An A-J Test Pilot

A family portrait A-J Interceptors Starting bottom left swirling upward right 1960 Space Interceptor plastic fuselage 1950-60 404 version another 404 version 011947-50 1942-47 Army Interceptor used target practice 1939-41 prewar version est list An innovator showman model ing likes unparalleled words help de scribe late great Jim Walker privileged share small glimpse man through eyes people worked him Frank D Macy OVER THE YEARS much has writ ten rumored about late Jim Walker may wonder anything else can June 1983 81 Ulil Walker left nephew late Jim Walker Will Willingham employee Walkers Amer ican Junior Aircraft Co sometimes test pilot Interview Will fascinating said isnt already known compiling history American Junior Aircraft writing Biography Jim Walker Ive privilege interviewing peo ple knew him Included members family friends former employees asso ciates competitors everyones life so-called enemies vast amount information has never published certain much will yet written about him marvelous things about Jim Walkers American Junior models flew very well didnt really matter type would fly Some times too well Perhaps best though magical folding wing thing called A-J Interceptor today arti cles appear model mags about Jims folding wing wonder least making references thereto recent article Model Builder magazine about Interceptor Dave Thornburg included plans building version shown MB plans 404 Interceptor jet styling pro duced late Forties Fifties third production version although excellent flier wasnt necessarily best Sorry boutthat Dave think earlier models best starting first 1939 known A-i Army Interceptor was used target practice during WW II has said word Army deleted early war because Navy Marine Corps gunners loved blast Army out air what ever reason word deleted name wasnt accident A-J models flew well reasons main being Jim Walker himself insisted top quality A-J prod ucts often heard say never wanted hear boy girl shed ding tears because American Junior wouldnt fly advertising theme company Wings Young America 1940 A-I ad read follows American Juniors fly better rest because aerodynamically engi neered precision made Another reason American Juniors flew well former A-I Test Pilot Willard Willingham What follows conversation between author FM Willie Wil lingham WW about experiences Jim Walker A-I FM Willie did first meet Jim Walker WW It 1939 1 out trip parents visit uncle Illinois quite trip first thing did get bus head American Junior Aircraft meet Jim Walker time able 82 Model Aviation A-J Interceptors good fliers know breed think larger Army Interceptor versions first second production models best Note size/shape differences Willie Willingham young man working br A-J just tour months interviewed newspaper article reproduced says made 127500 flights time factory publicity shot Willie showing taxiing technique first Firebee Control LIne model special Firecracker engine Ken Hodges another A-J test pilot demonstrates wing-folding sequence amazing A-J Interceptor Above left right wing trailing edge pivoted upward vertical wing panels folded rearward over vertical fin below Kens right hand below right shows hold wing tips fin vertical catapult launching hand-held stick big rubberband came kit Shown walk talk model airplane nut belonged model airplane club back home flew American Juniors excited see came meet Jim FM What like meet Jim Walker what happened WW Meeting Jim Walker like meet ing movie star some big shot like exciting day life went front entrance receptionist took Jims office introduced him real nice took complete tour plant very impressed FM What impressed WW Oh gosh ings never seen airplanes much balsa wood life lot going on Jim gave new whippowered U-Control models after shown through plant autographed rudder still have around some place FM You said lived Illinois did move Oregon WW I moved out folks 1941 Weve since FM When did go work American Junior WW Just after war worked shipyards Portland during war weekends Id go flying Westmoreland Park times Jim would flew types models U-Control Free Flight Radio war ended out job So went see Jim said am t work FM How long did work WW About 20 years June 1983 83 FM You saw lot changes didnt youContinued page 154 interviewee Willie Willingham shows off A-J Fire-Kitten CL around 1955 Ken Hodges holds ruixer-powered A-J 744 Racer beauty early mid-Thirties has formed sheet balsa monocoque fuselage very lightweight strong Plain Plane Shirts Flightline Shirts Etc Colorful planes cloud 500/0 cottofl/500/o polyester sky blue T-shirts S725 plus 10% postage/handling ASP Spitfire A17 8-17 Fortress A24 8-24 Liberator A25 8-25 Mitchell A29 8-29 Superfort ASB SBD Dauntless ATB TBM Avenger AF4 F4F Corsair AMX/ F4F Wilcat AF6 F6F Hellcat AF7 F7F Tigercat AF8 FBF Bearcat A38 P-38 Lightning A40 P-40 Warhawk A47 P-47 Thunderbblt A51 P-51 Mustang A61 P-61 Black Widow A19 Fwl9O AA6 A6M Zero AA2 A26 Invader A26 826 Marauder A86 F-86 Sabre AP4 F-4 Phantom A15 F-IS Eagle AFF F-5 Freedom Fighter AIO BflO9 Messerschmitt Sizes S132-341 M36-381 L40-42 X146 Allow 4-6 weekS delIwly Send check money order Flightllne Shirts Etc Department MA P0 Box5l2 Pleasanton CA 94566 Send SASE brochure Name Address CityStateZip SizeDesign 4 CONTIOLINI TANKS PROFILE0COMBA 70RA T WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STAHl Custom DiIDA 11113 Ingredients detailed brochureSOC stamps/Check oni CAROLINA-TAFFINDER 8345 Delhi Road Charleston Hgts. SC 29405 803-553-7169 dummy trying bench with out wiggles squiggles choice fore decidine Worktable improvement Permanently attach aluminum ruler top workbench building board br both along near edge ruler always dont have waste time looking having fixed place carry work ruler handier might imagine Also rule being harder work surfaces protects table edge against getting banged up Rules come lengths two eight ft cost $2 $20 durable ones have nu merals graduations stamped less expensive ones have printed markings Actually might find printed markings easier read plenty durable purpose graduations start wearing off apply few coats favorite dope rule should let surface its top surface about flush top working surface fixed workbench requires taking tool work tool can chisel rabbet plane power router router makes task go lot faster bit epoxy few flat-head screws br both will keep place century two Bob Meuser 4200 rego SI Qokand CA 94619 FF Old-Timers/Haught Continued page 80 doesnt sound like much thats about 1 oz Enough savings put old Snuffy VI back near minimum weight Now little bit stronger 0 & R 23. Well models can use little extra help form less weight drag around Lets convince Martin get production Removable power units As have noticed months photos engine firewall ig nition system removable Snuffy well other Old-Timers used standard practice modelers lots plans show removable power units old days power unit attached rub berbands around wire hooks dowels pro vided shock-absorbing factor well easilyaccessible ignition components Nowadays seems like know little about trimming flying dont need shock-absorbing feature much models seen today have ignition system built hatch over battery box access old rubberband system little unsightly three four 440 screws held anchor nuts can take place keep nose sanitary worry about shock absorption could substitute nylon screws let shear under load ease servicing ignition system advantage removable power units sec ond benefit easy CG adjustment shifting coil batteries photo Playboy Senior shows track-mounted ignition system track Va-in plywood hinged firewall slips guide slot fuselage Rub berbands secure components little wood stops act locators track prevent shift ing during normal operations Removable power units require some sort connector plug timer unless mounted up forward RC Deans-type connectors work quite well good idea tape together prevent accidental disconnecting due vibration Frank Zaics latest follow column will probably recall interview Frank Zaic Although retired regular job some time now continues generate material model airplane enthusiasts latest work entitled Model Airplanes ond American Box contains wealth fascinating information Essentially reprints model airplane articles American Boy magazine 1927 1934 work provides insight early days modeling range plans includes early solid Scale models twin pushers endurance mod els Flying Scale models Enough information included build models sistance full-size plan service Airplane Model League America association days League kept abreast new developments techniques ran profiles famous modelers Remember pre-war days modeling first step career aviation Also included number interesting advera tisements everything Cracker Jacks Ford Trimotors ads indexed other articles enabling relocate quickly Articles listed year month convenience series 1916 articles William Stout included final bonus Available Model Aeronautics Publications Box 135 Northridge CA 91328 Also available AMA Sup ply & Service Section frr $8 RMcM Clarence Haught 3226 Honeysuckle Dr Co eur dAlene ID 83814 A-J Test Pilot/Macy Continued page 83 WW Oh yes Continuous changes growth 1947 alone manufactured over nine million model airplanes big year us FM What first job American Junior Willie WW cut out fuselage blocks Interceptor done band saw blocks first cut shape wedge cut balsa planks usually 4 x 6 x 54 used finest grade balsa know placed wedge cut metal jig cut fuselage shape sliced /4 thick 10 time cut stab rudder drilled wing bearing nose weight After printed went onto assembly line also made lot balsa wheels Hornet Pursuit also used some wheels earlier models too like AJ 44 FM Willie newspaper article 1946 job American Junior Test Pilot described young mans dream job WW Well good job dont know whether dream job good job got pretty old standing throwing things day long Wed have about six going time tricky trying remember what did flown took some concentration get onto FM Will describe Testing Room ot 154 Model Aviation 1 S iae detaiiCd piOfle itPi Other sapenb gianiscaie plans loll sine 9 PT19 Osiadra 0 Kind$2800 108 Fareran Monqauto Onnda$2400 80 FareCn Mosqaite 4090 FneeyOIfl01700 Send cast, cheCk moneySans sent roiledUPS POST PAiD rean Orders add 405 air marl desired Send large sase tar srOctreS 01 al Tavarcrati plans otterings U Wing Area 503 Designed IA5 Quik-Ray 5007 Designed Quickie 500 events . fast Box-Lok construction . fun fly Wingspan 50 U Engine 19-45 sq U weight 3 lbs ANDRE AIRCRAFT MODEL COMP P0 BOX 721 URBANA LL NOS6 80 M uv division Great Planes Model Manufacturing Company Sportmaster A-Ray H-Ray Available local hobby shop acility WW It long conveyor belt eep canvas sides canvas stop nd would fly models toward nd would drop conveyor nd return us always aimed enter turned right left little OK just didnt want dive M Were Al models tested ianner WW No just Interceptor others ere flown outside vI keep saying Test Pilots WW Oh yes worked 24 hours day r long time several others member Ken Hodges worked swing ift mostly dont remember some Eer names though vi Did have assemble models WW No girls assembly line Big boxes delivered assembled ready test fly first ng did fold wings let m flip open make sure mechanism rked properly wed test glide ard end canvas flew correctly nt packaging dept didnt uld adjust trim try againup ee times still didnt fly right troyed wings recycled rest fit new wings didnt have sI rejects I Did Jim personally check test dels vVW Oh bet often Hed pick m random test fly himself u never knew would this models always cking quality wanted everything U liked [Willie Jim difficult man work WW Not because understood him knew what wanted think knew him better traveled over country Nats shows con ventions er up Canada really like Canadians So see got know him very well once awhile wed get others nerves FM Can explain WW We really got along well Jim very demanding guy sometimes very pushy wanted attention 24 hours day just cant people know finally Id get mad tell him After hed OK long time just didnt realize pushy demanding wanted get things done always respected standing up him though told FM Why some people say Jim tyrant work WW Probably cause hed get mad yell something Some people never understood him get along him always wanted quality wanted employees proud enthused too some just job FM You worked Jims special projects experiments didnt WW Yes lot duds great always coming up new ideas just models different things quite few us June 1983 155 1 Aeromaster Trainermaster Minimaster Big H-Ray X-Ray QuikRay-500 Fine Quality Flying Models Catalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books o * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 worked special projects just FM What some projects worked WW Like said things worked RC ideas planes boats golf carts lawn mowers worked lot sonic-controlled models did much research University Oregon sonics cavity resonance system used flew too lot fun problems different sounds just few examples would hard list FM Willie has special priv ilege interview thank opportunity closing may ask what kind influence Jim Walker life WW He great influence opened eyes things ham radio nut know electronics phone car electric shaver impressed too got electronics learned value quality importance fun have own business today fly own private plane Last year purchased nice sailboat family spend lot time together enjoying things Jim Walker big influence life great guy good friend CL Aerobatics/Paul Continued page 84 prising fuselage-wing interference effect given reference excessive applied Stunter since Stunter has fuselage much smaller proportion wing full size conventional aircraft Going back time lets look dihedral Al Rabes Mustang Bearcat planes June 1969 American Aircraft Modeler Al wrote used approximately 2 degrees di hedral came out about 7/ 57-58 In-span Stunt wing stated article limiting dihedral 2 degrees placing wing bottom fuselage have aerodynamic equivalent straight midwing also get leadout location up around vertical center gravity So airI I Matched Performance system TOP PERFORMANCE 556 ENGINtS Airplane 4 Marine 558 FUELS558 GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B MicrtBaIIstn5 FILLtR K&B SUPtR POSY RESIN K&B SUPER POSY THINNER K&B SUPER POSY PRIMER K&B SUPER POSY PAINT 556 MIXING CUPS plane flies level both upright inverted Lpter Als Bearcat article AAM March 1970 stated used dral per panel Keep mind knowledgeable fliers regarded Als Bearcat Hawk nose Bearcat 11 all-blue best flying several semi-scale planes course lot much dihedral did use less Bearcats first Mustang However recent telephone conversation Al stated last two Mustangs blue silver has used much 1-I dral could stuff wing using wing jig did feel dihedral affected trim airplane way Another semi-scale advocate Frank MeMillan several times Nationals qualifier said over phone Martin-Baker planes uses about 1 dihedral 5 I-in wing says cannot tell appreciable difference tween inside outside tuming although has adjusted handle because slightly less abil ity turn outside inside however may due dihedral Now lets go back figure out meas ure dihedral model airplane Scott Bair says design full-size aircraft amount dihedral ordinarily given angle level wing centerline makes ground shown figure two designing building Stunter basic easily-performed measurement rise wing above some datum line dont know generally-accepted method measurement model airplane dihedral have seen several ways express popular lay wing panel flat surface measure flat surface bottom other tip However measurement influenced thickness-taper wing has nothing dihedral effect method use will define dihedral discussed later simply rise wing centerline root tip wing level ground Now know much dihedral use Stunter measure dihedral have locate leadouts correctly Ehat plane flies level According Scott An important consideration vertical location lead out guides relation vertical location center gravity instance lead-outs higher elevation vertical center gravity right wing will pulled upward line tension increases shown figures engine its associated hardware make up large portion aircraft weight Ive found vertical center gravity will usually found about below crank shaft centerline inverted engine There156 Model Aviation Get install dont take off Ken Willard RCM SERVO GARD SERVO GARO monitors voor arborne flight battery pack voltage eII radio signal received transmitter receiver malfonction detected part system SERVO GARD redoces throttle astomaticelly ample time before battery failore safely land nsodel SPECIFICATIONS Size unit installed KPS-14 servo case easy installation Just plug thg throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse Unit shipped positive pulse systems negative pulse available upon request SERVO GARD comes complete pre-wired pigtails servo connectors choice installed specify connector type order SEE YOUR DEALEa OR ORDER DIRECT DEALER INQUIRIES IN VI TED Price $3795 Postpaid Specify connector type positive negative pulse ordering ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO R F Enterprises 106 N Main St Arlington OH 45814 419 365-5360

A family portrait A-J Interceptors Starting bottom left swirling upward right 1960 Space Interceptor plastic fuselage 1950-60 404 version another 404 version 011947-50 1942-47 Army Interceptor used target practice 1939-41 prewar version est list An innovator showman model ing likes unparalleled words help de scribe late great Jim Walker privileged share small glimpse man through eyes people worked him Frank D Macy OVER THE YEARS much has writ ten rumored about late Jim Walker may wonder anything else can June 1983 81 Ulil Walker left nephew late Jim Walker Will Willingham employee Walkers Amer ican Junior Aircraft Co sometimes test pilot Interview Will fascinating said isnt already known compiling history American Junior Aircraft writing Biography Jim Walker Ive privilege interviewing peo ple knew him Included members family friends former employees asso ciates competitors everyones life so-called enemies vast amount information has never published certain much will yet written about him marvelous things about Jim Walkers American Junior models flew very well didnt really matter type would fly Some times too well Perhaps best though magical folding wing thing called A-J Interceptor today arti cles appear model mags about Jims folding wing wonder least making references thereto recent article Model Builder magazine about Interceptor Dave Thornburg included plans building version shown MB plans 404 Interceptor jet styling pro duced late Forties Fifties third production version although excellent flier wasnt necessarily best Sorry boutthat Dave think earlier models best starting first 1939 known A-i Army Interceptor was used target practice during WW II has said word Army deleted early war because Navy Marine Corps gunners loved blast Army out air what ever reason word deleted name wasnt accident A-J models flew well reasons main being Jim Walker himself insisted top quality A-J prod ucts often heard say never wanted hear boy girl shed ding tears because American Junior wouldnt fly advertising theme company Wings Young America 1940 A-I ad read follows American Juniors fly better rest because aerodynamically engi neered precision made Another reason American Juniors flew well former A-I Test Pilot Willard Willingham What follows conversation between author FM Willie Wil lingham WW about experiences Jim Walker A-I FM Willie did first meet Jim Walker WW It 1939 1 out trip parents visit uncle Illinois quite trip first thing did get bus head American Junior Aircraft meet Jim Walker time able 82 Model Aviation A-J Interceptors good fliers know breed think larger Army Interceptor versions first second production models best Note size/shape differences Willie Willingham young man working br A-J just tour months interviewed newspaper article reproduced says made 127500 flights time factory publicity shot Willie showing taxiing technique first Firebee Control LIne model special Firecracker engine Ken Hodges another A-J test pilot demonstrates wing-folding sequence amazing A-J Interceptor Above left right wing trailing edge pivoted upward vertical wing panels folded rearward over vertical fin below Kens right hand below right shows hold wing tips fin vertical catapult launching hand-held stick big rubberband came kit Shown walk talk model airplane nut belonged model airplane club back home flew American Juniors excited see came meet Jim FM What like meet Jim Walker what happened WW Meeting Jim Walker like meet ing movie star some big shot like exciting day life went front entrance receptionist took Jims office introduced him real nice took complete tour plant very impressed FM What impressed WW Oh gosh ings never seen airplanes much balsa wood life lot going on Jim gave new whippowered U-Control models after shown through plant autographed rudder still have around some place FM You said lived Illinois did move Oregon WW I moved out folks 1941 Weve since FM When did go work American Junior WW Just after war worked shipyards Portland during war weekends Id go flying Westmoreland Park times Jim would flew types models U-Control Free Flight Radio war ended out job So went see Jim said am t work FM How long did work WW About 20 years June 1983 83 FM You saw lot changes didnt youContinued page 154 interviewee Willie Willingham shows off A-J Fire-Kitten CL around 1955 Ken Hodges holds ruixer-powered A-J 744 Racer beauty early mid-Thirties has formed sheet balsa monocoque fuselage very lightweight strong Plain Plane Shirts Flightline Shirts Etc Colorful planes cloud 500/0 cottofl/500/o polyester sky blue T-shirts S725 plus 10% postage/handling ASP Spitfire A17 8-17 Fortress A24 8-24 Liberator A25 8-25 Mitchell A29 8-29 Superfort ASB SBD Dauntless ATB TBM Avenger AF4 F4F Corsair AMX/ F4F Wilcat AF6 F6F Hellcat AF7 F7F Tigercat AF8 FBF Bearcat A38 P-38 Lightning A40 P-40 Warhawk A47 P-47 Thunderbblt A51 P-51 Mustang A61 P-61 Black Widow A19 Fwl9O AA6 A6M Zero AA2 A26 Invader A26 826 Marauder A86 F-86 Sabre AP4 F-4 Phantom A15 F-IS Eagle AFF F-5 Freedom Fighter AIO BflO9 Messerschmitt Sizes S132-341 M36-381 L40-42 X146 Allow 4-6 weekS delIwly Send check money order Flightllne Shirts Etc Department MA P0 Box5l2 Pleasanton CA 94566 Send SASE brochure Name Address CityStateZip SizeDesign 4 CONTIOLINI TANKS PROFILE0COMBA 70RA T WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STAHl Custom DiIDA 11113 Ingredients detailed brochureSOC stamps/Check oni CAROLINA-TAFFINDER 8345 Delhi Road Charleston Hgts. SC 29405 803-553-7169 dummy trying bench with out wiggles squiggles choice fore decidine Worktable improvement Permanently attach aluminum ruler top workbench building board br both along near edge ruler always dont have waste time looking having fixed place carry work ruler handier might imagine Also rule being harder work surfaces protects table edge against getting banged up Rules come lengths two eight ft cost $2 $20 durable ones have nu merals graduations stamped less expensive ones have printed markings Actually might find printed markings easier read plenty durable purpose graduations start wearing off apply few coats favorite dope rule should let surface its top surface about flush top working surface fixed workbench requires taking tool work tool can chisel rabbet plane power router router makes task go lot faster bit epoxy few flat-head screws br both will keep place century two Bob Meuser 4200 rego SI Qokand CA 94619 FF Old-Timers/Haught Continued page 80 doesnt sound like much thats about 1 oz Enough savings put old Snuffy VI back near minimum weight Now little bit stronger 0 & R 23. Well models can use little extra help form less weight drag around Lets convince Martin get production Removable power units As have noticed months photos engine firewall ig nition system removable Snuffy well other Old-Timers used standard practice modelers lots plans show removable power units old days power unit attached rub berbands around wire hooks dowels pro vided shock-absorbing factor well easilyaccessible ignition components Nowadays seems like know little about trimming flying dont need shock-absorbing feature much models seen today have ignition system built hatch over battery box access old rubberband system little unsightly three four 440 screws held anchor nuts can take place keep nose sanitary worry about shock absorption could substitute nylon screws let shear under load ease servicing ignition system advantage removable power units sec ond benefit easy CG adjustment shifting coil batteries photo Playboy Senior shows track-mounted ignition system track Va-in plywood hinged firewall slips guide slot fuselage Rub berbands secure components little wood stops act locators track prevent shift ing during normal operations Removable power units require some sort connector plug timer unless mounted up forward RC Deans-type connectors work quite well good idea tape together prevent accidental disconnecting due vibration Frank Zaics latest follow column will probably recall interview Frank Zaic Although retired regular job some time now continues generate material model airplane enthusiasts latest work entitled Model Airplanes ond American Box contains wealth fascinating information Essentially reprints model airplane articles American Boy magazine 1927 1934 work provides insight early days modeling range plans includes early solid Scale models twin pushers endurance mod els Flying Scale models Enough information included build models sistance full-size plan service Airplane Model League America association days League kept abreast new developments techniques ran profiles famous modelers Remember pre-war days modeling first step career aviation Also included number interesting advera tisements everything Cracker Jacks Ford Trimotors ads indexed other articles enabling relocate quickly Articles listed year month convenience series 1916 articles William Stout included final bonus Available Model Aeronautics Publications Box 135 Northridge CA 91328 Also available AMA Sup ply & Service Section frr $8 RMcM Clarence Haught 3226 Honeysuckle Dr Co eur dAlene ID 83814 A-J Test Pilot/Macy Continued page 83 WW Oh yes Continuous changes growth 1947 alone manufactured over nine million model airplanes big year us FM What first job American Junior Willie WW cut out fuselage blocks Interceptor done band saw blocks first cut shape wedge cut balsa planks usually 4 x 6 x 54 used finest grade balsa know placed wedge cut metal jig cut fuselage shape sliced /4 thick 10 time cut stab rudder drilled wing bearing nose weight After printed went onto assembly line also made lot balsa wheels Hornet Pursuit also used some wheels earlier models too like AJ 44 FM Willie newspaper article 1946 job American Junior Test Pilot described young mans dream job WW Well good job dont know whether dream job good job got pretty old standing throwing things day long Wed have about six going time tricky trying remember what did flown took some concentration get onto FM Will describe Testing Room ot 154 Model Aviation 1 S iae detaiiCd piOfle itPi Other sapenb gianiscaie plans loll sine 9 PT19 Osiadra 0 Kind$2800 108 Fareran Monqauto Onnda$2400 80 FareCn Mosqaite 4090 FneeyOIfl01700 Send cast, cheCk moneySans sent roiledUPS POST PAiD rean Orders add 405 air marl desired Send large sase tar srOctreS 01 al Tavarcrati plans otterings U Wing Area 503 Designed IA5 Quik-Ray 5007 Designed Quickie 500 events . fast Box-Lok construction . fun fly Wingspan 50 U Engine 19-45 sq U weight 3 lbs ANDRE AIRCRAFT MODEL COMP P0 BOX 721 URBANA LL NOS6 80 M uv division Great Planes Model Manufacturing Company Sportmaster A-Ray H-Ray Available local hobby shop acility WW It long conveyor belt eep canvas sides canvas stop nd would fly models toward nd would drop conveyor nd return us always aimed enter turned right left little OK just didnt want dive M Were Al models tested ianner WW No just Interceptor others ere flown outside vI keep saying Test Pilots WW Oh yes worked 24 hours day r long time several others member Ken Hodges worked swing ift mostly dont remember some Eer names though vi Did have assemble models WW No girls assembly line Big boxes delivered assembled ready test fly first ng did fold wings let m flip open make sure mechanism rked properly wed test glide ard end canvas flew correctly nt packaging dept didnt uld adjust trim try againup ee times still didnt fly right troyed wings recycled rest fit new wings didnt have sI rejects I Did Jim personally check test dels vVW Oh bet often Hed pick m random test fly himself u never knew would this models always cking quality wanted everything U liked [Willie Jim difficult man work WW Not because understood him knew what wanted think knew him better traveled over country Nats shows con ventions er up Canada really like Canadians So see got know him very well once awhile wed get others nerves FM Can explain WW We really got along well Jim very demanding guy sometimes very pushy wanted attention 24 hours day just cant people know finally Id get mad tell him After hed OK long time just didnt realize pushy demanding wanted get things done always respected standing up him though told FM Why some people say Jim tyrant work WW Probably cause hed get mad yell something Some people never understood him get along him always wanted quality wanted employees proud enthused too some just job FM You worked Jims special projects experiments didnt WW Yes lot duds great always coming up new ideas just models different things quite few us June 1983 155 1 Aeromaster Trainermaster Minimaster Big H-Ray X-Ray QuikRay-500 Fine Quality Flying Models Catalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books o * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 worked special projects just FM What some projects worked WW Like said things worked RC ideas planes boats golf carts lawn mowers worked lot sonic-controlled models did much research University Oregon sonics cavity resonance system used flew too lot fun problems different sounds just few examples would hard list FM Willie has special priv ilege interview thank opportunity closing may ask what kind influence Jim Walker life WW He great influence opened eyes things ham radio nut know electronics phone car electric shaver impressed too got electronics learned value quality importance fun have own business today fly own private plane Last year purchased nice sailboat family spend lot time together enjoying things Jim Walker big influence life great guy good friend CL Aerobatics/Paul Continued page 84 prising fuselage-wing interference effect given reference excessive applied Stunter since Stunter has fuselage much smaller proportion wing full size conventional aircraft Going back time lets look dihedral Al Rabes Mustang Bearcat planes June 1969 American Aircraft Modeler Al wrote used approximately 2 degrees di hedral came out about 7/ 57-58 In-span Stunt wing stated article limiting dihedral 2 degrees placing wing bottom fuselage have aerodynamic equivalent straight midwing also get leadout location up around vertical center gravity So airI I Matched Performance system TOP PERFORMANCE 556 ENGINtS Airplane 4 Marine 558 FUELS558 GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B MicrtBaIIstn5 FILLtR K&B SUPtR POSY RESIN K&B SUPER POSY THINNER K&B SUPER POSY PRIMER K&B SUPER POSY PAINT 556 MIXING CUPS plane flies level both upright inverted Lpter Als Bearcat article AAM March 1970 stated used dral per panel Keep mind knowledgeable fliers regarded Als Bearcat Hawk nose Bearcat 11 all-blue best flying several semi-scale planes course lot much dihedral did use less Bearcats first Mustang However recent telephone conversation Al stated last two Mustangs blue silver has used much 1-I dral could stuff wing using wing jig did feel dihedral affected trim airplane way Another semi-scale advocate Frank MeMillan several times Nationals qualifier said over phone Martin-Baker planes uses about 1 dihedral 5 I-in wing says cannot tell appreciable difference tween inside outside tuming although has adjusted handle because slightly less abil ity turn outside inside however may due dihedral Now lets go back figure out meas ure dihedral model airplane Scott Bair says design full-size aircraft amount dihedral ordinarily given angle level wing centerline makes ground shown figure two designing building Stunter basic easily-performed measurement rise wing above some datum line dont know generally-accepted method measurement model airplane dihedral have seen several ways express popular lay wing panel flat surface measure flat surface bottom other tip However measurement influenced thickness-taper wing has nothing dihedral effect method use will define dihedral discussed later simply rise wing centerline root tip wing level ground Now know much dihedral use Stunter measure dihedral have locate leadouts correctly Ehat plane flies level According Scott An important consideration vertical location lead out guides relation vertical location center gravity instance lead-outs higher elevation vertical center gravity right wing will pulled upward line tension increases shown figures engine its associated hardware make up large portion aircraft weight Ive found vertical center gravity will usually found about below crank shaft centerline inverted engine There156 Model Aviation Get install dont take off Ken Willard RCM SERVO GARD SERVO GARO monitors voor arborne flight battery pack voltage eII radio signal received transmitter receiver malfonction detected part system SERVO GARD redoces throttle astomaticelly ample time before battery failore safely land nsodel SPECIFICATIONS Size unit installed KPS-14 servo case easy installation Just plug thg throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse Unit shipped positive pulse systems negative pulse available upon request SERVO GARD comes complete pre-wired pigtails servo connectors choice installed specify connector type order SEE YOUR DEALEa OR ORDER DIRECT DEALER INQUIRIES IN VI TED Price $3795 Postpaid Specify connector type positive negative pulse ordering ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO R F Enterprises 106 N Main St Arlington OH 45814 419 365-5360