YOU COULD HEAR IT COMING 10 miles out Texas Wildcat its slip stream howling through brass tubes fuselage-mounted box radiators gave ter rifying screech roared wideopen pylon turn nearly 200 mph Its easy see racer nicknamed Whis tling Bill Texas Wildcat its sister ship Cactus Kitten sponsored flamboy ant Texas oilman aviation enthusiast CEJ Cox strong-willed wife Nel lie unsuccessful attempt bring prestigious international Gordon Bennett Trophy race Houston April 13 1920 Nellie already famous being first woman America have own personal plane pilot ordered Cur tiss Aeroplane Company build Gor don Bennett racer Two months later Mr Cox ordered second racer era airplanes looked like flying bird cages Wildcat Kitten notable being 90-day wonders three months go before finished racers shipped France design emphasis max imizing speed time design details project kept secret engine new Curtiss 430-hp C12 fuselage planked stressedskin veneer doped fabric covered wings Wildcat built two sets wingsa 32-ft high-lift wing test flying thin 25-ft doublecambered airfoil racing Finally rigid landing gear useda decision fateThis nifty CL sport/stunt profile model innova tive ill-starred early-20s racer its best 30 40 engine turning 10 x 6 prop Its easy fly has no bad habits U Bill Darkow ful consequences Coxs dream Both racers could converted bi planes model presented uses racing wing thick symmetrical airfoil Test pilot Roland Rohlfs first flew Wild cat shortly after christened Nellie racer exhibited aileron flutter severe enough nearly end Rohlfs career quickly corrected completed test flights Wildcat though ran out time putting Kitten through its paces Nellie persuaded husband assign pilot own choice fly Gordon Bennett race instead Rohlfs Furious snub Rohlfs talked Cox signing agreement reassigned other pilot Kitten clinched matters tak ing one-inch brush some black paint quickly slapped Texas Wildcat block letters both sides plane Unfortunately piloting dispute foretaste Pandoras box problems hounded Wildcat point forward Organizational prob lems flaws hastily executed de sign became distressingly obvious soon planes arrived France First credibly monoplane wings Left The wing strut components shown 2 brass plug-in tubes already installed Right Details control system bellcrank mount made hard aluminum bolted fuselage nylon bellcrank pushrod lead-out wires already tached can also see wing struts plugged protruding axle ends dummy exhaust stack simulated radiator left America meant Wild cat assembled its untested bi plane form Rohlfs opened throttle its first flight plane wouldnt movethe extremely high pitched racing prop simply didnt have enough bite meant Wildcat pushed start its takeoff run plane covered whole airstrip part farmers field before airborne Once aloft airplane pitched violently Rohlfs barely able get back field land safely pronounced entire flight nightmare desperation designers stayed up night laying out new ribs spars workspace help gallantly provided French Moraine-Saulnier fac tory new set biplane wings com pleted fitted just four days However Wildcat Etampes 7 am next day qualify time biplane wings com pleted finished already late afternoon Time running out Still smelling fresh dope racer rolled out putting enough fuel 30-mile flight Rohlfs took off dusk Just lifted otf wheels struck hidden rut plane bounced air Rejoicing what described planes greatly improved flight characteristics' Rohlfs unaware shock broken wheel spokes rigid landing gear As turned final approach field Etampes engine quit Rohlfs prepared dead-stick landing wheels touched broken spokes collapsed rigid gear dug airplane tlipped fuselage broke half Coxs attempt bring Gordon Ben nett Trophy race Houston quite liter ally lost its wheels Fortunately pi lot no fire Rohlfs worst injury dislocated shoulder Cactus Kitten meantime never uncrated Shipped back America converted triplane raced 86 Model Aviation Left Component parts basic airframe laid out fuselage halves joined engine mounts glued place Right wing its sheeted leading edge forming strong D-spar profile fuselage tail section finished ready assembly Len ihe landing gear installed finished fuselage gear formed two 21-in lengths 3A2 wire axle formed same-diameter wire cut 12 Right photo shows split thin-walled aluminum strut fairing covering axle assembly Three inch Williams Brothers wheels installed %2-0D brass tube bearings Note protruding axle designed receive wing strut some success Construction Wildcat has three distinctive features improve flight safety contribute ease finishing exterior-mounted con trol system landing gear tied di rectly x 2/8 x 12-in engine mounts Together unique plug-in wing struts added after model fin ished Wing Make rib pattern thin metal plywood Cut ribs three sheets x x 36-in balsa stock using re mainder finish rudder Join wing spars four /16 x x 6in ply doublers Cut half-depth notches 2-in centers main spar wing ribs Cut 24-in leading trailing edge planking strips two sheets 546 x 3 x 36-in balsa Use remainder cap strips center section planking Mark 2-in spaces rear spar inside trailing edge planking Assem ble ribs spars gluing Note double ribs center section triple-laminated ribs strut tachment points Pin entire lower half trailing Continued page 188 oiIi N ----m2 5OOOuO K ix 25 I- C~ 54 Uto C 0 = ~Ja maamaa_ SF-I-LUIMlWa K at-a maCm 0 54% U i C C U 0 0 maCC nI 2I-e0200FOctober 1989 87 Close-up shot showing V-strut plugged wing Study text plan care fully fitting mounts critical Close-up photo showing details wing strut plugged axle assem bly creates strong rigid landing gear/wing support assembly thatll withstand hard use ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE model built rules should able flown pitted intermediate-level partici pants rules appear work successfully drizzle circuit could used Rac ing enthusiasts other areas country Basically rules follow AMA Slow Rat Event 312 rules Deviations AMA rules areas engine requirements fuel tank design pull-test control line specifica tion quote Northwest rules respect engine all operate suction feed engine shall plain-bearing type single bypass intake port No variable in-flight adjusting carburetors allowed used AMA Slow Rat Race however other modification intake permissible also no restriction regarding engine rework ex cept major components shall produced original manufacturer no nonfactory material may added engine respect fuel tank cated outboard side fuselage tank may designed cowl en gine Pull test 35 lb Lines stranded construction Propellers Scale Racing have asked several Racers typical starting point Scale Race prop generally use KellyWizard III McCollum/Garner-type Scale Racing propeller After removing flashing Kelly prop will generally require thinning pitch distribution both props should follows measured Prather prop gauge Station I3 3 pitch Station II3 4 pitch Station 1114 4 pitch Station V4/2 pich Station VI43A pitch Station VII5 pitch Station VIII54 pitch After props pitched thin upper sur face blade tips around 025030 thick carefully balance prop using dynamic balancer general length prop will 6 however have found some engines require 63/5-in prop some blade short 6A will have try several propeller mod ifications both test stand flight plane/engine combination achieve maxi mum speeds As always solicit comments photos Texas Wildcat/Darkow Continued page 87 edge flat surface being careful keep straight Glue rear wing ribs lower half trailing edge leaving / clearance back Glue up per half trailing edge rear lower half wing ribs Remove wing building board Mark wing rib locations 2-in intervals A-in leading edge glue ribs place Rubberbands may used hold everything together After checking alignment carefully glue ribs spars Add leading edge planking complete D-tube spar wing will become quite rigid Plank cen ter section install cap strips glue shape tips Set wing aside time being drilling holes strut fittings 1uselage Cut upper lower halves shape two pieces /2 x 3 x 36-in medium-soft balsa Join center line Make cutouts wing tween engine mounts Epoxy engine mounts place Cut /16 ply nose doublers shape glue fuselage Drill landing gear mount holes through lower engine mount indicated plan Glue %2OD brass tubes holes flush fuselage sides Drill %-in holes en gine bellcrank mounts dummy ex hausts drill 12A-in holes %-in centers shown plan glue 1-in lengths A-in doweling holes Tail assembly Cut rudder stabilizer elevator shape Join elevator halves strip /6 x A-in spruce Join elevator stabilizer nylon hinges Cut out stabilizer slot glue tail assembly fuselage being care ful maintain correct alignment Mount /32 wire tail skid spruce block glue unit notch rear fu 188 Model Aviation TWO NEW FLIGHT BOXES Completely assembled finished Made uSA Both top qsatity wood COnOtruction Two large drawers unique drawer locka small boo 0 plun shipping large boo $12500 plus shipping includes met compartmentbattery/power panel compartmentadlustable fuselage Cradles Mosey back guarastee Send SI tsr apace call 14151 747-O$47 leave meseage Flights Fancy Aesmudellng P0 Boo La Honda Ca B4020 CL Racing/Ballard Continued page 184 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE CULPEPPER MODELS INC 2526 Washington DnbuqmeIA 52001 3191583-4830 selage Use favorite material cover wing may done either before after epoxying fuselage Again sure maintain correct alignment mounting wing model now ready finish sanded painted trimmed Landing gear Cut two 21-in lengths 42 wire Center wire pieces brass tube fuselage mounts bend down hand until parallel flush fuselage sides Bend back out until positioned approximately 45 fuselage Measure 6 fuselage bend wire back under fuselage right angles should have two triangles swinging mounts tips wires just touching under fuselage Cut 12-in piece Y32 wire axle Center between gear legs bind solder securely finished look split 8/2-in piece streamlined thinwalled aluminum strut material epoxy axle section Cut two 1-in lengths %2 brass tubing slide axle wheel bear ings Carefully mount 3-in Williams Broth ers Golden Age wheels About 1 wire should remain axle wing strut tachment Bend back up until points directly wing strut plug points Wing struts must custom fitted distance between axle ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics like selectIng radio radio control works learning fly instructor earning instructor learn basic maneuvers like landing Other chapters expiain cii about ARFa field equipment operating engines assembling airpiane easy learning control installations much Cat Number BOKOO9$1295 GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional Installations topics shown much Cat Number BOKOl 0$1295 HARRY B MIGLEY & SONS INC P 0 sox 532 GLENWOOD ILL 60425 October 1989 189 Kaimbach Publishing Co 1027 N 7th St Milwaukee WI 53233 GETTING AIRBORNE VOLUME GETTING -AIRBORNE Ii a, THIRD ANNUAL Memphis Belle Classic GIANT SCALE FLY OCTOBER 14& 15 1989 SPONSORED BY THE MEMPHIS RADIO CONTROL CLUB MEMPHIS TN AMA & IMAA SANCTIONED IMAA RULES WILL BE OBSERVED IN... FOR FURTHER INFORMATION CALL SILL REalTY EVENINGS 901-7545563 DAYTIME 951-7557 ISO MANLY WILLIAMS CO EVENINGS 901-389-1044 DAYTIME 90 IYR 12330 plug-in points wing Cut Y-struts /8-in ply leaving little long trimming fit Notch shown plan glue l-in-long %2 brass tubes place Glue /16 ply facings struts trim fit Note both right left bevel attachment points Bend four L-shaped attachment fittings Y32 wire struts plugged axle fit four wire pieces Y-ends mark exact attachment points triple-laminated wing ribs mounting points should approximately 3 apart front point 2 leading edge Drill strut mounting holes glue %2 brass tubes Finish sand paint plug struts Control system Make bellcrank mount hard aluminum shown plan Bolt nylon bellcrank pushrod lead-out wires attached fuselage Use adjustable threaded clevis fasten pushrod elevator control horn run lead-out wires through line guide strut form loops attach control lines Engine/muffler/fuel system used new 1954/55 vintage 35 Fox Since engine lacks muffler mounts clamped cutdown Du-Bro Muff-l-Aire Using 10 x 6 prop Fox provides plenty power muffler eliminates some noise although much would like Clamp 4-oz pressurized constant-flow fuel tank fuselage indicated plan youre ready go Flying Before first takeoff sure flying surfaces warp-free properly aligned Balance model center-or gravity indicated plan proto type accomplished securing about oz lead top lower engine mount mounting bolts Youll find Wildcat smooth nimble flier graceful Stunter model has no bad hab its speak ofunless course hap pen rediscover what Roland Rohlfs learned about consequences rigid landing gear Rubber & Eng Power Free Flight DisplayLAThES Control Line Electric Powerl4ILLS METALS BOOKS R/C Airplanes new illustrated 32 pageCOMPLETE CATALOG $200 tabloid sIze catalog IUS & Canada $100 Foreign $3001000 000 nn Valley Hobby Center0- 2100 M Onina Road 837-A W Main St Lanedale PA 19446 Pot-O-GoId/Neitzke Continued page 89 show daring As aircraft worked its way stadium landing brisk wind came up about four feet alti tude reached center field Buccaneers tired old four-stroke engine suddenly stopped crowd gasped cheered Buccaneer simply did vertical touchdown no roll-out ex cited onlookers thought touchdown planned maneuver course other pilots field knew better Anyone whos ever doubted luck Irish would have admit old chestnut just might have kernel truth RC Aircraft Static awards began first place Chris Langton Mishawaka IN Bell Jet Ranger Chris mem ber local Michiana RC Choppers Club Sport class Al Beek Grand Rapids MI came out first version Aeromaster superb Corsair created Phil Von Ville Delaware OH took first place Military Scale Phil spent three half years building top laurels Civilian Scale went show manager Jack Allinger Cap 21 Giant Scale Best Show very realistic P-38 Putt Putt Maru scratch-built Richard Waugh Portage IN received honors Finishing second third Civilian Scale pair highly unusual models mother-and-daughter team built quarterscale sister ships famous Bumble Bee Sky Baby Kathy Tina Mahar hail Osceola IN AMA notably present Pot-O Gold show again year Jim Sears 190 Model Aviation VEND MOUNTS THE VIBRATION KILLER Fall lual p1001 Ihraa 000 ISOlaliOn 101 25 120 0001000 Fits onualin 111011 819116It-at mounla Typical v511100 ISAuCtIOn 0170% Mao 95% ConASI8 01 n10011s Ia 1011001101018 Sbound wash, lublilo ISIluClIaflS.00 Sand 9129501100k, fllOflaO Old10110 pan Ia GSA PROGIJOYN PG SOS 36025 SARASOYA FL S42S 8133774252 FL fldanlS add 7208010 Ida IRPORMAYION 8000 &ASE
Edition: Model Aviation - 1989/10
Page Numbers: 85, 86, 87, 188, 189, 190
YOU COULD HEAR IT COMING 10 miles out Texas Wildcat its slip stream howling through brass tubes fuselage-mounted box radiators gave ter rifying screech roared wideopen pylon turn nearly 200 mph Its easy see racer nicknamed Whis tling Bill Texas Wildcat its sister ship Cactus Kitten sponsored flamboy ant Texas oilman aviation enthusiast CEJ Cox strong-willed wife Nel lie unsuccessful attempt bring prestigious international Gordon Bennett Trophy race Houston April 13 1920 Nellie already famous being first woman America have own personal plane pilot ordered Cur tiss Aeroplane Company build Gor don Bennett racer Two months later Mr Cox ordered second racer era airplanes looked like flying bird cages Wildcat Kitten notable being 90-day wonders three months go before finished racers shipped France design emphasis max imizing speed time design details project kept secret engine new Curtiss 430-hp C12 fuselage planked stressedskin veneer doped fabric covered wings Wildcat built two sets wingsa 32-ft high-lift wing test flying thin 25-ft doublecambered airfoil racing Finally rigid landing gear useda decision fateThis nifty CL sport/stunt profile model innova tive ill-starred early-20s racer its best 30 40 engine turning 10 x 6 prop Its easy fly has no bad habits U Bill Darkow ful consequences Coxs dream Both racers could converted bi planes model presented uses racing wing thick symmetrical airfoil Test pilot Roland Rohlfs first flew Wild cat shortly after christened Nellie racer exhibited aileron flutter severe enough nearly end Rohlfs career quickly corrected completed test flights Wildcat though ran out time putting Kitten through its paces Nellie persuaded husband assign pilot own choice fly Gordon Bennett race instead Rohlfs Furious snub Rohlfs talked Cox signing agreement reassigned other pilot Kitten clinched matters tak ing one-inch brush some black paint quickly slapped Texas Wildcat block letters both sides plane Unfortunately piloting dispute foretaste Pandoras box problems hounded Wildcat point forward Organizational prob lems flaws hastily executed de sign became distressingly obvious soon planes arrived France First credibly monoplane wings Left The wing strut components shown 2 brass plug-in tubes already installed Right Details control system bellcrank mount made hard aluminum bolted fuselage nylon bellcrank pushrod lead-out wires already tached can also see wing struts plugged protruding axle ends dummy exhaust stack simulated radiator left America meant Wild cat assembled its untested bi plane form Rohlfs opened throttle its first flight plane wouldnt movethe extremely high pitched racing prop simply didnt have enough bite meant Wildcat pushed start its takeoff run plane covered whole airstrip part farmers field before airborne Once aloft airplane pitched violently Rohlfs barely able get back field land safely pronounced entire flight nightmare desperation designers stayed up night laying out new ribs spars workspace help gallantly provided French Moraine-Saulnier fac tory new set biplane wings com pleted fitted just four days However Wildcat Etampes 7 am next day qualify time biplane wings com pleted finished already late afternoon Time running out Still smelling fresh dope racer rolled out putting enough fuel 30-mile flight Rohlfs took off dusk Just lifted otf wheels struck hidden rut plane bounced air Rejoicing what described planes greatly improved flight characteristics' Rohlfs unaware shock broken wheel spokes rigid landing gear As turned final approach field Etampes engine quit Rohlfs prepared dead-stick landing wheels touched broken spokes collapsed rigid gear dug airplane tlipped fuselage broke half Coxs attempt bring Gordon Ben nett Trophy race Houston quite liter ally lost its wheels Fortunately pi lot no fire Rohlfs worst injury dislocated shoulder Cactus Kitten meantime never uncrated Shipped back America converted triplane raced 86 Model Aviation Left Component parts basic airframe laid out fuselage halves joined engine mounts glued place Right wing its sheeted leading edge forming strong D-spar profile fuselage tail section finished ready assembly Len ihe landing gear installed finished fuselage gear formed two 21-in lengths 3A2 wire axle formed same-diameter wire cut 12 Right photo shows split thin-walled aluminum strut fairing covering axle assembly Three inch Williams Brothers wheels installed %2-0D brass tube bearings Note protruding axle designed receive wing strut some success Construction Wildcat has three distinctive features improve flight safety contribute ease finishing exterior-mounted con trol system landing gear tied di rectly x 2/8 x 12-in engine mounts Together unique plug-in wing struts added after model fin ished Wing Make rib pattern thin metal plywood Cut ribs three sheets x x 36-in balsa stock using re mainder finish rudder Join wing spars four /16 x x 6in ply doublers Cut half-depth notches 2-in centers main spar wing ribs Cut 24-in leading trailing edge planking strips two sheets 546 x 3 x 36-in balsa Use remainder cap strips center section planking Mark 2-in spaces rear spar inside trailing edge planking Assem ble ribs spars gluing Note double ribs center section triple-laminated ribs strut tachment points Pin entire lower half trailing Continued page 188 oiIi N ----m2 5OOOuO K ix 25 I- C~ 54 Uto C 0 = ~Ja maamaa_ SF-I-LUIMlWa K at-a maCm 0 54% U i C C U 0 0 maCC nI 2I-e0200FOctober 1989 87 Close-up shot showing V-strut plugged wing Study text plan care fully fitting mounts critical Close-up photo showing details wing strut plugged axle assem bly creates strong rigid landing gear/wing support assembly thatll withstand hard use ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE model built rules should able flown pitted intermediate-level partici pants rules appear work successfully drizzle circuit could used Rac ing enthusiasts other areas country Basically rules follow AMA Slow Rat Event 312 rules Deviations AMA rules areas engine requirements fuel tank design pull-test control line specifica tion quote Northwest rules respect engine all operate suction feed engine shall plain-bearing type single bypass intake port No variable in-flight adjusting carburetors allowed used AMA Slow Rat Race however other modification intake permissible also no restriction regarding engine rework ex cept major components shall produced original manufacturer no nonfactory material may added engine respect fuel tank cated outboard side fuselage tank may designed cowl en gine Pull test 35 lb Lines stranded construction Propellers Scale Racing have asked several Racers typical starting point Scale Race prop generally use KellyWizard III McCollum/Garner-type Scale Racing propeller After removing flashing Kelly prop will generally require thinning pitch distribution both props should follows measured Prather prop gauge Station I3 3 pitch Station II3 4 pitch Station 1114 4 pitch Station V4/2 pich Station VI43A pitch Station VII5 pitch Station VIII54 pitch After props pitched thin upper sur face blade tips around 025030 thick carefully balance prop using dynamic balancer general length prop will 6 however have found some engines require 63/5-in prop some blade short 6A will have try several propeller mod ifications both test stand flight plane/engine combination achieve maxi mum speeds As always solicit comments photos Texas Wildcat/Darkow Continued page 87 edge flat surface being careful keep straight Glue rear wing ribs lower half trailing edge leaving / clearance back Glue up per half trailing edge rear lower half wing ribs Remove wing building board Mark wing rib locations 2-in intervals A-in leading edge glue ribs place Rubberbands may used hold everything together After checking alignment carefully glue ribs spars Add leading edge planking complete D-tube spar wing will become quite rigid Plank cen ter section install cap strips glue shape tips Set wing aside time being drilling holes strut fittings 1uselage Cut upper lower halves shape two pieces /2 x 3 x 36-in medium-soft balsa Join center line Make cutouts wing tween engine mounts Epoxy engine mounts place Cut /16 ply nose doublers shape glue fuselage Drill landing gear mount holes through lower engine mount indicated plan Glue %2OD brass tubes holes flush fuselage sides Drill %-in holes en gine bellcrank mounts dummy ex hausts drill 12A-in holes %-in centers shown plan glue 1-in lengths A-in doweling holes Tail assembly Cut rudder stabilizer elevator shape Join elevator halves strip /6 x A-in spruce Join elevator stabilizer nylon hinges Cut out stabilizer slot glue tail assembly fuselage being care ful maintain correct alignment Mount /32 wire tail skid spruce block glue unit notch rear fu 188 Model Aviation TWO NEW FLIGHT BOXES Completely assembled finished Made uSA Both top qsatity wood COnOtruction Two large drawers unique drawer locka small boo 0 plun shipping large boo $12500 plus shipping includes met compartmentbattery/power panel compartmentadlustable fuselage Cradles Mosey back guarastee Send SI tsr apace call 14151 747-O$47 leave meseage Flights Fancy Aesmudellng P0 Boo La Honda Ca B4020 CL Racing/Ballard Continued page 184 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE CULPEPPER MODELS INC 2526 Washington DnbuqmeIA 52001 3191583-4830 selage Use favorite material cover wing may done either before after epoxying fuselage Again sure maintain correct alignment mounting wing model now ready finish sanded painted trimmed Landing gear Cut two 21-in lengths 42 wire Center wire pieces brass tube fuselage mounts bend down hand until parallel flush fuselage sides Bend back out until positioned approximately 45 fuselage Measure 6 fuselage bend wire back under fuselage right angles should have two triangles swinging mounts tips wires just touching under fuselage Cut 12-in piece Y32 wire axle Center between gear legs bind solder securely finished look split 8/2-in piece streamlined thinwalled aluminum strut material epoxy axle section Cut two 1-in lengths %2 brass tubing slide axle wheel bear ings Carefully mount 3-in Williams Broth ers Golden Age wheels About 1 wire should remain axle wing strut tachment Bend back up until points directly wing strut plug points Wing struts must custom fitted distance between axle ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics like selectIng radio radio control works learning fly instructor earning instructor learn basic maneuvers like landing Other chapters expiain cii about ARFa field equipment operating engines assembling airpiane easy learning control installations much Cat Number BOKOO9$1295 GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional Installations topics shown much Cat Number BOKOl 0$1295 HARRY B MIGLEY & SONS INC P 0 sox 532 GLENWOOD ILL 60425 October 1989 189 Kaimbach Publishing Co 1027 N 7th St Milwaukee WI 53233 GETTING AIRBORNE VOLUME GETTING -AIRBORNE Ii a, THIRD ANNUAL Memphis Belle Classic GIANT SCALE FLY OCTOBER 14& 15 1989 SPONSORED BY THE MEMPHIS RADIO CONTROL CLUB MEMPHIS TN AMA & IMAA SANCTIONED IMAA RULES WILL BE OBSERVED IN... FOR FURTHER INFORMATION CALL SILL REalTY EVENINGS 901-7545563 DAYTIME 951-7557 ISO MANLY WILLIAMS CO EVENINGS 901-389-1044 DAYTIME 90 IYR 12330 plug-in points wing Cut Y-struts /8-in ply leaving little long trimming fit Notch shown plan glue l-in-long %2 brass tubes place Glue /16 ply facings struts trim fit Note both right left bevel attachment points Bend four L-shaped attachment fittings Y32 wire struts plugged axle fit four wire pieces Y-ends mark exact attachment points triple-laminated wing ribs mounting points should approximately 3 apart front point 2 leading edge Drill strut mounting holes glue %2 brass tubes Finish sand paint plug struts Control system Make bellcrank mount hard aluminum shown plan Bolt nylon bellcrank pushrod lead-out wires attached fuselage Use adjustable threaded clevis fasten pushrod elevator control horn run lead-out wires through line guide strut form loops attach control lines Engine/muffler/fuel system used new 1954/55 vintage 35 Fox Since engine lacks muffler mounts clamped cutdown Du-Bro Muff-l-Aire Using 10 x 6 prop Fox provides plenty power muffler eliminates some noise although much would like Clamp 4-oz pressurized constant-flow fuel tank fuselage indicated plan youre ready go Flying Before first takeoff sure flying surfaces warp-free properly aligned Balance model center-or gravity indicated plan proto type accomplished securing about oz lead top lower engine mount mounting bolts Youll find Wildcat smooth nimble flier graceful Stunter model has no bad hab its speak ofunless course hap pen rediscover what Roland Rohlfs learned about consequences rigid landing gear Rubber & Eng Power Free Flight DisplayLAThES Control Line Electric Powerl4ILLS METALS BOOKS R/C Airplanes new illustrated 32 pageCOMPLETE CATALOG $200 tabloid sIze catalog IUS & Canada $100 Foreign $3001000 000 nn Valley Hobby Center0- 2100 M Onina Road 837-A W Main St Lanedale PA 19446 Pot-O-GoId/Neitzke Continued page 89 show daring As aircraft worked its way stadium landing brisk wind came up about four feet alti tude reached center field Buccaneers tired old four-stroke engine suddenly stopped crowd gasped cheered Buccaneer simply did vertical touchdown no roll-out ex cited onlookers thought touchdown planned maneuver course other pilots field knew better Anyone whos ever doubted luck Irish would have admit old chestnut just might have kernel truth RC Aircraft Static awards began first place Chris Langton Mishawaka IN Bell Jet Ranger Chris mem ber local Michiana RC Choppers Club Sport class Al Beek Grand Rapids MI came out first version Aeromaster superb Corsair created Phil Von Ville Delaware OH took first place Military Scale Phil spent three half years building top laurels Civilian Scale went show manager Jack Allinger Cap 21 Giant Scale Best Show very realistic P-38 Putt Putt Maru scratch-built Richard Waugh Portage IN received honors Finishing second third Civilian Scale pair highly unusual models mother-and-daughter team built quarterscale sister ships famous Bumble Bee Sky Baby Kathy Tina Mahar hail Osceola IN AMA notably present Pot-O Gold show again year Jim Sears 190 Model Aviation VEND MOUNTS THE VIBRATION KILLER Fall lual p1001 Ihraa 000 ISOlaliOn 101 25 120 0001000 Fits onualin 111011 819116It-at mounla Typical v511100 ISAuCtIOn 0170% Mao 95% ConASI8 01 n10011s Ia 1011001101018 Sbound wash, lublilo ISIluClIaflS.00 Sand 9129501100k, fllOflaO Old10110 pan Ia GSA PROGIJOYN PG SOS 36025 SARASOYA FL S42S 8133774252 FL fldanlS add 7208010 Ida IRPORMAYION 8000 &ASE
Edition: Model Aviation - 1989/10
Page Numbers: 85, 86, 87, 188, 189, 190
YOU COULD HEAR IT COMING 10 miles out Texas Wildcat its slip stream howling through brass tubes fuselage-mounted box radiators gave ter rifying screech roared wideopen pylon turn nearly 200 mph Its easy see racer nicknamed Whis tling Bill Texas Wildcat its sister ship Cactus Kitten sponsored flamboy ant Texas oilman aviation enthusiast CEJ Cox strong-willed wife Nel lie unsuccessful attempt bring prestigious international Gordon Bennett Trophy race Houston April 13 1920 Nellie already famous being first woman America have own personal plane pilot ordered Cur tiss Aeroplane Company build Gor don Bennett racer Two months later Mr Cox ordered second racer era airplanes looked like flying bird cages Wildcat Kitten notable being 90-day wonders three months go before finished racers shipped France design emphasis max imizing speed time design details project kept secret engine new Curtiss 430-hp C12 fuselage planked stressedskin veneer doped fabric covered wings Wildcat built two sets wingsa 32-ft high-lift wing test flying thin 25-ft doublecambered airfoil racing Finally rigid landing gear useda decision fateThis nifty CL sport/stunt profile model innova tive ill-starred early-20s racer its best 30 40 engine turning 10 x 6 prop Its easy fly has no bad habits U Bill Darkow ful consequences Coxs dream Both racers could converted bi planes model presented uses racing wing thick symmetrical airfoil Test pilot Roland Rohlfs first flew Wild cat shortly after christened Nellie racer exhibited aileron flutter severe enough nearly end Rohlfs career quickly corrected completed test flights Wildcat though ran out time putting Kitten through its paces Nellie persuaded husband assign pilot own choice fly Gordon Bennett race instead Rohlfs Furious snub Rohlfs talked Cox signing agreement reassigned other pilot Kitten clinched matters tak ing one-inch brush some black paint quickly slapped Texas Wildcat block letters both sides plane Unfortunately piloting dispute foretaste Pandoras box problems hounded Wildcat point forward Organizational prob lems flaws hastily executed de sign became distressingly obvious soon planes arrived France First credibly monoplane wings Left The wing strut components shown 2 brass plug-in tubes already installed Right Details control system bellcrank mount made hard aluminum bolted fuselage nylon bellcrank pushrod lead-out wires already tached can also see wing struts plugged protruding axle ends dummy exhaust stack simulated radiator left America meant Wild cat assembled its untested bi plane form Rohlfs opened throttle its first flight plane wouldnt movethe extremely high pitched racing prop simply didnt have enough bite meant Wildcat pushed start its takeoff run plane covered whole airstrip part farmers field before airborne Once aloft airplane pitched violently Rohlfs barely able get back field land safely pronounced entire flight nightmare desperation designers stayed up night laying out new ribs spars workspace help gallantly provided French Moraine-Saulnier fac tory new set biplane wings com pleted fitted just four days However Wildcat Etampes 7 am next day qualify time biplane wings com pleted finished already late afternoon Time running out Still smelling fresh dope racer rolled out putting enough fuel 30-mile flight Rohlfs took off dusk Just lifted otf wheels struck hidden rut plane bounced air Rejoicing what described planes greatly improved flight characteristics' Rohlfs unaware shock broken wheel spokes rigid landing gear As turned final approach field Etampes engine quit Rohlfs prepared dead-stick landing wheels touched broken spokes collapsed rigid gear dug airplane tlipped fuselage broke half Coxs attempt bring Gordon Ben nett Trophy race Houston quite liter ally lost its wheels Fortunately pi lot no fire Rohlfs worst injury dislocated shoulder Cactus Kitten meantime never uncrated Shipped back America converted triplane raced 86 Model Aviation Left Component parts basic airframe laid out fuselage halves joined engine mounts glued place Right wing its sheeted leading edge forming strong D-spar profile fuselage tail section finished ready assembly Len ihe landing gear installed finished fuselage gear formed two 21-in lengths 3A2 wire axle formed same-diameter wire cut 12 Right photo shows split thin-walled aluminum strut fairing covering axle assembly Three inch Williams Brothers wheels installed %2-0D brass tube bearings Note protruding axle designed receive wing strut some success Construction Wildcat has three distinctive features improve flight safety contribute ease finishing exterior-mounted con trol system landing gear tied di rectly x 2/8 x 12-in engine mounts Together unique plug-in wing struts added after model fin ished Wing Make rib pattern thin metal plywood Cut ribs three sheets x x 36-in balsa stock using re mainder finish rudder Join wing spars four /16 x x 6in ply doublers Cut half-depth notches 2-in centers main spar wing ribs Cut 24-in leading trailing edge planking strips two sheets 546 x 3 x 36-in balsa Use remainder cap strips center section planking Mark 2-in spaces rear spar inside trailing edge planking Assem ble ribs spars gluing Note double ribs center section triple-laminated ribs strut tachment points Pin entire lower half trailing Continued page 188 oiIi N ----m2 5OOOuO K ix 25 I- C~ 54 Uto C 0 = ~Ja maamaa_ SF-I-LUIMlWa K at-a maCm 0 54% U i C C U 0 0 maCC nI 2I-e0200FOctober 1989 87 Close-up shot showing V-strut plugged wing Study text plan care fully fitting mounts critical Close-up photo showing details wing strut plugged axle assem bly creates strong rigid landing gear/wing support assembly thatll withstand hard use ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE model built rules should able flown pitted intermediate-level partici pants rules appear work successfully drizzle circuit could used Rac ing enthusiasts other areas country Basically rules follow AMA Slow Rat Event 312 rules Deviations AMA rules areas engine requirements fuel tank design pull-test control line specifica tion quote Northwest rules respect engine all operate suction feed engine shall plain-bearing type single bypass intake port No variable in-flight adjusting carburetors allowed used AMA Slow Rat Race however other modification intake permissible also no restriction regarding engine rework ex cept major components shall produced original manufacturer no nonfactory material may added engine respect fuel tank cated outboard side fuselage tank may designed cowl en gine Pull test 35 lb Lines stranded construction Propellers Scale Racing have asked several Racers typical starting point Scale Race prop generally use KellyWizard III McCollum/Garner-type Scale Racing propeller After removing flashing Kelly prop will generally require thinning pitch distribution both props should follows measured Prather prop gauge Station I3 3 pitch Station II3 4 pitch Station 1114 4 pitch Station V4/2 pich Station VI43A pitch Station VII5 pitch Station VIII54 pitch After props pitched thin upper sur face blade tips around 025030 thick carefully balance prop using dynamic balancer general length prop will 6 however have found some engines require 63/5-in prop some blade short 6A will have try several propeller mod ifications both test stand flight plane/engine combination achieve maxi mum speeds As always solicit comments photos Texas Wildcat/Darkow Continued page 87 edge flat surface being careful keep straight Glue rear wing ribs lower half trailing edge leaving / clearance back Glue up per half trailing edge rear lower half wing ribs Remove wing building board Mark wing rib locations 2-in intervals A-in leading edge glue ribs place Rubberbands may used hold everything together After checking alignment carefully glue ribs spars Add leading edge planking complete D-tube spar wing will become quite rigid Plank cen ter section install cap strips glue shape tips Set wing aside time being drilling holes strut fittings 1uselage Cut upper lower halves shape two pieces /2 x 3 x 36-in medium-soft balsa Join center line Make cutouts wing tween engine mounts Epoxy engine mounts place Cut /16 ply nose doublers shape glue fuselage Drill landing gear mount holes through lower engine mount indicated plan Glue %2OD brass tubes holes flush fuselage sides Drill %-in holes en gine bellcrank mounts dummy ex hausts drill 12A-in holes %-in centers shown plan glue 1-in lengths A-in doweling holes Tail assembly Cut rudder stabilizer elevator shape Join elevator halves strip /6 x A-in spruce Join elevator stabilizer nylon hinges Cut out stabilizer slot glue tail assembly fuselage being care ful maintain correct alignment Mount /32 wire tail skid spruce block glue unit notch rear fu 188 Model Aviation TWO NEW FLIGHT BOXES Completely assembled finished Made uSA Both top qsatity wood COnOtruction Two large drawers unique drawer locka small boo 0 plun shipping large boo $12500 plus shipping includes met compartmentbattery/power panel compartmentadlustable fuselage Cradles Mosey back guarastee Send SI tsr apace call 14151 747-O$47 leave meseage Flights Fancy Aesmudellng P0 Boo La Honda Ca B4020 CL Racing/Ballard Continued page 184 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE CULPEPPER MODELS INC 2526 Washington DnbuqmeIA 52001 3191583-4830 selage Use favorite material cover wing may done either before after epoxying fuselage Again sure maintain correct alignment mounting wing model now ready finish sanded painted trimmed Landing gear Cut two 21-in lengths 42 wire Center wire pieces brass tube fuselage mounts bend down hand until parallel flush fuselage sides Bend back out until positioned approximately 45 fuselage Measure 6 fuselage bend wire back under fuselage right angles should have two triangles swinging mounts tips wires just touching under fuselage Cut 12-in piece Y32 wire axle Center between gear legs bind solder securely finished look split 8/2-in piece streamlined thinwalled aluminum strut material epoxy axle section Cut two 1-in lengths %2 brass tubing slide axle wheel bear ings Carefully mount 3-in Williams Broth ers Golden Age wheels About 1 wire should remain axle wing strut tachment Bend back up until points directly wing strut plug points Wing struts must custom fitted distance between axle ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics like selectIng radio radio control works learning fly instructor earning instructor learn basic maneuvers like landing Other chapters expiain cii about ARFa field equipment operating engines assembling airpiane easy learning control installations much Cat Number BOKOO9$1295 GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional Installations topics shown much Cat Number BOKOl 0$1295 HARRY B MIGLEY & SONS INC P 0 sox 532 GLENWOOD ILL 60425 October 1989 189 Kaimbach Publishing Co 1027 N 7th St Milwaukee WI 53233 GETTING AIRBORNE VOLUME GETTING -AIRBORNE Ii a, THIRD ANNUAL Memphis Belle Classic GIANT SCALE FLY OCTOBER 14& 15 1989 SPONSORED BY THE MEMPHIS RADIO CONTROL CLUB MEMPHIS TN AMA & IMAA SANCTIONED IMAA RULES WILL BE OBSERVED IN... FOR FURTHER INFORMATION CALL SILL REalTY EVENINGS 901-7545563 DAYTIME 951-7557 ISO MANLY WILLIAMS CO EVENINGS 901-389-1044 DAYTIME 90 IYR 12330 plug-in points wing Cut Y-struts /8-in ply leaving little long trimming fit Notch shown plan glue l-in-long %2 brass tubes place Glue /16 ply facings struts trim fit Note both right left bevel attachment points Bend four L-shaped attachment fittings Y32 wire struts plugged axle fit four wire pieces Y-ends mark exact attachment points triple-laminated wing ribs mounting points should approximately 3 apart front point 2 leading edge Drill strut mounting holes glue %2 brass tubes Finish sand paint plug struts Control system Make bellcrank mount hard aluminum shown plan Bolt nylon bellcrank pushrod lead-out wires attached fuselage Use adjustable threaded clevis fasten pushrod elevator control horn run lead-out wires through line guide strut form loops attach control lines Engine/muffler/fuel system used new 1954/55 vintage 35 Fox Since engine lacks muffler mounts clamped cutdown Du-Bro Muff-l-Aire Using 10 x 6 prop Fox provides plenty power muffler eliminates some noise although much would like Clamp 4-oz pressurized constant-flow fuel tank fuselage indicated plan youre ready go Flying Before first takeoff sure flying surfaces warp-free properly aligned Balance model center-or gravity indicated plan proto type accomplished securing about oz lead top lower engine mount mounting bolts Youll find Wildcat smooth nimble flier graceful Stunter model has no bad hab its speak ofunless course hap pen rediscover what Roland Rohlfs learned about consequences rigid landing gear Rubber & Eng Power Free Flight DisplayLAThES Control Line Electric Powerl4ILLS METALS BOOKS R/C Airplanes new illustrated 32 pageCOMPLETE CATALOG $200 tabloid sIze catalog IUS & Canada $100 Foreign $3001000 000 nn Valley Hobby Center0- 2100 M Onina Road 837-A W Main St Lanedale PA 19446 Pot-O-GoId/Neitzke Continued page 89 show daring As aircraft worked its way stadium landing brisk wind came up about four feet alti tude reached center field Buccaneers tired old four-stroke engine suddenly stopped crowd gasped cheered Buccaneer simply did vertical touchdown no roll-out ex cited onlookers thought touchdown planned maneuver course other pilots field knew better Anyone whos ever doubted luck Irish would have admit old chestnut just might have kernel truth RC Aircraft Static awards began first place Chris Langton Mishawaka IN Bell Jet Ranger Chris mem ber local Michiana RC Choppers Club Sport class Al Beek Grand Rapids MI came out first version Aeromaster superb Corsair created Phil Von Ville Delaware OH took first place Military Scale Phil spent three half years building top laurels Civilian Scale went show manager Jack Allinger Cap 21 Giant Scale Best Show very realistic P-38 Putt Putt Maru scratch-built Richard Waugh Portage IN received honors Finishing second third Civilian Scale pair highly unusual models mother-and-daughter team built quarterscale sister ships famous Bumble Bee Sky Baby Kathy Tina Mahar hail Osceola IN AMA notably present Pot-O Gold show again year Jim Sears 190 Model Aviation VEND MOUNTS THE VIBRATION KILLER Fall lual p1001 Ihraa 000 ISOlaliOn 101 25 120 0001000 Fits onualin 111011 819116It-at mounla Typical v511100 ISAuCtIOn 0170% Mao 95% ConASI8 01 n10011s Ia 1011001101018 Sbound wash, lublilo ISIluClIaflS.00 Sand 9129501100k, fllOflaO Old10110 pan Ia GSA PROGIJOYN PG SOS 36025 SARASOYA FL S42S 8133774252 FL fldanlS add 7208010 Ida IRPORMAYION 8000 &ASE
Edition: Model Aviation - 1989/10
Page Numbers: 85, 86, 87, 188, 189, 190
YOU COULD HEAR IT COMING 10 miles out Texas Wildcat its slip stream howling through brass tubes fuselage-mounted box radiators gave ter rifying screech roared wideopen pylon turn nearly 200 mph Its easy see racer nicknamed Whis tling Bill Texas Wildcat its sister ship Cactus Kitten sponsored flamboy ant Texas oilman aviation enthusiast CEJ Cox strong-willed wife Nel lie unsuccessful attempt bring prestigious international Gordon Bennett Trophy race Houston April 13 1920 Nellie already famous being first woman America have own personal plane pilot ordered Cur tiss Aeroplane Company build Gor don Bennett racer Two months later Mr Cox ordered second racer era airplanes looked like flying bird cages Wildcat Kitten notable being 90-day wonders three months go before finished racers shipped France design emphasis max imizing speed time design details project kept secret engine new Curtiss 430-hp C12 fuselage planked stressedskin veneer doped fabric covered wings Wildcat built two sets wingsa 32-ft high-lift wing test flying thin 25-ft doublecambered airfoil racing Finally rigid landing gear useda decision fateThis nifty CL sport/stunt profile model innova tive ill-starred early-20s racer its best 30 40 engine turning 10 x 6 prop Its easy fly has no bad habits U Bill Darkow ful consequences Coxs dream Both racers could converted bi planes model presented uses racing wing thick symmetrical airfoil Test pilot Roland Rohlfs first flew Wild cat shortly after christened Nellie racer exhibited aileron flutter severe enough nearly end Rohlfs career quickly corrected completed test flights Wildcat though ran out time putting Kitten through its paces Nellie persuaded husband assign pilot own choice fly Gordon Bennett race instead Rohlfs Furious snub Rohlfs talked Cox signing agreement reassigned other pilot Kitten clinched matters tak ing one-inch brush some black paint quickly slapped Texas Wildcat block letters both sides plane Unfortunately piloting dispute foretaste Pandoras box problems hounded Wildcat point forward Organizational prob lems flaws hastily executed de sign became distressingly obvious soon planes arrived France First credibly monoplane wings Left The wing strut components shown 2 brass plug-in tubes already installed Right Details control system bellcrank mount made hard aluminum bolted fuselage nylon bellcrank pushrod lead-out wires already tached can also see wing struts plugged protruding axle ends dummy exhaust stack simulated radiator left America meant Wild cat assembled its untested bi plane form Rohlfs opened throttle its first flight plane wouldnt movethe extremely high pitched racing prop simply didnt have enough bite meant Wildcat pushed start its takeoff run plane covered whole airstrip part farmers field before airborne Once aloft airplane pitched violently Rohlfs barely able get back field land safely pronounced entire flight nightmare desperation designers stayed up night laying out new ribs spars workspace help gallantly provided French Moraine-Saulnier fac tory new set biplane wings com pleted fitted just four days However Wildcat Etampes 7 am next day qualify time biplane wings com pleted finished already late afternoon Time running out Still smelling fresh dope racer rolled out putting enough fuel 30-mile flight Rohlfs took off dusk Just lifted otf wheels struck hidden rut plane bounced air Rejoicing what described planes greatly improved flight characteristics' Rohlfs unaware shock broken wheel spokes rigid landing gear As turned final approach field Etampes engine quit Rohlfs prepared dead-stick landing wheels touched broken spokes collapsed rigid gear dug airplane tlipped fuselage broke half Coxs attempt bring Gordon Ben nett Trophy race Houston quite liter ally lost its wheels Fortunately pi lot no fire Rohlfs worst injury dislocated shoulder Cactus Kitten meantime never uncrated Shipped back America converted triplane raced 86 Model Aviation Left Component parts basic airframe laid out fuselage halves joined engine mounts glued place Right wing its sheeted leading edge forming strong D-spar profile fuselage tail section finished ready assembly Len ihe landing gear installed finished fuselage gear formed two 21-in lengths 3A2 wire axle formed same-diameter wire cut 12 Right photo shows split thin-walled aluminum strut fairing covering axle assembly Three inch Williams Brothers wheels installed %2-0D brass tube bearings Note protruding axle designed receive wing strut some success Construction Wildcat has three distinctive features improve flight safety contribute ease finishing exterior-mounted con trol system landing gear tied di rectly x 2/8 x 12-in engine mounts Together unique plug-in wing struts added after model fin ished Wing Make rib pattern thin metal plywood Cut ribs three sheets x x 36-in balsa stock using re mainder finish rudder Join wing spars four /16 x x 6in ply doublers Cut half-depth notches 2-in centers main spar wing ribs Cut 24-in leading trailing edge planking strips two sheets 546 x 3 x 36-in balsa Use remainder cap strips center section planking Mark 2-in spaces rear spar inside trailing edge planking Assem ble ribs spars gluing Note double ribs center section triple-laminated ribs strut tachment points Pin entire lower half trailing Continued page 188 oiIi N ----m2 5OOOuO K ix 25 I- C~ 54 Uto C 0 = ~Ja maamaa_ SF-I-LUIMlWa K at-a maCm 0 54% U i C C U 0 0 maCC nI 2I-e0200FOctober 1989 87 Close-up shot showing V-strut plugged wing Study text plan care fully fitting mounts critical Close-up photo showing details wing strut plugged axle assem bly creates strong rigid landing gear/wing support assembly thatll withstand hard use ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE model built rules should able flown pitted intermediate-level partici pants rules appear work successfully drizzle circuit could used Rac ing enthusiasts other areas country Basically rules follow AMA Slow Rat Event 312 rules Deviations AMA rules areas engine requirements fuel tank design pull-test control line specifica tion quote Northwest rules respect engine all operate suction feed engine shall plain-bearing type single bypass intake port No variable in-flight adjusting carburetors allowed used AMA Slow Rat Race however other modification intake permissible also no restriction regarding engine rework ex cept major components shall produced original manufacturer no nonfactory material may added engine respect fuel tank cated outboard side fuselage tank may designed cowl en gine Pull test 35 lb Lines stranded construction Propellers Scale Racing have asked several Racers typical starting point Scale Race prop generally use KellyWizard III McCollum/Garner-type Scale Racing propeller After removing flashing Kelly prop will generally require thinning pitch distribution both props should follows measured Prather prop gauge Station I3 3 pitch Station II3 4 pitch Station 1114 4 pitch Station V4/2 pich Station VI43A pitch Station VII5 pitch Station VIII54 pitch After props pitched thin upper sur face blade tips around 025030 thick carefully balance prop using dynamic balancer general length prop will 6 however have found some engines require 63/5-in prop some blade short 6A will have try several propeller mod ifications both test stand flight plane/engine combination achieve maxi mum speeds As always solicit comments photos Texas Wildcat/Darkow Continued page 87 edge flat surface being careful keep straight Glue rear wing ribs lower half trailing edge leaving / clearance back Glue up per half trailing edge rear lower half wing ribs Remove wing building board Mark wing rib locations 2-in intervals A-in leading edge glue ribs place Rubberbands may used hold everything together After checking alignment carefully glue ribs spars Add leading edge planking complete D-tube spar wing will become quite rigid Plank cen ter section install cap strips glue shape tips Set wing aside time being drilling holes strut fittings 1uselage Cut upper lower halves shape two pieces /2 x 3 x 36-in medium-soft balsa Join center line Make cutouts wing tween engine mounts Epoxy engine mounts place Cut /16 ply nose doublers shape glue fuselage Drill landing gear mount holes through lower engine mount indicated plan Glue %2OD brass tubes holes flush fuselage sides Drill %-in holes en gine bellcrank mounts dummy ex hausts drill 12A-in holes %-in centers shown plan glue 1-in lengths A-in doweling holes Tail assembly Cut rudder stabilizer elevator shape Join elevator halves strip /6 x A-in spruce Join elevator stabilizer nylon hinges Cut out stabilizer slot glue tail assembly fuselage being care ful maintain correct alignment Mount /32 wire tail skid spruce block glue unit notch rear fu 188 Model Aviation TWO NEW FLIGHT BOXES Completely assembled finished Made uSA Both top qsatity wood COnOtruction Two large drawers unique drawer locka small boo 0 plun shipping large boo $12500 plus shipping includes met compartmentbattery/power panel compartmentadlustable fuselage Cradles Mosey back guarastee Send SI tsr apace call 14151 747-O$47 leave meseage Flights Fancy Aesmudellng P0 Boo La Honda Ca B4020 CL Racing/Ballard Continued page 184 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE CULPEPPER MODELS INC 2526 Washington DnbuqmeIA 52001 3191583-4830 selage Use favorite material cover wing may done either before after epoxying fuselage Again sure maintain correct alignment mounting wing model now ready finish sanded painted trimmed Landing gear Cut two 21-in lengths 42 wire Center wire pieces brass tube fuselage mounts bend down hand until parallel flush fuselage sides Bend back out until positioned approximately 45 fuselage Measure 6 fuselage bend wire back under fuselage right angles should have two triangles swinging mounts tips wires just touching under fuselage Cut 12-in piece Y32 wire axle Center between gear legs bind solder securely finished look split 8/2-in piece streamlined thinwalled aluminum strut material epoxy axle section Cut two 1-in lengths %2 brass tubing slide axle wheel bear ings Carefully mount 3-in Williams Broth ers Golden Age wheels About 1 wire should remain axle wing strut tachment Bend back up until points directly wing strut plug points Wing struts must custom fitted distance between axle ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics like selectIng radio radio control works learning fly instructor earning instructor learn basic maneuvers like landing Other chapters expiain cii about ARFa field equipment operating engines assembling airpiane easy learning control installations much Cat Number BOKOO9$1295 GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional Installations topics shown much Cat Number BOKOl 0$1295 HARRY B MIGLEY & SONS INC P 0 sox 532 GLENWOOD ILL 60425 October 1989 189 Kaimbach Publishing Co 1027 N 7th St Milwaukee WI 53233 GETTING AIRBORNE VOLUME GETTING -AIRBORNE Ii a, THIRD ANNUAL Memphis Belle Classic GIANT SCALE FLY OCTOBER 14& 15 1989 SPONSORED BY THE MEMPHIS RADIO CONTROL CLUB MEMPHIS TN AMA & IMAA SANCTIONED IMAA RULES WILL BE OBSERVED IN... FOR FURTHER INFORMATION CALL SILL REalTY EVENINGS 901-7545563 DAYTIME 951-7557 ISO MANLY WILLIAMS CO EVENINGS 901-389-1044 DAYTIME 90 IYR 12330 plug-in points wing Cut Y-struts /8-in ply leaving little long trimming fit Notch shown plan glue l-in-long %2 brass tubes place Glue /16 ply facings struts trim fit Note both right left bevel attachment points Bend four L-shaped attachment fittings Y32 wire struts plugged axle fit four wire pieces Y-ends mark exact attachment points triple-laminated wing ribs mounting points should approximately 3 apart front point 2 leading edge Drill strut mounting holes glue %2 brass tubes Finish sand paint plug struts Control system Make bellcrank mount hard aluminum shown plan Bolt nylon bellcrank pushrod lead-out wires attached fuselage Use adjustable threaded clevis fasten pushrod elevator control horn run lead-out wires through line guide strut form loops attach control lines Engine/muffler/fuel system used new 1954/55 vintage 35 Fox Since engine lacks muffler mounts clamped cutdown Du-Bro Muff-l-Aire Using 10 x 6 prop Fox provides plenty power muffler eliminates some noise although much would like Clamp 4-oz pressurized constant-flow fuel tank fuselage indicated plan youre ready go Flying Before first takeoff sure flying surfaces warp-free properly aligned Balance model center-or gravity indicated plan proto type accomplished securing about oz lead top lower engine mount mounting bolts Youll find Wildcat smooth nimble flier graceful Stunter model has no bad hab its speak ofunless course hap pen rediscover what Roland Rohlfs learned about consequences rigid landing gear Rubber & Eng Power Free Flight DisplayLAThES Control Line Electric Powerl4ILLS METALS BOOKS R/C Airplanes new illustrated 32 pageCOMPLETE CATALOG $200 tabloid sIze catalog IUS & Canada $100 Foreign $3001000 000 nn Valley Hobby Center0- 2100 M Onina Road 837-A W Main St Lanedale PA 19446 Pot-O-GoId/Neitzke Continued page 89 show daring As aircraft worked its way stadium landing brisk wind came up about four feet alti tude reached center field Buccaneers tired old four-stroke engine suddenly stopped crowd gasped cheered Buccaneer simply did vertical touchdown no roll-out ex cited onlookers thought touchdown planned maneuver course other pilots field knew better Anyone whos ever doubted luck Irish would have admit old chestnut just might have kernel truth RC Aircraft Static awards began first place Chris Langton Mishawaka IN Bell Jet Ranger Chris mem ber local Michiana RC Choppers Club Sport class Al Beek Grand Rapids MI came out first version Aeromaster superb Corsair created Phil Von Ville Delaware OH took first place Military Scale Phil spent three half years building top laurels Civilian Scale went show manager Jack Allinger Cap 21 Giant Scale Best Show very realistic P-38 Putt Putt Maru scratch-built Richard Waugh Portage IN received honors Finishing second third Civilian Scale pair highly unusual models mother-and-daughter team built quarterscale sister ships famous Bumble Bee Sky Baby Kathy Tina Mahar hail Osceola IN AMA notably present Pot-O Gold show again year Jim Sears 190 Model Aviation VEND MOUNTS THE VIBRATION KILLER Fall lual p1001 Ihraa 000 ISOlaliOn 101 25 120 0001000 Fits onualin 111011 819116It-at mounla Typical v511100 ISAuCtIOn 0170% Mao 95% ConASI8 01 n10011s Ia 1011001101018 Sbound wash, lublilo ISIluClIaflS.00 Sand 9129501100k, fllOflaO Old10110 pan Ia GSA PROGIJOYN PG SOS 36025 SARASOYA FL S42S 8133774252 FL fldanlS add 7208010 Ida IRPORMAYION 8000 &ASE
Edition: Model Aviation - 1989/10
Page Numbers: 85, 86, 87, 188, 189, 190
YOU COULD HEAR IT COMING 10 miles out Texas Wildcat its slip stream howling through brass tubes fuselage-mounted box radiators gave ter rifying screech roared wideopen pylon turn nearly 200 mph Its easy see racer nicknamed Whis tling Bill Texas Wildcat its sister ship Cactus Kitten sponsored flamboy ant Texas oilman aviation enthusiast CEJ Cox strong-willed wife Nel lie unsuccessful attempt bring prestigious international Gordon Bennett Trophy race Houston April 13 1920 Nellie already famous being first woman America have own personal plane pilot ordered Cur tiss Aeroplane Company build Gor don Bennett racer Two months later Mr Cox ordered second racer era airplanes looked like flying bird cages Wildcat Kitten notable being 90-day wonders three months go before finished racers shipped France design emphasis max imizing speed time design details project kept secret engine new Curtiss 430-hp C12 fuselage planked stressedskin veneer doped fabric covered wings Wildcat built two sets wingsa 32-ft high-lift wing test flying thin 25-ft doublecambered airfoil racing Finally rigid landing gear useda decision fateThis nifty CL sport/stunt profile model innova tive ill-starred early-20s racer its best 30 40 engine turning 10 x 6 prop Its easy fly has no bad habits U Bill Darkow ful consequences Coxs dream Both racers could converted bi planes model presented uses racing wing thick symmetrical airfoil Test pilot Roland Rohlfs first flew Wild cat shortly after christened Nellie racer exhibited aileron flutter severe enough nearly end Rohlfs career quickly corrected completed test flights Wildcat though ran out time putting Kitten through its paces Nellie persuaded husband assign pilot own choice fly Gordon Bennett race instead Rohlfs Furious snub Rohlfs talked Cox signing agreement reassigned other pilot Kitten clinched matters tak ing one-inch brush some black paint quickly slapped Texas Wildcat block letters both sides plane Unfortunately piloting dispute foretaste Pandoras box problems hounded Wildcat point forward Organizational prob lems flaws hastily executed de sign became distressingly obvious soon planes arrived France First credibly monoplane wings Left The wing strut components shown 2 brass plug-in tubes already installed Right Details control system bellcrank mount made hard aluminum bolted fuselage nylon bellcrank pushrod lead-out wires already tached can also see wing struts plugged protruding axle ends dummy exhaust stack simulated radiator left America meant Wild cat assembled its untested bi plane form Rohlfs opened throttle its first flight plane wouldnt movethe extremely high pitched racing prop simply didnt have enough bite meant Wildcat pushed start its takeoff run plane covered whole airstrip part farmers field before airborne Once aloft airplane pitched violently Rohlfs barely able get back field land safely pronounced entire flight nightmare desperation designers stayed up night laying out new ribs spars workspace help gallantly provided French Moraine-Saulnier fac tory new set biplane wings com pleted fitted just four days However Wildcat Etampes 7 am next day qualify time biplane wings com pleted finished already late afternoon Time running out Still smelling fresh dope racer rolled out putting enough fuel 30-mile flight Rohlfs took off dusk Just lifted otf wheels struck hidden rut plane bounced air Rejoicing what described planes greatly improved flight characteristics' Rohlfs unaware shock broken wheel spokes rigid landing gear As turned final approach field Etampes engine quit Rohlfs prepared dead-stick landing wheels touched broken spokes collapsed rigid gear dug airplane tlipped fuselage broke half Coxs attempt bring Gordon Ben nett Trophy race Houston quite liter ally lost its wheels Fortunately pi lot no fire Rohlfs worst injury dislocated shoulder Cactus Kitten meantime never uncrated Shipped back America converted triplane raced 86 Model Aviation Left Component parts basic airframe laid out fuselage halves joined engine mounts glued place Right wing its sheeted leading edge forming strong D-spar profile fuselage tail section finished ready assembly Len ihe landing gear installed finished fuselage gear formed two 21-in lengths 3A2 wire axle formed same-diameter wire cut 12 Right photo shows split thin-walled aluminum strut fairing covering axle assembly Three inch Williams Brothers wheels installed %2-0D brass tube bearings Note protruding axle designed receive wing strut some success Construction Wildcat has three distinctive features improve flight safety contribute ease finishing exterior-mounted con trol system landing gear tied di rectly x 2/8 x 12-in engine mounts Together unique plug-in wing struts added after model fin ished Wing Make rib pattern thin metal plywood Cut ribs three sheets x x 36-in balsa stock using re mainder finish rudder Join wing spars four /16 x x 6in ply doublers Cut half-depth notches 2-in centers main spar wing ribs Cut 24-in leading trailing edge planking strips two sheets 546 x 3 x 36-in balsa Use remainder cap strips center section planking Mark 2-in spaces rear spar inside trailing edge planking Assem ble ribs spars gluing Note double ribs center section triple-laminated ribs strut tachment points Pin entire lower half trailing Continued page 188 oiIi N ----m2 5OOOuO K ix 25 I- C~ 54 Uto C 0 = ~Ja maamaa_ SF-I-LUIMlWa K at-a maCm 0 54% U i C C U 0 0 maCC nI 2I-e0200FOctober 1989 87 Close-up shot showing V-strut plugged wing Study text plan care fully fitting mounts critical Close-up photo showing details wing strut plugged axle assem bly creates strong rigid landing gear/wing support assembly thatll withstand hard use ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE model built rules should able flown pitted intermediate-level partici pants rules appear work successfully drizzle circuit could used Rac ing enthusiasts other areas country Basically rules follow AMA Slow Rat Event 312 rules Deviations AMA rules areas engine requirements fuel tank design pull-test control line specifica tion quote Northwest rules respect engine all operate suction feed engine shall plain-bearing type single bypass intake port No variable in-flight adjusting carburetors allowed used AMA Slow Rat Race however other modification intake permissible also no restriction regarding engine rework ex cept major components shall produced original manufacturer no nonfactory material may added engine respect fuel tank cated outboard side fuselage tank may designed cowl en gine Pull test 35 lb Lines stranded construction Propellers Scale Racing have asked several Racers typical starting point Scale Race prop generally use KellyWizard III McCollum/Garner-type Scale Racing propeller After removing flashing Kelly prop will generally require thinning pitch distribution both props should follows measured Prather prop gauge Station I3 3 pitch Station II3 4 pitch Station 1114 4 pitch Station V4/2 pich Station VI43A pitch Station VII5 pitch Station VIII54 pitch After props pitched thin upper sur face blade tips around 025030 thick carefully balance prop using dynamic balancer general length prop will 6 however have found some engines require 63/5-in prop some blade short 6A will have try several propeller mod ifications both test stand flight plane/engine combination achieve maxi mum speeds As always solicit comments photos Texas Wildcat/Darkow Continued page 87 edge flat surface being careful keep straight Glue rear wing ribs lower half trailing edge leaving / clearance back Glue up per half trailing edge rear lower half wing ribs Remove wing building board Mark wing rib locations 2-in intervals A-in leading edge glue ribs place Rubberbands may used hold everything together After checking alignment carefully glue ribs spars Add leading edge planking complete D-tube spar wing will become quite rigid Plank cen ter section install cap strips glue shape tips Set wing aside time being drilling holes strut fittings 1uselage Cut upper lower halves shape two pieces /2 x 3 x 36-in medium-soft balsa Join center line Make cutouts wing tween engine mounts Epoxy engine mounts place Cut /16 ply nose doublers shape glue fuselage Drill landing gear mount holes through lower engine mount indicated plan Glue %2OD brass tubes holes flush fuselage sides Drill %-in holes en gine bellcrank mounts dummy ex hausts drill 12A-in holes %-in centers shown plan glue 1-in lengths A-in doweling holes Tail assembly Cut rudder stabilizer elevator shape Join elevator halves strip /6 x A-in spruce Join elevator stabilizer nylon hinges Cut out stabilizer slot glue tail assembly fuselage being care ful maintain correct alignment Mount /32 wire tail skid spruce block glue unit notch rear fu 188 Model Aviation TWO NEW FLIGHT BOXES Completely assembled finished Made uSA Both top qsatity wood COnOtruction Two large drawers unique drawer locka small boo 0 plun shipping large boo $12500 plus shipping includes met compartmentbattery/power panel compartmentadlustable fuselage Cradles Mosey back guarastee Send SI tsr apace call 14151 747-O$47 leave meseage Flights Fancy Aesmudellng P0 Boo La Honda Ca B4020 CL Racing/Ballard Continued page 184 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE CULPEPPER MODELS INC 2526 Washington DnbuqmeIA 52001 3191583-4830 selage Use favorite material cover wing may done either before after epoxying fuselage Again sure maintain correct alignment mounting wing model now ready finish sanded painted trimmed Landing gear Cut two 21-in lengths 42 wire Center wire pieces brass tube fuselage mounts bend down hand until parallel flush fuselage sides Bend back out until positioned approximately 45 fuselage Measure 6 fuselage bend wire back under fuselage right angles should have two triangles swinging mounts tips wires just touching under fuselage Cut 12-in piece Y32 wire axle Center between gear legs bind solder securely finished look split 8/2-in piece streamlined thinwalled aluminum strut material epoxy axle section Cut two 1-in lengths %2 brass tubing slide axle wheel bear ings Carefully mount 3-in Williams Broth ers Golden Age wheels About 1 wire should remain axle wing strut tachment Bend back up until points directly wing strut plug points Wing struts must custom fitted distance between axle ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics like selectIng radio radio control works learning fly instructor earning instructor learn basic maneuvers like landing Other chapters expiain cii about ARFa field equipment operating engines assembling airpiane easy learning control installations much Cat Number BOKOO9$1295 GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional Installations topics shown much Cat Number BOKOl 0$1295 HARRY B MIGLEY & SONS INC P 0 sox 532 GLENWOOD ILL 60425 October 1989 189 Kaimbach Publishing Co 1027 N 7th St Milwaukee WI 53233 GETTING AIRBORNE VOLUME GETTING -AIRBORNE Ii a, THIRD ANNUAL Memphis Belle Classic GIANT SCALE FLY OCTOBER 14& 15 1989 SPONSORED BY THE MEMPHIS RADIO CONTROL CLUB MEMPHIS TN AMA & IMAA SANCTIONED IMAA RULES WILL BE OBSERVED IN... FOR FURTHER INFORMATION CALL SILL REalTY EVENINGS 901-7545563 DAYTIME 951-7557 ISO MANLY WILLIAMS CO EVENINGS 901-389-1044 DAYTIME 90 IYR 12330 plug-in points wing Cut Y-struts /8-in ply leaving little long trimming fit Notch shown plan glue l-in-long %2 brass tubes place Glue /16 ply facings struts trim fit Note both right left bevel attachment points Bend four L-shaped attachment fittings Y32 wire struts plugged axle fit four wire pieces Y-ends mark exact attachment points triple-laminated wing ribs mounting points should approximately 3 apart front point 2 leading edge Drill strut mounting holes glue %2 brass tubes Finish sand paint plug struts Control system Make bellcrank mount hard aluminum shown plan Bolt nylon bellcrank pushrod lead-out wires attached fuselage Use adjustable threaded clevis fasten pushrod elevator control horn run lead-out wires through line guide strut form loops attach control lines Engine/muffler/fuel system used new 1954/55 vintage 35 Fox Since engine lacks muffler mounts clamped cutdown Du-Bro Muff-l-Aire Using 10 x 6 prop Fox provides plenty power muffler eliminates some noise although much would like Clamp 4-oz pressurized constant-flow fuel tank fuselage indicated plan youre ready go Flying Before first takeoff sure flying surfaces warp-free properly aligned Balance model center-or gravity indicated plan proto type accomplished securing about oz lead top lower engine mount mounting bolts Youll find Wildcat smooth nimble flier graceful Stunter model has no bad hab its speak ofunless course hap pen rediscover what Roland Rohlfs learned about consequences rigid landing gear Rubber & Eng Power Free Flight DisplayLAThES Control Line Electric Powerl4ILLS METALS BOOKS R/C Airplanes new illustrated 32 pageCOMPLETE CATALOG $200 tabloid sIze catalog IUS & Canada $100 Foreign $3001000 000 nn Valley Hobby Center0- 2100 M Onina Road 837-A W Main St Lanedale PA 19446 Pot-O-GoId/Neitzke Continued page 89 show daring As aircraft worked its way stadium landing brisk wind came up about four feet alti tude reached center field Buccaneers tired old four-stroke engine suddenly stopped crowd gasped cheered Buccaneer simply did vertical touchdown no roll-out ex cited onlookers thought touchdown planned maneuver course other pilots field knew better Anyone whos ever doubted luck Irish would have admit old chestnut just might have kernel truth RC Aircraft Static awards began first place Chris Langton Mishawaka IN Bell Jet Ranger Chris mem ber local Michiana RC Choppers Club Sport class Al Beek Grand Rapids MI came out first version Aeromaster superb Corsair created Phil Von Ville Delaware OH took first place Military Scale Phil spent three half years building top laurels Civilian Scale went show manager Jack Allinger Cap 21 Giant Scale Best Show very realistic P-38 Putt Putt Maru scratch-built Richard Waugh Portage IN received honors Finishing second third Civilian Scale pair highly unusual models mother-and-daughter team built quarterscale sister ships famous Bumble Bee Sky Baby Kathy Tina Mahar hail Osceola IN AMA notably present Pot-O Gold show again year Jim Sears 190 Model Aviation VEND MOUNTS THE VIBRATION KILLER Fall lual p1001 Ihraa 000 ISOlaliOn 101 25 120 0001000 Fits onualin 111011 819116It-at mounla Typical v511100 ISAuCtIOn 0170% Mao 95% ConASI8 01 n10011s Ia 1011001101018 Sbound wash, lublilo ISIluClIaflS.00 Sand 9129501100k, fllOflaO Old10110 pan Ia GSA PROGIJOYN PG SOS 36025 SARASOYA FL S42S 8133774252 FL fldanlS add 7208010 Ida IRPORMAYION 8000 &ASE
Edition: Model Aviation - 1989/10
Page Numbers: 85, 86, 87, 188, 189, 190
YOU COULD HEAR IT COMING 10 miles out Texas Wildcat its slip stream howling through brass tubes fuselage-mounted box radiators gave ter rifying screech roared wideopen pylon turn nearly 200 mph Its easy see racer nicknamed Whis tling Bill Texas Wildcat its sister ship Cactus Kitten sponsored flamboy ant Texas oilman aviation enthusiast CEJ Cox strong-willed wife Nel lie unsuccessful attempt bring prestigious international Gordon Bennett Trophy race Houston April 13 1920 Nellie already famous being first woman America have own personal plane pilot ordered Cur tiss Aeroplane Company build Gor don Bennett racer Two months later Mr Cox ordered second racer era airplanes looked like flying bird cages Wildcat Kitten notable being 90-day wonders three months go before finished racers shipped France design emphasis max imizing speed time design details project kept secret engine new Curtiss 430-hp C12 fuselage planked stressedskin veneer doped fabric covered wings Wildcat built two sets wingsa 32-ft high-lift wing test flying thin 25-ft doublecambered airfoil racing Finally rigid landing gear useda decision fateThis nifty CL sport/stunt profile model innova tive ill-starred early-20s racer its best 30 40 engine turning 10 x 6 prop Its easy fly has no bad habits U Bill Darkow ful consequences Coxs dream Both racers could converted bi planes model presented uses racing wing thick symmetrical airfoil Test pilot Roland Rohlfs first flew Wild cat shortly after christened Nellie racer exhibited aileron flutter severe enough nearly end Rohlfs career quickly corrected completed test flights Wildcat though ran out time putting Kitten through its paces Nellie persuaded husband assign pilot own choice fly Gordon Bennett race instead Rohlfs Furious snub Rohlfs talked Cox signing agreement reassigned other pilot Kitten clinched matters tak ing one-inch brush some black paint quickly slapped Texas Wildcat block letters both sides plane Unfortunately piloting dispute foretaste Pandoras box problems hounded Wildcat point forward Organizational prob lems flaws hastily executed de sign became distressingly obvious soon planes arrived France First credibly monoplane wings Left The wing strut components shown 2 brass plug-in tubes already installed Right Details control system bellcrank mount made hard aluminum bolted fuselage nylon bellcrank pushrod lead-out wires already tached can also see wing struts plugged protruding axle ends dummy exhaust stack simulated radiator left America meant Wild cat assembled its untested bi plane form Rohlfs opened throttle its first flight plane wouldnt movethe extremely high pitched racing prop simply didnt have enough bite meant Wildcat pushed start its takeoff run plane covered whole airstrip part farmers field before airborne Once aloft airplane pitched violently Rohlfs barely able get back field land safely pronounced entire flight nightmare desperation designers stayed up night laying out new ribs spars workspace help gallantly provided French Moraine-Saulnier fac tory new set biplane wings com pleted fitted just four days However Wildcat Etampes 7 am next day qualify time biplane wings com pleted finished already late afternoon Time running out Still smelling fresh dope racer rolled out putting enough fuel 30-mile flight Rohlfs took off dusk Just lifted otf wheels struck hidden rut plane bounced air Rejoicing what described planes greatly improved flight characteristics' Rohlfs unaware shock broken wheel spokes rigid landing gear As turned final approach field Etampes engine quit Rohlfs prepared dead-stick landing wheels touched broken spokes collapsed rigid gear dug airplane tlipped fuselage broke half Coxs attempt bring Gordon Ben nett Trophy race Houston quite liter ally lost its wheels Fortunately pi lot no fire Rohlfs worst injury dislocated shoulder Cactus Kitten meantime never uncrated Shipped back America converted triplane raced 86 Model Aviation Left Component parts basic airframe laid out fuselage halves joined engine mounts glued place Right wing its sheeted leading edge forming strong D-spar profile fuselage tail section finished ready assembly Len ihe landing gear installed finished fuselage gear formed two 21-in lengths 3A2 wire axle formed same-diameter wire cut 12 Right photo shows split thin-walled aluminum strut fairing covering axle assembly Three inch Williams Brothers wheels installed %2-0D brass tube bearings Note protruding axle designed receive wing strut some success Construction Wildcat has three distinctive features improve flight safety contribute ease finishing exterior-mounted con trol system landing gear tied di rectly x 2/8 x 12-in engine mounts Together unique plug-in wing struts added after model fin ished Wing Make rib pattern thin metal plywood Cut ribs three sheets x x 36-in balsa stock using re mainder finish rudder Join wing spars four /16 x x 6in ply doublers Cut half-depth notches 2-in centers main spar wing ribs Cut 24-in leading trailing edge planking strips two sheets 546 x 3 x 36-in balsa Use remainder cap strips center section planking Mark 2-in spaces rear spar inside trailing edge planking Assem ble ribs spars gluing Note double ribs center section triple-laminated ribs strut tachment points Pin entire lower half trailing Continued page 188 oiIi N ----m2 5OOOuO K ix 25 I- C~ 54 Uto C 0 = ~Ja maamaa_ SF-I-LUIMlWa K at-a maCm 0 54% U i C C U 0 0 maCC nI 2I-e0200FOctober 1989 87 Close-up shot showing V-strut plugged wing Study text plan care fully fitting mounts critical Close-up photo showing details wing strut plugged axle assem bly creates strong rigid landing gear/wing support assembly thatll withstand hard use ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE model built rules should able flown pitted intermediate-level partici pants rules appear work successfully drizzle circuit could used Rac ing enthusiasts other areas country Basically rules follow AMA Slow Rat Event 312 rules Deviations AMA rules areas engine requirements fuel tank design pull-test control line specifica tion quote Northwest rules respect engine all operate suction feed engine shall plain-bearing type single bypass intake port No variable in-flight adjusting carburetors allowed used AMA Slow Rat Race however other modification intake permissible also no restriction regarding engine rework ex cept major components shall produced original manufacturer no nonfactory material may added engine respect fuel tank cated outboard side fuselage tank may designed cowl en gine Pull test 35 lb Lines stranded construction Propellers Scale Racing have asked several Racers typical starting point Scale Race prop generally use KellyWizard III McCollum/Garner-type Scale Racing propeller After removing flashing Kelly prop will generally require thinning pitch distribution both props should follows measured Prather prop gauge Station I3 3 pitch Station II3 4 pitch Station 1114 4 pitch Station V4/2 pich Station VI43A pitch Station VII5 pitch Station VIII54 pitch After props pitched thin upper sur face blade tips around 025030 thick carefully balance prop using dynamic balancer general length prop will 6 however have found some engines require 63/5-in prop some blade short 6A will have try several propeller mod ifications both test stand flight plane/engine combination achieve maxi mum speeds As always solicit comments photos Texas Wildcat/Darkow Continued page 87 edge flat surface being careful keep straight Glue rear wing ribs lower half trailing edge leaving / clearance back Glue up per half trailing edge rear lower half wing ribs Remove wing building board Mark wing rib locations 2-in intervals A-in leading edge glue ribs place Rubberbands may used hold everything together After checking alignment carefully glue ribs spars Add leading edge planking complete D-tube spar wing will become quite rigid Plank cen ter section install cap strips glue shape tips Set wing aside time being drilling holes strut fittings 1uselage Cut upper lower halves shape two pieces /2 x 3 x 36-in medium-soft balsa Join center line Make cutouts wing tween engine mounts Epoxy engine mounts place Cut /16 ply nose doublers shape glue fuselage Drill landing gear mount holes through lower engine mount indicated plan Glue %2OD brass tubes holes flush fuselage sides Drill %-in holes en gine bellcrank mounts dummy ex hausts drill 12A-in holes %-in centers shown plan glue 1-in lengths A-in doweling holes Tail assembly Cut rudder stabilizer elevator shape Join elevator halves strip /6 x A-in spruce Join elevator stabilizer nylon hinges Cut out stabilizer slot glue tail assembly fuselage being care ful maintain correct alignment Mount /32 wire tail skid spruce block glue unit notch rear fu 188 Model Aviation TWO NEW FLIGHT BOXES Completely assembled finished Made uSA Both top qsatity wood COnOtruction Two large drawers unique drawer locka small boo 0 plun shipping large boo $12500 plus shipping includes met compartmentbattery/power panel compartmentadlustable fuselage Cradles Mosey back guarastee Send SI tsr apace call 14151 747-O$47 leave meseage Flights Fancy Aesmudellng P0 Boo La Honda Ca B4020 CL Racing/Ballard Continued page 184 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE CULPEPPER MODELS INC 2526 Washington DnbuqmeIA 52001 3191583-4830 selage Use favorite material cover wing may done either before after epoxying fuselage Again sure maintain correct alignment mounting wing model now ready finish sanded painted trimmed Landing gear Cut two 21-in lengths 42 wire Center wire pieces brass tube fuselage mounts bend down hand until parallel flush fuselage sides Bend back out until positioned approximately 45 fuselage Measure 6 fuselage bend wire back under fuselage right angles should have two triangles swinging mounts tips wires just touching under fuselage Cut 12-in piece Y32 wire axle Center between gear legs bind solder securely finished look split 8/2-in piece streamlined thinwalled aluminum strut material epoxy axle section Cut two 1-in lengths %2 brass tubing slide axle wheel bear ings Carefully mount 3-in Williams Broth ers Golden Age wheels About 1 wire should remain axle wing strut tachment Bend back up until points directly wing strut plug points Wing struts must custom fitted distance between axle ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics like selectIng radio radio control works learning fly instructor earning instructor learn basic maneuvers like landing Other chapters expiain cii about ARFa field equipment operating engines assembling airpiane easy learning control installations much Cat Number BOKOO9$1295 GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional Installations topics shown much Cat Number BOKOl 0$1295 HARRY B MIGLEY & SONS INC P 0 sox 532 GLENWOOD ILL 60425 October 1989 189 Kaimbach Publishing Co 1027 N 7th St Milwaukee WI 53233 GETTING AIRBORNE VOLUME GETTING -AIRBORNE Ii a, THIRD ANNUAL Memphis Belle Classic GIANT SCALE FLY OCTOBER 14& 15 1989 SPONSORED BY THE MEMPHIS RADIO CONTROL CLUB MEMPHIS TN AMA & IMAA SANCTIONED IMAA RULES WILL BE OBSERVED IN... FOR FURTHER INFORMATION CALL SILL REalTY EVENINGS 901-7545563 DAYTIME 951-7557 ISO MANLY WILLIAMS CO EVENINGS 901-389-1044 DAYTIME 90 IYR 12330 plug-in points wing Cut Y-struts /8-in ply leaving little long trimming fit Notch shown plan glue l-in-long %2 brass tubes place Glue /16 ply facings struts trim fit Note both right left bevel attachment points Bend four L-shaped attachment fittings Y32 wire struts plugged axle fit four wire pieces Y-ends mark exact attachment points triple-laminated wing ribs mounting points should approximately 3 apart front point 2 leading edge Drill strut mounting holes glue %2 brass tubes Finish sand paint plug struts Control system Make bellcrank mount hard aluminum shown plan Bolt nylon bellcrank pushrod lead-out wires attached fuselage Use adjustable threaded clevis fasten pushrod elevator control horn run lead-out wires through line guide strut form loops attach control lines Engine/muffler/fuel system used new 1954/55 vintage 35 Fox Since engine lacks muffler mounts clamped cutdown Du-Bro Muff-l-Aire Using 10 x 6 prop Fox provides plenty power muffler eliminates some noise although much would like Clamp 4-oz pressurized constant-flow fuel tank fuselage indicated plan youre ready go Flying Before first takeoff sure flying surfaces warp-free properly aligned Balance model center-or gravity indicated plan proto type accomplished securing about oz lead top lower engine mount mounting bolts Youll find Wildcat smooth nimble flier graceful Stunter model has no bad hab its speak ofunless course hap pen rediscover what Roland Rohlfs learned about consequences rigid landing gear Rubber & Eng Power Free Flight DisplayLAThES Control Line Electric Powerl4ILLS METALS BOOKS R/C Airplanes new illustrated 32 pageCOMPLETE CATALOG $200 tabloid sIze catalog IUS & Canada $100 Foreign $3001000 000 nn Valley Hobby Center0- 2100 M Onina Road 837-A W Main St Lanedale PA 19446 Pot-O-GoId/Neitzke Continued page 89 show daring As aircraft worked its way stadium landing brisk wind came up about four feet alti tude reached center field Buccaneers tired old four-stroke engine suddenly stopped crowd gasped cheered Buccaneer simply did vertical touchdown no roll-out ex cited onlookers thought touchdown planned maneuver course other pilots field knew better Anyone whos ever doubted luck Irish would have admit old chestnut just might have kernel truth RC Aircraft Static awards began first place Chris Langton Mishawaka IN Bell Jet Ranger Chris mem ber local Michiana RC Choppers Club Sport class Al Beek Grand Rapids MI came out first version Aeromaster superb Corsair created Phil Von Ville Delaware OH took first place Military Scale Phil spent three half years building top laurels Civilian Scale went show manager Jack Allinger Cap 21 Giant Scale Best Show very realistic P-38 Putt Putt Maru scratch-built Richard Waugh Portage IN received honors Finishing second third Civilian Scale pair highly unusual models mother-and-daughter team built quarterscale sister ships famous Bumble Bee Sky Baby Kathy Tina Mahar hail Osceola IN AMA notably present Pot-O Gold show again year Jim Sears 190 Model Aviation VEND MOUNTS THE VIBRATION KILLER Fall lual p1001 Ihraa 000 ISOlaliOn 101 25 120 0001000 Fits onualin 111011 819116It-at mounla Typical v511100 ISAuCtIOn 0170% Mao 95% ConASI8 01 n10011s Ia 1011001101018 Sbound wash, lublilo ISIluClIaflS.00 Sand 9129501100k, fllOflaO Old10110 pan Ia GSA PROGIJOYN PG SOS 36025 SARASOYA FL S42S 8133774252 FL fldanlS add 7208010 Ida IRPORMAYION 8000 &ASE