The Dance ft touch come alt run seek control can lift belong raise hand show ready what destined accuracy machine grace weightless snow perform beauty can know Together climb stars attack ending ground turn away laugh joy shouting crowd dance circles leap away another part time spin loop blow em away Because love fly now its time end dance lasts just moments dies Thus bring dawn touch ground graceful fly Author unknown NICE huh Thanks Tom Lay sending way says found amongst old love beads flower child era whichby clas sic carbon-dating methodsshould work out early Sixties suspect author might just still around claim credit Let know just agree Control Line Stunt column place modeling might find poetry acceptable form diver tissement suspect artistic element Polands Stunt ace Piotr Zawada uses clever removable tail wheel plywood fe male receptacle model receives spring-clip end music wire strut height tail can easily adjusted suit various flying surfaces using struts different lengths common almost Stunt fliers predisposes appreciate inherent beauties other forms expression first read Dance listening broadcast Vladimir Horowitz playing Mo zart appreciative audience native Rus sia first such performance since left country some 60 years before personal way emotional response audience wel coming him back triggered similar feelings tween myself thoughts lifelong affair Continued page 181 Fancher warms up graphics program new computer again show different types warps flaps L build flap shown R will eliminate possible types warps Ted has very good discussion flap warps monththeir symptoms cures April 1989 77 Conoi Line Aerobatics Ted Fancher 158 Flying Cloud isle Foster City CA 94404 Germanys Claus Maikis latest masterpiece proves Bob Whitely isnt Stunter suffers twin-engine sadomasochism Fancher thinks power twin 35s Stunt legend Bob Palmer recently donated famous Thunderbird AMA Muse um Although current compietitor CLPA still loves event THREE FLAP PROBLEMS UItJED FROhI T OF II ThO MXBLXI3NED FLJP I-tORN ERNB THE RIGHT WAY TO SHAPE FLAP [ CUT FIJi 5IVE FROhI FIRS 1/4 SWfl StE CILUIN FOR DETAILS FLAP 94W5D DI THIS IWER IU HAIlS EJAL TIWER TOP tWIT ROtTINI Nil UDi ITT DfAICS UI4lANT RIlIZIUT TDITEFUIES JIG IN FLAtE SETUSEN TIJSIC lITRE AS SIWI CI HUSIC Unit 111TH BALM BLOOCS IXJED TO BUILDING SUWACE 14 lITRE-IfLUAIlS tilT maTS FOR HINIS ORE SIWTFNT FLAPS OR ELEIJATIUS CERN [JUWE TOP HALF AS SINL/U MDXC lITRE dIG/4 1111 ALF TWS FLAPSIDE UIjSLLY TNC FLW amount experimentation props might required find right combination other extreme model such SE 5A frontal area engine cowling very large allowing small portion prop either end effective case con siderable experimentation might required find right prop type diameter pitch com bination engine used might find after considerable experimentation en gine used too small case good starting point prop se lection might manufacturers recommenda tion size engine type model Remember well-matched engine prop model combination will go long way toward suring better model performance limiting en gine damage Please send ideas comments contest activity re ports especially photos CL Scale activity address listed very top column CL Aerobatics/Fancher Continued page 77 Precision Aerobatics listening walked shop re veled emotions evoked personal crea tions relationship Stunt masters genius Sure genius inspired seek excellence craft assu redly art form What Citation other Fancher playing Werwages Ares just smidgen personal touch Horowitz interpret ing Mozart will impact moment charged no small degree presence nearly com plete Ares am preparing upeom ing Nostalgia Era events design last built teenager would stir excitement appreciation its beauty nearly 30 years later lends credence belief just balsa glue emotionally charged moment ac cepting Walker Cup 1979 Bob Gieseke stated Stunt lot just toy air planes Although statement intensely personal message Bob spoke volumes about nature Stunt event people fly Stunt artistic expression Darn right other hand maybe third glass good California Cabernet Naaah stopped flying field day after Christ mas eat hearts out East Coasters ran across young Paul Pomposo trying trim Out new Imitation may recall last month discussed resolved problem Pauls hard-starting powerless ST 46which dis covered improperly reassembled Well week Paul ship air hoping try some patterns agreed stick around work him Right off bat could tell serious problem level flight outboard wing substantially up inverted down Obviously some thing out whack Remember review Coxs Super Chip munk few months back talked about del eterious means bad Whitely effects condition Because lift_of wing right angles wings span ship banked circle some lift trying fly ship toward pilot case Chip munk lack tip weight caused problem Thus outboard wing elevated model flying either upright inverted Pauls case wing banked inward plane upright thereby reducing line tension banked outward plane flying inverted thus increasing line tension often symptom warped wing Pauls case wasnt wing warped flaps outboard flap Stock fog InemEat Shipment ZENOAH 04237 Cu In$24995 NOW Qoodra 40 CDI 3berlng wItI eprlng otartrl 816896 ROg Osedre 4001225 wIth Brioghello flywheel 96 Reg Onedre 40 Power Aeeonbly Only poInt *4806 QUADRA orZENOAH REPAIR $1000 plo pert Jin Moe. ERCOUPEPLANS $2306 FULL-KIT $23990 Jin Manner TOMAHAWKPLANS $2395 FLiLLKIT $2295 Jint Monoer J3 KITTENPLANS $295 FIJILKIT $2195 SIG KADET SENIOR KIT $55 nova $2206 SIG KADET SENIORITA KIT $3906 nec $1606 ZENOAH G-22 ZENOAH G39 5 FLOATS 401/4 no1 coren $2195 conpleoe kit $4706 10 teWI WHEELS $3906 P/K Spring Starter $245 PLANS SUPER STEARMAN 1/4 Godfrey $3990 1/3 TAYLORCRAFT 01/2 CUB Nelit $395 MGA Pointed Pilot Bsntn 1/4 so. WW1 WW2 Civ $195 Servos H402 42 $1295 Wodd 518 Irge nodelo $445 Peetno 9 nine ER TOP FUT DYNAThRUST 39160FF us Qoedre FUEL TANKS10 no $7522 FIBERGLASS ARROW SHAFTS 5/16 22 long 6 $115 24 00cr SevicO $290 POStage Book Cheok or.. JIM MESSERS QUALITY MODEL PRODUCTS Valley Wow Di Box 43 Allagany NY 14706 bowed down inboard bowed up gether acted like ailerons control sur faces control movement about roll axis untethered airplanes precisely what doing Pauls Imitation restraining action control lines Pauls ship would have performing continu ous unsolicited barrel rolls three ways flaps can cause problem First case Pauls ship can simply warped usually re sult covering being shrunk unequally Second flap horn itself may bent left right arms arent parallel holes flaps may have drilled parallel another flaps arent neutral same time Third flaps themselves may have im properly tapered have built-in twist root tip problems easily noted rear aircraft See com puter-generated sketches first third cases may never have problem IF both flaps twisted warped same direction case flaps wont effective helping model turn di rection other least wont get undesirable bank can live al though down deep youll know aint PROPS Worlds Largest Range Fiberglass Carbon Fiber Props Sizes 1 /2A Quarter Scale 023 and4 Blades Increased Availability 1989 Send SASE Information TOM DIXON 1938 Peachtree Suite 401 Atlanta GA 30309 April 1989 181 Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want take guesswork out finishing gemgBe Ph 419-797-2208P0 Box 2480 usky Ohio 44870 Electric F ight Has Seake2 ootls LIghtweIght 12 toooey back Adjustable sw$tcbiog pointarantee Solderless tertolnal rosy hookop ON/OFF Controller 2495 Power save relght ye, bigh efficIency 0$6V too 2$ Sine 22x53x63 Add 510$ shippiog Coliforolo residents odd 65% ii63 Tos Send Cbeek seoney order Come othJjHigh Sky FotoIa eooootor3929 KanSaS St #9 otbrvooe7 000San DlegoCA 92104 experience GREAT PERFORMANCE WING AREA 900 sq ins SPAN 72 ins WING AREA 900 sq ins series Sport Scale Balsa ARF Air planes 1404 cycle equivalent motors Happy Holidays Available direct select hobby shops g ZIMPRO MARKETING good could Hint wings level both upright inverted flight overcome urge inspect flaps closely Youll sieep bet ter night generally easy correct warps depending type finish flap covered heat-shrink plastic simply reshrink covering holding flap twisted opposite di rection original warp amount roughly equal original warp released should return half amount twist hope will make straight doped finish depending severity warp flap can straightened either heat ing steam over kettle blocking place overnight extreme cases ap plying heavy coat clear dope some re tarder will soften paint clear down wood paint dry enough han dle marring finish block flap up allow dry couple days best solution warped flap . never warp first place avoid warps careful shrink covering evenly cover ing film painting especially dopes shrink tremendously always put equal amounts paint both top bot tom flaps put less paint bot tom save weight youll probably end up warp gets progressively worse extra paint top shrinks bottom youve painted epoxies urethane paint some kind youve got real problem since paints soften additional coats impervious moisture have some success injecting water wood hypodermic needle hinge line holes wont show blocking place Dont hold breath waiting ever worse comes worst may have re move warped flaps replace Ouch cure second problem simple Sim ply grasp flaps vicinity horn arms twist until both flaps neutral same time way oniy simple dont break flaps doing Some horns very tough tweak twealting scientific word lam trimming new ship al ways take four pieces %-in plywood can use grip flaps twealting spreads pressure over larger area prevents horn arm breaking through flap An smarter method inset piece hardwood flap accept horn allows tweak hardwood rather balsaThe third problem improperly tapered flaps result improper building procedure must addressed during construction fending units must removed replaced Generally speaking Stunt flaps tapered root tip example root may three inches chord tip inch Most builders shape flaps decrease thickness hinge line trailing edge both aesthetic reasons because good aero dynamic design principles require proper way to remove equal amounts wood both top AND bottom flap Unfortunately also difficult way things through ignorance builder shapes flap side will building twist will difficult impossible correct after fact method use insure equal thickness top bottom taper thus untwisted flap Check out drawings de tails Lets assume want thickness taper 14 hinge line 1/16 trailing edge Obtain three pieces 36-in-long music wire diameters 14 %2 /16 Cut flap top view shape 4-in firm balsa Now jig flap between A-in %2-in wires blocking wires place scrap balsa Hot Stuffed directly building board Using razor plane coarse sandpaper shape flap until sanding block touches both wires entire length flap will insure thickness taper uniform Remove flap rejig WITH THE UN SHAPED SIDE UP time jig flap tween lA.in 6-in wires Repeat shaping until flap flat-tapered between both wires procedure will have removed equal amounts wood top bottom flap will straight centerlines hinge line trailing edge parallel ailing edge exactly /16 thick root tip Cover finish care fully should never have deal un wanted banks such plagued Paul less JET ENGINES DOYLEJETS Catalog $500 letter $12O0lyear DOYL EJET 4015 San Jacinto #404G Houston TX 77004713 440-4744 NEWSPACESAVING FUEL CONTAINER Fitsinyourbox2-1I2x73I5x91I5 Tough Rigid Polyethylene udes tubing erners lock tubing tlvough cap acti postage North Products PO Box 18419 Cleveland Heights OH 44118 1SesI SSAE caaog shee cimpete ie .-.Li.I IJU 182 Model Aviation SOUTHWEST RC FLYING Year round flight school Six day course $350 Learn fly planes Send SASE complete info 2818 Carolina NE Albuquerque NM 87110 505 881-3799 MILLS METMLS BOOKS oPRECISION INSTRUMENTS 1000 oF otor COMPLETE CETELOG 200 C4MPIIU res CA 2100 8 Selma baa 5prgfae1d iran 45505 0808513 3228562 PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-482-6188 IMPORTED DIESELS AUAuroreDCEDMVV5MUsEnya PAWTaplln Standard S A/C 05640 Acre ne VlntageSport & Contest Send 6100 laformatlom CARLSON ENGINE IMPORTS 314 Eaet Marconi PhoenIx AZ 85022 course youve built warp wing itself ry another time Did say stuff simple Naw its art form Remember final item limited number Fancher style 3 -in-dia circular bellcranks once again available now being produced master machinist John Schwickrath 1660 Laurel St San Carlos CA 94070 price beautifully machined aluminum brass steel unit $15 plus $150 shipping handling Needless say am big fan circular format fliers have tried convinced well Try think youll like CL Racing/Ballard Continued page 78 Paul Tune would back up % le allow model slow down before grabbed course use well-padded glove also helps reduce impact model caught during routine stop have enclosed photograph showing three Race pilots attempting share same 2 -ft-radius center circle pilots Karen Foster Bill Bischoff shirt out Melvin Schuette As can see have pressed extremely close together order have shortest possible distance cen ter circle model pilot walks very wide circle aircraft has fly much farther lap slowed perhaps 5-10 mph righter circle pilot walks closer holds hand chest shorter will effective length control lines effect size cir cle used pilot shortening line length has definite positive influence speed model New Nelson 15 engine understand new Nelson 15 works purported have 15mm shaft aimed Scale Rac ing Henry Nelson importing some very expen sive ball bearings Switzerland busy producing cranks cases forit hoped improved performance Racing Nelson compe tition engines will testing new modifi cation late February 1989 hope able receive immediately test re port results next column As always solicit comments ideas photographs CL Speed/Hempel Continued page 79 centerEd total duration 2160 prop used Zanins model made carbon fiber material has radius three inches pitch varies six inches hub 58 tip fuel tank Zanins model mounted direcriy metal pan via two screws mounted rubber British team members using new Irvine 15 prototype engines appears few engines have built Peter Halman UK turned best rime team flight 29147km/hr Peter showing off new engine fuel shutoff looks similar ones used Russians exhaust timing Irvine 15 1900 intakes 1300 crankshaft intake du ration approximately 2250 Coninued page 184 U mu. UE mu mu mm mm mm m m U U 516 GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL INT QUAT A4QN 0% Nitroti*$1075 5% Nitrohane6 $525$12Th 1Q% Nitro 15% Nitro than3Q $6$1675 35% Nitromefihahe $ 95 25$2695 SIG PREMIUM 4-STROKE FUEL 10% Nitromethane$1425 15% Nitromethane$1625 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrcos soujeet ehonge oth0ot notice See aealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 THE JOURNAL THE AIRPLANE 1920 1940TuE EARLY AEROPLANE Leo Opdycke EditorKenn Rust Editor wwi AERO 19001919 SKYWAYS 19201940 two Journals contain information current projects orical research news museums airshows shop notes technical drawings data information paint color photographs aeroplanes engines parts sale scale modelling material PLUS wants disposals news current publications kinds PLUS more. Sample copies $4 Published WORLD WAR 1 2eplzn& INC 15 Crescent Road Pottghkecpste NY 12601 USA 914 473-3679 April 1989 183
Edition: Model Aviation - 1989/04
Page Numbers: 77, 181, 182, 183
The Dance ft touch come alt run seek control can lift belong raise hand show ready what destined accuracy machine grace weightless snow perform beauty can know Together climb stars attack ending ground turn away laugh joy shouting crowd dance circles leap away another part time spin loop blow em away Because love fly now its time end dance lasts just moments dies Thus bring dawn touch ground graceful fly Author unknown NICE huh Thanks Tom Lay sending way says found amongst old love beads flower child era whichby clas sic carbon-dating methodsshould work out early Sixties suspect author might just still around claim credit Let know just agree Control Line Stunt column place modeling might find poetry acceptable form diver tissement suspect artistic element Polands Stunt ace Piotr Zawada uses clever removable tail wheel plywood fe male receptacle model receives spring-clip end music wire strut height tail can easily adjusted suit various flying surfaces using struts different lengths common almost Stunt fliers predisposes appreciate inherent beauties other forms expression first read Dance listening broadcast Vladimir Horowitz playing Mo zart appreciative audience native Rus sia first such performance since left country some 60 years before personal way emotional response audience wel coming him back triggered similar feelings tween myself thoughts lifelong affair Continued page 181 Fancher warms up graphics program new computer again show different types warps flaps L build flap shown R will eliminate possible types warps Ted has very good discussion flap warps monththeir symptoms cures April 1989 77 Conoi Line Aerobatics Ted Fancher 158 Flying Cloud isle Foster City CA 94404 Germanys Claus Maikis latest masterpiece proves Bob Whitely isnt Stunter suffers twin-engine sadomasochism Fancher thinks power twin 35s Stunt legend Bob Palmer recently donated famous Thunderbird AMA Muse um Although current compietitor CLPA still loves event THREE FLAP PROBLEMS UItJED FROhI T OF II ThO MXBLXI3NED FLJP I-tORN ERNB THE RIGHT WAY TO SHAPE FLAP [ CUT FIJi 5IVE FROhI FIRS 1/4 SWfl StE CILUIN FOR DETAILS FLAP 94W5D DI THIS IWER IU HAIlS EJAL TIWER TOP tWIT ROtTINI Nil UDi ITT DfAICS UI4lANT RIlIZIUT TDITEFUIES JIG IN FLAtE SETUSEN TIJSIC lITRE AS SIWI CI HUSIC Unit 111TH BALM BLOOCS IXJED TO BUILDING SUWACE 14 lITRE-IfLUAIlS tilT maTS FOR HINIS ORE SIWTFNT FLAPS OR ELEIJATIUS CERN [JUWE TOP HALF AS SINL/U MDXC lITRE dIG/4 1111 ALF TWS FLAPSIDE UIjSLLY TNC FLW amount experimentation props might required find right combination other extreme model such SE 5A frontal area engine cowling very large allowing small portion prop either end effective case con siderable experimentation might required find right prop type diameter pitch com bination engine used might find after considerable experimentation en gine used too small case good starting point prop se lection might manufacturers recommenda tion size engine type model Remember well-matched engine prop model combination will go long way toward suring better model performance limiting en gine damage Please send ideas comments contest activity re ports especially photos CL Scale activity address listed very top column CL Aerobatics/Fancher Continued page 77 Precision Aerobatics listening walked shop re veled emotions evoked personal crea tions relationship Stunt masters genius Sure genius inspired seek excellence craft assu redly art form What Citation other Fancher playing Werwages Ares just smidgen personal touch Horowitz interpret ing Mozart will impact moment charged no small degree presence nearly com plete Ares am preparing upeom ing Nostalgia Era events design last built teenager would stir excitement appreciation its beauty nearly 30 years later lends credence belief just balsa glue emotionally charged moment ac cepting Walker Cup 1979 Bob Gieseke stated Stunt lot just toy air planes Although statement intensely personal message Bob spoke volumes about nature Stunt event people fly Stunt artistic expression Darn right other hand maybe third glass good California Cabernet Naaah stopped flying field day after Christ mas eat hearts out East Coasters ran across young Paul Pomposo trying trim Out new Imitation may recall last month discussed resolved problem Pauls hard-starting powerless ST 46which dis covered improperly reassembled Well week Paul ship air hoping try some patterns agreed stick around work him Right off bat could tell serious problem level flight outboard wing substantially up inverted down Obviously some thing out whack Remember review Coxs Super Chip munk few months back talked about del eterious means bad Whitely effects condition Because lift_of wing right angles wings span ship banked circle some lift trying fly ship toward pilot case Chip munk lack tip weight caused problem Thus outboard wing elevated model flying either upright inverted Pauls case wing banked inward plane upright thereby reducing line tension banked outward plane flying inverted thus increasing line tension often symptom warped wing Pauls case wasnt wing warped flaps outboard flap Stock fog InemEat Shipment ZENOAH 04237 Cu In$24995 NOW Qoodra 40 CDI 3berlng wItI eprlng otartrl 816896 ROg Osedre 4001225 wIth Brioghello flywheel 96 Reg Onedre 40 Power Aeeonbly Only poInt *4806 QUADRA orZENOAH REPAIR $1000 plo pert Jin Moe. ERCOUPEPLANS $2306 FULL-KIT $23990 Jin Manner TOMAHAWKPLANS $2395 FLiLLKIT $2295 Jint Monoer J3 KITTENPLANS $295 FIJILKIT $2195 SIG KADET SENIOR KIT $55 nova $2206 SIG KADET SENIORITA KIT $3906 nec $1606 ZENOAH G-22 ZENOAH G39 5 FLOATS 401/4 no1 coren $2195 conpleoe kit $4706 10 teWI WHEELS $3906 P/K Spring Starter $245 PLANS SUPER STEARMAN 1/4 Godfrey $3990 1/3 TAYLORCRAFT 01/2 CUB Nelit $395 MGA Pointed Pilot Bsntn 1/4 so. WW1 WW2 Civ $195 Servos H402 42 $1295 Wodd 518 Irge nodelo $445 Peetno 9 nine ER TOP FUT DYNAThRUST 39160FF us Qoedre FUEL TANKS10 no $7522 FIBERGLASS ARROW SHAFTS 5/16 22 long 6 $115 24 00cr SevicO $290 POStage Book Cheok or.. JIM MESSERS QUALITY MODEL PRODUCTS Valley Wow Di Box 43 Allagany NY 14706 bowed down inboard bowed up gether acted like ailerons control sur faces control movement about roll axis untethered airplanes precisely what doing Pauls Imitation restraining action control lines Pauls ship would have performing continu ous unsolicited barrel rolls three ways flaps can cause problem First case Pauls ship can simply warped usually re sult covering being shrunk unequally Second flap horn itself may bent left right arms arent parallel holes flaps may have drilled parallel another flaps arent neutral same time Third flaps themselves may have im properly tapered have built-in twist root tip problems easily noted rear aircraft See com puter-generated sketches first third cases may never have problem IF both flaps twisted warped same direction case flaps wont effective helping model turn di rection other least wont get undesirable bank can live al though down deep youll know aint PROPS Worlds Largest Range Fiberglass Carbon Fiber Props Sizes 1 /2A Quarter Scale 023 and4 Blades Increased Availability 1989 Send SASE Information TOM DIXON 1938 Peachtree Suite 401 Atlanta GA 30309 April 1989 181 Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want take guesswork out finishing gemgBe Ph 419-797-2208P0 Box 2480 usky Ohio 44870 Electric F ight Has Seake2 ootls LIghtweIght 12 toooey back Adjustable sw$tcbiog pointarantee Solderless tertolnal rosy hookop ON/OFF Controller 2495 Power save relght ye, bigh efficIency 0$6V too 2$ Sine 22x53x63 Add 510$ shippiog Coliforolo residents odd 65% ii63 Tos Send Cbeek seoney order Come othJjHigh Sky FotoIa eooootor3929 KanSaS St #9 otbrvooe7 000San DlegoCA 92104 experience GREAT PERFORMANCE WING AREA 900 sq ins SPAN 72 ins WING AREA 900 sq ins series Sport Scale Balsa ARF Air planes 1404 cycle equivalent motors Happy Holidays Available direct select hobby shops g ZIMPRO MARKETING good could Hint wings level both upright inverted flight overcome urge inspect flaps closely Youll sieep bet ter night generally easy correct warps depending type finish flap covered heat-shrink plastic simply reshrink covering holding flap twisted opposite di rection original warp amount roughly equal original warp released should return half amount twist hope will make straight doped finish depending severity warp flap can straightened either heat ing steam over kettle blocking place overnight extreme cases ap plying heavy coat clear dope some re tarder will soften paint clear down wood paint dry enough han dle marring finish block flap up allow dry couple days best solution warped flap . never warp first place avoid warps careful shrink covering evenly cover ing film painting especially dopes shrink tremendously always put equal amounts paint both top bot tom flaps put less paint bot tom save weight youll probably end up warp gets progressively worse extra paint top shrinks bottom youve painted epoxies urethane paint some kind youve got real problem since paints soften additional coats impervious moisture have some success injecting water wood hypodermic needle hinge line holes wont show blocking place Dont hold breath waiting ever worse comes worst may have re move warped flaps replace Ouch cure second problem simple Sim ply grasp flaps vicinity horn arms twist until both flaps neutral same time way oniy simple dont break flaps doing Some horns very tough tweak twealting scientific word lam trimming new ship al ways take four pieces %-in plywood can use grip flaps twealting spreads pressure over larger area prevents horn arm breaking through flap An smarter method inset piece hardwood flap accept horn allows tweak hardwood rather balsaThe third problem improperly tapered flaps result improper building procedure must addressed during construction fending units must removed replaced Generally speaking Stunt flaps tapered root tip example root may three inches chord tip inch Most builders shape flaps decrease thickness hinge line trailing edge both aesthetic reasons because good aero dynamic design principles require proper way to remove equal amounts wood both top AND bottom flap Unfortunately also difficult way things through ignorance builder shapes flap side will building twist will difficult impossible correct after fact method use insure equal thickness top bottom taper thus untwisted flap Check out drawings de tails Lets assume want thickness taper 14 hinge line 1/16 trailing edge Obtain three pieces 36-in-long music wire diameters 14 %2 /16 Cut flap top view shape 4-in firm balsa Now jig flap between A-in %2-in wires blocking wires place scrap balsa Hot Stuffed directly building board Using razor plane coarse sandpaper shape flap until sanding block touches both wires entire length flap will insure thickness taper uniform Remove flap rejig WITH THE UN SHAPED SIDE UP time jig flap tween lA.in 6-in wires Repeat shaping until flap flat-tapered between both wires procedure will have removed equal amounts wood top bottom flap will straight centerlines hinge line trailing edge parallel ailing edge exactly /16 thick root tip Cover finish care fully should never have deal un wanted banks such plagued Paul less JET ENGINES DOYLEJETS Catalog $500 letter $12O0lyear DOYL EJET 4015 San Jacinto #404G Houston TX 77004713 440-4744 NEWSPACESAVING FUEL CONTAINER Fitsinyourbox2-1I2x73I5x91I5 Tough Rigid Polyethylene udes tubing erners lock tubing tlvough cap acti postage North Products PO Box 18419 Cleveland Heights OH 44118 1SesI SSAE caaog shee cimpete ie .-.Li.I IJU 182 Model Aviation SOUTHWEST RC FLYING Year round flight school Six day course $350 Learn fly planes Send SASE complete info 2818 Carolina NE Albuquerque NM 87110 505 881-3799 MILLS METMLS BOOKS oPRECISION INSTRUMENTS 1000 oF otor COMPLETE CETELOG 200 C4MPIIU res CA 2100 8 Selma baa 5prgfae1d iran 45505 0808513 3228562 PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-482-6188 IMPORTED DIESELS AUAuroreDCEDMVV5MUsEnya PAWTaplln Standard S A/C 05640 Acre ne VlntageSport & Contest Send 6100 laformatlom CARLSON ENGINE IMPORTS 314 Eaet Marconi PhoenIx AZ 85022 course youve built warp wing itself ry another time Did say stuff simple Naw its art form Remember final item limited number Fancher style 3 -in-dia circular bellcranks once again available now being produced master machinist John Schwickrath 1660 Laurel St San Carlos CA 94070 price beautifully machined aluminum brass steel unit $15 plus $150 shipping handling Needless say am big fan circular format fliers have tried convinced well Try think youll like CL Racing/Ballard Continued page 78 Paul Tune would back up % le allow model slow down before grabbed course use well-padded glove also helps reduce impact model caught during routine stop have enclosed photograph showing three Race pilots attempting share same 2 -ft-radius center circle pilots Karen Foster Bill Bischoff shirt out Melvin Schuette As can see have pressed extremely close together order have shortest possible distance cen ter circle model pilot walks very wide circle aircraft has fly much farther lap slowed perhaps 5-10 mph righter circle pilot walks closer holds hand chest shorter will effective length control lines effect size cir cle used pilot shortening line length has definite positive influence speed model New Nelson 15 engine understand new Nelson 15 works purported have 15mm shaft aimed Scale Rac ing Henry Nelson importing some very expen sive ball bearings Switzerland busy producing cranks cases forit hoped improved performance Racing Nelson compe tition engines will testing new modifi cation late February 1989 hope able receive immediately test re port results next column As always solicit comments ideas photographs CL Speed/Hempel Continued page 79 centerEd total duration 2160 prop used Zanins model made carbon fiber material has radius three inches pitch varies six inches hub 58 tip fuel tank Zanins model mounted direcriy metal pan via two screws mounted rubber British team members using new Irvine 15 prototype engines appears few engines have built Peter Halman UK turned best rime team flight 29147km/hr Peter showing off new engine fuel shutoff looks similar ones used Russians exhaust timing Irvine 15 1900 intakes 1300 crankshaft intake du ration approximately 2250 Coninued page 184 U mu. UE mu mu mm mm mm m m U U 516 GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL INT QUAT A4QN 0% Nitroti*$1075 5% Nitrohane6 $525$12Th 1Q% Nitro 15% Nitro than3Q $6$1675 35% Nitromefihahe $ 95 25$2695 SIG PREMIUM 4-STROKE FUEL 10% Nitromethane$1425 15% Nitromethane$1625 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrcos soujeet ehonge oth0ot notice See aealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 THE JOURNAL THE AIRPLANE 1920 1940TuE EARLY AEROPLANE Leo Opdycke EditorKenn Rust Editor wwi AERO 19001919 SKYWAYS 19201940 two Journals contain information current projects orical research news museums airshows shop notes technical drawings data information paint color photographs aeroplanes engines parts sale scale modelling material PLUS wants disposals news current publications kinds PLUS more. Sample copies $4 Published WORLD WAR 1 2eplzn& INC 15 Crescent Road Pottghkecpste NY 12601 USA 914 473-3679 April 1989 183
Edition: Model Aviation - 1989/04
Page Numbers: 77, 181, 182, 183
The Dance ft touch come alt run seek control can lift belong raise hand show ready what destined accuracy machine grace weightless snow perform beauty can know Together climb stars attack ending ground turn away laugh joy shouting crowd dance circles leap away another part time spin loop blow em away Because love fly now its time end dance lasts just moments dies Thus bring dawn touch ground graceful fly Author unknown NICE huh Thanks Tom Lay sending way says found amongst old love beads flower child era whichby clas sic carbon-dating methodsshould work out early Sixties suspect author might just still around claim credit Let know just agree Control Line Stunt column place modeling might find poetry acceptable form diver tissement suspect artistic element Polands Stunt ace Piotr Zawada uses clever removable tail wheel plywood fe male receptacle model receives spring-clip end music wire strut height tail can easily adjusted suit various flying surfaces using struts different lengths common almost Stunt fliers predisposes appreciate inherent beauties other forms expression first read Dance listening broadcast Vladimir Horowitz playing Mo zart appreciative audience native Rus sia first such performance since left country some 60 years before personal way emotional response audience wel coming him back triggered similar feelings tween myself thoughts lifelong affair Continued page 181 Fancher warms up graphics program new computer again show different types warps flaps L build flap shown R will eliminate possible types warps Ted has very good discussion flap warps monththeir symptoms cures April 1989 77 Conoi Line Aerobatics Ted Fancher 158 Flying Cloud isle Foster City CA 94404 Germanys Claus Maikis latest masterpiece proves Bob Whitely isnt Stunter suffers twin-engine sadomasochism Fancher thinks power twin 35s Stunt legend Bob Palmer recently donated famous Thunderbird AMA Muse um Although current compietitor CLPA still loves event THREE FLAP PROBLEMS UItJED FROhI T OF II ThO MXBLXI3NED FLJP I-tORN ERNB THE RIGHT WAY TO SHAPE FLAP [ CUT FIJi 5IVE FROhI FIRS 1/4 SWfl StE CILUIN FOR DETAILS FLAP 94W5D DI THIS IWER IU HAIlS EJAL TIWER TOP tWIT ROtTINI Nil UDi ITT DfAICS UI4lANT RIlIZIUT TDITEFUIES JIG IN FLAtE SETUSEN TIJSIC lITRE AS SIWI CI HUSIC Unit 111TH BALM BLOOCS IXJED TO BUILDING SUWACE 14 lITRE-IfLUAIlS tilT maTS FOR HINIS ORE SIWTFNT FLAPS OR ELEIJATIUS CERN [JUWE TOP HALF AS SINL/U MDXC lITRE dIG/4 1111 ALF TWS FLAPSIDE UIjSLLY TNC FLW amount experimentation props might required find right combination other extreme model such SE 5A frontal area engine cowling very large allowing small portion prop either end effective case con siderable experimentation might required find right prop type diameter pitch com bination engine used might find after considerable experimentation en gine used too small case good starting point prop se lection might manufacturers recommenda tion size engine type model Remember well-matched engine prop model combination will go long way toward suring better model performance limiting en gine damage Please send ideas comments contest activity re ports especially photos CL Scale activity address listed very top column CL Aerobatics/Fancher Continued page 77 Precision Aerobatics listening walked shop re veled emotions evoked personal crea tions relationship Stunt masters genius Sure genius inspired seek excellence craft assu redly art form What Citation other Fancher playing Werwages Ares just smidgen personal touch Horowitz interpret ing Mozart will impact moment charged no small degree presence nearly com plete Ares am preparing upeom ing Nostalgia Era events design last built teenager would stir excitement appreciation its beauty nearly 30 years later lends credence belief just balsa glue emotionally charged moment ac cepting Walker Cup 1979 Bob Gieseke stated Stunt lot just toy air planes Although statement intensely personal message Bob spoke volumes about nature Stunt event people fly Stunt artistic expression Darn right other hand maybe third glass good California Cabernet Naaah stopped flying field day after Christ mas eat hearts out East Coasters ran across young Paul Pomposo trying trim Out new Imitation may recall last month discussed resolved problem Pauls hard-starting powerless ST 46which dis covered improperly reassembled Well week Paul ship air hoping try some patterns agreed stick around work him Right off bat could tell serious problem level flight outboard wing substantially up inverted down Obviously some thing out whack Remember review Coxs Super Chip munk few months back talked about del eterious means bad Whitely effects condition Because lift_of wing right angles wings span ship banked circle some lift trying fly ship toward pilot case Chip munk lack tip weight caused problem Thus outboard wing elevated model flying either upright inverted Pauls case wing banked inward plane upright thereby reducing line tension banked outward plane flying inverted thus increasing line tension often symptom warped wing Pauls case wasnt wing warped flaps outboard flap Stock fog InemEat Shipment ZENOAH 04237 Cu In$24995 NOW Qoodra 40 CDI 3berlng wItI eprlng otartrl 816896 ROg Osedre 4001225 wIth Brioghello flywheel 96 Reg Onedre 40 Power Aeeonbly Only poInt *4806 QUADRA orZENOAH REPAIR $1000 plo pert Jin Moe. ERCOUPEPLANS $2306 FULL-KIT $23990 Jin Manner TOMAHAWKPLANS $2395 FLiLLKIT $2295 Jint Monoer J3 KITTENPLANS $295 FIJILKIT $2195 SIG KADET SENIOR KIT $55 nova $2206 SIG KADET SENIORITA KIT $3906 nec $1606 ZENOAH G-22 ZENOAH G39 5 FLOATS 401/4 no1 coren $2195 conpleoe kit $4706 10 teWI WHEELS $3906 P/K Spring Starter $245 PLANS SUPER STEARMAN 1/4 Godfrey $3990 1/3 TAYLORCRAFT 01/2 CUB Nelit $395 MGA Pointed Pilot Bsntn 1/4 so. WW1 WW2 Civ $195 Servos H402 42 $1295 Wodd 518 Irge nodelo $445 Peetno 9 nine ER TOP FUT DYNAThRUST 39160FF us Qoedre FUEL TANKS10 no $7522 FIBERGLASS ARROW SHAFTS 5/16 22 long 6 $115 24 00cr SevicO $290 POStage Book Cheok or.. JIM MESSERS QUALITY MODEL PRODUCTS Valley Wow Di Box 43 Allagany NY 14706 bowed down inboard bowed up gether acted like ailerons control sur faces control movement about roll axis untethered airplanes precisely what doing Pauls Imitation restraining action control lines Pauls ship would have performing continu ous unsolicited barrel rolls three ways flaps can cause problem First case Pauls ship can simply warped usually re sult covering being shrunk unequally Second flap horn itself may bent left right arms arent parallel holes flaps may have drilled parallel another flaps arent neutral same time Third flaps themselves may have im properly tapered have built-in twist root tip problems easily noted rear aircraft See com puter-generated sketches first third cases may never have problem IF both flaps twisted warped same direction case flaps wont effective helping model turn di rection other least wont get undesirable bank can live al though down deep youll know aint PROPS Worlds Largest Range Fiberglass Carbon Fiber Props Sizes 1 /2A Quarter Scale 023 and4 Blades Increased Availability 1989 Send SASE Information TOM DIXON 1938 Peachtree Suite 401 Atlanta GA 30309 April 1989 181 Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want take guesswork out finishing gemgBe Ph 419-797-2208P0 Box 2480 usky Ohio 44870 Electric F ight Has Seake2 ootls LIghtweIght 12 toooey back Adjustable sw$tcbiog pointarantee Solderless tertolnal rosy hookop ON/OFF Controller 2495 Power save relght ye, bigh efficIency 0$6V too 2$ Sine 22x53x63 Add 510$ shippiog Coliforolo residents odd 65% ii63 Tos Send Cbeek seoney order Come othJjHigh Sky FotoIa eooootor3929 KanSaS St #9 otbrvooe7 000San DlegoCA 92104 experience GREAT PERFORMANCE WING AREA 900 sq ins SPAN 72 ins WING AREA 900 sq ins series Sport Scale Balsa ARF Air planes 1404 cycle equivalent motors Happy Holidays Available direct select hobby shops g ZIMPRO MARKETING good could Hint wings level both upright inverted flight overcome urge inspect flaps closely Youll sieep bet ter night generally easy correct warps depending type finish flap covered heat-shrink plastic simply reshrink covering holding flap twisted opposite di rection original warp amount roughly equal original warp released should return half amount twist hope will make straight doped finish depending severity warp flap can straightened either heat ing steam over kettle blocking place overnight extreme cases ap plying heavy coat clear dope some re tarder will soften paint clear down wood paint dry enough han dle marring finish block flap up allow dry couple days best solution warped flap . never warp first place avoid warps careful shrink covering evenly cover ing film painting especially dopes shrink tremendously always put equal amounts paint both top bot tom flaps put less paint bot tom save weight youll probably end up warp gets progressively worse extra paint top shrinks bottom youve painted epoxies urethane paint some kind youve got real problem since paints soften additional coats impervious moisture have some success injecting water wood hypodermic needle hinge line holes wont show blocking place Dont hold breath waiting ever worse comes worst may have re move warped flaps replace Ouch cure second problem simple Sim ply grasp flaps vicinity horn arms twist until both flaps neutral same time way oniy simple dont break flaps doing Some horns very tough tweak twealting scientific word lam trimming new ship al ways take four pieces %-in plywood can use grip flaps twealting spreads pressure over larger area prevents horn arm breaking through flap An smarter method inset piece hardwood flap accept horn allows tweak hardwood rather balsaThe third problem improperly tapered flaps result improper building procedure must addressed during construction fending units must removed replaced Generally speaking Stunt flaps tapered root tip example root may three inches chord tip inch Most builders shape flaps decrease thickness hinge line trailing edge both aesthetic reasons because good aero dynamic design principles require proper way to remove equal amounts wood both top AND bottom flap Unfortunately also difficult way things through ignorance builder shapes flap side will building twist will difficult impossible correct after fact method use insure equal thickness top bottom taper thus untwisted flap Check out drawings de tails Lets assume want thickness taper 14 hinge line 1/16 trailing edge Obtain three pieces 36-in-long music wire diameters 14 %2 /16 Cut flap top view shape 4-in firm balsa Now jig flap between A-in %2-in wires blocking wires place scrap balsa Hot Stuffed directly building board Using razor plane coarse sandpaper shape flap until sanding block touches both wires entire length flap will insure thickness taper uniform Remove flap rejig WITH THE UN SHAPED SIDE UP time jig flap tween lA.in 6-in wires Repeat shaping until flap flat-tapered between both wires procedure will have removed equal amounts wood top bottom flap will straight centerlines hinge line trailing edge parallel ailing edge exactly /16 thick root tip Cover finish care fully should never have deal un wanted banks such plagued Paul less JET ENGINES DOYLEJETS Catalog $500 letter $12O0lyear DOYL EJET 4015 San Jacinto #404G Houston TX 77004713 440-4744 NEWSPACESAVING FUEL CONTAINER Fitsinyourbox2-1I2x73I5x91I5 Tough Rigid Polyethylene udes tubing erners lock tubing tlvough cap acti postage North Products PO Box 18419 Cleveland Heights OH 44118 1SesI SSAE caaog shee cimpete ie .-.Li.I IJU 182 Model Aviation SOUTHWEST RC FLYING Year round flight school Six day course $350 Learn fly planes Send SASE complete info 2818 Carolina NE Albuquerque NM 87110 505 881-3799 MILLS METMLS BOOKS oPRECISION INSTRUMENTS 1000 oF otor COMPLETE CETELOG 200 C4MPIIU res CA 2100 8 Selma baa 5prgfae1d iran 45505 0808513 3228562 PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-482-6188 IMPORTED DIESELS AUAuroreDCEDMVV5MUsEnya PAWTaplln Standard S A/C 05640 Acre ne VlntageSport & Contest Send 6100 laformatlom CARLSON ENGINE IMPORTS 314 Eaet Marconi PhoenIx AZ 85022 course youve built warp wing itself ry another time Did say stuff simple Naw its art form Remember final item limited number Fancher style 3 -in-dia circular bellcranks once again available now being produced master machinist John Schwickrath 1660 Laurel St San Carlos CA 94070 price beautifully machined aluminum brass steel unit $15 plus $150 shipping handling Needless say am big fan circular format fliers have tried convinced well Try think youll like CL Racing/Ballard Continued page 78 Paul Tune would back up % le allow model slow down before grabbed course use well-padded glove also helps reduce impact model caught during routine stop have enclosed photograph showing three Race pilots attempting share same 2 -ft-radius center circle pilots Karen Foster Bill Bischoff shirt out Melvin Schuette As can see have pressed extremely close together order have shortest possible distance cen ter circle model pilot walks very wide circle aircraft has fly much farther lap slowed perhaps 5-10 mph righter circle pilot walks closer holds hand chest shorter will effective length control lines effect size cir cle used pilot shortening line length has definite positive influence speed model New Nelson 15 engine understand new Nelson 15 works purported have 15mm shaft aimed Scale Rac ing Henry Nelson importing some very expen sive ball bearings Switzerland busy producing cranks cases forit hoped improved performance Racing Nelson compe tition engines will testing new modifi cation late February 1989 hope able receive immediately test re port results next column As always solicit comments ideas photographs CL Speed/Hempel Continued page 79 centerEd total duration 2160 prop used Zanins model made carbon fiber material has radius three inches pitch varies six inches hub 58 tip fuel tank Zanins model mounted direcriy metal pan via two screws mounted rubber British team members using new Irvine 15 prototype engines appears few engines have built Peter Halman UK turned best rime team flight 29147km/hr Peter showing off new engine fuel shutoff looks similar ones used Russians exhaust timing Irvine 15 1900 intakes 1300 crankshaft intake du ration approximately 2250 Coninued page 184 U mu. UE mu mu mm mm mm m m U U 516 GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL INT QUAT A4QN 0% Nitroti*$1075 5% Nitrohane6 $525$12Th 1Q% Nitro 15% Nitro than3Q $6$1675 35% Nitromefihahe $ 95 25$2695 SIG PREMIUM 4-STROKE FUEL 10% Nitromethane$1425 15% Nitromethane$1625 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrcos soujeet ehonge oth0ot notice See aealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 THE JOURNAL THE AIRPLANE 1920 1940TuE EARLY AEROPLANE Leo Opdycke EditorKenn Rust Editor wwi AERO 19001919 SKYWAYS 19201940 two Journals contain information current projects orical research news museums airshows shop notes technical drawings data information paint color photographs aeroplanes engines parts sale scale modelling material PLUS wants disposals news current publications kinds PLUS more. Sample copies $4 Published WORLD WAR 1 2eplzn& INC 15 Crescent Road Pottghkecpste NY 12601 USA 914 473-3679 April 1989 183
Edition: Model Aviation - 1989/04
Page Numbers: 77, 181, 182, 183
The Dance ft touch come alt run seek control can lift belong raise hand show ready what destined accuracy machine grace weightless snow perform beauty can know Together climb stars attack ending ground turn away laugh joy shouting crowd dance circles leap away another part time spin loop blow em away Because love fly now its time end dance lasts just moments dies Thus bring dawn touch ground graceful fly Author unknown NICE huh Thanks Tom Lay sending way says found amongst old love beads flower child era whichby clas sic carbon-dating methodsshould work out early Sixties suspect author might just still around claim credit Let know just agree Control Line Stunt column place modeling might find poetry acceptable form diver tissement suspect artistic element Polands Stunt ace Piotr Zawada uses clever removable tail wheel plywood fe male receptacle model receives spring-clip end music wire strut height tail can easily adjusted suit various flying surfaces using struts different lengths common almost Stunt fliers predisposes appreciate inherent beauties other forms expression first read Dance listening broadcast Vladimir Horowitz playing Mo zart appreciative audience native Rus sia first such performance since left country some 60 years before personal way emotional response audience wel coming him back triggered similar feelings tween myself thoughts lifelong affair Continued page 181 Fancher warms up graphics program new computer again show different types warps flaps L build flap shown R will eliminate possible types warps Ted has very good discussion flap warps monththeir symptoms cures April 1989 77 Conoi Line Aerobatics Ted Fancher 158 Flying Cloud isle Foster City CA 94404 Germanys Claus Maikis latest masterpiece proves Bob Whitely isnt Stunter suffers twin-engine sadomasochism Fancher thinks power twin 35s Stunt legend Bob Palmer recently donated famous Thunderbird AMA Muse um Although current compietitor CLPA still loves event THREE FLAP PROBLEMS UItJED FROhI T OF II ThO MXBLXI3NED FLJP I-tORN ERNB THE RIGHT WAY TO SHAPE FLAP [ CUT FIJi 5IVE FROhI FIRS 1/4 SWfl StE CILUIN FOR DETAILS FLAP 94W5D DI THIS IWER IU HAIlS EJAL TIWER TOP tWIT ROtTINI Nil UDi ITT DfAICS UI4lANT RIlIZIUT TDITEFUIES JIG IN FLAtE SETUSEN TIJSIC lITRE AS SIWI CI HUSIC Unit 111TH BALM BLOOCS IXJED TO BUILDING SUWACE 14 lITRE-IfLUAIlS tilT maTS FOR HINIS ORE SIWTFNT FLAPS OR ELEIJATIUS CERN [JUWE TOP HALF AS SINL/U MDXC lITRE dIG/4 1111 ALF TWS FLAPSIDE UIjSLLY TNC FLW amount experimentation props might required find right combination other extreme model such SE 5A frontal area engine cowling very large allowing small portion prop either end effective case con siderable experimentation might required find right prop type diameter pitch com bination engine used might find after considerable experimentation en gine used too small case good starting point prop se lection might manufacturers recommenda tion size engine type model Remember well-matched engine prop model combination will go long way toward suring better model performance limiting en gine damage Please send ideas comments contest activity re ports especially photos CL Scale activity address listed very top column CL Aerobatics/Fancher Continued page 77 Precision Aerobatics listening walked shop re veled emotions evoked personal crea tions relationship Stunt masters genius Sure genius inspired seek excellence craft assu redly art form What Citation other Fancher playing Werwages Ares just smidgen personal touch Horowitz interpret ing Mozart will impact moment charged no small degree presence nearly com plete Ares am preparing upeom ing Nostalgia Era events design last built teenager would stir excitement appreciation its beauty nearly 30 years later lends credence belief just balsa glue emotionally charged moment ac cepting Walker Cup 1979 Bob Gieseke stated Stunt lot just toy air planes Although statement intensely personal message Bob spoke volumes about nature Stunt event people fly Stunt artistic expression Darn right other hand maybe third glass good California Cabernet Naaah stopped flying field day after Christ mas eat hearts out East Coasters ran across young Paul Pomposo trying trim Out new Imitation may recall last month discussed resolved problem Pauls hard-starting powerless ST 46which dis covered improperly reassembled Well week Paul ship air hoping try some patterns agreed stick around work him Right off bat could tell serious problem level flight outboard wing substantially up inverted down Obviously some thing out whack Remember review Coxs Super Chip munk few months back talked about del eterious means bad Whitely effects condition Because lift_of wing right angles wings span ship banked circle some lift trying fly ship toward pilot case Chip munk lack tip weight caused problem Thus outboard wing elevated model flying either upright inverted Pauls case wing banked inward plane upright thereby reducing line tension banked outward plane flying inverted thus increasing line tension often symptom warped wing Pauls case wasnt wing warped flaps outboard flap Stock fog InemEat Shipment ZENOAH 04237 Cu In$24995 NOW Qoodra 40 CDI 3berlng wItI eprlng otartrl 816896 ROg Osedre 4001225 wIth Brioghello flywheel 96 Reg Onedre 40 Power Aeeonbly Only poInt *4806 QUADRA orZENOAH REPAIR $1000 plo pert Jin Moe. ERCOUPEPLANS $2306 FULL-KIT $23990 Jin Manner TOMAHAWKPLANS $2395 FLiLLKIT $2295 Jint Monoer J3 KITTENPLANS $295 FIJILKIT $2195 SIG KADET SENIOR KIT $55 nova $2206 SIG KADET SENIORITA KIT $3906 nec $1606 ZENOAH G-22 ZENOAH G39 5 FLOATS 401/4 no1 coren $2195 conpleoe kit $4706 10 teWI WHEELS $3906 P/K Spring Starter $245 PLANS SUPER STEARMAN 1/4 Godfrey $3990 1/3 TAYLORCRAFT 01/2 CUB Nelit $395 MGA Pointed Pilot Bsntn 1/4 so. WW1 WW2 Civ $195 Servos H402 42 $1295 Wodd 518 Irge nodelo $445 Peetno 9 nine ER TOP FUT DYNAThRUST 39160FF us Qoedre FUEL TANKS10 no $7522 FIBERGLASS ARROW SHAFTS 5/16 22 long 6 $115 24 00cr SevicO $290 POStage Book Cheok or.. JIM MESSERS QUALITY MODEL PRODUCTS Valley Wow Di Box 43 Allagany NY 14706 bowed down inboard bowed up gether acted like ailerons control sur faces control movement about roll axis untethered airplanes precisely what doing Pauls Imitation restraining action control lines Pauls ship would have performing continu ous unsolicited barrel rolls three ways flaps can cause problem First case Pauls ship can simply warped usually re sult covering being shrunk unequally Second flap horn itself may bent left right arms arent parallel holes flaps may have drilled parallel another flaps arent neutral same time Third flaps themselves may have im properly tapered have built-in twist root tip problems easily noted rear aircraft See com puter-generated sketches first third cases may never have problem IF both flaps twisted warped same direction case flaps wont effective helping model turn di rection other least wont get undesirable bank can live al though down deep youll know aint PROPS Worlds Largest Range Fiberglass Carbon Fiber Props Sizes 1 /2A Quarter Scale 023 and4 Blades Increased Availability 1989 Send SASE Information TOM DIXON 1938 Peachtree Suite 401 Atlanta GA 30309 April 1989 181 Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want take guesswork out finishing gemgBe Ph 419-797-2208P0 Box 2480 usky Ohio 44870 Electric F ight Has Seake2 ootls LIghtweIght 12 toooey back Adjustable sw$tcbiog pointarantee Solderless tertolnal rosy hookop ON/OFF Controller 2495 Power save relght ye, bigh efficIency 0$6V too 2$ Sine 22x53x63 Add 510$ shippiog Coliforolo residents odd 65% ii63 Tos Send Cbeek seoney order Come othJjHigh Sky FotoIa eooootor3929 KanSaS St #9 otbrvooe7 000San DlegoCA 92104 experience GREAT PERFORMANCE WING AREA 900 sq ins SPAN 72 ins WING AREA 900 sq ins series Sport Scale Balsa ARF Air planes 1404 cycle equivalent motors Happy Holidays Available direct select hobby shops g ZIMPRO MARKETING good could Hint wings level both upright inverted flight overcome urge inspect flaps closely Youll sieep bet ter night generally easy correct warps depending type finish flap covered heat-shrink plastic simply reshrink covering holding flap twisted opposite di rection original warp amount roughly equal original warp released should return half amount twist hope will make straight doped finish depending severity warp flap can straightened either heat ing steam over kettle blocking place overnight extreme cases ap plying heavy coat clear dope some re tarder will soften paint clear down wood paint dry enough han dle marring finish block flap up allow dry couple days best solution warped flap . never warp first place avoid warps careful shrink covering evenly cover ing film painting especially dopes shrink tremendously always put equal amounts paint both top bot tom flaps put less paint bot tom save weight youll probably end up warp gets progressively worse extra paint top shrinks bottom youve painted epoxies urethane paint some kind youve got real problem since paints soften additional coats impervious moisture have some success injecting water wood hypodermic needle hinge line holes wont show blocking place Dont hold breath waiting ever worse comes worst may have re move warped flaps replace Ouch cure second problem simple Sim ply grasp flaps vicinity horn arms twist until both flaps neutral same time way oniy simple dont break flaps doing Some horns very tough tweak twealting scientific word lam trimming new ship al ways take four pieces %-in plywood can use grip flaps twealting spreads pressure over larger area prevents horn arm breaking through flap An smarter method inset piece hardwood flap accept horn allows tweak hardwood rather balsaThe third problem improperly tapered flaps result improper building procedure must addressed during construction fending units must removed replaced Generally speaking Stunt flaps tapered root tip example root may three inches chord tip inch Most builders shape flaps decrease thickness hinge line trailing edge both aesthetic reasons because good aero dynamic design principles require proper way to remove equal amounts wood both top AND bottom flap Unfortunately also difficult way things through ignorance builder shapes flap side will building twist will difficult impossible correct after fact method use insure equal thickness top bottom taper thus untwisted flap Check out drawings de tails Lets assume want thickness taper 14 hinge line 1/16 trailing edge Obtain three pieces 36-in-long music wire diameters 14 %2 /16 Cut flap top view shape 4-in firm balsa Now jig flap between A-in %2-in wires blocking wires place scrap balsa Hot Stuffed directly building board Using razor plane coarse sandpaper shape flap until sanding block touches both wires entire length flap will insure thickness taper uniform Remove flap rejig WITH THE UN SHAPED SIDE UP time jig flap tween lA.in 6-in wires Repeat shaping until flap flat-tapered between both wires procedure will have removed equal amounts wood top bottom flap will straight centerlines hinge line trailing edge parallel ailing edge exactly /16 thick root tip Cover finish care fully should never have deal un wanted banks such plagued Paul less JET ENGINES DOYLEJETS Catalog $500 letter $12O0lyear DOYL EJET 4015 San Jacinto #404G Houston TX 77004713 440-4744 NEWSPACESAVING FUEL CONTAINER Fitsinyourbox2-1I2x73I5x91I5 Tough Rigid Polyethylene udes tubing erners lock tubing tlvough cap acti postage North Products PO Box 18419 Cleveland Heights OH 44118 1SesI SSAE caaog shee cimpete ie .-.Li.I IJU 182 Model Aviation SOUTHWEST RC FLYING Year round flight school Six day course $350 Learn fly planes Send SASE complete info 2818 Carolina NE Albuquerque NM 87110 505 881-3799 MILLS METMLS BOOKS oPRECISION INSTRUMENTS 1000 oF otor COMPLETE CETELOG 200 C4MPIIU res CA 2100 8 Selma baa 5prgfae1d iran 45505 0808513 3228562 PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-482-6188 IMPORTED DIESELS AUAuroreDCEDMVV5MUsEnya PAWTaplln Standard S A/C 05640 Acre ne VlntageSport & Contest Send 6100 laformatlom CARLSON ENGINE IMPORTS 314 Eaet Marconi PhoenIx AZ 85022 course youve built warp wing itself ry another time Did say stuff simple Naw its art form Remember final item limited number Fancher style 3 -in-dia circular bellcranks once again available now being produced master machinist John Schwickrath 1660 Laurel St San Carlos CA 94070 price beautifully machined aluminum brass steel unit $15 plus $150 shipping handling Needless say am big fan circular format fliers have tried convinced well Try think youll like CL Racing/Ballard Continued page 78 Paul Tune would back up % le allow model slow down before grabbed course use well-padded glove also helps reduce impact model caught during routine stop have enclosed photograph showing three Race pilots attempting share same 2 -ft-radius center circle pilots Karen Foster Bill Bischoff shirt out Melvin Schuette As can see have pressed extremely close together order have shortest possible distance cen ter circle model pilot walks very wide circle aircraft has fly much farther lap slowed perhaps 5-10 mph righter circle pilot walks closer holds hand chest shorter will effective length control lines effect size cir cle used pilot shortening line length has definite positive influence speed model New Nelson 15 engine understand new Nelson 15 works purported have 15mm shaft aimed Scale Rac ing Henry Nelson importing some very expen sive ball bearings Switzerland busy producing cranks cases forit hoped improved performance Racing Nelson compe tition engines will testing new modifi cation late February 1989 hope able receive immediately test re port results next column As always solicit comments ideas photographs CL Speed/Hempel Continued page 79 centerEd total duration 2160 prop used Zanins model made carbon fiber material has radius three inches pitch varies six inches hub 58 tip fuel tank Zanins model mounted direcriy metal pan via two screws mounted rubber British team members using new Irvine 15 prototype engines appears few engines have built Peter Halman UK turned best rime team flight 29147km/hr Peter showing off new engine fuel shutoff looks similar ones used Russians exhaust timing Irvine 15 1900 intakes 1300 crankshaft intake du ration approximately 2250 Coninued page 184 U mu. UE mu mu mm mm mm m m U U 516 GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL INT QUAT A4QN 0% Nitroti*$1075 5% Nitrohane6 $525$12Th 1Q% Nitro 15% Nitro than3Q $6$1675 35% Nitromefihahe $ 95 25$2695 SIG PREMIUM 4-STROKE FUEL 10% Nitromethane$1425 15% Nitromethane$1625 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrcos soujeet ehonge oth0ot notice See aealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 THE JOURNAL THE AIRPLANE 1920 1940TuE EARLY AEROPLANE Leo Opdycke EditorKenn Rust Editor wwi AERO 19001919 SKYWAYS 19201940 two Journals contain information current projects orical research news museums airshows shop notes technical drawings data information paint color photographs aeroplanes engines parts sale scale modelling material PLUS wants disposals news current publications kinds PLUS more. Sample copies $4 Published WORLD WAR 1 2eplzn& INC 15 Crescent Road Pottghkecpste NY 12601 USA 914 473-3679 April 1989 183