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 check enclosed Name City State Zip -L rmat IImIrImIrsII%J.\ Kalmbacfl IuDIIsrnng Co PO Box 1612 Waukesha WI 53187 YES Please send me copies RADIO CONTROL BUYERS GUIDE Price per copy $12SSl#12066 U Charge credit card Charge U Mastercard U Visa Card # Exp date Signature Include postage handling U S $150 Canadian foreign add 15% minimum $3001 Make payment US funda Wiaconain reaidenta add 5% aalea tax 0110 wont allow wings pinned wn piece theyll have shrunk panel small wrinkles remain dont out alcohol little water tne offending area will usually work trim out problem area re-cover Remember tiniest wrinkle uminum-colored surface will stick out proverbial sore thumb completely satisfied coverapply two three coats Sig Litecoat similar low-shrink dope Using airlightly fog coat Sig butyrate similar aluminum dope Remember finish light Mask spray registration numbers US Marine Corps markings upper wing Cut masks tracing pa per apply light coat 3-M Scotch Spray Mount Adhesive hold place 3-M repositionable contact ce ment very low tack perfect type work Marine Corps logo Ace Spades squadron emblem too complex masking drew painted tis sue paper cut out adhered model double-sided tape could also attached white glue Detailing nine-cylinder Wasp radial engine important maintaining OC 2s distinctive character basic engine can built starting Williams Bros plastic cylinders cylinders can also made paper tubes wrapped string case cylinder heads valve cov ers will have carved scraps balsa formed plastic Since nine cylinders found easiest build complete cylinder head scraps wood plastic sheet bits tubing vacuum formed nine identi cal heads master mounted atop paper cylinders wrapped heavy string simulate cooling fins painted completed cylinders black gunmetal carefully mounted nine equally spaced holes cut Fl After cylinders attached F wire Build could flying IF YOU WANT IT TO FLY LIKE ARROW IT MUST BE BUILT LIKE ONE Ill Build Any Kit Finish can supply complete planes framed up kits Complete Planes Ill Test Fly Call Phil Good 2157410433 POBox 352 Langi nine PA 19047 April 1990 181 scuffle ground isnt some thing should have face own may have gotten own dont think model should stand After two team So join up airplanes thatll stick through thick thin Duracmft Inc 71007 Orwd Grove Oriw Royal Oak M 48067 DuraBat 40-size 4-channel aerobatic trainer pushrods added balsa nose pie finishes up nose section added ter final flight trimming thrust adjw ments have made cant find set wheels tI proper size luckily perfect set fro old Guillow model turning ov balsa wheels easily done Start sandwich A-in balsa sheet laminated side /32 ply disk 1% in diam ter Glue piece A-in dowel throui hub center chuck wheel blar drill Using various sticks sandp per turn carve wheels shape course OC-2 wont look right fI ing around crew pilot ol server figures can carved balsa foam Additional surface details can inked technical pen sm Sharpie brand waterproof felt-tip pen great interesting surface details c seen photos OC-2 contain Pete Bowers fascinating book Cut-ti Aircraft 1907-1947 Assemble model making sure ti flying surfaces line up properly Use eithi airplane-type glue lighter bon small spots CyA CyA will facilita disassembly future repairs maint nance After adding interplane struts stab lizer struts landing gear wires di plane ready flight testing th point second thoughts about flying th pretty little ship may crop up Dont b timidthis birds terrific flier wi look impressive air Flying Check flying surfaces warps straighten find before attempt ing fly Check balance point Instal battery pack whatever method using shifting necessary achieve th center-of-gravity shown plans th rear cabane strut correct spot Test flying should done calm weath er over softest surface can fin tall grass best Try some hand glides rule out major trim problems Since th glide will fairly slow steep about want accomplish glide test make sure model doesnt turn sharpi either side pitch up stall pitc down dive built carefully mdi cated plans text mode should fly close final trim right off th board Adjust tail surfaces slightly correc unwanted tendencies showed up ii glide test slow straight somewha mushy glide what youre after th stage next step toward full-power testinl will short low-power flight tests stall 4A-in-dia Williams Bros prof available HiLine prop will noi fly model will provide enough thrusi extended power glide level flighi airplane properly trimmed first tests charge battery enough 15- 20-second motor run Make slight adjustments rudder 182 Model Aviation Dynamic Duo Durability Stand Ready Help Take Encounters Planet Earth DuraPlane II 25-size 3-channel basic flight trainer ahilizer achieve smooth level power slight indication turn l turned large left circles power glide mode Gradually increase run time use mall pieces clay weight nose tail r either wing tip achieve perfect light path possible youre com letely satisfied install 5- 6-in-dia lastic prop increase charge time little power needed try 7-inha Peck-Polymers plastic prop trimmed powered properly Falcon will climb very slow re distic rate wide circles 1 /2 ninutes cruise its maximum alti ude short before descending low wide circles gentle landings aIm day near-maximum charges ThE WIlQMATEKTM rhe extra large handle bends 1/8-1/4 coils Si 32-3I1& music wire Wire creep eliminated ur ANTI-KREEP WIRE LOCKIN free catalog also has hardware accessories JOM COMPANY 114 WashIngton Terr Dept Waukegan IL 60085 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $200 1st US R/C FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 t7151 524-2985 Hiller paddles Since Bell control sys tem lacks stabilizer damper Helicop ter stable aerobatic flight 150 lb powered 350cc gasoline en gine very large Helicopter dont want get anywhere near 10-ftdia main rotor MF-l uses 60-size Competitor main rotor blades tail blades Notice pictures Schluter fixedpitch S-head S-head Schluter Helibaby Hughes 500 body system introduced Mr Schluter back 1978 Its two-bladed ar ticulated rotor flap hinge offset confused teetering head rotor Flap hinge offset provides better control re sponse freely teetering two-bladed main rotor such used full-size Jet Ranger Kyoshos new Concept 30 ex ample collective-pitch Helicopter two-bladed flap hinge offset articulated main rotor Another picture shows Hirobos DDF Dual Dampened Flapping head GMP Stork DDF combines features teetering rotor head artic ulated flap hinge offset entire hub can teeter about center pin ro tor blade can flap up down individually result softnesss makes very stable flight characteristics original Hirobo Shuttle introduced 1985 also individual blade flapping design However flapping head overly soft excellent ginners also caused blades strike tail boom hard landings Hirobo rec ognized problem has equipped its Shuttles since 1987 floating axle design similar found Schluter Champion Miniature Aircraft X Cell new head Shuttle both stable aerobatic experiment removed stabi lizer bar assembly see Stork would perform flybarless Helicopter April 1990 183 model will turn breathtaking flights over two minutes glide may resem ble Wakefield Free Flighter can sniff out thermals tempted After Falcon Heli Rotors/Wang Continued page 88 VENO MOUNTS TNE VIBRATION lOLLER Fad end fuel pOaf flee axes ieoiefan fa 25 Ia f 20 an0nea ea-txau F S al S Uslia f ieaalf engfle nouffe Typaai aibfefran reduCtIOn 70% Ma 80% Oft kit COnSIStS OfOuntt isolate Ina pointS seoond 1~~ weetra, iubna jnSfuOtlOnS Sena Sf200 CheCk O Inane OldOt Fe kif OAA PRODUCTS P0 SOS aReas SARASOTA FL 342S3 Sf33774252 FL residents add 72 Caret tax IRFORMATION eand SASS Bob Fiorenzej Hobby Center Inc Dealer Yellow AircraftJLE UPS Orders Shipped Daily Now Available Faatcove coasting Mate,al Visit Showroom 35 win D sney Watidi NEW custow Building Sern Ce 420 WesO SR 434407 327-6383 Winter Springs FL 32708Fax 407 327-7148
Edition: Model Aviation - 1990/04
Page Numbers: 80, 81, 82, 180, 181, 182, 183
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 check enclosed Name City State Zip -L rmat IImIrImIrsII%J.\ Kalmbacfl IuDIIsrnng Co PO Box 1612 Waukesha WI 53187 YES Please send me copies RADIO CONTROL BUYERS GUIDE Price per copy $12SSl#12066 U Charge credit card Charge U Mastercard U Visa Card # Exp date Signature Include postage handling U S $150 Canadian foreign add 15% minimum $3001 Make payment US funda Wiaconain reaidenta add 5% aalea tax 0110 wont allow wings pinned wn piece theyll have shrunk panel small wrinkles remain dont out alcohol little water tne offending area will usually work trim out problem area re-cover Remember tiniest wrinkle uminum-colored surface will stick out proverbial sore thumb completely satisfied coverapply two three coats Sig Litecoat similar low-shrink dope Using airlightly fog coat Sig butyrate similar aluminum dope Remember finish light Mask spray registration numbers US Marine Corps markings upper wing Cut masks tracing pa per apply light coat 3-M Scotch Spray Mount Adhesive hold place 3-M repositionable contact ce ment very low tack perfect type work Marine Corps logo Ace Spades squadron emblem too complex masking drew painted tis sue paper cut out adhered model double-sided tape could also attached white glue Detailing nine-cylinder Wasp radial engine important maintaining OC 2s distinctive character basic engine can built starting Williams Bros plastic cylinders cylinders can also made paper tubes wrapped string case cylinder heads valve cov ers will have carved scraps balsa formed plastic Since nine cylinders found easiest build complete cylinder head scraps wood plastic sheet bits tubing vacuum formed nine identi cal heads master mounted atop paper cylinders wrapped heavy string simulate cooling fins painted completed cylinders black gunmetal carefully mounted nine equally spaced holes cut Fl After cylinders attached F wire Build could flying IF YOU WANT IT TO FLY LIKE ARROW IT MUST BE BUILT LIKE ONE Ill Build Any Kit Finish can supply complete planes framed up kits Complete Planes Ill Test Fly Call Phil Good 2157410433 POBox 352 Langi nine PA 19047 April 1990 181 scuffle ground isnt some thing should have face own may have gotten own dont think model should stand After two team So join up airplanes thatll stick through thick thin Duracmft Inc 71007 Orwd Grove Oriw Royal Oak M 48067 DuraBat 40-size 4-channel aerobatic trainer pushrods added balsa nose pie finishes up nose section added ter final flight trimming thrust adjw ments have made cant find set wheels tI proper size luckily perfect set fro old Guillow model turning ov balsa wheels easily done Start sandwich A-in balsa sheet laminated side /32 ply disk 1% in diam ter Glue piece A-in dowel throui hub center chuck wheel blar drill Using various sticks sandp per turn carve wheels shape course OC-2 wont look right fI ing around crew pilot ol server figures can carved balsa foam Additional surface details can inked technical pen sm Sharpie brand waterproof felt-tip pen great interesting surface details c seen photos OC-2 contain Pete Bowers fascinating book Cut-ti Aircraft 1907-1947 Assemble model making sure ti flying surfaces line up properly Use eithi airplane-type glue lighter bon small spots CyA CyA will facilita disassembly future repairs maint nance After adding interplane struts stab lizer struts landing gear wires di plane ready flight testing th point second thoughts about flying th pretty little ship may crop up Dont b timidthis birds terrific flier wi look impressive air Flying Check flying surfaces warps straighten find before attempt ing fly Check balance point Instal battery pack whatever method using shifting necessary achieve th center-of-gravity shown plans th rear cabane strut correct spot Test flying should done calm weath er over softest surface can fin tall grass best Try some hand glides rule out major trim problems Since th glide will fairly slow steep about want accomplish glide test make sure model doesnt turn sharpi either side pitch up stall pitc down dive built carefully mdi cated plans text mode should fly close final trim right off th board Adjust tail surfaces slightly correc unwanted tendencies showed up ii glide test slow straight somewha mushy glide what youre after th stage next step toward full-power testinl will short low-power flight tests stall 4A-in-dia Williams Bros prof available HiLine prop will noi fly model will provide enough thrusi extended power glide level flighi airplane properly trimmed first tests charge battery enough 15- 20-second motor run Make slight adjustments rudder 182 Model Aviation Dynamic Duo Durability Stand Ready Help Take Encounters Planet Earth DuraPlane II 25-size 3-channel basic flight trainer ahilizer achieve smooth level power slight indication turn l turned large left circles power glide mode Gradually increase run time use mall pieces clay weight nose tail r either wing tip achieve perfect light path possible youre com letely satisfied install 5- 6-in-dia lastic prop increase charge time little power needed try 7-inha Peck-Polymers plastic prop trimmed powered properly Falcon will climb very slow re distic rate wide circles 1 /2 ninutes cruise its maximum alti ude short before descending low wide circles gentle landings aIm day near-maximum charges ThE WIlQMATEKTM rhe extra large handle bends 1/8-1/4 coils Si 32-3I1& music wire Wire creep eliminated ur ANTI-KREEP WIRE LOCKIN free catalog also has hardware accessories JOM COMPANY 114 WashIngton Terr Dept Waukegan IL 60085 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $200 1st US R/C FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 t7151 524-2985 Hiller paddles Since Bell control sys tem lacks stabilizer damper Helicop ter stable aerobatic flight 150 lb powered 350cc gasoline en gine very large Helicopter dont want get anywhere near 10-ftdia main rotor MF-l uses 60-size Competitor main rotor blades tail blades Notice pictures Schluter fixedpitch S-head S-head Schluter Helibaby Hughes 500 body system introduced Mr Schluter back 1978 Its two-bladed ar ticulated rotor flap hinge offset confused teetering head rotor Flap hinge offset provides better control re sponse freely teetering two-bladed main rotor such used full-size Jet Ranger Kyoshos new Concept 30 ex ample collective-pitch Helicopter two-bladed flap hinge offset articulated main rotor Another picture shows Hirobos DDF Dual Dampened Flapping head GMP Stork DDF combines features teetering rotor head artic ulated flap hinge offset entire hub can teeter about center pin ro tor blade can flap up down individually result softnesss makes very stable flight characteristics original Hirobo Shuttle introduced 1985 also individual blade flapping design However flapping head overly soft excellent ginners also caused blades strike tail boom hard landings Hirobo rec ognized problem has equipped its Shuttles since 1987 floating axle design similar found Schluter Champion Miniature Aircraft X Cell new head Shuttle both stable aerobatic experiment removed stabi lizer bar assembly see Stork would perform flybarless Helicopter April 1990 183 model will turn breathtaking flights over two minutes glide may resem ble Wakefield Free Flighter can sniff out thermals tempted After Falcon Heli Rotors/Wang Continued page 88 VENO MOUNTS TNE VIBRATION lOLLER Fad end fuel pOaf flee axes ieoiefan fa 25 Ia f 20 an0nea ea-txau F S al S Uslia f ieaalf engfle nouffe Typaai aibfefran reduCtIOn 70% Ma 80% Oft kit COnSIStS OfOuntt isolate Ina pointS seoond 1~~ weetra, iubna jnSfuOtlOnS Sena Sf200 CheCk O Inane OldOt Fe kif OAA PRODUCTS P0 SOS aReas SARASOTA FL 342S3 Sf33774252 FL residents add 72 Caret tax IRFORMATION eand SASS Bob Fiorenzej Hobby Center Inc Dealer Yellow AircraftJLE UPS Orders Shipped Daily Now Available Faatcove coasting Mate,al Visit Showroom 35 win D sney Watidi NEW custow Building Sern Ce 420 WesO SR 434407 327-6383 Winter Springs FL 32708Fax 407 327-7148
Edition: Model Aviation - 1990/04
Page Numbers: 80, 81, 82, 180, 181, 182, 183
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 check enclosed Name City State Zip -L rmat IImIrImIrsII%J.\ Kalmbacfl IuDIIsrnng Co PO Box 1612 Waukesha WI 53187 YES Please send me copies RADIO CONTROL BUYERS GUIDE Price per copy $12SSl#12066 U Charge credit card Charge U Mastercard U Visa Card # Exp date Signature Include postage handling U S $150 Canadian foreign add 15% minimum $3001 Make payment US funda Wiaconain reaidenta add 5% aalea tax 0110 wont allow wings pinned wn piece theyll have shrunk panel small wrinkles remain dont out alcohol little water tne offending area will usually work trim out problem area re-cover Remember tiniest wrinkle uminum-colored surface will stick out proverbial sore thumb completely satisfied coverapply two three coats Sig Litecoat similar low-shrink dope Using airlightly fog coat Sig butyrate similar aluminum dope Remember finish light Mask spray registration numbers US Marine Corps markings upper wing Cut masks tracing pa per apply light coat 3-M Scotch Spray Mount Adhesive hold place 3-M repositionable contact ce ment very low tack perfect type work Marine Corps logo Ace Spades squadron emblem too complex masking drew painted tis sue paper cut out adhered model double-sided tape could also attached white glue Detailing nine-cylinder Wasp radial engine important maintaining OC 2s distinctive character basic engine can built starting Williams Bros plastic cylinders cylinders can also made paper tubes wrapped string case cylinder heads valve cov ers will have carved scraps balsa formed plastic Since nine cylinders found easiest build complete cylinder head scraps wood plastic sheet bits tubing vacuum formed nine identi cal heads master mounted atop paper cylinders wrapped heavy string simulate cooling fins painted completed cylinders black gunmetal carefully mounted nine equally spaced holes cut Fl After cylinders attached F wire Build could flying IF YOU WANT IT TO FLY LIKE ARROW IT MUST BE BUILT LIKE ONE Ill Build Any Kit Finish can supply complete planes framed up kits Complete Planes Ill Test Fly Call Phil Good 2157410433 POBox 352 Langi nine PA 19047 April 1990 181 scuffle ground isnt some thing should have face own may have gotten own dont think model should stand After two team So join up airplanes thatll stick through thick thin Duracmft Inc 71007 Orwd Grove Oriw Royal Oak M 48067 DuraBat 40-size 4-channel aerobatic trainer pushrods added balsa nose pie finishes up nose section added ter final flight trimming thrust adjw ments have made cant find set wheels tI proper size luckily perfect set fro old Guillow model turning ov balsa wheels easily done Start sandwich A-in balsa sheet laminated side /32 ply disk 1% in diam ter Glue piece A-in dowel throui hub center chuck wheel blar drill Using various sticks sandp per turn carve wheels shape course OC-2 wont look right fI ing around crew pilot ol server figures can carved balsa foam Additional surface details can inked technical pen sm Sharpie brand waterproof felt-tip pen great interesting surface details c seen photos OC-2 contain Pete Bowers fascinating book Cut-ti Aircraft 1907-1947 Assemble model making sure ti flying surfaces line up properly Use eithi airplane-type glue lighter bon small spots CyA CyA will facilita disassembly future repairs maint nance After adding interplane struts stab lizer struts landing gear wires di plane ready flight testing th point second thoughts about flying th pretty little ship may crop up Dont b timidthis birds terrific flier wi look impressive air Flying Check flying surfaces warps straighten find before attempt ing fly Check balance point Instal battery pack whatever method using shifting necessary achieve th center-of-gravity shown plans th rear cabane strut correct spot Test flying should done calm weath er over softest surface can fin tall grass best Try some hand glides rule out major trim problems Since th glide will fairly slow steep about want accomplish glide test make sure model doesnt turn sharpi either side pitch up stall pitc down dive built carefully mdi cated plans text mode should fly close final trim right off th board Adjust tail surfaces slightly correc unwanted tendencies showed up ii glide test slow straight somewha mushy glide what youre after th stage next step toward full-power testinl will short low-power flight tests stall 4A-in-dia Williams Bros prof available HiLine prop will noi fly model will provide enough thrusi extended power glide level flighi airplane properly trimmed first tests charge battery enough 15- 20-second motor run Make slight adjustments rudder 182 Model Aviation Dynamic Duo Durability Stand Ready Help Take Encounters Planet Earth DuraPlane II 25-size 3-channel basic flight trainer ahilizer achieve smooth level power slight indication turn l turned large left circles power glide mode Gradually increase run time use mall pieces clay weight nose tail r either wing tip achieve perfect light path possible youre com letely satisfied install 5- 6-in-dia lastic prop increase charge time little power needed try 7-inha Peck-Polymers plastic prop trimmed powered properly Falcon will climb very slow re distic rate wide circles 1 /2 ninutes cruise its maximum alti ude short before descending low wide circles gentle landings aIm day near-maximum charges ThE WIlQMATEKTM rhe extra large handle bends 1/8-1/4 coils Si 32-3I1& music wire Wire creep eliminated ur ANTI-KREEP WIRE LOCKIN free catalog also has hardware accessories JOM COMPANY 114 WashIngton Terr Dept Waukegan IL 60085 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $200 1st US R/C FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 t7151 524-2985 Hiller paddles Since Bell control sys tem lacks stabilizer damper Helicop ter stable aerobatic flight 150 lb powered 350cc gasoline en gine very large Helicopter dont want get anywhere near 10-ftdia main rotor MF-l uses 60-size Competitor main rotor blades tail blades Notice pictures Schluter fixedpitch S-head S-head Schluter Helibaby Hughes 500 body system introduced Mr Schluter back 1978 Its two-bladed ar ticulated rotor flap hinge offset confused teetering head rotor Flap hinge offset provides better control re sponse freely teetering two-bladed main rotor such used full-size Jet Ranger Kyoshos new Concept 30 ex ample collective-pitch Helicopter two-bladed flap hinge offset articulated main rotor Another picture shows Hirobos DDF Dual Dampened Flapping head GMP Stork DDF combines features teetering rotor head artic ulated flap hinge offset entire hub can teeter about center pin ro tor blade can flap up down individually result softnesss makes very stable flight characteristics original Hirobo Shuttle introduced 1985 also individual blade flapping design However flapping head overly soft excellent ginners also caused blades strike tail boom hard landings Hirobo rec ognized problem has equipped its Shuttles since 1987 floating axle design similar found Schluter Champion Miniature Aircraft X Cell new head Shuttle both stable aerobatic experiment removed stabi lizer bar assembly see Stork would perform flybarless Helicopter April 1990 183 model will turn breathtaking flights over two minutes glide may resem ble Wakefield Free Flighter can sniff out thermals tempted After Falcon Heli Rotors/Wang Continued page 88 VENO MOUNTS TNE VIBRATION lOLLER Fad end fuel pOaf flee axes ieoiefan fa 25 Ia f 20 an0nea ea-txau F S al S Uslia f ieaalf engfle nouffe Typaai aibfefran reduCtIOn 70% Ma 80% Oft kit COnSIStS OfOuntt isolate Ina pointS seoond 1~~ weetra, iubna jnSfuOtlOnS Sena Sf200 CheCk O Inane OldOt Fe kif OAA PRODUCTS P0 SOS aReas SARASOTA FL 342S3 Sf33774252 FL residents add 72 Caret tax IRFORMATION eand SASS Bob Fiorenzej Hobby Center Inc Dealer Yellow AircraftJLE UPS Orders Shipped Daily Now Available Faatcove coasting Mate,al Visit Showroom 35 win D sney Watidi NEW custow Building Sern Ce 420 WesO SR 434407 327-6383 Winter Springs FL 32708Fax 407 327-7148
Edition: Model Aviation - 1990/04
Page Numbers: 80, 81, 82, 180, 181, 182, 183
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 check enclosed Name City State Zip -L rmat IImIrImIrsII%J.\ Kalmbacfl IuDIIsrnng Co PO Box 1612 Waukesha WI 53187 YES Please send me copies RADIO CONTROL BUYERS GUIDE Price per copy $12SSl#12066 U Charge credit card Charge U Mastercard U Visa Card # Exp date Signature Include postage handling U S $150 Canadian foreign add 15% minimum $3001 Make payment US funda Wiaconain reaidenta add 5% aalea tax 0110 wont allow wings pinned wn piece theyll have shrunk panel small wrinkles remain dont out alcohol little water tne offending area will usually work trim out problem area re-cover Remember tiniest wrinkle uminum-colored surface will stick out proverbial sore thumb completely satisfied coverapply two three coats Sig Litecoat similar low-shrink dope Using airlightly fog coat Sig butyrate similar aluminum dope Remember finish light Mask spray registration numbers US Marine Corps markings upper wing Cut masks tracing pa per apply light coat 3-M Scotch Spray Mount Adhesive hold place 3-M repositionable contact ce ment very low tack perfect type work Marine Corps logo Ace Spades squadron emblem too complex masking drew painted tis sue paper cut out adhered model double-sided tape could also attached white glue Detailing nine-cylinder Wasp radial engine important maintaining OC 2s distinctive character basic engine can built starting Williams Bros plastic cylinders cylinders can also made paper tubes wrapped string case cylinder heads valve cov ers will have carved scraps balsa formed plastic Since nine cylinders found easiest build complete cylinder head scraps wood plastic sheet bits tubing vacuum formed nine identi cal heads master mounted atop paper cylinders wrapped heavy string simulate cooling fins painted completed cylinders black gunmetal carefully mounted nine equally spaced holes cut Fl After cylinders attached F wire Build could flying IF YOU WANT IT TO FLY LIKE ARROW IT MUST BE BUILT LIKE ONE Ill Build Any Kit Finish can supply complete planes framed up kits Complete Planes Ill Test Fly Call Phil Good 2157410433 POBox 352 Langi nine PA 19047 April 1990 181 scuffle ground isnt some thing should have face own may have gotten own dont think model should stand After two team So join up airplanes thatll stick through thick thin Duracmft Inc 71007 Orwd Grove Oriw Royal Oak M 48067 DuraBat 40-size 4-channel aerobatic trainer pushrods added balsa nose pie finishes up nose section added ter final flight trimming thrust adjw ments have made cant find set wheels tI proper size luckily perfect set fro old Guillow model turning ov balsa wheels easily done Start sandwich A-in balsa sheet laminated side /32 ply disk 1% in diam ter Glue piece A-in dowel throui hub center chuck wheel blar drill Using various sticks sandp per turn carve wheels shape course OC-2 wont look right fI ing around crew pilot ol server figures can carved balsa foam Additional surface details can inked technical pen sm Sharpie brand waterproof felt-tip pen great interesting surface details c seen photos OC-2 contain Pete Bowers fascinating book Cut-ti Aircraft 1907-1947 Assemble model making sure ti flying surfaces line up properly Use eithi airplane-type glue lighter bon small spots CyA CyA will facilita disassembly future repairs maint nance After adding interplane struts stab lizer struts landing gear wires di plane ready flight testing th point second thoughts about flying th pretty little ship may crop up Dont b timidthis birds terrific flier wi look impressive air Flying Check flying surfaces warps straighten find before attempt ing fly Check balance point Instal battery pack whatever method using shifting necessary achieve th center-of-gravity shown plans th rear cabane strut correct spot Test flying should done calm weath er over softest surface can fin tall grass best Try some hand glides rule out major trim problems Since th glide will fairly slow steep about want accomplish glide test make sure model doesnt turn sharpi either side pitch up stall pitc down dive built carefully mdi cated plans text mode should fly close final trim right off th board Adjust tail surfaces slightly correc unwanted tendencies showed up ii glide test slow straight somewha mushy glide what youre after th stage next step toward full-power testinl will short low-power flight tests stall 4A-in-dia Williams Bros prof available HiLine prop will noi fly model will provide enough thrusi extended power glide level flighi airplane properly trimmed first tests charge battery enough 15- 20-second motor run Make slight adjustments rudder 182 Model Aviation Dynamic Duo Durability Stand Ready Help Take Encounters Planet Earth DuraPlane II 25-size 3-channel basic flight trainer ahilizer achieve smooth level power slight indication turn l turned large left circles power glide mode Gradually increase run time use mall pieces clay weight nose tail r either wing tip achieve perfect light path possible youre com letely satisfied install 5- 6-in-dia lastic prop increase charge time little power needed try 7-inha Peck-Polymers plastic prop trimmed powered properly Falcon will climb very slow re distic rate wide circles 1 /2 ninutes cruise its maximum alti ude short before descending low wide circles gentle landings aIm day near-maximum charges ThE WIlQMATEKTM rhe extra large handle bends 1/8-1/4 coils Si 32-3I1& music wire Wire creep eliminated ur ANTI-KREEP WIRE LOCKIN free catalog also has hardware accessories JOM COMPANY 114 WashIngton Terr Dept Waukegan IL 60085 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $200 1st US R/C FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 t7151 524-2985 Hiller paddles Since Bell control sys tem lacks stabilizer damper Helicop ter stable aerobatic flight 150 lb powered 350cc gasoline en gine very large Helicopter dont want get anywhere near 10-ftdia main rotor MF-l uses 60-size Competitor main rotor blades tail blades Notice pictures Schluter fixedpitch S-head S-head Schluter Helibaby Hughes 500 body system introduced Mr Schluter back 1978 Its two-bladed ar ticulated rotor flap hinge offset confused teetering head rotor Flap hinge offset provides better control re sponse freely teetering two-bladed main rotor such used full-size Jet Ranger Kyoshos new Concept 30 ex ample collective-pitch Helicopter two-bladed flap hinge offset articulated main rotor Another picture shows Hirobos DDF Dual Dampened Flapping head GMP Stork DDF combines features teetering rotor head artic ulated flap hinge offset entire hub can teeter about center pin ro tor blade can flap up down individually result softnesss makes very stable flight characteristics original Hirobo Shuttle introduced 1985 also individual blade flapping design However flapping head overly soft excellent ginners also caused blades strike tail boom hard landings Hirobo rec ognized problem has equipped its Shuttles since 1987 floating axle design similar found Schluter Champion Miniature Aircraft X Cell new head Shuttle both stable aerobatic experiment removed stabi lizer bar assembly see Stork would perform flybarless Helicopter April 1990 183 model will turn breathtaking flights over two minutes glide may resem ble Wakefield Free Flighter can sniff out thermals tempted After Falcon Heli Rotors/Wang Continued page 88 VENO MOUNTS TNE VIBRATION lOLLER Fad end fuel pOaf flee axes ieoiefan fa 25 Ia f 20 an0nea ea-txau F S al S Uslia f ieaalf engfle nouffe Typaai aibfefran reduCtIOn 70% Ma 80% Oft kit COnSIStS OfOuntt isolate Ina pointS seoond 1~~ weetra, iubna jnSfuOtlOnS Sena Sf200 CheCk O Inane OldOt Fe kif OAA PRODUCTS P0 SOS aReas SARASOTA FL 342S3 Sf33774252 FL residents add 72 Caret tax IRFORMATION eand SASS Bob Fiorenzej Hobby Center Inc Dealer Yellow AircraftJLE UPS Orders Shipped Daily Now Available Faatcove coasting Mate,al Visit Showroom 35 win D sney Watidi NEW custow Building Sern Ce 420 WesO SR 434407 327-6383 Winter Springs FL 32708Fax 407 327-7148
Edition: Model Aviation - 1990/04
Page Numbers: 80, 81, 82, 180, 181, 182, 183
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 check enclosed Name City State Zip -L rmat IImIrImIrsII%J.\ Kalmbacfl IuDIIsrnng Co PO Box 1612 Waukesha WI 53187 YES Please send me copies RADIO CONTROL BUYERS GUIDE Price per copy $12SSl#12066 U Charge credit card Charge U Mastercard U Visa Card # Exp date Signature Include postage handling U S $150 Canadian foreign add 15% minimum $3001 Make payment US funda Wiaconain reaidenta add 5% aalea tax 0110 wont allow wings pinned wn piece theyll have shrunk panel small wrinkles remain dont out alcohol little water tne offending area will usually work trim out problem area re-cover Remember tiniest wrinkle uminum-colored surface will stick out proverbial sore thumb completely satisfied coverapply two three coats Sig Litecoat similar low-shrink dope Using airlightly fog coat Sig butyrate similar aluminum dope Remember finish light Mask spray registration numbers US Marine Corps markings upper wing Cut masks tracing pa per apply light coat 3-M Scotch Spray Mount Adhesive hold place 3-M repositionable contact ce ment very low tack perfect type work Marine Corps logo Ace Spades squadron emblem too complex masking drew painted tis sue paper cut out adhered model double-sided tape could also attached white glue Detailing nine-cylinder Wasp radial engine important maintaining OC 2s distinctive character basic engine can built starting Williams Bros plastic cylinders cylinders can also made paper tubes wrapped string case cylinder heads valve cov ers will have carved scraps balsa formed plastic Since nine cylinders found easiest build complete cylinder head scraps wood plastic sheet bits tubing vacuum formed nine identi cal heads master mounted atop paper cylinders wrapped heavy string simulate cooling fins painted completed cylinders black gunmetal carefully mounted nine equally spaced holes cut Fl After cylinders attached F wire Build could flying IF YOU WANT IT TO FLY LIKE ARROW IT MUST BE BUILT LIKE ONE Ill Build Any Kit Finish can supply complete planes framed up kits Complete Planes Ill Test Fly Call Phil Good 2157410433 POBox 352 Langi nine PA 19047 April 1990 181 scuffle ground isnt some thing should have face own may have gotten own dont think model should stand After two team So join up airplanes thatll stick through thick thin Duracmft Inc 71007 Orwd Grove Oriw Royal Oak M 48067 DuraBat 40-size 4-channel aerobatic trainer pushrods added balsa nose pie finishes up nose section added ter final flight trimming thrust adjw ments have made cant find set wheels tI proper size luckily perfect set fro old Guillow model turning ov balsa wheels easily done Start sandwich A-in balsa sheet laminated side /32 ply disk 1% in diam ter Glue piece A-in dowel throui hub center chuck wheel blar drill Using various sticks sandp per turn carve wheels shape course OC-2 wont look right fI ing around crew pilot ol server figures can carved balsa foam Additional surface details can inked technical pen sm Sharpie brand waterproof felt-tip pen great interesting surface details c seen photos OC-2 contain Pete Bowers fascinating book Cut-ti Aircraft 1907-1947 Assemble model making sure ti flying surfaces line up properly Use eithi airplane-type glue lighter bon small spots CyA CyA will facilita disassembly future repairs maint nance After adding interplane struts stab lizer struts landing gear wires di plane ready flight testing th point second thoughts about flying th pretty little ship may crop up Dont b timidthis birds terrific flier wi look impressive air Flying Check flying surfaces warps straighten find before attempt ing fly Check balance point Instal battery pack whatever method using shifting necessary achieve th center-of-gravity shown plans th rear cabane strut correct spot Test flying should done calm weath er over softest surface can fin tall grass best Try some hand glides rule out major trim problems Since th glide will fairly slow steep about want accomplish glide test make sure model doesnt turn sharpi either side pitch up stall pitc down dive built carefully mdi cated plans text mode should fly close final trim right off th board Adjust tail surfaces slightly correc unwanted tendencies showed up ii glide test slow straight somewha mushy glide what youre after th stage next step toward full-power testinl will short low-power flight tests stall 4A-in-dia Williams Bros prof available HiLine prop will noi fly model will provide enough thrusi extended power glide level flighi airplane properly trimmed first tests charge battery enough 15- 20-second motor run Make slight adjustments rudder 182 Model Aviation Dynamic Duo Durability Stand Ready Help Take Encounters Planet Earth DuraPlane II 25-size 3-channel basic flight trainer ahilizer achieve smooth level power slight indication turn l turned large left circles power glide mode Gradually increase run time use mall pieces clay weight nose tail r either wing tip achieve perfect light path possible youre com letely satisfied install 5- 6-in-dia lastic prop increase charge time little power needed try 7-inha Peck-Polymers plastic prop trimmed powered properly Falcon will climb very slow re distic rate wide circles 1 /2 ninutes cruise its maximum alti ude short before descending low wide circles gentle landings aIm day near-maximum charges ThE WIlQMATEKTM rhe extra large handle bends 1/8-1/4 coils Si 32-3I1& music wire Wire creep eliminated ur ANTI-KREEP WIRE LOCKIN free catalog also has hardware accessories JOM COMPANY 114 WashIngton Terr Dept Waukegan IL 60085 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $200 1st US R/C FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 t7151 524-2985 Hiller paddles Since Bell control sys tem lacks stabilizer damper Helicop ter stable aerobatic flight 150 lb powered 350cc gasoline en gine very large Helicopter dont want get anywhere near 10-ftdia main rotor MF-l uses 60-size Competitor main rotor blades tail blades Notice pictures Schluter fixedpitch S-head S-head Schluter Helibaby Hughes 500 body system introduced Mr Schluter back 1978 Its two-bladed ar ticulated rotor flap hinge offset confused teetering head rotor Flap hinge offset provides better control re sponse freely teetering two-bladed main rotor such used full-size Jet Ranger Kyoshos new Concept 30 ex ample collective-pitch Helicopter two-bladed flap hinge offset articulated main rotor Another picture shows Hirobos DDF Dual Dampened Flapping head GMP Stork DDF combines features teetering rotor head artic ulated flap hinge offset entire hub can teeter about center pin ro tor blade can flap up down individually result softnesss makes very stable flight characteristics original Hirobo Shuttle introduced 1985 also individual blade flapping design However flapping head overly soft excellent ginners also caused blades strike tail boom hard landings Hirobo rec ognized problem has equipped its Shuttles since 1987 floating axle design similar found Schluter Champion Miniature Aircraft X Cell new head Shuttle both stable aerobatic experiment removed stabi lizer bar assembly see Stork would perform flybarless Helicopter April 1990 183 model will turn breathtaking flights over two minutes glide may resem ble Wakefield Free Flighter can sniff out thermals tempted After Falcon Heli Rotors/Wang Continued page 88 VENO MOUNTS TNE VIBRATION lOLLER Fad end fuel pOaf flee axes ieoiefan fa 25 Ia f 20 an0nea ea-txau F S al S Uslia f ieaalf engfle nouffe Typaai aibfefran reduCtIOn 70% Ma 80% Oft kit COnSIStS OfOuntt isolate Ina pointS seoond 1~~ weetra, iubna jnSfuOtlOnS Sena Sf200 CheCk O Inane OldOt Fe kif OAA PRODUCTS P0 SOS aReas SARASOTA FL 342S3 Sf33774252 FL residents add 72 Caret tax IRFORMATION eand SASS Bob Fiorenzej Hobby Center Inc Dealer Yellow AircraftJLE UPS Orders Shipped Daily Now Available Faatcove coasting Mate,al Visit Showroom 35 win D sney Watidi NEW custow Building Sern Ce 420 WesO SR 434407 327-6383 Winter Springs FL 32708Fax 407 327-7148
Edition: Model Aviation - 1990/04
Page Numbers: 80, 81, 82, 180, 181, 182, 183
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 check enclosed Name City State Zip -L rmat IImIrImIrsII%J.\ Kalmbacfl IuDIIsrnng Co PO Box 1612 Waukesha WI 53187 YES Please send me copies RADIO CONTROL BUYERS GUIDE Price per copy $12SSl#12066 U Charge credit card Charge U Mastercard U Visa Card # Exp date Signature Include postage handling U S $150 Canadian foreign add 15% minimum $3001 Make payment US funda Wiaconain reaidenta add 5% aalea tax 0110 wont allow wings pinned wn piece theyll have shrunk panel small wrinkles remain dont out alcohol little water tne offending area will usually work trim out problem area re-cover Remember tiniest wrinkle uminum-colored surface will stick out proverbial sore thumb completely satisfied coverapply two three coats Sig Litecoat similar low-shrink dope Using airlightly fog coat Sig butyrate similar aluminum dope Remember finish light Mask spray registration numbers US Marine Corps markings upper wing Cut masks tracing pa per apply light coat 3-M Scotch Spray Mount Adhesive hold place 3-M repositionable contact ce ment very low tack perfect type work Marine Corps logo Ace Spades squadron emblem too complex masking drew painted tis sue paper cut out adhered model double-sided tape could also attached white glue Detailing nine-cylinder Wasp radial engine important maintaining OC 2s distinctive character basic engine can built starting Williams Bros plastic cylinders cylinders can also made paper tubes wrapped string case cylinder heads valve cov ers will have carved scraps balsa formed plastic Since nine cylinders found easiest build complete cylinder head scraps wood plastic sheet bits tubing vacuum formed nine identi cal heads master mounted atop paper cylinders wrapped heavy string simulate cooling fins painted completed cylinders black gunmetal carefully mounted nine equally spaced holes cut Fl After cylinders attached F wire Build could flying IF YOU WANT IT TO FLY LIKE ARROW IT MUST BE BUILT LIKE ONE Ill Build Any Kit Finish can supply complete planes framed up kits Complete Planes Ill Test Fly Call Phil Good 2157410433 POBox 352 Langi nine PA 19047 April 1990 181 scuffle ground isnt some thing should have face own may have gotten own dont think model should stand After two team So join up airplanes thatll stick through thick thin Duracmft Inc 71007 Orwd Grove Oriw Royal Oak M 48067 DuraBat 40-size 4-channel aerobatic trainer pushrods added balsa nose pie finishes up nose section added ter final flight trimming thrust adjw ments have made cant find set wheels tI proper size luckily perfect set fro old Guillow model turning ov balsa wheels easily done Start sandwich A-in balsa sheet laminated side /32 ply disk 1% in diam ter Glue piece A-in dowel throui hub center chuck wheel blar drill Using various sticks sandp per turn carve wheels shape course OC-2 wont look right fI ing around crew pilot ol server figures can carved balsa foam Additional surface details can inked technical pen sm Sharpie brand waterproof felt-tip pen great interesting surface details c seen photos OC-2 contain Pete Bowers fascinating book Cut-ti Aircraft 1907-1947 Assemble model making sure ti flying surfaces line up properly Use eithi airplane-type glue lighter bon small spots CyA CyA will facilita disassembly future repairs maint nance After adding interplane struts stab lizer struts landing gear wires di plane ready flight testing th point second thoughts about flying th pretty little ship may crop up Dont b timidthis birds terrific flier wi look impressive air Flying Check flying surfaces warps straighten find before attempt ing fly Check balance point Instal battery pack whatever method using shifting necessary achieve th center-of-gravity shown plans th rear cabane strut correct spot Test flying should done calm weath er over softest surface can fin tall grass best Try some hand glides rule out major trim problems Since th glide will fairly slow steep about want accomplish glide test make sure model doesnt turn sharpi either side pitch up stall pitc down dive built carefully mdi cated plans text mode should fly close final trim right off th board Adjust tail surfaces slightly correc unwanted tendencies showed up ii glide test slow straight somewha mushy glide what youre after th stage next step toward full-power testinl will short low-power flight tests stall 4A-in-dia Williams Bros prof available HiLine prop will noi fly model will provide enough thrusi extended power glide level flighi airplane properly trimmed first tests charge battery enough 15- 20-second motor run Make slight adjustments rudder 182 Model Aviation Dynamic Duo Durability Stand Ready Help Take Encounters Planet Earth DuraPlane II 25-size 3-channel basic flight trainer ahilizer achieve smooth level power slight indication turn l turned large left circles power glide mode Gradually increase run time use mall pieces clay weight nose tail r either wing tip achieve perfect light path possible youre com letely satisfied install 5- 6-in-dia lastic prop increase charge time little power needed try 7-inha Peck-Polymers plastic prop trimmed powered properly Falcon will climb very slow re distic rate wide circles 1 /2 ninutes cruise its maximum alti ude short before descending low wide circles gentle landings aIm day near-maximum charges ThE WIlQMATEKTM rhe extra large handle bends 1/8-1/4 coils Si 32-3I1& music wire Wire creep eliminated ur ANTI-KREEP WIRE LOCKIN free catalog also has hardware accessories JOM COMPANY 114 WashIngton Terr Dept Waukegan IL 60085 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $200 1st US R/C FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 t7151 524-2985 Hiller paddles Since Bell control sys tem lacks stabilizer damper Helicop ter stable aerobatic flight 150 lb powered 350cc gasoline en gine very large Helicopter dont want get anywhere near 10-ftdia main rotor MF-l uses 60-size Competitor main rotor blades tail blades Notice pictures Schluter fixedpitch S-head S-head Schluter Helibaby Hughes 500 body system introduced Mr Schluter back 1978 Its two-bladed ar ticulated rotor flap hinge offset confused teetering head rotor Flap hinge offset provides better control re sponse freely teetering two-bladed main rotor such used full-size Jet Ranger Kyoshos new Concept 30 ex ample collective-pitch Helicopter two-bladed flap hinge offset articulated main rotor Another picture shows Hirobos DDF Dual Dampened Flapping head GMP Stork DDF combines features teetering rotor head artic ulated flap hinge offset entire hub can teeter about center pin ro tor blade can flap up down individually result softnesss makes very stable flight characteristics original Hirobo Shuttle introduced 1985 also individual blade flapping design However flapping head overly soft excellent ginners also caused blades strike tail boom hard landings Hirobo rec ognized problem has equipped its Shuttles since 1987 floating axle design similar found Schluter Champion Miniature Aircraft X Cell new head Shuttle both stable aerobatic experiment removed stabi lizer bar assembly see Stork would perform flybarless Helicopter April 1990 183 model will turn breathtaking flights over two minutes glide may resem ble Wakefield Free Flighter can sniff out thermals tempted After Falcon Heli Rotors/Wang Continued page 88 VENO MOUNTS TNE VIBRATION lOLLER Fad end fuel pOaf flee axes ieoiefan fa 25 Ia f 20 an0nea ea-txau F S al S Uslia f ieaalf engfle nouffe Typaai aibfefran reduCtIOn 70% Ma 80% Oft kit COnSIStS OfOuntt isolate Ina pointS seoond 1~~ weetra, iubna jnSfuOtlOnS Sena Sf200 CheCk O Inane OldOt Fe kif OAA PRODUCTS P0 SOS aReas SARASOTA FL 342S3 Sf33774252 FL residents add 72 Caret tax IRFORMATION eand SASS Bob Fiorenzej Hobby Center Inc Dealer Yellow AircraftJLE UPS Orders Shipped Daily Now Available Faatcove coasting Mate,al Visit Showroom 35 win D sney Watidi NEW custow Building Sern Ce 420 WesO SR 434407 327-6383 Winter Springs FL 32708Fax 407 327-7148
Edition: Model Aviation - 1990/04
Page Numbers: 80, 81, 82, 180, 181, 182, 183
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 check enclosed Name City State Zip -L rmat IImIrImIrsII%J.\ Kalmbacfl IuDIIsrnng Co PO Box 1612 Waukesha WI 53187 YES Please send me copies RADIO CONTROL BUYERS GUIDE Price per copy $12SSl#12066 U Charge credit card Charge U Mastercard U Visa Card # Exp date Signature Include postage handling U S $150 Canadian foreign add 15% minimum $3001 Make payment US funda Wiaconain reaidenta add 5% aalea tax 0110 wont allow wings pinned wn piece theyll have shrunk panel small wrinkles remain dont out alcohol little water tne offending area will usually work trim out problem area re-cover Remember tiniest wrinkle uminum-colored surface will stick out proverbial sore thumb completely satisfied coverapply two three coats Sig Litecoat similar low-shrink dope Using airlightly fog coat Sig butyrate similar aluminum dope Remember finish light Mask spray registration numbers US Marine Corps markings upper wing Cut masks tracing pa per apply light coat 3-M Scotch Spray Mount Adhesive hold place 3-M repositionable contact ce ment very low tack perfect type work Marine Corps logo Ace Spades squadron emblem too complex masking drew painted tis sue paper cut out adhered model double-sided tape could also attached white glue Detailing nine-cylinder Wasp radial engine important maintaining OC 2s distinctive character basic engine can built starting Williams Bros plastic cylinders cylinders can also made paper tubes wrapped string case cylinder heads valve cov ers will have carved scraps balsa formed plastic Since nine cylinders found easiest build complete cylinder head scraps wood plastic sheet bits tubing vacuum formed nine identi cal heads master mounted atop paper cylinders wrapped heavy string simulate cooling fins painted completed cylinders black gunmetal carefully mounted nine equally spaced holes cut Fl After cylinders attached F wire Build could flying IF YOU WANT IT TO FLY LIKE ARROW IT MUST BE BUILT LIKE ONE Ill Build Any Kit Finish can supply complete planes framed up kits Complete Planes Ill Test Fly Call Phil Good 2157410433 POBox 352 Langi nine PA 19047 April 1990 181 scuffle ground isnt some thing should have face own may have gotten own dont think model should stand After two team So join up airplanes thatll stick through thick thin Duracmft Inc 71007 Orwd Grove Oriw Royal Oak M 48067 DuraBat 40-size 4-channel aerobatic trainer pushrods added balsa nose pie finishes up nose section added ter final flight trimming thrust adjw ments have made cant find set wheels tI proper size luckily perfect set fro old Guillow model turning ov balsa wheels easily done Start sandwich A-in balsa sheet laminated side /32 ply disk 1% in diam ter Glue piece A-in dowel throui hub center chuck wheel blar drill Using various sticks sandp per turn carve wheels shape course OC-2 wont look right fI ing around crew pilot ol server figures can carved balsa foam Additional surface details can inked technical pen sm Sharpie brand waterproof felt-tip pen great interesting surface details c seen photos OC-2 contain Pete Bowers fascinating book Cut-ti Aircraft 1907-1947 Assemble model making sure ti flying surfaces line up properly Use eithi airplane-type glue lighter bon small spots CyA CyA will facilita disassembly future repairs maint nance After adding interplane struts stab lizer struts landing gear wires di plane ready flight testing th point second thoughts about flying th pretty little ship may crop up Dont b timidthis birds terrific flier wi look impressive air Flying Check flying surfaces warps straighten find before attempt ing fly Check balance point Instal battery pack whatever method using shifting necessary achieve th center-of-gravity shown plans th rear cabane strut correct spot Test flying should done calm weath er over softest surface can fin tall grass best Try some hand glides rule out major trim problems Since th glide will fairly slow steep about want accomplish glide test make sure model doesnt turn sharpi either side pitch up stall pitc down dive built carefully mdi cated plans text mode should fly close final trim right off th board Adjust tail surfaces slightly correc unwanted tendencies showed up ii glide test slow straight somewha mushy glide what youre after th stage next step toward full-power testinl will short low-power flight tests stall 4A-in-dia Williams Bros prof available HiLine prop will noi fly model will provide enough thrusi extended power glide level flighi airplane properly trimmed first tests charge battery enough 15- 20-second motor run Make slight adjustments rudder 182 Model Aviation Dynamic Duo Durability Stand Ready Help Take Encounters Planet Earth DuraPlane II 25-size 3-channel basic flight trainer ahilizer achieve smooth level power slight indication turn l turned large left circles power glide mode Gradually increase run time use mall pieces clay weight nose tail r either wing tip achieve perfect light path possible youre com letely satisfied install 5- 6-in-dia lastic prop increase charge time little power needed try 7-inha Peck-Polymers plastic prop trimmed powered properly Falcon will climb very slow re distic rate wide circles 1 /2 ninutes cruise its maximum alti ude short before descending low wide circles gentle landings aIm day near-maximum charges ThE WIlQMATEKTM rhe extra large handle bends 1/8-1/4 coils Si 32-3I1& music wire Wire creep eliminated ur ANTI-KREEP WIRE LOCKIN free catalog also has hardware accessories JOM COMPANY 114 WashIngton Terr Dept Waukegan IL 60085 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $200 1st US R/C FLIGHT SCHOOL 521 S Sawyer. Shawano WI 54166 t7151 524-2985 Hiller paddles Since Bell control sys tem lacks stabilizer damper Helicop ter stable aerobatic flight 150 lb powered 350cc gasoline en gine very large Helicopter dont want get anywhere near 10-ftdia main rotor MF-l uses 60-size Competitor main rotor blades tail blades Notice pictures Schluter fixedpitch S-head S-head Schluter Helibaby Hughes 500 body system introduced Mr Schluter back 1978 Its two-bladed ar ticulated rotor flap hinge offset confused teetering head rotor Flap hinge offset provides better control re sponse freely teetering two-bladed main rotor such used full-size Jet Ranger Kyoshos new Concept 30 ex ample collective-pitch Helicopter two-bladed flap hinge offset articulated main rotor Another picture shows Hirobos DDF Dual Dampened Flapping head GMP Stork DDF combines features teetering rotor head artic ulated flap hinge offset entire hub can teeter about center pin ro tor blade can flap up down individually result softnesss makes very stable flight characteristics original Hirobo Shuttle introduced 1985 also individual blade flapping design However flapping head overly soft excellent ginners also caused blades strike tail boom hard landings Hirobo rec ognized problem has equipped its Shuttles since 1987 floating axle design similar found Schluter Champion Miniature Aircraft X Cell new head Shuttle both stable aerobatic experiment removed stabi lizer bar assembly see Stork would perform flybarless Helicopter April 1990 183 model will turn breathtaking flights over two minutes glide may resem ble Wakefield Free Flighter can sniff out thermals tempted After Falcon Heli Rotors/Wang Continued page 88 VENO MOUNTS TNE VIBRATION lOLLER Fad end fuel pOaf flee axes ieoiefan fa 25 Ia f 20 an0nea ea-txau F S al S Uslia f ieaalf engfle nouffe Typaai aibfefran reduCtIOn 70% Ma 80% Oft kit COnSIStS OfOuntt isolate Ina pointS seoond 1~~ weetra, iubna jnSfuOtlOnS Sena Sf200 CheCk O Inane OldOt Fe kif OAA PRODUCTS P0 SOS aReas SARASOTA FL 342S3 Sf33774252 FL residents add 72 Caret tax IRFORMATION eand SASS Bob Fiorenzej Hobby Center Inc Dealer Yellow AircraftJLE UPS Orders Shipped Daily Now Available Faatcove coasting Mate,al Visit Showroom 35 win D sney Watidi NEW custow Building Sern Ce 420 WesO SR 434407 327-6383 Winter Springs FL 32708Fax 407 327-7148