The&beli-Ancho Its timely look atyou can build wing correctly shown should have no trouble flyingThe bell upper solutions real planeof rudder Please note struts functionalpart imagined problemsas well facetious Make fromalerts pilot straight-grained white oak aged least modeler hadthree years pot kimchee ded Dutch roll roasted slowly over bowl really hot Tex just wanted toMex chili exactly hour 45except back plane nutes per gram per cm will deliveris straight backward rather forward have fun owna strut makes dynamite struc-Use balsa possible glue parts u etural component also makes prettysecurely bell upper part u 11111 way good substitute dynamite need rudder functional can heard over U 'Scratch' Biltrightto loosen stuck jar lids kitchenthe crashing waves scream Let caution however about usinglittle engine bell also will alert pi AM NEW RC modeling love tothem chopsticks hard chomp andlot dreaded Dutch roll would read Model Aviation comes eachyour whole face could history am acertainly avoid wooden shoe month first thing turn fea-firm believer safety Stuck out onbell also important nomenclature tured model design readersthis rock could weeks before nextpoint view about later illustrated out-of-sight cutawaysupply ship arrives Band-Aid ne power train bit unus drawing Wow thought could thatam very careful timesual perhaps modtoo Maybe noterate climesbut fairly common have worked lighthouse attendant k Trexlerparts stiff breezes needs lot Tierra del Fuego several yearspower penetration So have adapted have tried several forms airplane wheels have 35 lb Ofthe small air compressor war surplus modeling Free Flight Control Line Rubber power Sailplanes Trouble theair pressure forItalian torpedoes have equipped glow plugs dual security chain high winds just blow everything out sea flotation purposesdrive speed reduction unit drop outWhoosh s gonerageous 100000 rpm usable Speaking safety let point out an-range reduce intolerable shock little plane weighsother feature known fact ac-vibration conversion puts out connect cidents involving model airplane propellerthe power output shaft prop 42 lb flies fastoccur outer trips whirling prop enough penetrateFor absolute safety suggest removing theRubberband coupling outer two inches blade breezedangerous portionremoved plane be- engine prop comes very safeeven novice oper- ces otherwise hit idea new planeate Remember ety first knew right track little fuselagestructure straightforward intolerable shock plane designed fly 70-knot winds soand should noproblem experienced ibration heavier planes havemodelers withuncorrected astigmatism seen Model Aviation little Bell-shall say no morehere encouragelength several rubberbands earAnchor weighs 42 lb fuelyou strive forclean neat joints in-her flying days rubber dampens high wing loading resulting fromterest soundstructure absorbs spikes power curve 18-in wingspan flies fast enough to_____________________________________ penetrate breezes off deck wingnicely engine penetrates amazingly Let explain some other features thisOneis mountedwell date have sunk ocean-going rather specialized design maximumlowhightug sent Japanese whaling ship drystrength call wing spars made rolled the other ck major hull repairs Crew members cardboard little tubes cardboard very good reason tug have very nice about whole thing have taken model buildfound trouser hangers perfect job Save wire part will need Wheels stock Trexlers inflated 35ing enthusiasm now have local landing gear axle Coat wingpounds air pressure flotation theRC club hope register spars six coats clear dope setevent plane forced land sea aAMA soon possible rhaps aside dry go outside andvery real possibility amthe time reading Also have breathe deeply few minutesSince Trexlers light absorb land-received some very kind notes lo Notice positioning orientation ofing shocks well minimal structural sup-cal whale union along promises re ribs relative spars both im-port system required Use leftovertrieve model planes lost sea portant difficult explain ac-coat hanger wire wing spar source name aircraft Bell-Anchor complish fact can safely said iffor axle quite sufficient en-derived bell tail course courages conservation materials Outand also extreme weight required Dont use stuts forhere have become acutely aware thefor flight under local conditions need conservationlarge spinner filled extra three chopsticks reful observer may have noticedfour pounds weight ensure stability drawing wing mountedthe buffeting winds wings naturally whole face couldthe other high very good rea-are made wood hopefully excus become historysonable use cardboard spars rdboard _______________________________________The tail assembly very straightforwardContinued page 180 78 Model Aviation NO OCR TEXT Difficult distinguish full-size plane OC-2 heads up another flight particular airplane authors rubber-powered version flying tour strands 3A6-in rubber plane flew quite well rubber didnt have endurance afforded Electric power MANY SCALE MODEL subjects ideal new small electric motor sys tems suitable rubber power Theyre limited-application airplanes Curtiss OC-2 gives modeler op tionsits very good rubber-powered sub ject outstanding electric-powered flier also happens alltime favorite airplanes inspiration model described came beautiful Peanut design Pres Bruning flown successfully over two years rubber power before being converted mini-electric power Af ter literally hundreds flights count less hours flying lost ones surprise late afternoon thermal local flying field built according plans kept reasonably light OC-2 can flown either mini-electric rubber power Scale Free Flight fan will find model rewarding realistic flier havent yet tried mini-electric Scale flying have some Scale Free Flight exper ience give little Curtiss OC-2 Falcon go original Curt iss OC-2 Navy denFor Scale Free Flight biwing enthusiast versatile 24-in-span craft just might fit bill Specifically designed Mini-6 electric motor system model can easily adapted rubberpowered flight well EDon Srull vation famous Curtiss Falcon series Army two-seat fighters Fal con accepted use Navy 1927 planes modified aircooled Pratt & Whitney Wasp radial en gines place Packard Liberty liquid-cooled engines previously used first modified Falcons delivered Marine Corps 1928 large size heavy weight F8C- 1 however yielded performance far below required specialized fighter air craft As result airplane redesignated OC-2 relegated all-purpose role included observation air evacua tion well fighting dive-bombing last 24 OC-2s operated Marine Corps retired 1935 Construction model designed especially HiLine Mini-6 motor models 135 sq wing area puts upper size limit high-drag biplanes can flown successfully mini-electric motor systems means aircraft should built light possible must 80 Model Aviation properly trimmed achieve optimum flight performance Except wing spars leading edges use very lightweight balsa through out Also firm stiff balsa should used fuselage longerons Resist temp tation beef up reinforce structure has adequate strength its tended purpose Fuselage Build two identical sides using 342-sq balsa Join two sides adding crosspieces formers Bend ca bane struts A2-dia piano wire carefully glue formers F5 F6 before attaching latter fuselage frame Make up landing gear legs 045 piano wire attach bottom fuselage slotted crosspieces Re inforce both cabane landing gear small pieces silk Add A6 x /8-in stringers Complete cockpit decking nose sheet ing Carve nose block piece Fl shape after facing /64 ply sheet Make sure cutout fits HiLine motor Ensure have approximately 30 right thrust 20 downthrust motor mounted Cover landing gear legs heavy pa per fairings attached white glue Dont cover cabane struts paper fairings stage intend fly OC-2 some point rubber power now time install rear motor peg support strip -in-wide %2 sheet balsa front fu selage upright section Fl 1 will allow drill hole very easily add -india aluminum tube rear motor peg after model complete Sand fuselage structure apply two coats thin dope set aside until ready covering uncowled nine-cylinder Wasp radial engine OC-2 prominent scale detail Wil liams Bros plastic cylinders vacuum-formed heads make simple realistic facsimile can easily removed later dope thin ner Place fuselage lower wing assem bly either wooden blocks books tape down cant move fit ting upper wing Drill /16-dia holes upper wing gussets /2-ID aluminum tube sockets fitted Glue A-in-long pieces tubing holes carefully slide wing place Check wings approximate alignment sighting model front top sides Make minor bends ca bane wires necessary align top wing fuselage bottom wing Go slowly make small corrections tail surfaces conventional con struction Use light straight balsa stock Dont forget build rudder sepa rate movable surface Although shown plans elevator can also built separate movable surface simplify itial flight trimming Sand structures apply several coats thin dope Wings Cut ribs lightweight balsa sheet Use firm straight balsa strip spars leading edges Complete both wings build indicated dihe dral Sand wings final shape includ ing leading trailing edges critical stage biwing construc tion fitting rigging wings Take time get right because what will determine well whole airplane lines up First fit bottom wing fuselage cutout minor sanding cutting may required good fit Make sure wing lined up sighting straight down model Both wing tips must equidistant tail post Spot glue lower wing place use type glue distinctive swept upper wing Curtiss Falcon series unique fin shape give OC-2 its classic Golden Age look swept upper wing also enhances stability April 1990 81 Full-Size Plans AvailableSee Page 196 LZIli ECCSFR Ir _V Ill 2IORl ecfeegh FOR PlUMeS UIRI6 MOTOR 12221102 1210222111Nl4~2l~M24 NCR SPAN NCR2 AREA A&i02 Final tweaks should made bring wings perfect alignment measured rulers pieces thread wing still place add diago nal braces cabane Dont omit braces provide tremendous strength stiffness upper wing mount Wrap thin steel copper wire around upper lower ends cabane struts spot solder place Kevlar thread heavy carpet thread fixed CyA cy anoacrylate may used lieu wire Before removing wing ca bane struts make up fit interplane struts First cut front rear struts size remember right left struts should same size Add small metal pins end reinforce strut-to wing joints Temporarily fit struts po sition carefully cut glue diagonal interplane strut dry semblies will rigid can removed wings Disassemble model add rein forcing gussets around cabane attach points heavy paper fairings around cabane struts can now attached electric motor system installed sheeting small area bottom fu selage between landing gear legs %2 balsa sheeted area should large enough HiLine switch charger plate can attached Gluing units inside will make almost flush bottom fuselage three lOO-mAh-cell flight pack must installed can moved fore aft achieve correct balance point can done gluing l-in-wide strip hard A 6 balsa inside fuselage just above bottom wing section F6 back FlO 5-in-long platform fixed fuselage uprights %2-sq crosspieces battery positioned correct center-of-gravity can sim ply glued platform few drops CyA battery needs replacement can pried loose replaced via front cockpit can also installed Velcro rubber hold-downs Use imaginationjust dont add unnec essary weight Solder necessary connections mini-electric motor system attach motor front former Fl small sheet metal screws Attach 6-in-dia plastic prop shim motor required achieve about 2 R downthrust 30 right Continued page 180 82 Model Aviation Left author showing off venerable rubber-powered OC-2 Fal con Still excellent shape after hundreds flights finally lost unusually strong thermal swept over field Above HiLine Mini-6 electric motor system complete prop three-cell 100 mAh battery switch entire rig weighs about 1 1/2 oz provides ideal power scalelike flights can keep airplane aloft up 11/2 mm Photos Tom Schmitt Performance Specialties owned operated World Pylon Racing Champion Dave Shadel customize maintain majority high performance engines used todays racing enthusiasts addition work racing engines also repair customize OS Supertigre engines welt providing warranty service repairs Bob Violett Models KBV 72 82 complete line Webra engines custom engines used some top aerobatic raang pilots world interested World Class performance please contact us weekday between 10 am 5 pm West Coast time Well look forward hearing Please send $100 descriptive brochure Visa & Mastercard accepted Aircraft Racing Headquartere PERFORMANCE SPECIALTIES Custom ABC Piston / Cylinder Assemblies True Chrome Plating Higher Performance ii Longer Wear Pcrfomwnce Spetualtde QUAWY RADIO COlNL POLU Available K&B 65 75 OS 40 VFNRP OS 61 FSR 05 61 VF OS Long Stroke 61 Rossi 40 65 81 Supertigre X-40 YS60 ES/FR YS Long Stroke Others Coming Soon Performance Specialties PO Box 4003 Carlsbad CA 92008 619 729-1658 RN Zaic Yearbooks ff need hobby shop mall never heard brand names unfamiliar because local hobby shop does stock have got point quality stick-and tissue kits manufactured cottage industries nd distributed small mail order houses such Airmans Supply couple issues back ran something history Air Trails magazine compiled As sociate Editor Ross McMullen got letter Bruce Thompson Toronto Canada saying Air Trails history complete rst started l928 Vol No dated Oc tober pulp size aviation sto ries published Street Smith Bill Barnes started Vol No February 1934 continued until September 1935 pulp size recently got copy new AMA Supply Service catalog strongly recommend books Rubber Powered Model Airplanes au thored Don Ross World Model Air planes Bill Winter having much useful how-to-do-it information cannot recommend books Charles Hmpson Grant Aero Science Free Flight Gateway Aero Science except historical interest interest have kind practical information Ross Winter works lhe recent edition MECA Swap Sheet Model Engine Collectors Association has ad gaskets number engines have need contact John Zandecki 267 Lincoln Creek Rd Centralia WA 98531 Include usual SASE same issue fells saying Anderson Spitfire 65 back production us ing original dies tooling Send SASE details Marvin Miller 250 Bronco Rd So quel CA 95073 tel 1-408/475-6858 Tell what Send SASE MECA 3007 Travis West Lake LA 70669 request ap plication blank join up wont have read Swap Sheet like Keep cards letters pictures old Ardens dont want etc coming way Bell Anchor/Biltright Continued page 78 being another form wood fiber after Good Lord wanted airplane wings made metal would have made trees out aluminum dont know what means crew tug boat says something pilots full-size airplanes say lot Lets go Get out glue little sharp knives Band-Aids materi als sense humor ull need hobby/sport should fun first foremost Dont take se riously cant chuckle yourself once poor souls stuck out faraway places can still enjoy life long have airplane some kind nd So balmy breezes brush brow sun seems just tad too hot think us down cold windy rock manag ing have what fun can Did mentic tug Swedish craft al female crew Vive le model aviation Editor did notice cover da month didnt Curtiss OC-2/SruIl Continued page 82 thrust good starting point final ac justments will made during actual flig tests Charge up battery pack mak sure everything works properly Give th entire framework final sanding before coy ering Covering finishing Plyspan simi lar lightweight tissue should used Sinci no decent silver-colored tissue available overall aluminum doped fir ish OC-2 best simulated alt minum dope over white tissue covere model white Plyspan tissue excel top upper wing wa covered yellow Plyspan lightl sprayed yellow dope After covering model shrink tis sue fine spray water preferabl brushed coat isopropyl alcoho regular 70% drugstore variety wQrk fine find alcohol shrinks tissue little gently water les prone warp light structures Pin down th structures theyre drying furthe minimize chance warping Since th AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING INFO $300BUILD & FLY THE miniMAX AWARDED Grand Champion and * Computer Designed 3 Axis Control Reserve Grand Champion Ultralight * Part 03 Ultralight * Easy Construction 1989 Sun-N-Fun Fly-In Wood Construction TEAM INC BOX 338M BRADYVILLE TN 37026 16151 765-5397 180 Model Aviation RC DESIGNS WEASEL NFoemftBa IIe dwe e mci no ze 4O-5 2 cyce 84 ESIGNS 75 Price Dr Wilmington OH 45177 513-382-2158 Hrs 4-8 pmWe accept12-8 pm Mon-FriMastercard ViseSaturdays YOURSELF
Edition: Model Aviation - 1990/04
Page Numbers: 78, 79, 80, 81, 82, 180
The&beli-Ancho Its timely look atyou can build wing correctly shown should have no trouble flyingThe bell upper solutions real planeof rudder Please note struts functionalpart imagined problemsas well facetious Make fromalerts pilot straight-grained white oak aged least modeler hadthree years pot kimchee ded Dutch roll roasted slowly over bowl really hot Tex just wanted toMex chili exactly hour 45except back plane nutes per gram per cm will deliveris straight backward rather forward have fun owna strut makes dynamite struc-Use balsa possible glue parts u etural component also makes prettysecurely bell upper part u 11111 way good substitute dynamite need rudder functional can heard over U 'Scratch' Biltrightto loosen stuck jar lids kitchenthe crashing waves scream Let caution however about usinglittle engine bell also will alert pi AM NEW RC modeling love tothem chopsticks hard chomp andlot dreaded Dutch roll would read Model Aviation comes eachyour whole face could history am acertainly avoid wooden shoe month first thing turn fea-firm believer safety Stuck out onbell also important nomenclature tured model design readersthis rock could weeks before nextpoint view about later illustrated out-of-sight cutawaysupply ship arrives Band-Aid ne power train bit unus drawing Wow thought could thatam very careful timesual perhaps modtoo Maybe noterate climesbut fairly common have worked lighthouse attendant k Trexlerparts stiff breezes needs lot Tierra del Fuego several yearspower penetration So have adapted have tried several forms airplane wheels have 35 lb Ofthe small air compressor war surplus modeling Free Flight Control Line Rubber power Sailplanes Trouble theair pressure forItalian torpedoes have equipped glow plugs dual security chain high winds just blow everything out sea flotation purposesdrive speed reduction unit drop outWhoosh s gonerageous 100000 rpm usable Speaking safety let point out an-range reduce intolerable shock little plane weighsother feature known fact ac-vibration conversion puts out connect cidents involving model airplane propellerthe power output shaft prop 42 lb flies fastoccur outer trips whirling prop enough penetrateFor absolute safety suggest removing theRubberband coupling outer two inches blade breezedangerous portionremoved plane be- engine prop comes very safeeven novice oper- ces otherwise hit idea new planeate Remember ety first knew right track little fuselagestructure straightforward intolerable shock plane designed fly 70-knot winds soand should noproblem experienced ibration heavier planes havemodelers withuncorrected astigmatism seen Model Aviation little Bell-shall say no morehere encouragelength several rubberbands earAnchor weighs 42 lb fuelyou strive forclean neat joints in-her flying days rubber dampens high wing loading resulting fromterest soundstructure absorbs spikes power curve 18-in wingspan flies fast enough to_____________________________________ penetrate breezes off deck wingnicely engine penetrates amazingly Let explain some other features thisOneis mountedwell date have sunk ocean-going rather specialized design maximumlowhightug sent Japanese whaling ship drystrength call wing spars made rolled the other ck major hull repairs Crew members cardboard little tubes cardboard very good reason tug have very nice about whole thing have taken model buildfound trouser hangers perfect job Save wire part will need Wheels stock Trexlers inflated 35ing enthusiasm now have local landing gear axle Coat wingpounds air pressure flotation theRC club hope register spars six coats clear dope setevent plane forced land sea aAMA soon possible rhaps aside dry go outside andvery real possibility amthe time reading Also have breathe deeply few minutesSince Trexlers light absorb land-received some very kind notes lo Notice positioning orientation ofing shocks well minimal structural sup-cal whale union along promises re ribs relative spars both im-port system required Use leftovertrieve model planes lost sea portant difficult explain ac-coat hanger wire wing spar source name aircraft Bell-Anchor complish fact can safely said iffor axle quite sufficient en-derived bell tail course courages conservation materials Outand also extreme weight required Dont use stuts forhere have become acutely aware thefor flight under local conditions need conservationlarge spinner filled extra three chopsticks reful observer may have noticedfour pounds weight ensure stability drawing wing mountedthe buffeting winds wings naturally whole face couldthe other high very good rea-are made wood hopefully excus become historysonable use cardboard spars rdboard _______________________________________The tail assembly very straightforwardContinued page 180 78 Model Aviation NO OCR TEXT Difficult distinguish full-size plane OC-2 heads up another flight particular airplane authors rubber-powered version flying tour strands 3A6-in rubber plane flew quite well rubber didnt have endurance afforded Electric power MANY SCALE MODEL subjects ideal new small electric motor sys tems suitable rubber power Theyre limited-application airplanes Curtiss OC-2 gives modeler op tionsits very good rubber-powered sub ject outstanding electric-powered flier also happens alltime favorite airplanes inspiration model described came beautiful Peanut design Pres Bruning flown successfully over two years rubber power before being converted mini-electric power Af ter literally hundreds flights count less hours flying lost ones surprise late afternoon thermal local flying field built according plans kept reasonably light OC-2 can flown either mini-electric rubber power Scale Free Flight fan will find model rewarding realistic flier havent yet tried mini-electric Scale flying have some Scale Free Flight exper ience give little Curtiss OC-2 Falcon go original Curt iss OC-2 Navy denFor Scale Free Flight biwing enthusiast versatile 24-in-span craft just might fit bill Specifically designed Mini-6 electric motor system model can easily adapted rubberpowered flight well EDon Srull vation famous Curtiss Falcon series Army two-seat fighters Fal con accepted use Navy 1927 planes modified aircooled Pratt & Whitney Wasp radial en gines place Packard Liberty liquid-cooled engines previously used first modified Falcons delivered Marine Corps 1928 large size heavy weight F8C- 1 however yielded performance far below required specialized fighter air craft As result airplane redesignated OC-2 relegated all-purpose role included observation air evacua tion well fighting dive-bombing last 24 OC-2s operated Marine Corps retired 1935 Construction model designed especially HiLine Mini-6 motor models 135 sq wing area puts upper size limit high-drag biplanes can flown successfully mini-electric motor systems means aircraft should built light possible must 80 Model Aviation properly trimmed achieve optimum flight performance Except wing spars leading edges use very lightweight balsa through out Also firm stiff balsa should used fuselage longerons Resist temp tation beef up reinforce structure has adequate strength its tended purpose Fuselage Build two identical sides using 342-sq balsa Join two sides adding crosspieces formers Bend ca bane struts A2-dia piano wire carefully glue formers F5 F6 before attaching latter fuselage frame Make up landing gear legs 045 piano wire attach bottom fuselage slotted crosspieces Re inforce both cabane landing gear small pieces silk Add A6 x /8-in stringers Complete cockpit decking nose sheet ing Carve nose block piece Fl shape after facing /64 ply sheet Make sure cutout fits HiLine motor Ensure have approximately 30 right thrust 20 downthrust motor mounted Cover landing gear legs heavy pa per fairings attached white glue Dont cover cabane struts paper fairings stage intend fly OC-2 some point rubber power now time install rear motor peg support strip -in-wide %2 sheet balsa front fu selage upright section Fl 1 will allow drill hole very easily add -india aluminum tube rear motor peg after model complete Sand fuselage structure apply two coats thin dope set aside until ready covering uncowled nine-cylinder Wasp radial engine OC-2 prominent scale detail Wil liams Bros plastic cylinders vacuum-formed heads make simple realistic facsimile can easily removed later dope thin ner Place fuselage lower wing assem bly either wooden blocks books tape down cant move fit ting upper wing Drill /16-dia holes upper wing gussets /2-ID aluminum tube sockets fitted Glue A-in-long pieces tubing holes carefully slide wing place Check wings approximate alignment sighting model front top sides Make minor bends ca bane wires necessary align top wing fuselage bottom wing Go slowly make small corrections tail surfaces conventional con struction Use light straight balsa stock Dont forget build rudder sepa rate movable surface Although shown plans elevator can also built separate movable surface simplify itial flight trimming Sand structures apply several coats thin dope Wings Cut ribs lightweight balsa sheet Use firm straight balsa strip spars leading edges Complete both wings build indicated dihe dral Sand wings final shape includ ing leading trailing edges critical stage biwing construc tion fitting rigging wings Take time get right because what will determine well whole airplane lines up First fit bottom wing fuselage cutout minor sanding cutting may required good fit Make sure wing lined up sighting straight down model Both wing tips must equidistant tail post Spot glue lower wing place use type glue distinctive swept upper wing Curtiss Falcon series unique fin shape give OC-2 its classic Golden Age look swept upper wing also enhances stability April 1990 81 Full-Size Plans AvailableSee Page 196 LZIli ECCSFR Ir _V Ill 2IORl ecfeegh FOR PlUMeS UIRI6 MOTOR 12221102 1210222111Nl4~2l~M24 NCR SPAN NCR2 AREA A&i02 Final tweaks should made bring wings perfect alignment measured rulers pieces thread wing still place add diago nal braces cabane Dont omit braces provide tremendous strength stiffness upper wing mount Wrap thin steel copper wire around upper lower ends cabane struts spot solder place Kevlar thread heavy carpet thread fixed CyA cy anoacrylate may used lieu wire Before removing wing ca bane struts make up fit interplane struts First cut front rear struts size remember right left struts should same size Add small metal pins end reinforce strut-to wing joints Temporarily fit struts po sition carefully cut glue diagonal interplane strut dry semblies will rigid can removed wings Disassemble model add rein forcing gussets around cabane attach points heavy paper fairings around cabane struts can now attached electric motor system installed sheeting small area bottom fu selage between landing gear legs %2 balsa sheeted area should large enough HiLine switch charger plate can attached Gluing units inside will make almost flush bottom fuselage three lOO-mAh-cell flight pack must installed can moved fore aft achieve correct balance point can done gluing l-in-wide strip hard A 6 balsa inside fuselage just above bottom wing section F6 back FlO 5-in-long platform fixed fuselage uprights %2-sq crosspieces battery positioned correct center-of-gravity can sim ply glued platform few drops CyA battery needs replacement can pried loose replaced via front cockpit can also installed Velcro rubber hold-downs Use imaginationjust dont add unnec essary weight Solder necessary connections mini-electric motor system attach motor front former Fl small sheet metal screws Attach 6-in-dia plastic prop shim motor required achieve about 2 R downthrust 30 right Continued page 180 82 Model Aviation Left author showing off venerable rubber-powered OC-2 Fal con Still excellent shape after hundreds flights finally lost unusually strong thermal swept over field Above HiLine Mini-6 electric motor system complete prop three-cell 100 mAh battery switch entire rig weighs about 1 1/2 oz provides ideal power scalelike flights can keep airplane aloft up 11/2 mm Photos Tom Schmitt Performance Specialties owned operated World Pylon Racing Champion Dave Shadel customize maintain majority high performance engines used todays racing enthusiasts addition work racing engines also repair customize OS Supertigre engines welt providing warranty service repairs Bob Violett Models KBV 72 82 complete line Webra engines custom engines used some top aerobatic raang pilots world interested World Class performance please contact us weekday between 10 am 5 pm West Coast time Well look forward hearing Please send $100 descriptive brochure Visa & Mastercard accepted Aircraft Racing Headquartere PERFORMANCE SPECIALTIES Custom ABC Piston / Cylinder Assemblies True Chrome Plating Higher Performance ii Longer Wear Pcrfomwnce Spetualtde QUAWY RADIO COlNL POLU Available K&B 65 75 OS 40 VFNRP OS 61 FSR 05 61 VF OS Long Stroke 61 Rossi 40 65 81 Supertigre X-40 YS60 ES/FR YS Long Stroke Others Coming Soon Performance Specialties PO Box 4003 Carlsbad CA 92008 619 729-1658 RN Zaic Yearbooks ff need hobby shop mall never heard brand names unfamiliar because local hobby shop does stock have got point quality stick-and tissue kits manufactured cottage industries nd distributed small mail order houses such Airmans Supply couple issues back ran something history Air Trails magazine compiled As sociate Editor Ross McMullen got letter Bruce Thompson Toronto Canada saying Air Trails history complete rst started l928 Vol No dated Oc tober pulp size aviation sto ries published Street Smith Bill Barnes started Vol No February 1934 continued until September 1935 pulp size recently got copy new AMA Supply Service catalog strongly recommend books Rubber Powered Model Airplanes au thored Don Ross World Model Air planes Bill Winter having much useful how-to-do-it information cannot recommend books Charles Hmpson Grant Aero Science Free Flight Gateway Aero Science except historical interest interest have kind practical information Ross Winter works lhe recent edition MECA Swap Sheet Model Engine Collectors Association has ad gaskets number engines have need contact John Zandecki 267 Lincoln Creek Rd Centralia WA 98531 Include usual SASE same issue fells saying Anderson Spitfire 65 back production us ing original dies tooling Send SASE details Marvin Miller 250 Bronco Rd So quel CA 95073 tel 1-408/475-6858 Tell what Send SASE MECA 3007 Travis West Lake LA 70669 request ap plication blank join up wont have read Swap Sheet like Keep cards letters pictures old Ardens dont want etc coming way Bell Anchor/Biltright Continued page 78 being another form wood fiber after Good Lord wanted airplane wings made metal would have made trees out aluminum dont know what means crew tug boat says something pilots full-size airplanes say lot Lets go Get out glue little sharp knives Band-Aids materi als sense humor ull need hobby/sport should fun first foremost Dont take se riously cant chuckle yourself once poor souls stuck out faraway places can still enjoy life long have airplane some kind nd So balmy breezes brush brow sun seems just tad too hot think us down cold windy rock manag ing have what fun can Did mentic tug Swedish craft al female crew Vive le model aviation Editor did notice cover da month didnt Curtiss OC-2/SruIl Continued page 82 thrust good starting point final ac justments will made during actual flig tests Charge up battery pack mak sure everything works properly Give th entire framework final sanding before coy ering Covering finishing Plyspan simi lar lightweight tissue should used Sinci no decent silver-colored tissue available overall aluminum doped fir ish OC-2 best simulated alt minum dope over white tissue covere model white Plyspan tissue excel top upper wing wa covered yellow Plyspan lightl sprayed yellow dope After covering model shrink tis sue fine spray water preferabl brushed coat isopropyl alcoho regular 70% drugstore variety wQrk fine find alcohol shrinks tissue little gently water les prone warp light structures Pin down th structures theyre drying furthe minimize chance warping Since th AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING INFO $300BUILD & FLY THE miniMAX AWARDED Grand Champion and * Computer Designed 3 Axis Control Reserve Grand Champion Ultralight * Part 03 Ultralight * Easy Construction 1989 Sun-N-Fun Fly-In Wood Construction TEAM INC BOX 338M BRADYVILLE TN 37026 16151 765-5397 180 Model Aviation RC DESIGNS WEASEL NFoemftBa IIe dwe e mci no ze 4O-5 2 cyce 84 ESIGNS 75 Price Dr Wilmington OH 45177 513-382-2158 Hrs 4-8 pmWe accept12-8 pm Mon-FriMastercard ViseSaturdays YOURSELF
Edition: Model Aviation - 1990/04
Page Numbers: 78, 79, 80, 81, 82, 180
The&beli-Ancho Its timely look atyou can build wing correctly shown should have no trouble flyingThe bell upper solutions real planeof rudder Please note struts functionalpart imagined problemsas well facetious Make fromalerts pilot straight-grained white oak aged least modeler hadthree years pot kimchee ded Dutch roll roasted slowly over bowl really hot Tex just wanted toMex chili exactly hour 45except back plane nutes per gram per cm will deliveris straight backward rather forward have fun owna strut makes dynamite struc-Use balsa possible glue parts u etural component also makes prettysecurely bell upper part u 11111 way good substitute dynamite need rudder functional can heard over U 'Scratch' Biltrightto loosen stuck jar lids kitchenthe crashing waves scream Let caution however about usinglittle engine bell also will alert pi AM NEW RC modeling love tothem chopsticks hard chomp andlot dreaded Dutch roll would read Model Aviation comes eachyour whole face could history am acertainly avoid wooden shoe month first thing turn fea-firm believer safety Stuck out onbell also important nomenclature tured model design readersthis rock could weeks before nextpoint view about later illustrated out-of-sight cutawaysupply ship arrives Band-Aid ne power train bit unus drawing Wow thought could thatam very careful timesual perhaps modtoo Maybe noterate climesbut fairly common have worked lighthouse attendant k Trexlerparts stiff breezes needs lot Tierra del Fuego several yearspower penetration So have adapted have tried several forms airplane wheels have 35 lb Ofthe small air compressor war surplus modeling Free Flight Control Line Rubber power Sailplanes Trouble theair pressure forItalian torpedoes have equipped glow plugs dual security chain high winds just blow everything out sea flotation purposesdrive speed reduction unit drop outWhoosh s gonerageous 100000 rpm usable Speaking safety let point out an-range reduce intolerable shock little plane weighsother feature known fact ac-vibration conversion puts out connect cidents involving model airplane propellerthe power output shaft prop 42 lb flies fastoccur outer trips whirling prop enough penetrateFor absolute safety suggest removing theRubberband coupling outer two inches blade breezedangerous portionremoved plane be- engine prop comes very safeeven novice oper- ces otherwise hit idea new planeate Remember ety first knew right track little fuselagestructure straightforward intolerable shock plane designed fly 70-knot winds soand should noproblem experienced ibration heavier planes havemodelers withuncorrected astigmatism seen Model Aviation little Bell-shall say no morehere encouragelength several rubberbands earAnchor weighs 42 lb fuelyou strive forclean neat joints in-her flying days rubber dampens high wing loading resulting fromterest soundstructure absorbs spikes power curve 18-in wingspan flies fast enough to_____________________________________ penetrate breezes off deck wingnicely engine penetrates amazingly Let explain some other features thisOneis mountedwell date have sunk ocean-going rather specialized design maximumlowhightug sent Japanese whaling ship drystrength call wing spars made rolled the other ck major hull repairs Crew members cardboard little tubes cardboard very good reason tug have very nice about whole thing have taken model buildfound trouser hangers perfect job Save wire part will need Wheels stock Trexlers inflated 35ing enthusiasm now have local landing gear axle Coat wingpounds air pressure flotation theRC club hope register spars six coats clear dope setevent plane forced land sea aAMA soon possible rhaps aside dry go outside andvery real possibility amthe time reading Also have breathe deeply few minutesSince Trexlers light absorb land-received some very kind notes lo Notice positioning orientation ofing shocks well minimal structural sup-cal whale union along promises re ribs relative spars both im-port system required Use leftovertrieve model planes lost sea portant difficult explain ac-coat hanger wire wing spar source name aircraft Bell-Anchor complish fact can safely said iffor axle quite sufficient en-derived bell tail course courages conservation materials Outand also extreme weight required Dont use stuts forhere have become acutely aware thefor flight under local conditions need conservationlarge spinner filled extra three chopsticks reful observer may have noticedfour pounds weight ensure stability drawing wing mountedthe buffeting winds wings naturally whole face couldthe other high very good rea-are made wood hopefully excus become historysonable use cardboard spars rdboard _______________________________________The tail assembly very straightforwardContinued page 180 78 Model Aviation NO OCR TEXT Difficult distinguish full-size plane OC-2 heads up another flight particular airplane authors rubber-powered version flying tour strands 3A6-in rubber plane flew quite well rubber didnt have endurance afforded Electric power MANY SCALE MODEL subjects ideal new small electric motor sys tems suitable rubber power Theyre limited-application airplanes Curtiss OC-2 gives modeler op tionsits very good rubber-powered sub ject outstanding electric-powered flier also happens alltime favorite airplanes inspiration model described came beautiful Peanut design Pres Bruning flown successfully over two years rubber power before being converted mini-electric power Af ter literally hundreds flights count less hours flying lost ones surprise late afternoon thermal local flying field built according plans kept reasonably light OC-2 can flown either mini-electric rubber power Scale Free Flight fan will find model rewarding realistic flier havent yet tried mini-electric Scale flying have some Scale Free Flight exper ience give little Curtiss OC-2 Falcon go original Curt iss OC-2 Navy denFor Scale Free Flight biwing enthusiast versatile 24-in-span craft just might fit bill Specifically designed Mini-6 electric motor system model can easily adapted rubberpowered flight well EDon Srull vation famous Curtiss Falcon series Army two-seat fighters Fal con accepted use Navy 1927 planes modified aircooled Pratt & Whitney Wasp radial en gines place Packard Liberty liquid-cooled engines previously used first modified Falcons delivered Marine Corps 1928 large size heavy weight F8C- 1 however yielded performance far below required specialized fighter air craft As result airplane redesignated OC-2 relegated all-purpose role included observation air evacua tion well fighting dive-bombing last 24 OC-2s operated Marine Corps retired 1935 Construction model designed especially HiLine Mini-6 motor models 135 sq wing area puts upper size limit high-drag biplanes can flown successfully mini-electric motor systems means aircraft should built light possible must 80 Model Aviation properly trimmed achieve optimum flight performance Except wing spars leading edges use very lightweight balsa through out Also firm stiff balsa should used fuselage longerons Resist temp tation beef up reinforce structure has adequate strength its tended purpose Fuselage Build two identical sides using 342-sq balsa Join two sides adding crosspieces formers Bend ca bane struts A2-dia piano wire carefully glue formers F5 F6 before attaching latter fuselage frame Make up landing gear legs 045 piano wire attach bottom fuselage slotted crosspieces Re inforce both cabane landing gear small pieces silk Add A6 x /8-in stringers Complete cockpit decking nose sheet ing Carve nose block piece Fl shape after facing /64 ply sheet Make sure cutout fits HiLine motor Ensure have approximately 30 right thrust 20 downthrust motor mounted Cover landing gear legs heavy pa per fairings attached white glue Dont cover cabane struts paper fairings stage intend fly OC-2 some point rubber power now time install rear motor peg support strip -in-wide %2 sheet balsa front fu selage upright section Fl 1 will allow drill hole very easily add -india aluminum tube rear motor peg after model complete Sand fuselage structure apply two coats thin dope set aside until ready covering uncowled nine-cylinder Wasp radial engine OC-2 prominent scale detail Wil liams Bros plastic cylinders vacuum-formed heads make simple realistic facsimile can easily removed later dope thin ner Place fuselage lower wing assem bly either wooden blocks books tape down cant move fit ting upper wing Drill /16-dia holes upper wing gussets /2-ID aluminum tube sockets fitted Glue A-in-long pieces tubing holes carefully slide wing place Check wings approximate alignment sighting model front top sides Make minor bends ca bane wires necessary align top wing fuselage bottom wing Go slowly make small corrections tail surfaces conventional con struction Use light straight balsa stock Dont forget build rudder sepa rate movable surface Although shown plans elevator can also built separate movable surface simplify itial flight trimming Sand structures apply several coats thin dope Wings Cut ribs lightweight balsa sheet Use firm straight balsa strip spars leading edges Complete both wings build indicated dihe dral Sand wings final shape includ ing leading trailing edges critical stage biwing construc tion fitting rigging wings Take time get right because what will determine well whole airplane lines up First fit bottom wing fuselage cutout minor sanding cutting may required good fit Make sure wing lined up sighting straight down model Both wing tips must equidistant tail post Spot glue lower wing place use type glue distinctive swept upper wing Curtiss Falcon series unique fin shape give OC-2 its classic Golden Age look swept upper wing also enhances stability April 1990 81 Full-Size Plans AvailableSee Page 196 LZIli ECCSFR Ir _V Ill 2IORl ecfeegh FOR PlUMeS UIRI6 MOTOR 12221102 1210222111Nl4~2l~M24 NCR SPAN NCR2 AREA A&i02 Final tweaks should made bring wings perfect alignment measured rulers pieces thread wing still place add diago nal braces cabane Dont omit braces provide tremendous strength stiffness upper wing mount Wrap thin steel copper wire around upper lower ends cabane struts spot solder place Kevlar thread heavy carpet thread fixed CyA cy anoacrylate may used lieu wire Before removing wing ca bane struts make up fit interplane struts First cut front rear struts size remember right left struts should same size Add small metal pins end reinforce strut-to wing joints Temporarily fit struts po sition carefully cut glue diagonal interplane strut dry semblies will rigid can removed wings Disassemble model add rein forcing gussets around cabane attach points heavy paper fairings around cabane struts can now attached electric motor system installed sheeting small area bottom fu selage between landing gear legs %2 balsa sheeted area should large enough HiLine switch charger plate can attached Gluing units inside will make almost flush bottom fuselage three lOO-mAh-cell flight pack must installed can moved fore aft achieve correct balance point can done gluing l-in-wide strip hard A 6 balsa inside fuselage just above bottom wing section F6 back FlO 5-in-long platform fixed fuselage uprights %2-sq crosspieces battery positioned correct center-of-gravity can sim ply glued platform few drops CyA battery needs replacement can pried loose replaced via front cockpit can also installed Velcro rubber hold-downs Use imaginationjust dont add unnec essary weight Solder necessary connections mini-electric motor system attach motor front former Fl small sheet metal screws Attach 6-in-dia plastic prop shim motor required achieve about 2 R downthrust 30 right Continued page 180 82 Model Aviation Left author showing off venerable rubber-powered OC-2 Fal con Still excellent shape after hundreds flights finally lost unusually strong thermal swept over field Above HiLine Mini-6 electric motor system complete prop three-cell 100 mAh battery switch entire rig weighs about 1 1/2 oz provides ideal power scalelike flights can keep airplane aloft up 11/2 mm Photos Tom Schmitt Performance Specialties owned operated World Pylon Racing Champion Dave Shadel customize maintain majority high performance engines used todays racing enthusiasts addition work racing engines also repair customize OS Supertigre engines welt providing warranty service repairs Bob Violett Models KBV 72 82 complete line Webra engines custom engines used some top aerobatic raang pilots world interested World Class performance please contact us weekday between 10 am 5 pm West Coast time Well look forward hearing Please send $100 descriptive brochure Visa & Mastercard accepted Aircraft Racing Headquartere PERFORMANCE SPECIALTIES Custom ABC Piston / Cylinder Assemblies True Chrome Plating Higher Performance ii Longer Wear Pcrfomwnce Spetualtde QUAWY RADIO COlNL POLU Available K&B 65 75 OS 40 VFNRP OS 61 FSR 05 61 VF OS Long Stroke 61 Rossi 40 65 81 Supertigre X-40 YS60 ES/FR YS Long Stroke Others Coming Soon Performance Specialties PO Box 4003 Carlsbad CA 92008 619 729-1658 RN Zaic Yearbooks ff need hobby shop mall never heard brand names unfamiliar because local hobby shop does stock have got point quality stick-and tissue kits manufactured cottage industries nd distributed small mail order houses such Airmans Supply couple issues back ran something history Air Trails magazine compiled As sociate Editor Ross McMullen got letter Bruce Thompson Toronto Canada saying Air Trails history complete rst started l928 Vol No dated Oc tober pulp size aviation sto ries published Street Smith Bill Barnes started Vol No February 1934 continued until September 1935 pulp size recently got copy new AMA Supply Service catalog strongly recommend books Rubber Powered Model Airplanes au thored Don Ross World Model Air planes Bill Winter having much useful how-to-do-it information cannot recommend books Charles Hmpson Grant Aero Science Free Flight Gateway Aero Science except historical interest interest have kind practical information Ross Winter works lhe recent edition MECA Swap Sheet Model Engine Collectors Association has ad gaskets number engines have need contact John Zandecki 267 Lincoln Creek Rd Centralia WA 98531 Include usual SASE same issue fells saying Anderson Spitfire 65 back production us ing original dies tooling Send SASE details Marvin Miller 250 Bronco Rd So quel CA 95073 tel 1-408/475-6858 Tell what Send SASE MECA 3007 Travis West Lake LA 70669 request ap plication blank join up wont have read Swap Sheet like Keep cards letters pictures old Ardens dont want etc coming way Bell Anchor/Biltright Continued page 78 being another form wood fiber after Good Lord wanted airplane wings made metal would have made trees out aluminum dont know what means crew tug boat says something pilots full-size airplanes say lot Lets go Get out glue little sharp knives Band-Aids materi als sense humor ull need hobby/sport should fun first foremost Dont take se riously cant chuckle yourself once poor souls stuck out faraway places can still enjoy life long have airplane some kind nd So balmy breezes brush brow sun seems just tad too hot think us down cold windy rock manag ing have what fun can Did mentic tug Swedish craft al female crew Vive le model aviation Editor did notice cover da month didnt Curtiss OC-2/SruIl Continued page 82 thrust good starting point final ac justments will made during actual flig tests Charge up battery pack mak sure everything works properly Give th entire framework final sanding before coy ering Covering finishing Plyspan simi lar lightweight tissue should used Sinci no decent silver-colored tissue available overall aluminum doped fir ish OC-2 best simulated alt minum dope over white tissue covere model white Plyspan tissue excel top upper wing wa covered yellow Plyspan lightl sprayed yellow dope After covering model shrink tis sue fine spray water preferabl brushed coat isopropyl alcoho regular 70% drugstore variety wQrk fine find alcohol shrinks tissue little gently water les prone warp light structures Pin down th structures theyre drying furthe minimize chance warping Since th AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING INFO $300BUILD & FLY THE miniMAX AWARDED Grand Champion and * Computer Designed 3 Axis Control Reserve Grand Champion Ultralight * Part 03 Ultralight * Easy Construction 1989 Sun-N-Fun Fly-In Wood Construction TEAM INC BOX 338M BRADYVILLE TN 37026 16151 765-5397 180 Model Aviation RC DESIGNS WEASEL NFoemftBa IIe dwe e mci no ze 4O-5 2 cyce 84 ESIGNS 75 Price Dr Wilmington OH 45177 513-382-2158 Hrs 4-8 pmWe accept12-8 pm Mon-FriMastercard ViseSaturdays YOURSELF
Edition: Model Aviation - 1990/04
Page Numbers: 78, 79, 80, 81, 82, 180
The&beli-Ancho Its timely look atyou can build wing correctly shown should have no trouble flyingThe bell upper solutions real planeof rudder Please note struts functionalpart imagined problemsas well facetious Make fromalerts pilot straight-grained white oak aged least modeler hadthree years pot kimchee ded Dutch roll roasted slowly over bowl really hot Tex just wanted toMex chili exactly hour 45except back plane nutes per gram per cm will deliveris straight backward rather forward have fun owna strut makes dynamite struc-Use balsa possible glue parts u etural component also makes prettysecurely bell upper part u 11111 way good substitute dynamite need rudder functional can heard over U 'Scratch' Biltrightto loosen stuck jar lids kitchenthe crashing waves scream Let caution however about usinglittle engine bell also will alert pi AM NEW RC modeling love tothem chopsticks hard chomp andlot dreaded Dutch roll would read Model Aviation comes eachyour whole face could history am acertainly avoid wooden shoe month first thing turn fea-firm believer safety Stuck out onbell also important nomenclature tured model design readersthis rock could weeks before nextpoint view about later illustrated out-of-sight cutawaysupply ship arrives Band-Aid ne power train bit unus drawing Wow thought could thatam very careful timesual perhaps modtoo Maybe noterate climesbut fairly common have worked lighthouse attendant k Trexlerparts stiff breezes needs lot Tierra del Fuego several yearspower penetration So have adapted have tried several forms airplane wheels have 35 lb Ofthe small air compressor war surplus modeling Free Flight Control Line Rubber power Sailplanes Trouble theair pressure forItalian torpedoes have equipped glow plugs dual security chain high winds just blow everything out sea flotation purposesdrive speed reduction unit drop outWhoosh s gonerageous 100000 rpm usable Speaking safety let point out an-range reduce intolerable shock little plane weighsother feature known fact ac-vibration conversion puts out connect cidents involving model airplane propellerthe power output shaft prop 42 lb flies fastoccur outer trips whirling prop enough penetrateFor absolute safety suggest removing theRubberband coupling outer two inches blade breezedangerous portionremoved plane be- engine prop comes very safeeven novice oper- ces otherwise hit idea new planeate Remember ety first knew right track little fuselagestructure straightforward intolerable shock plane designed fly 70-knot winds soand should noproblem experienced ibration heavier planes havemodelers withuncorrected astigmatism seen Model Aviation little Bell-shall say no morehere encouragelength several rubberbands earAnchor weighs 42 lb fuelyou strive forclean neat joints in-her flying days rubber dampens high wing loading resulting fromterest soundstructure absorbs spikes power curve 18-in wingspan flies fast enough to_____________________________________ penetrate breezes off deck wingnicely engine penetrates amazingly Let explain some other features thisOneis mountedwell date have sunk ocean-going rather specialized design maximumlowhightug sent Japanese whaling ship drystrength call wing spars made rolled the other ck major hull repairs Crew members cardboard little tubes cardboard very good reason tug have very nice about whole thing have taken model buildfound trouser hangers perfect job Save wire part will need Wheels stock Trexlers inflated 35ing enthusiasm now have local landing gear axle Coat wingpounds air pressure flotation theRC club hope register spars six coats clear dope setevent plane forced land sea aAMA soon possible rhaps aside dry go outside andvery real possibility amthe time reading Also have breathe deeply few minutesSince Trexlers light absorb land-received some very kind notes lo Notice positioning orientation ofing shocks well minimal structural sup-cal whale union along promises re ribs relative spars both im-port system required Use leftovertrieve model planes lost sea portant difficult explain ac-coat hanger wire wing spar source name aircraft Bell-Anchor complish fact can safely said iffor axle quite sufficient en-derived bell tail course courages conservation materials Outand also extreme weight required Dont use stuts forhere have become acutely aware thefor flight under local conditions need conservationlarge spinner filled extra three chopsticks reful observer may have noticedfour pounds weight ensure stability drawing wing mountedthe buffeting winds wings naturally whole face couldthe other high very good rea-are made wood hopefully excus become historysonable use cardboard spars rdboard _______________________________________The tail assembly very straightforwardContinued page 180 78 Model Aviation NO OCR TEXT Difficult distinguish full-size plane OC-2 heads up another flight particular airplane authors rubber-powered version flying tour strands 3A6-in rubber plane flew quite well rubber didnt have endurance afforded Electric power MANY SCALE MODEL subjects ideal new small electric motor sys tems suitable rubber power Theyre limited-application airplanes Curtiss OC-2 gives modeler op tionsits very good rubber-powered sub ject outstanding electric-powered flier also happens alltime favorite airplanes inspiration model described came beautiful Peanut design Pres Bruning flown successfully over two years rubber power before being converted mini-electric power Af ter literally hundreds flights count less hours flying lost ones surprise late afternoon thermal local flying field built according plans kept reasonably light OC-2 can flown either mini-electric rubber power Scale Free Flight fan will find model rewarding realistic flier havent yet tried mini-electric Scale flying have some Scale Free Flight exper ience give little Curtiss OC-2 Falcon go original Curt iss OC-2 Navy denFor Scale Free Flight biwing enthusiast versatile 24-in-span craft just might fit bill Specifically designed Mini-6 electric motor system model can easily adapted rubberpowered flight well EDon Srull vation famous Curtiss Falcon series Army two-seat fighters Fal con accepted use Navy 1927 planes modified aircooled Pratt & Whitney Wasp radial en gines place Packard Liberty liquid-cooled engines previously used first modified Falcons delivered Marine Corps 1928 large size heavy weight F8C- 1 however yielded performance far below required specialized fighter air craft As result airplane redesignated OC-2 relegated all-purpose role included observation air evacua tion well fighting dive-bombing last 24 OC-2s operated Marine Corps retired 1935 Construction model designed especially HiLine Mini-6 motor models 135 sq wing area puts upper size limit high-drag biplanes can flown successfully mini-electric motor systems means aircraft should built light possible must 80 Model Aviation properly trimmed achieve optimum flight performance Except wing spars leading edges use very lightweight balsa through out Also firm stiff balsa should used fuselage longerons Resist temp tation beef up reinforce structure has adequate strength its tended purpose Fuselage Build two identical sides using 342-sq balsa Join two sides adding crosspieces formers Bend ca bane struts A2-dia piano wire carefully glue formers F5 F6 before attaching latter fuselage frame Make up landing gear legs 045 piano wire attach bottom fuselage slotted crosspieces Re inforce both cabane landing gear small pieces silk Add A6 x /8-in stringers Complete cockpit decking nose sheet ing Carve nose block piece Fl shape after facing /64 ply sheet Make sure cutout fits HiLine motor Ensure have approximately 30 right thrust 20 downthrust motor mounted Cover landing gear legs heavy pa per fairings attached white glue Dont cover cabane struts paper fairings stage intend fly OC-2 some point rubber power now time install rear motor peg support strip -in-wide %2 sheet balsa front fu selage upright section Fl 1 will allow drill hole very easily add -india aluminum tube rear motor peg after model complete Sand fuselage structure apply two coats thin dope set aside until ready covering uncowled nine-cylinder Wasp radial engine OC-2 prominent scale detail Wil liams Bros plastic cylinders vacuum-formed heads make simple realistic facsimile can easily removed later dope thin ner Place fuselage lower wing assem bly either wooden blocks books tape down cant move fit ting upper wing Drill /16-dia holes upper wing gussets /2-ID aluminum tube sockets fitted Glue A-in-long pieces tubing holes carefully slide wing place Check wings approximate alignment sighting model front top sides Make minor bends ca bane wires necessary align top wing fuselage bottom wing Go slowly make small corrections tail surfaces conventional con struction Use light straight balsa stock Dont forget build rudder sepa rate movable surface Although shown plans elevator can also built separate movable surface simplify itial flight trimming Sand structures apply several coats thin dope Wings Cut ribs lightweight balsa sheet Use firm straight balsa strip spars leading edges Complete both wings build indicated dihe dral Sand wings final shape includ ing leading trailing edges critical stage biwing construc tion fitting rigging wings Take time get right because what will determine well whole airplane lines up First fit bottom wing fuselage cutout minor sanding cutting may required good fit Make sure wing lined up sighting straight down model Both wing tips must equidistant tail post Spot glue lower wing place use type glue distinctive swept upper wing Curtiss Falcon series unique fin shape give OC-2 its classic Golden Age look swept upper wing also enhances stability April 1990 81 Full-Size Plans AvailableSee Page 196 LZIli ECCSFR Ir _V Ill 2IORl ecfeegh FOR PlUMeS UIRI6 MOTOR 12221102 1210222111Nl4~2l~M24 NCR SPAN NCR2 AREA A&i02 Final tweaks should made bring wings perfect alignment measured rulers pieces thread wing still place add diago nal braces cabane Dont omit braces provide tremendous strength stiffness upper wing mount Wrap thin steel copper wire around upper lower ends cabane struts spot solder place Kevlar thread heavy carpet thread fixed CyA cy anoacrylate may used lieu wire Before removing wing ca bane struts make up fit interplane struts First cut front rear struts size remember right left struts should same size Add small metal pins end reinforce strut-to wing joints Temporarily fit struts po sition carefully cut glue diagonal interplane strut dry semblies will rigid can removed wings Disassemble model add rein forcing gussets around cabane attach points heavy paper fairings around cabane struts can now attached electric motor system installed sheeting small area bottom fu selage between landing gear legs %2 balsa sheeted area should large enough HiLine switch charger plate can attached Gluing units inside will make almost flush bottom fuselage three lOO-mAh-cell flight pack must installed can moved fore aft achieve correct balance point can done gluing l-in-wide strip hard A 6 balsa inside fuselage just above bottom wing section F6 back FlO 5-in-long platform fixed fuselage uprights %2-sq crosspieces battery positioned correct center-of-gravity can sim ply glued platform few drops CyA battery needs replacement can pried loose replaced via front cockpit can also installed Velcro rubber hold-downs Use imaginationjust dont add unnec essary weight Solder necessary connections mini-electric motor system attach motor front former Fl small sheet metal screws Attach 6-in-dia plastic prop shim motor required achieve about 2 R downthrust 30 right Continued page 180 82 Model Aviation Left author showing off venerable rubber-powered OC-2 Fal con Still excellent shape after hundreds flights finally lost unusually strong thermal swept over field Above HiLine Mini-6 electric motor system complete prop three-cell 100 mAh battery switch entire rig weighs about 1 1/2 oz provides ideal power scalelike flights can keep airplane aloft up 11/2 mm Photos Tom Schmitt Performance Specialties owned operated World Pylon Racing Champion Dave Shadel customize maintain majority high performance engines used todays racing enthusiasts addition work racing engines also repair customize OS Supertigre engines welt providing warranty service repairs Bob Violett Models KBV 72 82 complete line Webra engines custom engines used some top aerobatic raang pilots world interested World Class performance please contact us weekday between 10 am 5 pm West Coast time Well look forward hearing Please send $100 descriptive brochure Visa & Mastercard accepted Aircraft Racing Headquartere PERFORMANCE SPECIALTIES Custom ABC Piston / Cylinder Assemblies True Chrome Plating Higher Performance ii Longer Wear Pcrfomwnce Spetualtde QUAWY RADIO COlNL POLU Available K&B 65 75 OS 40 VFNRP OS 61 FSR 05 61 VF OS Long Stroke 61 Rossi 40 65 81 Supertigre X-40 YS60 ES/FR YS Long Stroke Others Coming Soon Performance Specialties PO Box 4003 Carlsbad CA 92008 619 729-1658 RN Zaic Yearbooks ff need hobby shop mall never heard brand names unfamiliar because local hobby shop does stock have got point quality stick-and tissue kits manufactured cottage industries nd distributed small mail order houses such Airmans Supply couple issues back ran something history Air Trails magazine compiled As sociate Editor Ross McMullen got letter Bruce Thompson Toronto Canada saying Air Trails history complete rst started l928 Vol No dated Oc tober pulp size aviation sto ries published Street Smith Bill Barnes started Vol No February 1934 continued until September 1935 pulp size recently got copy new AMA Supply Service catalog strongly recommend books Rubber Powered Model Airplanes au thored Don Ross World Model Air planes Bill Winter having much useful how-to-do-it information cannot recommend books Charles Hmpson Grant Aero Science Free Flight Gateway Aero Science except historical interest interest have kind practical information Ross Winter works lhe recent edition MECA Swap Sheet Model Engine Collectors Association has ad gaskets number engines have need contact John Zandecki 267 Lincoln Creek Rd Centralia WA 98531 Include usual SASE same issue fells saying Anderson Spitfire 65 back production us ing original dies tooling Send SASE details Marvin Miller 250 Bronco Rd So quel CA 95073 tel 1-408/475-6858 Tell what Send SASE MECA 3007 Travis West Lake LA 70669 request ap plication blank join up wont have read Swap Sheet like Keep cards letters pictures old Ardens dont want etc coming way Bell Anchor/Biltright Continued page 78 being another form wood fiber after Good Lord wanted airplane wings made metal would have made trees out aluminum dont know what means crew tug boat says something pilots full-size airplanes say lot Lets go Get out glue little sharp knives Band-Aids materi als sense humor ull need hobby/sport should fun first foremost Dont take se riously cant chuckle yourself once poor souls stuck out faraway places can still enjoy life long have airplane some kind nd So balmy breezes brush brow sun seems just tad too hot think us down cold windy rock manag ing have what fun can Did mentic tug Swedish craft al female crew Vive le model aviation Editor did notice cover da month didnt Curtiss OC-2/SruIl Continued page 82 thrust good starting point final ac justments will made during actual flig tests Charge up battery pack mak sure everything works properly Give th entire framework final sanding before coy ering Covering finishing Plyspan simi lar lightweight tissue should used Sinci no decent silver-colored tissue available overall aluminum doped fir ish OC-2 best simulated alt minum dope over white tissue covere model white Plyspan tissue excel top upper wing wa covered yellow Plyspan lightl sprayed yellow dope After covering model shrink tis sue fine spray water preferabl brushed coat isopropyl alcoho regular 70% drugstore variety wQrk fine find alcohol shrinks tissue little gently water les prone warp light structures Pin down th structures theyre drying furthe minimize chance warping Since th AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING INFO $300BUILD & FLY THE miniMAX AWARDED Grand Champion and * Computer Designed 3 Axis Control Reserve Grand Champion Ultralight * Part 03 Ultralight * Easy Construction 1989 Sun-N-Fun Fly-In Wood Construction TEAM INC BOX 338M BRADYVILLE TN 37026 16151 765-5397 180 Model Aviation RC DESIGNS WEASEL NFoemftBa IIe dwe e mci no ze 4O-5 2 cyce 84 ESIGNS 75 Price Dr Wilmington OH 45177 513-382-2158 Hrs 4-8 pmWe accept12-8 pm Mon-FriMastercard ViseSaturdays YOURSELF
Edition: Model Aviation - 1990/04
Page Numbers: 78, 79, 80, 81, 82, 180
The&beli-Ancho Its timely look atyou can build wing correctly shown should have no trouble flyingThe bell upper solutions real planeof rudder Please note struts functionalpart imagined problemsas well facetious Make fromalerts pilot straight-grained white oak aged least modeler hadthree years pot kimchee ded Dutch roll roasted slowly over bowl really hot Tex just wanted toMex chili exactly hour 45except back plane nutes per gram per cm will deliveris straight backward rather forward have fun owna strut makes dynamite struc-Use balsa possible glue parts u etural component also makes prettysecurely bell upper part u 11111 way good substitute dynamite need rudder functional can heard over U 'Scratch' Biltrightto loosen stuck jar lids kitchenthe crashing waves scream Let caution however about usinglittle engine bell also will alert pi AM NEW RC modeling love tothem chopsticks hard chomp andlot dreaded Dutch roll would read Model Aviation comes eachyour whole face could history am acertainly avoid wooden shoe month first thing turn fea-firm believer safety Stuck out onbell also important nomenclature tured model design readersthis rock could weeks before nextpoint view about later illustrated out-of-sight cutawaysupply ship arrives Band-Aid ne power train bit unus drawing Wow thought could thatam very careful timesual perhaps modtoo Maybe noterate climesbut fairly common have worked lighthouse attendant k Trexlerparts stiff breezes needs lot Tierra del Fuego several yearspower penetration So have adapted have tried several forms airplane wheels have 35 lb Ofthe small air compressor war surplus modeling Free Flight Control Line Rubber power Sailplanes Trouble theair pressure forItalian torpedoes have equipped glow plugs dual security chain high winds just blow everything out sea flotation purposesdrive speed reduction unit drop outWhoosh s gonerageous 100000 rpm usable Speaking safety let point out an-range reduce intolerable shock little plane weighsother feature known fact ac-vibration conversion puts out connect cidents involving model airplane propellerthe power output shaft prop 42 lb flies fastoccur outer trips whirling prop enough penetrateFor absolute safety suggest removing theRubberband coupling outer two inches blade breezedangerous portionremoved plane be- engine prop comes very safeeven novice oper- ces otherwise hit idea new planeate Remember ety first knew right track little fuselagestructure straightforward intolerable shock plane designed fly 70-knot winds soand should noproblem experienced ibration heavier planes havemodelers withuncorrected astigmatism seen Model Aviation little Bell-shall say no morehere encouragelength several rubberbands earAnchor weighs 42 lb fuelyou strive forclean neat joints in-her flying days rubber dampens high wing loading resulting fromterest soundstructure absorbs spikes power curve 18-in wingspan flies fast enough to_____________________________________ penetrate breezes off deck wingnicely engine penetrates amazingly Let explain some other features thisOneis mountedwell date have sunk ocean-going rather specialized design maximumlowhightug sent Japanese whaling ship drystrength call wing spars made rolled the other ck major hull repairs Crew members cardboard little tubes cardboard very good reason tug have very nice about whole thing have taken model buildfound trouser hangers perfect job Save wire part will need Wheels stock Trexlers inflated 35ing enthusiasm now have local landing gear axle Coat wingpounds air pressure flotation theRC club hope register spars six coats clear dope setevent plane forced land sea aAMA soon possible rhaps aside dry go outside andvery real possibility amthe time reading Also have breathe deeply few minutesSince Trexlers light absorb land-received some very kind notes lo Notice positioning orientation ofing shocks well minimal structural sup-cal whale union along promises re ribs relative spars both im-port system required Use leftovertrieve model planes lost sea portant difficult explain ac-coat hanger wire wing spar source name aircraft Bell-Anchor complish fact can safely said iffor axle quite sufficient en-derived bell tail course courages conservation materials Outand also extreme weight required Dont use stuts forhere have become acutely aware thefor flight under local conditions need conservationlarge spinner filled extra three chopsticks reful observer may have noticedfour pounds weight ensure stability drawing wing mountedthe buffeting winds wings naturally whole face couldthe other high very good rea-are made wood hopefully excus become historysonable use cardboard spars rdboard _______________________________________The tail assembly very straightforwardContinued page 180 78 Model Aviation NO OCR TEXT Difficult distinguish full-size plane OC-2 heads up another flight particular airplane authors rubber-powered version flying tour strands 3A6-in rubber plane flew quite well rubber didnt have endurance afforded Electric power MANY SCALE MODEL subjects ideal new small electric motor sys tems suitable rubber power Theyre limited-application airplanes Curtiss OC-2 gives modeler op tionsits very good rubber-powered sub ject outstanding electric-powered flier also happens alltime favorite airplanes inspiration model described came beautiful Peanut design Pres Bruning flown successfully over two years rubber power before being converted mini-electric power Af ter literally hundreds flights count less hours flying lost ones surprise late afternoon thermal local flying field built according plans kept reasonably light OC-2 can flown either mini-electric rubber power Scale Free Flight fan will find model rewarding realistic flier havent yet tried mini-electric Scale flying have some Scale Free Flight exper ience give little Curtiss OC-2 Falcon go original Curt iss OC-2 Navy denFor Scale Free Flight biwing enthusiast versatile 24-in-span craft just might fit bill Specifically designed Mini-6 electric motor system model can easily adapted rubberpowered flight well EDon Srull vation famous Curtiss Falcon series Army two-seat fighters Fal con accepted use Navy 1927 planes modified aircooled Pratt & Whitney Wasp radial en gines place Packard Liberty liquid-cooled engines previously used first modified Falcons delivered Marine Corps 1928 large size heavy weight F8C- 1 however yielded performance far below required specialized fighter air craft As result airplane redesignated OC-2 relegated all-purpose role included observation air evacua tion well fighting dive-bombing last 24 OC-2s operated Marine Corps retired 1935 Construction model designed especially HiLine Mini-6 motor models 135 sq wing area puts upper size limit high-drag biplanes can flown successfully mini-electric motor systems means aircraft should built light possible must 80 Model Aviation properly trimmed achieve optimum flight performance Except wing spars leading edges use very lightweight balsa through out Also firm stiff balsa should used fuselage longerons Resist temp tation beef up reinforce structure has adequate strength its tended purpose Fuselage Build two identical sides using 342-sq balsa Join two sides adding crosspieces formers Bend ca bane struts A2-dia piano wire carefully glue formers F5 F6 before attaching latter fuselage frame Make up landing gear legs 045 piano wire attach bottom fuselage slotted crosspieces Re inforce both cabane landing gear small pieces silk Add A6 x /8-in stringers Complete cockpit decking nose sheet ing Carve nose block piece Fl shape after facing /64 ply sheet Make sure cutout fits HiLine motor Ensure have approximately 30 right thrust 20 downthrust motor mounted Cover landing gear legs heavy pa per fairings attached white glue Dont cover cabane struts paper fairings stage intend fly OC-2 some point rubber power now time install rear motor peg support strip -in-wide %2 sheet balsa front fu selage upright section Fl 1 will allow drill hole very easily add -india aluminum tube rear motor peg after model complete Sand fuselage structure apply two coats thin dope set aside until ready covering uncowled nine-cylinder Wasp radial engine OC-2 prominent scale detail Wil liams Bros plastic cylinders vacuum-formed heads make simple realistic facsimile can easily removed later dope thin ner Place fuselage lower wing assem bly either wooden blocks books tape down cant move fit ting upper wing Drill /16-dia holes upper wing gussets /2-ID aluminum tube sockets fitted Glue A-in-long pieces tubing holes carefully slide wing place Check wings approximate alignment sighting model front top sides Make minor bends ca bane wires necessary align top wing fuselage bottom wing Go slowly make small corrections tail surfaces conventional con struction Use light straight balsa stock Dont forget build rudder sepa rate movable surface Although shown plans elevator can also built separate movable surface simplify itial flight trimming Sand structures apply several coats thin dope Wings Cut ribs lightweight balsa sheet Use firm straight balsa strip spars leading edges Complete both wings build indicated dihe dral Sand wings final shape includ ing leading trailing edges critical stage biwing construc tion fitting rigging wings Take time get right because what will determine well whole airplane lines up First fit bottom wing fuselage cutout minor sanding cutting may required good fit Make sure wing lined up sighting straight down model Both wing tips must equidistant tail post Spot glue lower wing place use type glue distinctive swept upper wing Curtiss Falcon series unique fin shape give OC-2 its classic Golden Age look swept upper wing also enhances stability April 1990 81 Full-Size Plans AvailableSee Page 196 LZIli ECCSFR Ir _V Ill 2IORl ecfeegh FOR PlUMeS UIRI6 MOTOR 12221102 1210222111Nl4~2l~M24 NCR SPAN NCR2 AREA A&i02 Final tweaks should made bring wings perfect alignment measured rulers pieces thread wing still place add diago nal braces cabane Dont omit braces provide tremendous strength stiffness upper wing mount Wrap thin steel copper wire around upper lower ends cabane struts spot solder place Kevlar thread heavy carpet thread fixed CyA cy anoacrylate may used lieu wire Before removing wing ca bane struts make up fit interplane struts First cut front rear struts size remember right left struts should same size Add small metal pins end reinforce strut-to wing joints Temporarily fit struts po sition carefully cut glue diagonal interplane strut dry semblies will rigid can removed wings Disassemble model add rein forcing gussets around cabane attach points heavy paper fairings around cabane struts can now attached electric motor system installed sheeting small area bottom fu selage between landing gear legs %2 balsa sheeted area should large enough HiLine switch charger plate can attached Gluing units inside will make almost flush bottom fuselage three lOO-mAh-cell flight pack must installed can moved fore aft achieve correct balance point can done gluing l-in-wide strip hard A 6 balsa inside fuselage just above bottom wing section F6 back FlO 5-in-long platform fixed fuselage uprights %2-sq crosspieces battery positioned correct center-of-gravity can sim ply glued platform few drops CyA battery needs replacement can pried loose replaced via front cockpit can also installed Velcro rubber hold-downs Use imaginationjust dont add unnec essary weight Solder necessary connections mini-electric motor system attach motor front former Fl small sheet metal screws Attach 6-in-dia plastic prop shim motor required achieve about 2 R downthrust 30 right Continued page 180 82 Model Aviation Left author showing off venerable rubber-powered OC-2 Fal con Still excellent shape after hundreds flights finally lost unusually strong thermal swept over field Above HiLine Mini-6 electric motor system complete prop three-cell 100 mAh battery switch entire rig weighs about 1 1/2 oz provides ideal power scalelike flights can keep airplane aloft up 11/2 mm Photos Tom Schmitt Performance Specialties owned operated World Pylon Racing Champion Dave Shadel customize maintain majority high performance engines used todays racing enthusiasts addition work racing engines also repair customize OS Supertigre engines welt providing warranty service repairs Bob Violett Models KBV 72 82 complete line Webra engines custom engines used some top aerobatic raang pilots world interested World Class performance please contact us weekday between 10 am 5 pm West Coast time Well look forward hearing Please send $100 descriptive brochure Visa & Mastercard accepted Aircraft Racing Headquartere PERFORMANCE SPECIALTIES Custom ABC Piston / Cylinder Assemblies True Chrome Plating Higher Performance ii Longer Wear Pcrfomwnce Spetualtde QUAWY RADIO COlNL POLU Available K&B 65 75 OS 40 VFNRP OS 61 FSR 05 61 VF OS Long Stroke 61 Rossi 40 65 81 Supertigre X-40 YS60 ES/FR YS Long Stroke Others Coming Soon Performance Specialties PO Box 4003 Carlsbad CA 92008 619 729-1658 RN Zaic Yearbooks ff need hobby shop mall never heard brand names unfamiliar because local hobby shop does stock have got point quality stick-and tissue kits manufactured cottage industries nd distributed small mail order houses such Airmans Supply couple issues back ran something history Air Trails magazine compiled As sociate Editor Ross McMullen got letter Bruce Thompson Toronto Canada saying Air Trails history complete rst started l928 Vol No dated Oc tober pulp size aviation sto ries published Street Smith Bill Barnes started Vol No February 1934 continued until September 1935 pulp size recently got copy new AMA Supply Service catalog strongly recommend books Rubber Powered Model Airplanes au thored Don Ross World Model Air planes Bill Winter having much useful how-to-do-it information cannot recommend books Charles Hmpson Grant Aero Science Free Flight Gateway Aero Science except historical interest interest have kind practical information Ross Winter works lhe recent edition MECA Swap Sheet Model Engine Collectors Association has ad gaskets number engines have need contact John Zandecki 267 Lincoln Creek Rd Centralia WA 98531 Include usual SASE same issue fells saying Anderson Spitfire 65 back production us ing original dies tooling Send SASE details Marvin Miller 250 Bronco Rd So quel CA 95073 tel 1-408/475-6858 Tell what Send SASE MECA 3007 Travis West Lake LA 70669 request ap plication blank join up wont have read Swap Sheet like Keep cards letters pictures old Ardens dont want etc coming way Bell Anchor/Biltright Continued page 78 being another form wood fiber after Good Lord wanted airplane wings made metal would have made trees out aluminum dont know what means crew tug boat says something pilots full-size airplanes say lot Lets go Get out glue little sharp knives Band-Aids materi als sense humor ull need hobby/sport should fun first foremost Dont take se riously cant chuckle yourself once poor souls stuck out faraway places can still enjoy life long have airplane some kind nd So balmy breezes brush brow sun seems just tad too hot think us down cold windy rock manag ing have what fun can Did mentic tug Swedish craft al female crew Vive le model aviation Editor did notice cover da month didnt Curtiss OC-2/SruIl Continued page 82 thrust good starting point final ac justments will made during actual flig tests Charge up battery pack mak sure everything works properly Give th entire framework final sanding before coy ering Covering finishing Plyspan simi lar lightweight tissue should used Sinci no decent silver-colored tissue available overall aluminum doped fir ish OC-2 best simulated alt minum dope over white tissue covere model white Plyspan tissue excel top upper wing wa covered yellow Plyspan lightl sprayed yellow dope After covering model shrink tis sue fine spray water preferabl brushed coat isopropyl alcoho regular 70% drugstore variety wQrk fine find alcohol shrinks tissue little gently water les prone warp light structures Pin down th structures theyre drying furthe minimize chance warping Since th AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING INFO $300BUILD & FLY THE miniMAX AWARDED Grand Champion and * Computer Designed 3 Axis Control Reserve Grand Champion Ultralight * Part 03 Ultralight * Easy Construction 1989 Sun-N-Fun Fly-In Wood Construction TEAM INC BOX 338M BRADYVILLE TN 37026 16151 765-5397 180 Model Aviation RC DESIGNS WEASEL NFoemftBa IIe dwe e mci no ze 4O-5 2 cyce 84 ESIGNS 75 Price Dr Wilmington OH 45177 513-382-2158 Hrs 4-8 pmWe accept12-8 pm Mon-FriMastercard ViseSaturdays YOURSELF
Edition: Model Aviation - 1990/04
Page Numbers: 78, 79, 80, 81, 82, 180
The&beli-Ancho Its timely look atyou can build wing correctly shown should have no trouble flyingThe bell upper solutions real planeof rudder Please note struts functionalpart imagined problemsas well facetious Make fromalerts pilot straight-grained white oak aged least modeler hadthree years pot kimchee ded Dutch roll roasted slowly over bowl really hot Tex just wanted toMex chili exactly hour 45except back plane nutes per gram per cm will deliveris straight backward rather forward have fun owna strut makes dynamite struc-Use balsa possible glue parts u etural component also makes prettysecurely bell upper part u 11111 way good substitute dynamite need rudder functional can heard over U 'Scratch' Biltrightto loosen stuck jar lids kitchenthe crashing waves scream Let caution however about usinglittle engine bell also will alert pi AM NEW RC modeling love tothem chopsticks hard chomp andlot dreaded Dutch roll would read Model Aviation comes eachyour whole face could history am acertainly avoid wooden shoe month first thing turn fea-firm believer safety Stuck out onbell also important nomenclature tured model design readersthis rock could weeks before nextpoint view about later illustrated out-of-sight cutawaysupply ship arrives Band-Aid ne power train bit unus drawing Wow thought could thatam very careful timesual perhaps modtoo Maybe noterate climesbut fairly common have worked lighthouse attendant k Trexlerparts stiff breezes needs lot Tierra del Fuego several yearspower penetration So have adapted have tried several forms airplane wheels have 35 lb Ofthe small air compressor war surplus modeling Free Flight Control Line Rubber power Sailplanes Trouble theair pressure forItalian torpedoes have equipped glow plugs dual security chain high winds just blow everything out sea flotation purposesdrive speed reduction unit drop outWhoosh s gonerageous 100000 rpm usable Speaking safety let point out an-range reduce intolerable shock little plane weighsother feature known fact ac-vibration conversion puts out connect cidents involving model airplane propellerthe power output shaft prop 42 lb flies fastoccur outer trips whirling prop enough penetrateFor absolute safety suggest removing theRubberband coupling outer two inches blade breezedangerous portionremoved plane be- engine prop comes very safeeven novice oper- ces otherwise hit idea new planeate Remember ety first knew right track little fuselagestructure straightforward intolerable shock plane designed fly 70-knot winds soand should noproblem experienced ibration heavier planes havemodelers withuncorrected astigmatism seen Model Aviation little Bell-shall say no morehere encouragelength several rubberbands earAnchor weighs 42 lb fuelyou strive forclean neat joints in-her flying days rubber dampens high wing loading resulting fromterest soundstructure absorbs spikes power curve 18-in wingspan flies fast enough to_____________________________________ penetrate breezes off deck wingnicely engine penetrates amazingly Let explain some other features thisOneis mountedwell date have sunk ocean-going rather specialized design maximumlowhightug sent Japanese whaling ship drystrength call wing spars made rolled the other ck major hull repairs Crew members cardboard little tubes cardboard very good reason tug have very nice about whole thing have taken model buildfound trouser hangers perfect job Save wire part will need Wheels stock Trexlers inflated 35ing enthusiasm now have local landing gear axle Coat wingpounds air pressure flotation theRC club hope register spars six coats clear dope setevent plane forced land sea aAMA soon possible rhaps aside dry go outside andvery real possibility amthe time reading Also have breathe deeply few minutesSince Trexlers light absorb land-received some very kind notes lo Notice positioning orientation ofing shocks well minimal structural sup-cal whale union along promises re ribs relative spars both im-port system required Use leftovertrieve model planes lost sea portant difficult explain ac-coat hanger wire wing spar source name aircraft Bell-Anchor complish fact can safely said iffor axle quite sufficient en-derived bell tail course courages conservation materials Outand also extreme weight required Dont use stuts forhere have become acutely aware thefor flight under local conditions need conservationlarge spinner filled extra three chopsticks reful observer may have noticedfour pounds weight ensure stability drawing wing mountedthe buffeting winds wings naturally whole face couldthe other high very good rea-are made wood hopefully excus become historysonable use cardboard spars rdboard _______________________________________The tail assembly very straightforwardContinued page 180 78 Model Aviation NO OCR TEXT Difficult distinguish full-size plane OC-2 heads up another flight particular airplane authors rubber-powered version flying tour strands 3A6-in rubber plane flew quite well rubber didnt have endurance afforded Electric power MANY SCALE MODEL subjects ideal new small electric motor sys tems suitable rubber power Theyre limited-application airplanes Curtiss OC-2 gives modeler op tionsits very good rubber-powered sub ject outstanding electric-powered flier also happens alltime favorite airplanes inspiration model described came beautiful Peanut design Pres Bruning flown successfully over two years rubber power before being converted mini-electric power Af ter literally hundreds flights count less hours flying lost ones surprise late afternoon thermal local flying field built according plans kept reasonably light OC-2 can flown either mini-electric rubber power Scale Free Flight fan will find model rewarding realistic flier havent yet tried mini-electric Scale flying have some Scale Free Flight exper ience give little Curtiss OC-2 Falcon go original Curt iss OC-2 Navy denFor Scale Free Flight biwing enthusiast versatile 24-in-span craft just might fit bill Specifically designed Mini-6 electric motor system model can easily adapted rubberpowered flight well EDon Srull vation famous Curtiss Falcon series Army two-seat fighters Fal con accepted use Navy 1927 planes modified aircooled Pratt & Whitney Wasp radial en gines place Packard Liberty liquid-cooled engines previously used first modified Falcons delivered Marine Corps 1928 large size heavy weight F8C- 1 however yielded performance far below required specialized fighter air craft As result airplane redesignated OC-2 relegated all-purpose role included observation air evacua tion well fighting dive-bombing last 24 OC-2s operated Marine Corps retired 1935 Construction model designed especially HiLine Mini-6 motor models 135 sq wing area puts upper size limit high-drag biplanes can flown successfully mini-electric motor systems means aircraft should built light possible must 80 Model Aviation properly trimmed achieve optimum flight performance Except wing spars leading edges use very lightweight balsa through out Also firm stiff balsa should used fuselage longerons Resist temp tation beef up reinforce structure has adequate strength its tended purpose Fuselage Build two identical sides using 342-sq balsa Join two sides adding crosspieces formers Bend ca bane struts A2-dia piano wire carefully glue formers F5 F6 before attaching latter fuselage frame Make up landing gear legs 045 piano wire attach bottom fuselage slotted crosspieces Re inforce both cabane landing gear small pieces silk Add A6 x /8-in stringers Complete cockpit decking nose sheet ing Carve nose block piece Fl shape after facing /64 ply sheet Make sure cutout fits HiLine motor Ensure have approximately 30 right thrust 20 downthrust motor mounted Cover landing gear legs heavy pa per fairings attached white glue Dont cover cabane struts paper fairings stage intend fly OC-2 some point rubber power now time install rear motor peg support strip -in-wide %2 sheet balsa front fu selage upright section Fl 1 will allow drill hole very easily add -india aluminum tube rear motor peg after model complete Sand fuselage structure apply two coats thin dope set aside until ready covering uncowled nine-cylinder Wasp radial engine OC-2 prominent scale detail Wil liams Bros plastic cylinders vacuum-formed heads make simple realistic facsimile can easily removed later dope thin ner Place fuselage lower wing assem bly either wooden blocks books tape down cant move fit ting upper wing Drill /16-dia holes upper wing gussets /2-ID aluminum tube sockets fitted Glue A-in-long pieces tubing holes carefully slide wing place Check wings approximate alignment sighting model front top sides Make minor bends ca bane wires necessary align top wing fuselage bottom wing Go slowly make small corrections tail surfaces conventional con struction Use light straight balsa stock Dont forget build rudder sepa rate movable surface Although shown plans elevator can also built separate movable surface simplify itial flight trimming Sand structures apply several coats thin dope Wings Cut ribs lightweight balsa sheet Use firm straight balsa strip spars leading edges Complete both wings build indicated dihe dral Sand wings final shape includ ing leading trailing edges critical stage biwing construc tion fitting rigging wings Take time get right because what will determine well whole airplane lines up First fit bottom wing fuselage cutout minor sanding cutting may required good fit Make sure wing lined up sighting straight down model Both wing tips must equidistant tail post Spot glue lower wing place use type glue distinctive swept upper wing Curtiss Falcon series unique fin shape give OC-2 its classic Golden Age look swept upper wing also enhances stability April 1990 81 Full-Size Plans AvailableSee Page 196 LZIli ECCSFR Ir _V Ill 2IORl ecfeegh FOR PlUMeS UIRI6 MOTOR 12221102 1210222111Nl4~2l~M24 NCR SPAN NCR2 AREA A&i02 Final tweaks should made bring wings perfect alignment measured rulers pieces thread wing still place add diago nal braces cabane Dont omit braces provide tremendous strength stiffness upper wing mount Wrap thin steel copper wire around upper lower ends cabane struts spot solder place Kevlar thread heavy carpet thread fixed CyA cy anoacrylate may used lieu wire Before removing wing ca bane struts make up fit interplane struts First cut front rear struts size remember right left struts should same size Add small metal pins end reinforce strut-to wing joints Temporarily fit struts po sition carefully cut glue diagonal interplane strut dry semblies will rigid can removed wings Disassemble model add rein forcing gussets around cabane attach points heavy paper fairings around cabane struts can now attached electric motor system installed sheeting small area bottom fu selage between landing gear legs %2 balsa sheeted area should large enough HiLine switch charger plate can attached Gluing units inside will make almost flush bottom fuselage three lOO-mAh-cell flight pack must installed can moved fore aft achieve correct balance point can done gluing l-in-wide strip hard A 6 balsa inside fuselage just above bottom wing section F6 back FlO 5-in-long platform fixed fuselage uprights %2-sq crosspieces battery positioned correct center-of-gravity can sim ply glued platform few drops CyA battery needs replacement can pried loose replaced via front cockpit can also installed Velcro rubber hold-downs Use imaginationjust dont add unnec essary weight Solder necessary connections mini-electric motor system attach motor front former Fl small sheet metal screws Attach 6-in-dia plastic prop shim motor required achieve about 2 R downthrust 30 right Continued page 180 82 Model Aviation Left author showing off venerable rubber-powered OC-2 Fal con Still excellent shape after hundreds flights finally lost unusually strong thermal swept over field Above HiLine Mini-6 electric motor system complete prop three-cell 100 mAh battery switch entire rig weighs about 1 1/2 oz provides ideal power scalelike flights can keep airplane aloft up 11/2 mm Photos Tom Schmitt Performance Specialties owned operated World Pylon Racing Champion Dave Shadel customize maintain majority high performance engines used todays racing enthusiasts addition work racing engines also repair customize OS Supertigre engines welt providing warranty service repairs Bob Violett Models KBV 72 82 complete line Webra engines custom engines used some top aerobatic raang pilots world interested World Class performance please contact us weekday between 10 am 5 pm West Coast time Well look forward hearing Please send $100 descriptive brochure Visa & Mastercard accepted Aircraft Racing Headquartere PERFORMANCE SPECIALTIES Custom ABC Piston / Cylinder Assemblies True Chrome Plating Higher Performance ii Longer Wear Pcrfomwnce Spetualtde QUAWY RADIO COlNL POLU Available K&B 65 75 OS 40 VFNRP OS 61 FSR 05 61 VF OS Long Stroke 61 Rossi 40 65 81 Supertigre X-40 YS60 ES/FR YS Long Stroke Others Coming Soon Performance Specialties PO Box 4003 Carlsbad CA 92008 619 729-1658 RN Zaic Yearbooks ff need hobby shop mall never heard brand names unfamiliar because local hobby shop does stock have got point quality stick-and tissue kits manufactured cottage industries nd distributed small mail order houses such Airmans Supply couple issues back ran something history Air Trails magazine compiled As sociate Editor Ross McMullen got letter Bruce Thompson Toronto Canada saying Air Trails history complete rst started l928 Vol No dated Oc tober pulp size aviation sto ries published Street Smith Bill Barnes started Vol No February 1934 continued until September 1935 pulp size recently got copy new AMA Supply Service catalog strongly recommend books Rubber Powered Model Airplanes au thored Don Ross World Model Air planes Bill Winter having much useful how-to-do-it information cannot recommend books Charles Hmpson Grant Aero Science Free Flight Gateway Aero Science except historical interest interest have kind practical information Ross Winter works lhe recent edition MECA Swap Sheet Model Engine Collectors Association has ad gaskets number engines have need contact John Zandecki 267 Lincoln Creek Rd Centralia WA 98531 Include usual SASE same issue fells saying Anderson Spitfire 65 back production us ing original dies tooling Send SASE details Marvin Miller 250 Bronco Rd So quel CA 95073 tel 1-408/475-6858 Tell what Send SASE MECA 3007 Travis West Lake LA 70669 request ap plication blank join up wont have read Swap Sheet like Keep cards letters pictures old Ardens dont want etc coming way Bell Anchor/Biltright Continued page 78 being another form wood fiber after Good Lord wanted airplane wings made metal would have made trees out aluminum dont know what means crew tug boat says something pilots full-size airplanes say lot Lets go Get out glue little sharp knives Band-Aids materi als sense humor ull need hobby/sport should fun first foremost Dont take se riously cant chuckle yourself once poor souls stuck out faraway places can still enjoy life long have airplane some kind nd So balmy breezes brush brow sun seems just tad too hot think us down cold windy rock manag ing have what fun can Did mentic tug Swedish craft al female crew Vive le model aviation Editor did notice cover da month didnt Curtiss OC-2/SruIl Continued page 82 thrust good starting point final ac justments will made during actual flig tests Charge up battery pack mak sure everything works properly Give th entire framework final sanding before coy ering Covering finishing Plyspan simi lar lightweight tissue should used Sinci no decent silver-colored tissue available overall aluminum doped fir ish OC-2 best simulated alt minum dope over white tissue covere model white Plyspan tissue excel top upper wing wa covered yellow Plyspan lightl sprayed yellow dope After covering model shrink tis sue fine spray water preferabl brushed coat isopropyl alcoho regular 70% drugstore variety wQrk fine find alcohol shrinks tissue little gently water les prone warp light structures Pin down th structures theyre drying furthe minimize chance warping Since th AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING INFO $300BUILD & FLY THE miniMAX AWARDED Grand Champion and * Computer Designed 3 Axis Control Reserve Grand Champion Ultralight * Part 03 Ultralight * Easy Construction 1989 Sun-N-Fun Fly-In Wood Construction TEAM INC BOX 338M BRADYVILLE TN 37026 16151 765-5397 180 Model Aviation RC DESIGNS WEASEL NFoemftBa IIe dwe e mci no ze 4O-5 2 cyce 84 ESIGNS 75 Price Dr Wilmington OH 45177 513-382-2158 Hrs 4-8 pmWe accept12-8 pm Mon-FriMastercard ViseSaturdays YOURSELF