhile Sport Scale plane detail can seen distance problem have Robart tires flat spot occurs tires model stands position prolonged period solved mak ing balsa stand support plane axles remove load tires flat spot difficult remove model will bounce unrealistically taxiing flats persist Pressurizing helps round out flattened tire Another method suggested Mike Gretz stuff Robart tires firm poly foam preference frequent inflation have also used two sets wheels dis play other flying display tires stuffed balsa discs cut seg ments easy assembly would suitable flying very hard would absorb no landing shock Flap Effectiveness use flaps pro totype airplanes has become common almost model modern plane will likely use seems no agreement between modelers ef fect takeoff landing expe rience no surprise between similar planes effect flaps hard predict until plane flown plane complete disappointment seem have no effect whatever another plane definitely slowed flaps applied Very likely good explanation variation lack aerodynamic knowledge ob scures reason increase lift drag flaps lowered model flying near cruising speed crease lift will cause momentary climb ballooning same time ad ditional drag will slow plane cause steepening glide angle steeper angle modeler attempting spot landing advantage makes point touch-down predictable some planes additional effect increase stability flaps lowered plane seems find groove undisturbed wind conditions Having slowed drag controls become less effective small stick movements have less effect glide path Most advantages flaps fullscale planes small consequence model especially true flaps used takeoff no good reason increase drag models require increase lift except four-engine 120-pound monsters marginal power have seen recently addition flaps actu ating mechanism servo adds large amount weight model could very well nullify benefits derived use trim change flaps lowered could source problems time least appreciated especially true contest judges ask December 1978 101 AM Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST R/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-RAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Mode4 Co Inc US ftte 1& North St Topsfjeld Mass 01983 887-8541 Support AMA Price $3995 kit per dollar bar em all
Edition: Model Aviation - 1978/12
Page Numbers: 18, 19, 20, 21, 22, 23, 99, 100, 101
For four channels 15 engine responsive sport machine fully aerobaticat cost wont blow away allowance U 1 F Randolph ONE OF MY flying buddies claims airplanes flit rather fly true have known fly large fuel-guzzling 40s occa sions like small quick airplanes Misfit same flying buddy also thinks should build stand-off scale models lots guns bombs make lots smoke noise does airplane does look like model air plane no interest Misfit looks like model airplane Misfit quick forgiving airplane addition wing tip plates something goes back free-flight days fore WW II built wash-in both tips make airplane must made snap ailerons remain active well stall sum up Misfit groovy rolling spinning snapping looping knife-edging fun-fly winner will go point what ask ask too much forgive Misfit cheap date too gallon low-nitro fuel will fly 10 hours 40 minutes full bore half throttle will produce well over 15 hours fun same price quick inexpensive build big enough seen reasonable distance yet small enough go flying field piece Kit Make template wing rib old file folder other thin stiff paper use ball-point pen make 18 Model Aviation Ready flight 1 5-powered Misfit conveys feeling competent deaign reenforced study Neil Uptaks sharply drawn plan Tip plates simulated cabin enhance its looks printed sheet two pieces medium hard 1/16 X 3 X 36 balsa Move tem plate around find ribs can cut sheet need 24 After ribs have cut out gang sanded same shape size tem plate take four center stack cut 1/16 top bottom center ribs will receive sheeting mark R2 trailing edge sheeting cut piece 1/16 X 3 X 36 hard balsa Because four inch wide fourth must made splicing three have stripped cut length 221/16 remaining one-inch-wide strips spliced form fourth wing spars stripped sheet 3/16 X 3 X 36 medium hard balsa Cut eight strips 3/16 sq four strips 3/16 3/8 extra 3/16 sq stabilizer rudder spar webbing 1-15/16 1 1/16 16 vertical grain balsa four plywood dihedral braces cut 1/s ply wood landing gear mount stabilizer spar doublers 3/16 strips cut 1/32 plywood used wing tip plates Cut fuselage sides two pieces medium soft 3/32 X 4 X 36 balsa shape shown plan side view lines straight use straight edge Pin two sides together gang sand same outline 1/32 ply doublers cut fit finished sides left right cabin doublers cut 1 / 16 sheet balsa longerons uprights /t sq soft balsa Cut cabin formers /s plywood center cut-outs December1978 19 designer flies aircraft camera typical pass nandy likes planes flit nervous stick tweakers should happy its responsiveness Gallon fuel gives 15 hours Assembled fuselage sides before joining togethernote longe rona notched fit over doublers Its textbook structure aileron servo well formed after wing panels have joined together top center section sheeting completed messy slotting pinning epoxy annoy simple MonoOte hinged rudder takes little time neat Hinges before covering Aileron torque rods installed what has become almost standard arrangement Note aileron grooved receive rod 0 S / 1/8 PLYWOOD DIHEDRAL BRACES 1/4 SPRUCE DRILLED FOR AILERON LINKAGE ADJUSTABLE STEER 1/16 BALSA DECK FORMER BELLCRANK N 1 3/4 SPINNER 15 MAX ENGINE ON TATONE MOUNT 1/2 WHEELS 3 ALIKE-~ 20 Model Aviation SERA TRAY 3/32 BALSA SIDE I/32PLYMOD WALL DOUBLER TO F2 FI TWO PART FIREWALL FROM 1/8 PLYWOOD MIDWEST L G STRAPS SCREW UNDER 1/8 PLY PLATRWI 1 3/16 MUSIC WIRE 1/16 PLYWOOD WEBS 4 BAYS 1/4 DOWEL WING HOLD DOWNS 3/16 SQ BALSA ENTIRE FiN ASSEMBLY 3/16 SQ BALSA ALL STABILIZER FRAMES 1/16 BALSA TOP AND BOTIOM PLANKS NYROD TO RUDDER CONTROL HORN NYROD 10 ELEVAlOR II LI \4fl4 3/16 S4EET BALSA RUDDER TAPE HINGES MIDWEST WNTROL HORNS 3/16 BALSA ELEVATOR II 3i6 BALSA BLOCK 1/32 PLIWOOD REINF 3/32 BALSA SIDE PLANKS ________________________ I/8SQ HARD BALSA ALL FUSELAGE LONGERONS AND BRACES 1/16 TR EDGE PLANKS -TOP AND BOTTOM 3/32 BALSA SPAR WEBBING 12 BAY 1/8 SQ TR EDGE FILLER \l 3/16 BALSA AILERONS 1/16 BALSA DOUBLER AT lop AND BOTUOM BALSA RIBS I/4SQ BALSA LEADING EDGE 3/16 X 3/8 HARD BALSA TOP AND BOTTOM SPARS 3/16SQ HARD BALSA LEADIIG EDGE SliFFENERS 1/32 PLYWOOD liP PLATES December 1978 21 K / 9 ers can used make firewall Cut shape glue together epoxy form firewall Drill firewall engine mounts fuel lines throttle linkage addition 1 / 16 sheet balsa wing center section fuselage top bottom completes kit Fuselage Epoxy 1/32 plywood doublers forward part fuselage sides making sure left right sides plywood doublers side cabin doublers notched fit over ply doubler glued place Longerons notched fit over cabin doublers glued uprights stabi lizer supports added last dry again pin two sides together sand edges true square Place side over side view plans mark location cabin formers side still flat plan glue cabin formers loca tions using square right triangle keep square fuselage side certain formers belong front front etc glue has set glue other side top formers using square make sure edges both sides square other front back top bottom dry place bottom fuselage flat work surface over top view plan Bring nose sides firewall epoxy place hold ing clamps string rubber bands whatever works Bring tail together beveling fit glueing being sure stabilizer cut-outs parallel work surface Locate position landing gear mount notch bottom fuselage sides 1/16 sheeting added landing gear mount wont stick up above Glue mount sheet bottom 1 / 16 balsa cross grain Cut exit holes outer nyrod install rods using epoxy exit fuselage side add bulkheads aft fuselage shown hold place Epoxy brass tube fuel over flow lines through firewall T nuts engine mount back Install fuel tank using foam bottom sides wedge tank position 3/16 balsa bulkhead hind Attach fuel overflow lines Use inner nyrod bring throttle through firewall cabin epoxy firewall Sheet fuse lage 1/16 firewall LI P%X OONON&L SOOO CO OMOMOOr 80*00 Crooo- 22 Model Aviation servo place aileron linkage hooked upall ready fly nree nooysnop strap iittings noia main gear plywood floor L7iTVXtvmi1HOOTS 0 0800 OOON00N0N j0T Strip ailerons one-piece elevator minimize fussing Red yellow color scheme eye-catching forward cabin former Cut hole sheeting inner nyrod nose gear steering shown Use epoxy microballoons install nyrod making sure extends well cabin Com plete top sheeting install cabin gussets fuselage ready finalto pin bottom trailing edge sandingsheeting place Glue piece /s sq back edge sheeting Using rib Wing Cover plans backingas gauge pin bottom main spar MonoKote film clean-plans center both wing panels ers bag keep structure stickingContinued page 99 I- Y ir' rT 1 L11 IL1[L t YflLSO.AJSNn ONN KJ 0454 4 * u moo. 00400kSO&NA 40 WOM 0601040 7*00oo.oOrt LmJ LrL_1 ____----5 STRAP~0046400 S&TION N-N December1978 23 Servo installation showing nosewheel throttle pushrods brought Randy seems have custom-tinkered servo arms Kratt 4-Ounce tank wedged piece foamneat installation II/ HI 1 / 0 N w 4 0 w w 0 w -J 4 -J 4 z 4 -J w N -J -J U Ace RIC proud announce new member family servos popular Digital Commander line radio equipment kits Bantam Midget brother Bantam servo has respected name servos years Bantam Midget considerably smaller lighter boasts same torque gear strength its big brother bit speed Notice extremely low profile--important interfacing elevator rudder servos aileron servo linkages Reread above paragraph consider fact Midget offers servo micro-miniature category also has power strength 60 powered pattern ships Truly universal servo Signetics 544 IC external driver transistors quality plastic conductive element pot other components make combination has become synonymous Ace R/C Digital Commander servos Servos have Competition Grade performance economical price tag Bantam Midget will work modern positive pulse system negative pulse systems ProLine etc pulse inverter 14G18--$2 required servo rotary wheel extended arm adjustable arm furnished No connectors furnished servo kits flite packs complete systems available Midget option please write details Bwnt4 /Wc44t Size Height--1125 Length--143 Width--O7 Weight 85 oz 24 grams Thrust 20 oz Transit Time Under 5 sec 900 BREAKTHROUGH IN SERVOS 14G20R--Bantam Midget Kit $2395 14G2ORC--Bantam Midget Assembled $2895 AG Please send yeur complete talog Enclased Si 00 refunded myNAME first order Add 550 far 1st clans mailADDRESS return add $100 handling oa ether dencur idea glide angle also re sponse rate elevator will valu able event have un expected engine flame-out Dead-stick landings easy wing full holes essentially case formation plane thing four-ounce tank well ahead CG Blue Birds get bit tailheavy fly tank dry No problem ready trim change avoid usually flying about two ounces worth Youll probably cuss times try figure out some less obvious construction features go ahead Persevere Youll hit show Blue Birds RC Technique/Myers continued page 17 engine Discussed above 4 Plan landing before take off obvious have wonder landings maneuver nearly everyone does poorly can see jaw muscles tighten eyes go squinty engine stops unexpectedly flight Now get out seems first thought heads Sure aware air plane accidents happen vicinity runway thats no reason panic glider easier land powered STATE zrROX 511E HIGGINSVILLE MO plane another aphorisms gives student confidence can land safely Concentrate keeping wings level simple instruction foremost mind students make good landings being aware fact plane has stopped moving Spot landings another matter like learning shoot gun first thing get shots part target Once happens its quite easy move group over Bullseye CORRECTIONS September issue Wing Sax trans portation bags GBS Enterprises re ferred Wind Sox regret error October issue page 60 center photo Keith Clodfelter erroneously identified James Duckworth November issue Wildcat RC scale model described article subhead requiring Pee Wee 02 although text plan cutaway drawing said TD TD theres world difference November issue Nats RC Pattern re port references Tony Bonetti tended mean flying skill better ever apologies Tony anyone else may have felt something else meant Tony has enviable track record Pattern competitOns Thats enough month Keep letters coming George Myers 70 Froehlich Farm Rd Hicksville NY 11801 M isfi it/Randolph continued page 23 ribs R2 located pin piece scrap 1/16 sheet between trailing edge main spar hold rib R2 up plans 1/16 bot tom sheeting added later will flush Glue first regular rib near center wing place over plan glue plywood webs spar its outboard side webbing makes excellent spacer assures ribs perpendicular spar well Continue adding ribs webs out tip no web between last few tip ribs After ribs place glue top main spar sure good contact webs well ribs Glue plywood web inboard first regular rib installed near center sec tion slide first R2 glue place Glue top front spar place bevel /8 sq trailing edge re ceive top trailing sheet glue place other half wing assem bled same sequence both wing halves have sembled bevel spars leading trailing edges will joined December1978 99 WORLD S LARGEST MASTER MODE S ASS T GIANTS OF ABOUT 5 10 FT SPANS Catalog Sssbsuriplion $8 Art mo IIi0 Order Pan no - numbers osk since ouese beconse n volunteer deriorsernire orgonisutioc orirhour denier supporr seC,rr98 Loek Hudson Bomb $4974Doolinln Gee Beo$4577 Flying Font 0-170$30 58Suyerrrorne 5dB$29102 Flying Forr 8-170$49 62Nousord Ike Boon$2365 M Monsuder 8-26$39 7$RTs Weddeli-Wos$39y 600 6 Comet Onuen$18y 74 yeseo Speulni$35 589970 62 HomMrMulljgunS32 60asu $1 Mosqoiro iSqrr 6321 $36 1$$ 70Onyic Gee-Bee$3965 BW Brd-0ye$29 55Heoth Boby Boiler$23$1 58Morebi M-5 Sen Fm$147$ 62 Corns 90mb P6E $39 107 Morrin MB-i Borrrb 60 Curl 7lrnike A-$$22 M Coudror 0-Ill Ob 015 60$ouglos 0-30 Ok $1561 AEG 019 Booker51$ 71Morrin 8-10 Bomb $205$ Snierson 2A2$15 43Skyrouker XF5F $1682 SleosnOub $19$30 57Curt Gb SG3C-1 $1516 Goriro 019 Booker$49 1100 PLANS AVAILABLE form dihedral angle done sanding block bench radial arm saw After beveling join two halves gether two main braces either side main spars trailing edge brace between top bottom trailing edge sheets Place wing half flat bench raise other wing tip until dihedral braces flush top bottom bath main spars center joint good fit trail mg edge Support wing angle glue dihedral braces Ali phatic resin glue recommended joint Clothes pins useful hold braces alignment glue dries Cut front two R2 ribs t main spar notch glue together center dihedral joint between main spar lead ing edge Add 3/16 balsa gussets side aft part R2s cut /$ aft main spar notch glued either side dihedral joint shown form cutout aileron servo piece scrap 1/16 balsa sheet between forms box Another piece scrap box trailing edge center completes structure sheeting Notice center sheeting between spars sheet bottom wing between R2s form box aileron servo Add 3/16 balsa gussets tip ribs wing ready finish sanding ailerons cut 3/16 balsa sheet sanded shape sanding block cut 1 tip bevel leading edges cut-offs glue wing tip trailing edges raised 1/16 gives washout wing tips Epoxy aileron hardware trailing edge shown original 1/16 ID brass tubing 1/16 wire bent form torque rod horn sure relieve trailing edge its back-up block allow movement aileron horns exit tubing Notch groove ailerons receive torque rods Install just prior covering Stabilizer Fin Rudder tail group built over plans thing re member add spar doublers before solid center section diagonal braces building stabilizer rudder elevator cut 3/16 sheet balsa pinned respective fixed surface final sanding usually apply good shot Hot Stuff location horns movable surface toughen up wood Completion parts sanded well 150 grit sandpaper Round edges fuselage except wing mount leading edges wing stabilizer fin rounded off well trailing edges elevator rudder piece l covered sandpaper excellent tool smooth inside gussets cabin wing tips think finished sand everything again 220 grit sandpaper Balance wing Use piece c wire fulcrum center wing use heaviest aileron side lightest wing panel still doesnt balance add weight light tip main spar can drilled tip accept whatever weight necessary plane should covered plas tic film like MonoKote use form hinges well Start rud der fin Iron 3/8-wide strip over trailing edge fin another strip same size over leading edge rudder strip should lap about / either side edges hinges made ironing 1/16 glue sides two pieces 1 MonoKote together form piece 1 15/16 glue side up half glue side down other half Two make hinge two hinges rudder four ele vator five ailerons hinge rudder fin iron hinge half top bottom side rudder turn over iron other two halves just inboard first ones joint hinge halves should fall right center rudder leading edge Bring rudder fin together crisscross hinges side rudder opposite side fin hold fin rudder position iron hinges fin both sides makes close strong hinge Cover fin rudder normal way hinge line fore aft procedure followed elevator well ailerons ailerons hinged torque rod epoxied aileron same time joined wing hinges will hold alignment until epoxy sets Epoxy tip plates wing after have covered Cut away covering tip plates contact wing tip After fuselage covered glue l wing holddowns Using polyurethane paint match trim paint firewall over lapping MonoKote little seal edges joints Black MonoKote stripped 1/16 wide makes good pin stripes between colors used trim Install engine mount 4-40 X bolts drilled accept engine hole drilled down through back part mount nose gear shown Bend main gear 3/32 music wire shape shown plans install plywood landing gear mount bottom fuselage metal landing gear mounting strips small wood screws screws cut off point does stick through plywood cabin Use epoxy holes fore screwing last time Bend nose gear music wire Instail wheel collar just above coil bear bottom engine mount Solder collar gear Another wheel collar top secures gear Mount steering arm above top collar engage piece 040 music wirefrom rudder servo through inner nyrod top left side fuselage mount servos plywood trays small wood screws trays Hot Stuffed fuselage sides proper place bring CG alignment Install aileron servo wood screws small plywood pads Hot-Stuffed top 3/16 balsa risers front back servo cut-out bottom wing servo should fit far down cut-out possible Hook up ailerons ele vator rudder install engine prop lets go Hying Range check before test flying radio installation different take few extra minutes check make sure ai lerons hooked up correctly CG should just under main spar should no noticeable warps wing tail Set control surfaces neutral ailerons flat bottom wing trim levers middle range Start engine set idle check control movements high low throttle taxi around runway min ute two get feel rudder throttle head wind go Misfit requires guidance Wherever leave will remain air plane called neutral stability As ability will complete slow roll straight up before running out steam loops can big round pattern style little button hooks Inverted flight easy little forward push elevator trim lever knife-edge flight dont use full aileron rudder wont hold Instead use full rudder fly ailerons Snaps spins require full elevator full rudder full aileron aileron can relaxed after spin initiated recovery rapid neu tralized controls Landings gentle since ailerons solid well stall wing tips have no tendency fall off fact Misfit can flown full up 100 Model Aviation elevator just enough throttle remain airborne still answer ailerons good 20 will enhance vertical per formance other worth trouble See later Im going flitting RC Scale Wischers continued page 25 didnt crash takeoff surest way us convince other modelers try hands scale prevent ac cidents being well practiced other planes before attempting flights scale models often heard excuse scale planes hard fly easily damaged crashed no longer valid Scale Wheels avid scale buffs have making own tires complete side-wall lettering number years first saw Toledo DeHavilland Hornet built Dario Bris ighella displayed machined mold ing dies used form tires silicone rubber Woodvale World Champion ships first-place winning Fournier Mick Reeves also hand-made tire its single landing wheel complete legible lettering side walls Mick used silicone rubber rather thick section support weight lettering scale size quite small therefore difficult engrave mold ing die example exten sive effort required world class model effect rule states FAI contest entrant must make declaration items used plane made builder planes wheels tires appear list parts quite often parts purchased FAI Precision Scale possible detail made builder Robart now producing Universal Scale Wheels lettering side walls Hubs molded high strength Lexan Tires low rebound thermoplas tic rubber Continental Deutsches Fabrikat 690 side wingfoot insignia Goodyear Weather 32 X 8 Airplane other side using wheels have found necessary maximum realism remove gloss tire material happens naturally age user may wish hasten process buffing fine sandpaper rubbing very gently cloth moistened dope thinner Robart now furnishes instructions three alternative methods inflating tires withstand load heavier scale models include use dry ice Alka Seltzer pressurizing agents Also described old method refrigerat ing wheel cause contraction air sealing screws loosened screws rapidly tightened trapped air expands room temperature pressurize tire hub discs furnished Robart can modified closely resemble pro totype wheels reworking center disc can removed drill ing filing leave rim new disc plywood styrene plastic epoxied back give depth hub disc Small bits tubing hex screw heads epoxied place ideal use new Hobbypoxy Thixotropic Epoxy Glue stays put applied does run discs painted dull aluminum Floquil resemble wheel castings prototype appearance improvement worthwhile Sport Scale plane detail can seen distance problem have Robart tires flat spot occurs tires model stands position prolonged period solved mak ing balsa stand support plane axles remove load tires flat spot difficult remove model will bounce unrealistically taxiing flats persist Pressurizing helps round out flattened tire Another method suggested Mike Gretz stuff Robart tires firm poly foam preference frequent inflation have also used two sets wheels dis play other flying display tires stuffed balsa discs cut seg ments easy assembly would suitable flying very hard would absorb no landing shock Flap Effectiveness use flaps pro totype airplanes has become common almost model modern plane will likely use seems no agreement between modelers ef fect takeoff landing expe rience no surprise between similar planes effect flaps hard predict until plane flown plane complete disappointment seem have no effect whatever another plane definitely slowed flaps applied Very likely good explanation variation lack aerodynamic knowledge ob scures reason increase lift drag flaps lowered model flying near cruising speed crease lift will cause momentary climb ballooning same time ad ditional drag will slow plane cause steepening glide angle steeper angle modeler attempting spot landing advantage makes point touch-down predictable some planes additional effect increase stability flaps lowered plane seems find groove undisturbed wind conditions Having slowed drag controls become less effective small stick movements have less effect glide path Most advantages flaps fullscale planes small consequence model especially true flaps used takeoff no good reason increase drag models require increase lift except four-engine 120-pound monsters marginal power have seen recently addition flaps actu ating mechanism servo adds large amount weight model could very well nullify benefits derived use trim change flaps lowered could source problems time least appreciated especially true contest judges ask December 1978 101 AM Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST R/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-RAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Mode4 Co Inc US ftte 1& North St Topsfjeld Mass 01983 887-8541 Support AMA Price $3995 kit per dollar bar em all
Edition: Model Aviation - 1978/12
Page Numbers: 18, 19, 20, 21, 22, 23, 99, 100, 101
For four channels 15 engine responsive sport machine fully aerobaticat cost wont blow away allowance U 1 F Randolph ONE OF MY flying buddies claims airplanes flit rather fly true have known fly large fuel-guzzling 40s occa sions like small quick airplanes Misfit same flying buddy also thinks should build stand-off scale models lots guns bombs make lots smoke noise does airplane does look like model air plane no interest Misfit looks like model airplane Misfit quick forgiving airplane addition wing tip plates something goes back free-flight days fore WW II built wash-in both tips make airplane must made snap ailerons remain active well stall sum up Misfit groovy rolling spinning snapping looping knife-edging fun-fly winner will go point what ask ask too much forgive Misfit cheap date too gallon low-nitro fuel will fly 10 hours 40 minutes full bore half throttle will produce well over 15 hours fun same price quick inexpensive build big enough seen reasonable distance yet small enough go flying field piece Kit Make template wing rib old file folder other thin stiff paper use ball-point pen make 18 Model Aviation Ready flight 1 5-powered Misfit conveys feeling competent deaign reenforced study Neil Uptaks sharply drawn plan Tip plates simulated cabin enhance its looks printed sheet two pieces medium hard 1/16 X 3 X 36 balsa Move tem plate around find ribs can cut sheet need 24 After ribs have cut out gang sanded same shape size tem plate take four center stack cut 1/16 top bottom center ribs will receive sheeting mark R2 trailing edge sheeting cut piece 1/16 X 3 X 36 hard balsa Because four inch wide fourth must made splicing three have stripped cut length 221/16 remaining one-inch-wide strips spliced form fourth wing spars stripped sheet 3/16 X 3 X 36 medium hard balsa Cut eight strips 3/16 sq four strips 3/16 3/8 extra 3/16 sq stabilizer rudder spar webbing 1-15/16 1 1/16 16 vertical grain balsa four plywood dihedral braces cut 1/s ply wood landing gear mount stabilizer spar doublers 3/16 strips cut 1/32 plywood used wing tip plates Cut fuselage sides two pieces medium soft 3/32 X 4 X 36 balsa shape shown plan side view lines straight use straight edge Pin two sides together gang sand same outline 1/32 ply doublers cut fit finished sides left right cabin doublers cut 1 / 16 sheet balsa longerons uprights /t sq soft balsa Cut cabin formers /s plywood center cut-outs December1978 19 designer flies aircraft camera typical pass nandy likes planes flit nervous stick tweakers should happy its responsiveness Gallon fuel gives 15 hours Assembled fuselage sides before joining togethernote longe rona notched fit over doublers Its textbook structure aileron servo well formed after wing panels have joined together top center section sheeting completed messy slotting pinning epoxy annoy simple MonoOte hinged rudder takes little time neat Hinges before covering Aileron torque rods installed what has become almost standard arrangement Note aileron grooved receive rod 0 S / 1/8 PLYWOOD DIHEDRAL BRACES 1/4 SPRUCE DRILLED FOR AILERON LINKAGE ADJUSTABLE STEER 1/16 BALSA DECK FORMER BELLCRANK N 1 3/4 SPINNER 15 MAX ENGINE ON TATONE MOUNT 1/2 WHEELS 3 ALIKE-~ 20 Model Aviation SERA TRAY 3/32 BALSA SIDE I/32PLYMOD WALL DOUBLER TO F2 FI TWO PART FIREWALL FROM 1/8 PLYWOOD MIDWEST L G STRAPS SCREW UNDER 1/8 PLY PLATRWI 1 3/16 MUSIC WIRE 1/16 PLYWOOD WEBS 4 BAYS 1/4 DOWEL WING HOLD DOWNS 3/16 SQ BALSA ENTIRE FiN ASSEMBLY 3/16 SQ BALSA ALL STABILIZER FRAMES 1/16 BALSA TOP AND BOTIOM PLANKS NYROD TO RUDDER CONTROL HORN NYROD 10 ELEVAlOR II LI \4fl4 3/16 S4EET BALSA RUDDER TAPE HINGES MIDWEST WNTROL HORNS 3/16 BALSA ELEVATOR II 3i6 BALSA BLOCK 1/32 PLIWOOD REINF 3/32 BALSA SIDE PLANKS ________________________ I/8SQ HARD BALSA ALL FUSELAGE LONGERONS AND BRACES 1/16 TR EDGE PLANKS -TOP AND BOTTOM 3/32 BALSA SPAR WEBBING 12 BAY 1/8 SQ TR EDGE FILLER \l 3/16 BALSA AILERONS 1/16 BALSA DOUBLER AT lop AND BOTUOM BALSA RIBS I/4SQ BALSA LEADING EDGE 3/16 X 3/8 HARD BALSA TOP AND BOTTOM SPARS 3/16SQ HARD BALSA LEADIIG EDGE SliFFENERS 1/32 PLYWOOD liP PLATES December 1978 21 K / 9 ers can used make firewall Cut shape glue together epoxy form firewall Drill firewall engine mounts fuel lines throttle linkage addition 1 / 16 sheet balsa wing center section fuselage top bottom completes kit Fuselage Epoxy 1/32 plywood doublers forward part fuselage sides making sure left right sides plywood doublers side cabin doublers notched fit over ply doubler glued place Longerons notched fit over cabin doublers glued uprights stabi lizer supports added last dry again pin two sides together sand edges true square Place side over side view plans mark location cabin formers side still flat plan glue cabin formers loca tions using square right triangle keep square fuselage side certain formers belong front front etc glue has set glue other side top formers using square make sure edges both sides square other front back top bottom dry place bottom fuselage flat work surface over top view plan Bring nose sides firewall epoxy place hold ing clamps string rubber bands whatever works Bring tail together beveling fit glueing being sure stabilizer cut-outs parallel work surface Locate position landing gear mount notch bottom fuselage sides 1/16 sheeting added landing gear mount wont stick up above Glue mount sheet bottom 1 / 16 balsa cross grain Cut exit holes outer nyrod install rods using epoxy exit fuselage side add bulkheads aft fuselage shown hold place Epoxy brass tube fuel over flow lines through firewall T nuts engine mount back Install fuel tank using foam bottom sides wedge tank position 3/16 balsa bulkhead hind Attach fuel overflow lines Use inner nyrod bring throttle through firewall cabin epoxy firewall Sheet fuse lage 1/16 firewall LI P%X OONON&L SOOO CO OMOMOOr 80*00 Crooo- 22 Model Aviation servo place aileron linkage hooked upall ready fly nree nooysnop strap iittings noia main gear plywood floor L7iTVXtvmi1HOOTS 0 0800 OOON00N0N j0T Strip ailerons one-piece elevator minimize fussing Red yellow color scheme eye-catching forward cabin former Cut hole sheeting inner nyrod nose gear steering shown Use epoxy microballoons install nyrod making sure extends well cabin Com plete top sheeting install cabin gussets fuselage ready finalto pin bottom trailing edge sandingsheeting place Glue piece /s sq back edge sheeting Using rib Wing Cover plans backingas gauge pin bottom main spar MonoKote film clean-plans center both wing panels ers bag keep structure stickingContinued page 99 I- Y ir' rT 1 L11 IL1[L t YflLSO.AJSNn ONN KJ 0454 4 * u moo. 00400kSO&NA 40 WOM 0601040 7*00oo.oOrt LmJ LrL_1 ____----5 STRAP~0046400 S&TION N-N December1978 23 Servo installation showing nosewheel throttle pushrods brought Randy seems have custom-tinkered servo arms Kratt 4-Ounce tank wedged piece foamneat installation II/ HI 1 / 0 N w 4 0 w w 0 w -J 4 -J 4 z 4 -J w N -J -J U Ace RIC proud announce new member family servos popular Digital Commander line radio equipment kits Bantam Midget brother Bantam servo has respected name servos years Bantam Midget considerably smaller lighter boasts same torque gear strength its big brother bit speed Notice extremely low profile--important interfacing elevator rudder servos aileron servo linkages Reread above paragraph consider fact Midget offers servo micro-miniature category also has power strength 60 powered pattern ships Truly universal servo Signetics 544 IC external driver transistors quality plastic conductive element pot other components make combination has become synonymous Ace R/C Digital Commander servos Servos have Competition Grade performance economical price tag Bantam Midget will work modern positive pulse system negative pulse systems ProLine etc pulse inverter 14G18--$2 required servo rotary wheel extended arm adjustable arm furnished No connectors furnished servo kits flite packs complete systems available Midget option please write details Bwnt4 /Wc44t Size Height--1125 Length--143 Width--O7 Weight 85 oz 24 grams Thrust 20 oz Transit Time Under 5 sec 900 BREAKTHROUGH IN SERVOS 14G20R--Bantam Midget Kit $2395 14G2ORC--Bantam Midget Assembled $2895 AG Please send yeur complete talog Enclased Si 00 refunded myNAME first order Add 550 far 1st clans mailADDRESS return add $100 handling oa ether dencur idea glide angle also re sponse rate elevator will valu able event have un expected engine flame-out Dead-stick landings easy wing full holes essentially case formation plane thing four-ounce tank well ahead CG Blue Birds get bit tailheavy fly tank dry No problem ready trim change avoid usually flying about two ounces worth Youll probably cuss times try figure out some less obvious construction features go ahead Persevere Youll hit show Blue Birds RC Technique/Myers continued page 17 engine Discussed above 4 Plan landing before take off obvious have wonder landings maneuver nearly everyone does poorly can see jaw muscles tighten eyes go squinty engine stops unexpectedly flight Now get out seems first thought heads Sure aware air plane accidents happen vicinity runway thats no reason panic glider easier land powered STATE zrROX 511E HIGGINSVILLE MO plane another aphorisms gives student confidence can land safely Concentrate keeping wings level simple instruction foremost mind students make good landings being aware fact plane has stopped moving Spot landings another matter like learning shoot gun first thing get shots part target Once happens its quite easy move group over Bullseye CORRECTIONS September issue Wing Sax trans portation bags GBS Enterprises re ferred Wind Sox regret error October issue page 60 center photo Keith Clodfelter erroneously identified James Duckworth November issue Wildcat RC scale model described article subhead requiring Pee Wee 02 although text plan cutaway drawing said TD TD theres world difference November issue Nats RC Pattern re port references Tony Bonetti tended mean flying skill better ever apologies Tony anyone else may have felt something else meant Tony has enviable track record Pattern competitOns Thats enough month Keep letters coming George Myers 70 Froehlich Farm Rd Hicksville NY 11801 M isfi it/Randolph continued page 23 ribs R2 located pin piece scrap 1/16 sheet between trailing edge main spar hold rib R2 up plans 1/16 bot tom sheeting added later will flush Glue first regular rib near center wing place over plan glue plywood webs spar its outboard side webbing makes excellent spacer assures ribs perpendicular spar well Continue adding ribs webs out tip no web between last few tip ribs After ribs place glue top main spar sure good contact webs well ribs Glue plywood web inboard first regular rib installed near center sec tion slide first R2 glue place Glue top front spar place bevel /8 sq trailing edge re ceive top trailing sheet glue place other half wing assem bled same sequence both wing halves have sembled bevel spars leading trailing edges will joined December1978 99 WORLD S LARGEST MASTER MODE S ASS T GIANTS OF ABOUT 5 10 FT SPANS Catalog Sssbsuriplion $8 Art mo IIi0 Order Pan no - numbers osk since ouese beconse n volunteer deriorsernire orgonisutioc orirhour denier supporr seC,rr98 Loek Hudson Bomb $4974Doolinln Gee Beo$4577 Flying Font 0-170$30 58Suyerrrorne 5dB$29102 Flying Forr 8-170$49 62Nousord Ike Boon$2365 M Monsuder 8-26$39 7$RTs Weddeli-Wos$39y 600 6 Comet Onuen$18y 74 yeseo Speulni$35 589970 62 HomMrMulljgunS32 60asu $1 Mosqoiro iSqrr 6321 $36 1$$ 70Onyic Gee-Bee$3965 BW Brd-0ye$29 55Heoth Boby Boiler$23$1 58Morebi M-5 Sen Fm$147$ 62 Corns 90mb P6E $39 107 Morrin MB-i Borrrb 60 Curl 7lrnike A-$$22 M Coudror 0-Ill Ob 015 60$ouglos 0-30 Ok $1561 AEG 019 Booker51$ 71Morrin 8-10 Bomb $205$ Snierson 2A2$15 43Skyrouker XF5F $1682 SleosnOub $19$30 57Curt Gb SG3C-1 $1516 Goriro 019 Booker$49 1100 PLANS AVAILABLE form dihedral angle done sanding block bench radial arm saw After beveling join two halves gether two main braces either side main spars trailing edge brace between top bottom trailing edge sheets Place wing half flat bench raise other wing tip until dihedral braces flush top bottom bath main spars center joint good fit trail mg edge Support wing angle glue dihedral braces Ali phatic resin glue recommended joint Clothes pins useful hold braces alignment glue dries Cut front two R2 ribs t main spar notch glue together center dihedral joint between main spar lead ing edge Add 3/16 balsa gussets side aft part R2s cut /$ aft main spar notch glued either side dihedral joint shown form cutout aileron servo piece scrap 1/16 balsa sheet between forms box Another piece scrap box trailing edge center completes structure sheeting Notice center sheeting between spars sheet bottom wing between R2s form box aileron servo Add 3/16 balsa gussets tip ribs wing ready finish sanding ailerons cut 3/16 balsa sheet sanded shape sanding block cut 1 tip bevel leading edges cut-offs glue wing tip trailing edges raised 1/16 gives washout wing tips Epoxy aileron hardware trailing edge shown original 1/16 ID brass tubing 1/16 wire bent form torque rod horn sure relieve trailing edge its back-up block allow movement aileron horns exit tubing Notch groove ailerons receive torque rods Install just prior covering Stabilizer Fin Rudder tail group built over plans thing re member add spar doublers before solid center section diagonal braces building stabilizer rudder elevator cut 3/16 sheet balsa pinned respective fixed surface final sanding usually apply good shot Hot Stuff location horns movable surface toughen up wood Completion parts sanded well 150 grit sandpaper Round edges fuselage except wing mount leading edges wing stabilizer fin rounded off well trailing edges elevator rudder piece l covered sandpaper excellent tool smooth inside gussets cabin wing tips think finished sand everything again 220 grit sandpaper Balance wing Use piece c wire fulcrum center wing use heaviest aileron side lightest wing panel still doesnt balance add weight light tip main spar can drilled tip accept whatever weight necessary plane should covered plas tic film like MonoKote use form hinges well Start rud der fin Iron 3/8-wide strip over trailing edge fin another strip same size over leading edge rudder strip should lap about / either side edges hinges made ironing 1/16 glue sides two pieces 1 MonoKote together form piece 1 15/16 glue side up half glue side down other half Two make hinge two hinges rudder four ele vator five ailerons hinge rudder fin iron hinge half top bottom side rudder turn over iron other two halves just inboard first ones joint hinge halves should fall right center rudder leading edge Bring rudder fin together crisscross hinges side rudder opposite side fin hold fin rudder position iron hinges fin both sides makes close strong hinge Cover fin rudder normal way hinge line fore aft procedure followed elevator well ailerons ailerons hinged torque rod epoxied aileron same time joined wing hinges will hold alignment until epoxy sets Epoxy tip plates wing after have covered Cut away covering tip plates contact wing tip After fuselage covered glue l wing holddowns Using polyurethane paint match trim paint firewall over lapping MonoKote little seal edges joints Black MonoKote stripped 1/16 wide makes good pin stripes between colors used trim Install engine mount 4-40 X bolts drilled accept engine hole drilled down through back part mount nose gear shown Bend main gear 3/32 music wire shape shown plans install plywood landing gear mount bottom fuselage metal landing gear mounting strips small wood screws screws cut off point does stick through plywood cabin Use epoxy holes fore screwing last time Bend nose gear music wire Instail wheel collar just above coil bear bottom engine mount Solder collar gear Another wheel collar top secures gear Mount steering arm above top collar engage piece 040 music wirefrom rudder servo through inner nyrod top left side fuselage mount servos plywood trays small wood screws trays Hot Stuffed fuselage sides proper place bring CG alignment Install aileron servo wood screws small plywood pads Hot-Stuffed top 3/16 balsa risers front back servo cut-out bottom wing servo should fit far down cut-out possible Hook up ailerons ele vator rudder install engine prop lets go Hying Range check before test flying radio installation different take few extra minutes check make sure ai lerons hooked up correctly CG should just under main spar should no noticeable warps wing tail Set control surfaces neutral ailerons flat bottom wing trim levers middle range Start engine set idle check control movements high low throttle taxi around runway min ute two get feel rudder throttle head wind go Misfit requires guidance Wherever leave will remain air plane called neutral stability As ability will complete slow roll straight up before running out steam loops can big round pattern style little button hooks Inverted flight easy little forward push elevator trim lever knife-edge flight dont use full aileron rudder wont hold Instead use full rudder fly ailerons Snaps spins require full elevator full rudder full aileron aileron can relaxed after spin initiated recovery rapid neu tralized controls Landings gentle since ailerons solid well stall wing tips have no tendency fall off fact Misfit can flown full up 100 Model Aviation elevator just enough throttle remain airborne still answer ailerons good 20 will enhance vertical per formance other worth trouble See later Im going flitting RC Scale Wischers continued page 25 didnt crash takeoff surest way us convince other modelers try hands scale prevent ac cidents being well practiced other planes before attempting flights scale models often heard excuse scale planes hard fly easily damaged crashed no longer valid Scale Wheels avid scale buffs have making own tires complete side-wall lettering number years first saw Toledo DeHavilland Hornet built Dario Bris ighella displayed machined mold ing dies used form tires silicone rubber Woodvale World Champion ships first-place winning Fournier Mick Reeves also hand-made tire its single landing wheel complete legible lettering side walls Mick used silicone rubber rather thick section support weight lettering scale size quite small therefore difficult engrave mold ing die example exten sive effort required world class model effect rule states FAI contest entrant must make declaration items used plane made builder planes wheels tires appear list parts quite often parts purchased FAI Precision Scale possible detail made builder Robart now producing Universal Scale Wheels lettering side walls Hubs molded high strength Lexan Tires low rebound thermoplas tic rubber Continental Deutsches Fabrikat 690 side wingfoot insignia Goodyear Weather 32 X 8 Airplane other side using wheels have found necessary maximum realism remove gloss tire material happens naturally age user may wish hasten process buffing fine sandpaper rubbing very gently cloth moistened dope thinner Robart now furnishes instructions three alternative methods inflating tires withstand load heavier scale models include use dry ice Alka Seltzer pressurizing agents Also described old method refrigerat ing wheel cause contraction air sealing screws loosened screws rapidly tightened trapped air expands room temperature pressurize tire hub discs furnished Robart can modified closely resemble pro totype wheels reworking center disc can removed drill ing filing leave rim new disc plywood styrene plastic epoxied back give depth hub disc Small bits tubing hex screw heads epoxied place ideal use new Hobbypoxy Thixotropic Epoxy Glue stays put applied does run discs painted dull aluminum Floquil resemble wheel castings prototype appearance improvement worthwhile Sport Scale plane detail can seen distance problem have Robart tires flat spot occurs tires model stands position prolonged period solved mak ing balsa stand support plane axles remove load tires flat spot difficult remove model will bounce unrealistically taxiing flats persist Pressurizing helps round out flattened tire Another method suggested Mike Gretz stuff Robart tires firm poly foam preference frequent inflation have also used two sets wheels dis play other flying display tires stuffed balsa discs cut seg ments easy assembly would suitable flying very hard would absorb no landing shock Flap Effectiveness use flaps pro totype airplanes has become common almost model modern plane will likely use seems no agreement between modelers ef fect takeoff landing expe rience no surprise between similar planes effect flaps hard predict until plane flown plane complete disappointment seem have no effect whatever another plane definitely slowed flaps applied Very likely good explanation variation lack aerodynamic knowledge ob scures reason increase lift drag flaps lowered model flying near cruising speed crease lift will cause momentary climb ballooning same time ad ditional drag will slow plane cause steepening glide angle steeper angle modeler attempting spot landing advantage makes point touch-down predictable some planes additional effect increase stability flaps lowered plane seems find groove undisturbed wind conditions Having slowed drag controls become less effective small stick movements have less effect glide path Most advantages flaps fullscale planes small consequence model especially true flaps used takeoff no good reason increase drag models require increase lift except four-engine 120-pound monsters marginal power have seen recently addition flaps actu ating mechanism servo adds large amount weight model could very well nullify benefits derived use trim change flaps lowered could source problems time least appreciated especially true contest judges ask December 1978 101 AM Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST R/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-RAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Mode4 Co Inc US ftte 1& North St Topsfjeld Mass 01983 887-8541 Support AMA Price $3995 kit per dollar bar em all