Converting RC Electric Chipmunk to Gas Power

The Chipmunk sharp looking plane kit can converted electric gas engine powerwith modest effort perfromance sensational guided skilled pilot Step step instructions conversion provided pictures text MENTION word Chipmunk gather ing air-minded people will immediate ly Stir up visions Art Scholl doing worldfamous aerobatics routine some large air show What modeler among us hasnt imagined himself controls colorful aircraft trailing huge plumes red blue smoke majestically arching through precision loops Cuban eights whipping out snap rolls heading followed absolutely perfect eight-point rolls myriad other breathtak ing maneuvers too numerous mentionuntil finally perform show-stopping grand finale Lomcevack leaves crowd gasping disbelief tumble nose-over-tail through own smoke Few modelers have left show like vowing himself Someday rm going build RC Chipmunk can things story isnt about Art Scholls Chipmunk dont have much building appealing great modelers days get air Its about Kraft allfoam two-channel electric Chipmunk re cently has ofeered mail order firms very attractive price first saw model advertised began think what could four channels hot lightweight 049 09 engine up frontinverted lovely deep in-line cowl ing seemed quick inexpensive way try long-time dream getting controls Chipmunkand Upon opening kit box became apparent ideas converting electric giow werent going bad main problems engine/tank installation modi fying wing hacking accept ailerons already have Kraft electric Chipmunk planning get wish 72 Model Aviation lu osIc IraTt iecsric nipmun KIT neore moos nuie rio cus singernamus nejore DC qinning work foam dents easily Author converted TD 09 powerreally hot flier iiy engine mount ready epoxy piace Anchor blind nuts Hot Stuff Jet convert have done study photos instructions until can visualize whole task proper steps will rewarded eye-catching super aerobatics model minimum time investment first item gather together hardware items necessary complete con version Almost modeler will have hand 1 Engine Any Cox TD 049 09 will plenty power Medallion will suffice Cox Black Widow would also work well would require different mounting system 2 Fuel Tank used Sullivan SS-3 2-oz tank has about 6 mm capacity TD 09 fits beautifully equipment tray opening firewall 3 Miscellaneous Pactra Formula U paint aviation yellow either jar spray can 1/16-in dia music wire 3-ft long 1/16-in inside diameter brass aluminum tubing 12-in length x 2 birch 5-ply plywood 4-40 blind nuts 4 Hobbypoxy Formula 2 Hobbypoxy Formula 4 1/16-in inside diameter flanged eyelets 4 1/16-in inside diameter wheel collars 4 4-40 x -in screws aileron control horns 2 -in Scotch Transparent Magic Mending Tape Two Goldberg self-threading horn brackets strip aileron horn set Optional pair Ace 1-in wheels stock *WHl5 Servo mount ing tape Scuff Guard wing tips Hot Stuff Super T Performing Conversion Remove electric motor liberally coat entire inside fuselage Len electric motor installed kit Right Authors conversion Cox TO 09 Throttie muttler added atterwards conversion witn engine 049 10 will give gobs snappy performance Inverted cowling works out nicely July 1981 73 Fuselage equipment trayplenty room size airborne unit Use servo mounting tray recommended choose route Airborne equipment ready install fuselage Hold place double-faced stickytape white glue Use serve tape servos Battery cant go anywhere wing place Left rig drilling wing fortorque rods Tubing 1/16-in inside diameter taped wing guide Intothe tubing goes 1/16-in wire has flattened sharpened end Right sharpened wire rotated fingers achieve drill action area firewall wing mount Hobbypoxy Formula 2 Carefully apply Hobbypoxy front firewall around outside edges keep fuel seeping behind softening foam Study photo should have no problem steerable tail wheel used 1/16in ID eyelets top bottom pushed fuselage piece brass aluminum tubing way through would work well also Put drop epoxy under flange eyelet After have bent wire leg epoxied bottom rudder slip tall wheel wire through eyelet bearings tighten wheel collar against bottom fuselage Grasp wheel collar tightly pliers finish bending tail wheel wire approximate rearward rake shown photo Use tail wheel supplied plane secure wheel collar Glue rudder leg bottom rudder 5-mm epoxy paint yellow servo/equipment tray cut out front wall section accommodate type tank using round tank should also work OK Notice used forward compartment receiver thus allowing room upright third servo throttle just forward rudder elevator servos Remove little foam bottom tray get flat mounting surface may notice time would have scads room fuselage equipment trayenough larger servos mountedjust about equipment wish However servo mounting tray recommended Also receiver batteries fuel tank should wrapped foam rubber Coat bottom sides servo recesses Continued page 136 74 Model Aviation Steerable tail wheel details become clear shot Eyelets glued fuselage top bottom through 1/16-in wire slipped Wheel collar bottom keeps pressure off rudder Aileron torque rod installation 4-40 screw 1/16-in wheel collar File flat end torque rod screw seat Adjust throw screwing horn bracket up down Only small throw needed Finished flying its spendor TD 09 really hauls Vertical rolling climb-outs spectacular TD 049s also would good jobadd nose weight necessary proper CG looking tiny cracks discolorations run perpendicular grain wood defects called compression cracks occur tree falls across another ground areas weaker un damaged wood wing spar cut sheet may break compression cracks Can test wood somehow Go head class Photo 1 shows piece spar wood being tested stiffness stand left holds balsa strip given height above table top scale set end balsa strip weight hung strip amount deflection caused weight can measured course absolute measurement identical testing must performed candidate strip results compared can judge stiffness spars cut various sheets balsa After awhile get feel what required both strength standpoint stiff ness standpoint Note test does locate stress points soft points wood compression cracks may have over looked find type defect cut test strip balsa sheet appears best Hold strip ends force bow deep curve Soft areas wood will show up strip bends smaller radius will snap compression cracks created stress point nicking wood cut strip will fail stress point can make tester Photo 2 shows closeup clamp holds strip testing clamp tiny dolls clothespin glued stand look closely can see thin strip wood -in long has glued inside clamp jaw strip avoids damage strip being tested spread ing clamp force over wide area being soft balsa strip bottom clamp inset level top bar also supports strip Photo 3 shows closeup scale cheap plastic ruler has darkened top graduation marks marker pen Note ruler molded calibration marks higher surrounding plastic An engraved ruler would have sunken marks can filled similar marker material highlighted strip glued balsa strip tight slide fit groove built up thin balsa strips Another use tester Note tester shown Figure 1 can also used match prop half-spars deflection same major bend axis prop will likely flare equally under high torque Without equal flare prop will wobble under high torque waste some energy motor Test halfspar several weights hung two three points along spar compare results Take enough time make good records compare future prop spars ones stiff ness Such careful testing essential being able build props either very similar vary widely enough give choice different flares different conditions Bud Tenny P 0 Box 545 Richardson TX 75080 Chipmunk Mods/Petro Continued page 74 equipment tray compartment fuel tank 5-mm epoxy provides good bonding surface adhering servos receiver fuel tank recesses thin servo mounting tape Study pictures see engine mount fitted will have bit cut try eyeball engineering call Use sand paper bevel outside edges engine mount close fit inside walls electric motor mount will assure good tight joint epoxied permanently place Fit mount about two degrees downthrust degree right thrust Care getting offset will result better flying ship lot less trim problem Install blind nuts mount proper place inverting engine little tip coat entire mount Hot Stuff Super T drill holes mounting screws blind nuts Coat insides drilled holes will have fuel-proof mount drop Hot Stuff around flanges blind nuts will keep pushing out Screw engine onto mount insert position Check see plastic needs removed front moulded motor mount may take little trimming crankshaft housing have clearance Remove engine mount liberally coat front sides mount Hobbypoxy Formula 2 install mount final position previously should have roughened inside surface moulded plastic mount better epoxy adhesion As epoxy curing make certain proper thrust offset maintained Wing Ailerons absolute must model because designed fly rudder does very well would shame come far enjoy benefits ailerons slick axial rolls impres sive reverse Cuban eights Heres UC OLD THE NEW FIREBALL GLOW PLUGS ARE LEAKPROOF AND BLOWOUT PROOF EVEN FOR THE NEW MONSTER ENGINES BUT THEY ARE STILL THE OLD PRICE OF $170 WRITE NOW! SWANSON PO Box 151 WayneNA 07470 136 Model Aviation Cuts Coverite & Monokote better other longer blade Lasts much CURVED PROTECTCOVER &TABLETLETSYOU TRIMITIN YOUR POCKET COVERITE 420 Babylon Rd Horsham Pa100 Using sharp blade cut ailerons wings Sand bevel leading edge ailerons enable 25- 30-degree downward deflection ailerons hinged top Sand exposed foam wing 220-grit wet-or-dry also Paint exposed foam Pactra Formula U aileron torsion rods bit tricky Study photos see 1/16-in ID tubing used guide drill hole through wing torsion rodfrom aileron cutout center section Use some eyeball engineering align tubing angle will guide wire drill should come out wing root section Tape tubing place low-stick drafting tape wont pull paint off foam Flatten end 1/16-in music wire rod sharpen flattened end After passing wire through tubing slowly feed wire foam wing rotating back forth between thumb forefinger should start wire close possible top surface wing order get aligned aileron hinge pivot point must have patience point dont hurry wire drill could bend under pressure run Out top bottom wing does happen go back start another angle thats what works Once have torque-rod holes finish aileron hookup like photos indicate using wheel collars base torque rods 4-40 x -in screws installed place set screws serve double duty now set screws adjustable-throw control arms self-threading horn brackets allow quite range throw after few flights settled -in travel both up down complete Ace Silver Seven transmitter exponential throw will adjust travel have better response slow landing speeds outer ends torque rods should bent back right angles about -in long arms permitted slide freely inside short piece 1/16-in ID tubing epoxied inboard end aileron torque rod arm epoxied directly aileron wasnt exactly line pivot point would bind put undue loads servo plus reduce thrctw method allows removal aileron wing repair reasons also permits tape hinges installed properly Use Mylar adhesive tape Scotch brand otherwise aileron hinges Pin aileron place apply single strip tape entire lengthhalf width covering aileron half covering wing Fold aileron back way against top wing hold place pins drafting tape Apply another length Mylar tape exposed leading edge aileron exposed face wing Trim off excess tape remove pins have very slick gapless hinge hinges may seem little stiff very little throw required because efficient Slip short piece tubing over arm torque rod carefully epoxy tubing against butt end aileronafter scraping out slight half-round depression aileron tubing set will notice torque rod slides within tubing rod rotated position aileron servo may depend high rudder elevator servos stick up above equipment mounting tray mount off side made somewhat unusual installation Otherwise todays smaller servos believe horn arms No other prop pulls biggie like THRUST RANDYS UNIFLOW STUNT TANKS PROF LE*COMBAT* RAT* WIDE & NARROW WEDGE 2-- 6 oz Capacities Standard vent available CUSTOM BLEND FUEL 5--40%Nitro Send 25cents specs CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 could center wing Whichever way scrape flat surface foam servo mount onto Again coat epoxy good surface adherence servo mounting tape wing finished youve applied strips Scuff Guard underside wing tips Fix equipment tray firmly place either white glue tape pushrods installed per kits instruction book after stabilizer glued place way glue really grabs careful get stab properly positioned first time Slip fuel tank Position way forward adjust pickup tubing length shape give smooth curve fuel line tank engine breather line can long piece fuel tubing just exits out rear bottom cowl glow plug could have access through hole cowling Now experience frill motor potential Dynathrusts 100% accurate pitch airfoil Costs less buy fly because its unequaled durability 15 6 pitch $ 700 18 6 8 pitch $1000 20 8 10 pitch $1400 Prices include UPS charges MC 0 VISA C C0D 0 CHECK 0 MO See dealer order direct INC 2541 NE 11th Court Pompano Beach Florida 33062 1-305-941-9119 Dealer Inquiries Invited IR0bb H0~ kehbv pecal OLD TIllER KITS Full Partial Kits 4Ks Models--Full Kits--Gas Rubber 1940 Baby Buszard Bombshell 36 020$1395 1941 Lambs climber 44 Span Rubber$1495 1939 Korda Wakefield 44 Rubber cabin$14 9S 3 & R Modela-Full Kits- 020 Replica 1942 Brooklyn Dodger 32 span$1295 1940 So Long 32 Span$1295 Tyro Models--Full Kit--iA TEXACO RIC 1930 Bay Ridge Mike 48* 049099$2095 P & W Semi-Kits--Rib Tip Foroer Kits 1937 Dallalre Sportster-108 Span Plan Ext$2600 Companion Stripwood Kit tlallaire--$3000 1940 Sailplane Comet--70 Wing Plan Ext $4750 Companion Stripmood Kit Sailplane--$26 36 Plans Dallaire$5 00 Sailplane Wing$3 001 Midway Model Co --Full Partial Kits Rib Tip & Former Kits--Machine Cut Parts 1920 Flying Quaker 84 cabin Plan IncI $2150 1937 Quaker Flash 67 Cabin Plan md $1750 1937 Long Cabin 70 Plan Extra$500 $1500 Replica Old Tbsers 020 Gas Electric 1940 Buzzard Bombshell 30 span PP $1195 1940 Scientific Mercury 36 FF 1ChR/C $1395 1941 Request 30 Span PP $1295 Old Time B/c Sport--Pull Kits--2-3 Ch B/C 1938 Powerhouse 50 10 15 engines $3598 1939 Air Trails Sportater 50 10 15 cog $3590 BOOKS ON OLD TIMER MODELS rIEW-1934 Zaic Year Book $550 Antique Old Timer Model Air Craft $1000 Air Age Gas Models MAN Requints $395 FREE PLIGHT KITS Sport Scale Sparkey Comet pan Old Time Rubber $440 Maverick B/N 36 Span Coupe Rubber $1346 Lacy 5110 Peck Peanut 5cale $446 Satellite 450 4Ks 56 Span 1530 eng $2595 iLECTRIC SYSTEMS AND KITS Astro 05 System Wired $5995 [SPECIAL55 $47 96] Astro 15 System Wired $tts9StSPECOAL5 $9596] Astro Sport Kit 05 23 Cb B/C $2120 Quiet Revolution Book $595SPECIALC$500] Shipping Handling 50 Page CATALOGUE up ro $800 add $150 $100 PP copy will $601 $2000 add $225 sent free upon $2001 $0500 add $100 request order] $0501 $7000 add $350 Hobby Horn aver $7000 add $400 PO Box 1009 CA Addressees add 6% Seal Beach Ca 90740 Sales Tax Send MO CR 714 690-6223Best Visa/MC #EXP mornings recordcr--l COD-Exact Chg$ltO Hdl activates 5 rngsI July 1981 137 preferred leave Cox gb-head clip snapped Onto head two wires threaded through two holes leading out cowling bottom rear bare wire left ends attaching starting battery alligator clips 250 mAh battery pack just right space left just behind tank Push foam rubber around tank absorb fuel exhaust residue conversion now completed IF model does balance farther back leading edge sheeting line contacts ribs balance point least far forward add weight until fact first flights would better have balance point bit forward instructions kit electric motor installation state balance point should no two inches behind wing leading edgewhich good safe Flying surprisea pleasant might add plane weighed 23 oz light standards craft size means model going lively smaller engines real zinger larger mills take off ground ready apply right rudder immediately isnt critical hand laVnch ready give some down trim after initial launch because bird will climb right out will handle very nicelybut quicklywhen little no wind preferred kind weather plane Rolls need touch forward elevator stick plane gets near inverted point Inverted flight isnt impossible wants roll out due dihedral can held combo ailerons rudder Basic maneuvers such stall turn Immelmann Cuban eight loop split S roll done little effort warned dont take eyes off wont look back beginners plane converted fine fun ship Editors Note conversion Electric Chipmunk gas engine power appeals perhaps dont want become involved doing modest amount conversion work suggest check MRCs DeHavilland Chipmunk MRC Chipmunk readytofly three channels Enya O9TV engineand includes four channel aileron conversion kit 3 Convertlbtol AVAILABLE NOW Wnco UFF 7 90Bipe $2395 JB 5poiI MK III 84 Mono 78 Bipe Weigh 18 iSo2195 Tooi Air 2000 105 Clossic Scoin SipIeee 23 lbs 2295 Tinsel Air 4000 99 Rediel Eng Cleoso Sipe 23 los 2295 Fokker D-VII 88 Oeoee WV' Fighie Bipe 23 lbs2495 coe5ng Soon Sopooih Pop 80 Bpe Sopso, Topehonod 80 TopIeee Weco 510 Lyjeck Vecoon 90 RipIeee Nieopoo 11 Rebe 85 Splone 35 ScoPe Fokke DSl 72 TopIeee Plans shopped UPS Parcel Post Please add $300 postage handliopq fastest service send postni money order No C 00 orders sent BEHRENS PLAN SERVICE 31-27 Healy Ave Far Rockaway NY 11691 in212 337-6987 NEW 6jQLT pgOP IU8 Quadra McCulloch Super Hustler new prop hub will fit above engines ones 5/1 6-24 shaft Bolt plateserves drill jig tapped spinner bolt Only $1995ROUSH MFG Dealer ributorP0 Box 251 innoiries WelcomeBenelv,iIle Akin 4671 138 Model Aviation starting point Later want touchy response can easily move balance point rearward THE POTENT PEOPLE NOW OFFER POTENT ROG 12 SPAN $ 300 POTENT 10 SPAN READY TO PLY 500 POTENT 30 P30 CHAMP KIT1000 ULTRA 30 COUPE HI PERFORMANCE COMPLETE KIT AND PROP 0 REID HULL OLD TIMER MULVIHILL COMPLETE KIT AND PROP 0 POTENT TYRO BEGINNERS GAS MODEL CRASH RESISTENT DESIGN EASY ASSEMBLY 020 POWER KIT . 1500 SEND 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The Chipmunk sharp looking plane kit can converted electric gas engine powerwith modest effort perfromance sensational guided skilled pilot Step step instructions conversion provided pictures text MENTION word Chipmunk gather ing air-minded people will immediate ly Stir up visions Art Scholl doing worldfamous aerobatics routine some large air show What modeler among us hasnt imagined himself controls colorful aircraft trailing huge plumes red blue smoke majestically arching through precision loops Cuban eights whipping out snap rolls heading followed absolutely perfect eight-point rolls myriad other breathtak ing maneuvers too numerous mentionuntil finally perform show-stopping grand finale Lomcevack leaves crowd gasping disbelief tumble nose-over-tail through own smoke Few modelers have left show like vowing himself Someday rm going build RC Chipmunk can things story isnt about Art Scholls Chipmunk dont have much building appealing great modelers days get air Its about Kraft allfoam two-channel electric Chipmunk re cently has ofeered mail order firms very attractive price first saw model advertised began think what could four channels hot lightweight 049 09 engine up frontinverted lovely deep in-line cowl ing seemed quick inexpensive way try long-time dream getting controls Chipmunkand Upon opening kit box became apparent ideas converting electric giow werent going bad main problems engine/tank installation modi fying wing hacking accept ailerons already have Kraft electric Chipmunk planning get wish 72 Model Aviation lu osIc IraTt iecsric nipmun KIT neore moos nuie rio cus singernamus nejore DC qinning work foam dents easily Author converted TD 09 powerreally hot flier iiy engine mount ready epoxy piace Anchor blind nuts Hot Stuff Jet convert have done study photos instructions until can visualize whole task proper steps will rewarded eye-catching super aerobatics model minimum time investment first item gather together hardware items necessary complete con version Almost modeler will have hand 1 Engine Any Cox TD 049 09 will plenty power Medallion will suffice Cox Black Widow would also work well would require different mounting system 2 Fuel Tank used Sullivan SS-3 2-oz tank has about 6 mm capacity TD 09 fits beautifully equipment tray opening firewall 3 Miscellaneous Pactra Formula U paint aviation yellow either jar spray can 1/16-in dia music wire 3-ft long 1/16-in inside diameter brass aluminum tubing 12-in length x 2 birch 5-ply plywood 4-40 blind nuts 4 Hobbypoxy Formula 2 Hobbypoxy Formula 4 1/16-in inside diameter flanged eyelets 4 1/16-in inside diameter wheel collars 4 4-40 x -in screws aileron control horns 2 -in Scotch Transparent Magic Mending Tape Two Goldberg self-threading horn brackets strip aileron horn set Optional pair Ace 1-in wheels stock *WHl5 Servo mount ing tape Scuff Guard wing tips Hot Stuff Super T Performing Conversion Remove electric motor liberally coat entire inside fuselage Len electric motor installed kit Right Authors conversion Cox TO 09 Throttie muttler added atterwards conversion witn engine 049 10 will give gobs snappy performance Inverted cowling works out nicely July 1981 73 Fuselage equipment trayplenty room size airborne unit Use servo mounting tray recommended choose route Airborne equipment ready install fuselage Hold place double-faced stickytape white glue Use serve tape servos Battery cant go anywhere wing place Left rig drilling wing fortorque rods Tubing 1/16-in inside diameter taped wing guide Intothe tubing goes 1/16-in wire has flattened sharpened end Right sharpened wire rotated fingers achieve drill action area firewall wing mount Hobbypoxy Formula 2 Carefully apply Hobbypoxy front firewall around outside edges keep fuel seeping behind softening foam Study photo should have no problem steerable tail wheel used 1/16in ID eyelets top bottom pushed fuselage piece brass aluminum tubing way through would work well also Put drop epoxy under flange eyelet After have bent wire leg epoxied bottom rudder slip tall wheel wire through eyelet bearings tighten wheel collar against bottom fuselage Grasp wheel collar tightly pliers finish bending tail wheel wire approximate rearward rake shown photo Use tail wheel supplied plane secure wheel collar Glue rudder leg bottom rudder 5-mm epoxy paint yellow servo/equipment tray cut out front wall section accommodate type tank using round tank should also work OK Notice used forward compartment receiver thus allowing room upright third servo throttle just forward rudder elevator servos Remove little foam bottom tray get flat mounting surface may notice time would have scads room fuselage equipment trayenough larger servos mountedjust about equipment wish However servo mounting tray recommended Also receiver batteries fuel tank should wrapped foam rubber Coat bottom sides servo recesses Continued page 136 74 Model Aviation Steerable tail wheel details become clear shot Eyelets glued fuselage top bottom through 1/16-in wire slipped Wheel collar bottom keeps pressure off rudder Aileron torque rod installation 4-40 screw 1/16-in wheel collar File flat end torque rod screw seat Adjust throw screwing horn bracket up down Only small throw needed Finished flying its spendor TD 09 really hauls Vertical rolling climb-outs spectacular TD 049s also would good jobadd nose weight necessary proper CG looking tiny cracks discolorations run perpendicular grain wood defects called compression cracks occur tree falls across another ground areas weaker un damaged wood wing spar cut sheet may break compression cracks Can test wood somehow Go head class Photo 1 shows piece spar wood being tested stiffness stand left holds balsa strip given height above table top scale set end balsa strip weight hung strip amount deflection caused weight can measured course absolute measurement identical testing must performed candidate strip results compared can judge stiffness spars cut various sheets balsa After awhile get feel what required both strength standpoint stiff ness standpoint Note test does locate stress points soft points wood compression cracks may have over looked find type defect cut test strip balsa sheet appears best Hold strip ends force bow deep curve Soft areas wood will show up strip bends smaller radius will snap compression cracks created stress point nicking wood cut strip will fail stress point can make tester Photo 2 shows closeup clamp holds strip testing clamp tiny dolls clothespin glued stand look closely can see thin strip wood -in long has glued inside clamp jaw strip avoids damage strip being tested spread ing clamp force over wide area being soft balsa strip bottom clamp inset level top bar also supports strip Photo 3 shows closeup scale cheap plastic ruler has darkened top graduation marks marker pen Note ruler molded calibration marks higher surrounding plastic An engraved ruler would have sunken marks can filled similar marker material highlighted strip glued balsa strip tight slide fit groove built up thin balsa strips Another use tester Note tester shown Figure 1 can also used match prop half-spars deflection same major bend axis prop will likely flare equally under high torque Without equal flare prop will wobble under high torque waste some energy motor Test halfspar several weights hung two three points along spar compare results Take enough time make good records compare future prop spars ones stiff ness Such careful testing essential being able build props either very similar vary widely enough give choice different flares different conditions Bud Tenny P 0 Box 545 Richardson TX 75080 Chipmunk Mods/Petro Continued page 74 equipment tray compartment fuel tank 5-mm epoxy provides good bonding surface adhering servos receiver fuel tank recesses thin servo mounting tape Study pictures see engine mount fitted will have bit cut try eyeball engineering call Use sand paper bevel outside edges engine mount close fit inside walls electric motor mount will assure good tight joint epoxied permanently place Fit mount about two degrees downthrust degree right thrust Care getting offset will result better flying ship lot less trim problem Install blind nuts mount proper place inverting engine little tip coat entire mount Hot Stuff Super T drill holes mounting screws blind nuts Coat insides drilled holes will have fuel-proof mount drop Hot Stuff around flanges blind nuts will keep pushing out Screw engine onto mount insert position Check see plastic needs removed front moulded motor mount may take little trimming crankshaft housing have clearance Remove engine mount liberally coat front sides mount Hobbypoxy Formula 2 install mount final position previously should have roughened inside surface moulded plastic mount better epoxy adhesion As epoxy curing make certain proper thrust offset maintained Wing Ailerons absolute must model because designed fly rudder does very well would shame come far enjoy benefits ailerons slick axial rolls impres sive reverse Cuban eights Heres UC OLD THE NEW FIREBALL GLOW PLUGS ARE LEAKPROOF AND BLOWOUT PROOF EVEN FOR THE NEW MONSTER ENGINES BUT THEY ARE STILL THE OLD PRICE OF $170 WRITE NOW! SWANSON PO Box 151 WayneNA 07470 136 Model Aviation Cuts Coverite & Monokote better other longer blade Lasts much CURVED PROTECTCOVER &TABLETLETSYOU TRIMITIN YOUR POCKET COVERITE 420 Babylon Rd Horsham Pa100 Using sharp blade cut ailerons wings Sand bevel leading edge ailerons enable 25- 30-degree downward deflection ailerons hinged top Sand exposed foam wing 220-grit wet-or-dry also Paint exposed foam Pactra Formula U aileron torsion rods bit tricky Study photos see 1/16-in ID tubing used guide drill hole through wing torsion rodfrom aileron cutout center section Use some eyeball engineering align tubing angle will guide wire drill should come out wing root section Tape tubing place low-stick drafting tape wont pull paint off foam Flatten end 1/16-in music wire rod sharpen flattened end After passing wire through tubing slowly feed wire foam wing rotating back forth between thumb forefinger should start wire close possible top surface wing order get aligned aileron hinge pivot point must have patience point dont hurry wire drill could bend under pressure run Out top bottom wing does happen go back start another angle thats what works Once have torque-rod holes finish aileron hookup like photos indicate using wheel collars base torque rods 4-40 x -in screws installed place set screws serve double duty now set screws adjustable-throw control arms self-threading horn brackets allow quite range throw after few flights settled -in travel both up down complete Ace Silver Seven transmitter exponential throw will adjust travel have better response slow landing speeds outer ends torque rods should bent back right angles about -in long arms permitted slide freely inside short piece 1/16-in ID tubing epoxied inboard end aileron torque rod arm epoxied directly aileron wasnt exactly line pivot point would bind put undue loads servo plus reduce thrctw method allows removal aileron wing repair reasons also permits tape hinges installed properly Use Mylar adhesive tape Scotch brand otherwise aileron hinges Pin aileron place apply single strip tape entire lengthhalf width covering aileron half covering wing Fold aileron back way against top wing hold place pins drafting tape Apply another length Mylar tape exposed leading edge aileron exposed face wing Trim off excess tape remove pins have very slick gapless hinge hinges may seem little stiff very little throw required because efficient Slip short piece tubing over arm torque rod carefully epoxy tubing against butt end aileronafter scraping out slight half-round depression aileron tubing set will notice torque rod slides within tubing rod rotated position aileron servo may depend high rudder elevator servos stick up above equipment mounting tray mount off side made somewhat unusual installation Otherwise todays smaller servos believe horn arms No other prop pulls biggie like THRUST RANDYS UNIFLOW STUNT TANKS PROF LE*COMBAT* RAT* WIDE & NARROW WEDGE 2-- 6 oz Capacities Standard vent available CUSTOM BLEND FUEL 5--40%Nitro Send 25cents specs CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 could center wing Whichever way scrape flat surface foam servo mount onto Again coat epoxy good surface adherence servo mounting tape wing finished youve applied strips Scuff Guard underside wing tips Fix equipment tray firmly place either white glue tape pushrods installed per kits instruction book after stabilizer glued place way glue really grabs careful get stab properly positioned first time Slip fuel tank Position way forward adjust pickup tubing length shape give smooth curve fuel line tank engine breather line can long piece fuel tubing just exits out rear bottom cowl glow plug could have access through hole cowling Now experience frill motor potential Dynathrusts 100% accurate pitch airfoil Costs less buy fly because its unequaled durability 15 6 pitch $ 700 18 6 8 pitch $1000 20 8 10 pitch $1400 Prices include UPS charges MC 0 VISA C C0D 0 CHECK 0 MO See dealer order direct INC 2541 NE 11th Court Pompano Beach Florida 33062 1-305-941-9119 Dealer Inquiries Invited IR0bb H0~ kehbv pecal OLD TIllER KITS Full Partial Kits 4Ks Models--Full Kits--Gas Rubber 1940 Baby Buszard Bombshell 36 020$1395 1941 Lambs climber 44 Span Rubber$1495 1939 Korda Wakefield 44 Rubber cabin$14 9S 3 & R Modela-Full Kits- 020 Replica 1942 Brooklyn Dodger 32 span$1295 1940 So Long 32 Span$1295 Tyro Models--Full Kit--iA TEXACO RIC 1930 Bay Ridge Mike 48* 049099$2095 P & W Semi-Kits--Rib Tip Foroer Kits 1937 Dallalre Sportster-108 Span Plan Ext$2600 Companion Stripwood Kit tlallaire--$3000 1940 Sailplane Comet--70 Wing Plan Ext $4750 Companion Stripmood Kit Sailplane--$26 36 Plans Dallaire$5 00 Sailplane Wing$3 001 Midway Model Co --Full Partial Kits Rib Tip & Former Kits--Machine Cut Parts 1920 Flying Quaker 84 cabin Plan IncI $2150 1937 Quaker Flash 67 Cabin Plan md $1750 1937 Long Cabin 70 Plan Extra$500 $1500 Replica Old Tbsers 020 Gas Electric 1940 Buzzard Bombshell 30 span PP $1195 1940 Scientific Mercury 36 FF 1ChR/C $1395 1941 Request 30 Span PP $1295 Old Time B/c Sport--Pull Kits--2-3 Ch B/C 1938 Powerhouse 50 10 15 engines $3598 1939 Air Trails Sportater 50 10 15 cog $3590 BOOKS ON OLD TIMER MODELS rIEW-1934 Zaic Year Book $550 Antique Old Timer Model Air Craft $1000 Air Age Gas Models MAN Requints $395 FREE PLIGHT KITS Sport Scale Sparkey Comet pan Old Time Rubber $440 Maverick B/N 36 Span Coupe Rubber $1346 Lacy 5110 Peck Peanut 5cale $446 Satellite 450 4Ks 56 Span 1530 eng $2595 iLECTRIC SYSTEMS AND KITS Astro 05 System Wired $5995 [SPECIAL55 $47 96] Astro 15 System Wired $tts9StSPECOAL5 $9596] Astro Sport Kit 05 23 Cb B/C $2120 Quiet Revolution Book $595SPECIALC$500] Shipping Handling 50 Page CATALOGUE up ro $800 add $150 $100 PP copy will $601 $2000 add $225 sent free upon $2001 $0500 add $100 request order] $0501 $7000 add $350 Hobby Horn aver $7000 add $400 PO Box 1009 CA Addressees add 6% Seal Beach Ca 90740 Sales Tax Send MO CR 714 690-6223Best Visa/MC #EXP mornings recordcr--l COD-Exact Chg$ltO Hdl activates 5 rngsI July 1981 137 preferred leave Cox gb-head clip snapped Onto head two wires threaded through two holes leading out cowling bottom rear bare wire left ends attaching starting battery alligator clips 250 mAh battery pack just right space left just behind tank Push foam rubber around tank absorb fuel exhaust residue conversion now completed IF model does balance farther back leading edge sheeting line contacts ribs balance point least far forward add weight until fact first flights would better have balance point bit forward instructions kit electric motor installation state balance point should no two inches behind wing leading edgewhich good safe Flying surprisea pleasant might add plane weighed 23 oz light standards craft size means model going lively smaller engines real zinger larger mills take off ground ready apply right rudder immediately isnt critical hand laVnch ready give some down trim after initial launch because bird will climb right out will handle very nicelybut quicklywhen little no wind preferred kind weather plane Rolls need touch forward elevator stick plane gets near inverted point Inverted flight isnt impossible wants roll out due dihedral can held combo ailerons rudder Basic maneuvers such stall turn Immelmann Cuban eight loop split S roll done little effort warned dont take eyes off wont look back beginners plane converted fine fun ship Editors Note conversion Electric Chipmunk gas engine power appeals perhaps dont want become involved doing modest amount conversion work suggest check MRCs DeHavilland Chipmunk MRC Chipmunk readytofly three channels Enya O9TV engineand includes four channel aileron conversion kit 3 Convertlbtol AVAILABLE NOW Wnco UFF 7 90Bipe $2395 JB 5poiI MK III 84 Mono 78 Bipe Weigh 18 iSo2195 Tooi Air 2000 105 Clossic Scoin SipIeee 23 lbs 2295 Tinsel Air 4000 99 Rediel Eng Cleoso Sipe 23 los 2295 Fokker D-VII 88 Oeoee WV' Fighie Bipe 23 lbs2495 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