COME ONmake day makes day hear love get something mail other bills advertisements will make effort answer questions accompanied SASE postcard will often Anyway months column happy result some recent mail first confession photos September 89 column identified model wrong CJ Gordons plane Modeleraft Black Bullet Earl Stahl design Well guess thats nks Ed Morbitzer Marion Lee now have Testors Super Endurance Glider plans will make copy anyone wants Hand-Launched Glider el igible SAM Society Antique Modelers Ed contests its vintage circa 1947 us nostalgic about first model ever thermaled out sight Send buck cash stamps SASE 50C will send copy can also copy adjustment instructions Carl Gold berg Zipper Sailplane kits same price am still looking plan Ray Mathews Fugan HLG like carve propellers Rubber models prefer mold Ed Wickland can sup ply beautiful hardwood forms sam ple sent impressive Write him 3412 Tucson Ave Pensacola FL 32506 enclos ing SASE information got nice letter Mark Sexton go photo 020 replica Comet Mercury says scaled original desired wing area wingspan mentor Phil Hainer Sr Dave Benepes plans also done way see may 89 column model successful may kit fered soon used %2-sq longerons / sheet ribs finished tissue nitrate dope K&B epoxy sprayed fuselage Keith Dentel Hurst Bowers trying get flies 114 grams about 3 oz compIete set five Jimmy Allen designs light system weights No wonder flies built AMA museum So far have Sil well Youve got good mentor Mark Continued page 190 December 1989 77 Free Flight Old-Timers Bill Baker 1902 Peter Pan Norman OK 73072 Mik MIKKelson seems quite pleased Burd Korda earlier version familiar Korda Wakefield drew notorious Earl Stahl P47 plan Photo Russ Johnson Bones Hainer/Sexton 020 Replica Mercury column Careful atten tion weight evident sliced false ribs light structure aft CG avoids need nose weight balsa wheels smaller model weight affects its performance Joe Macays version Al Casanos 1941 Wakefield Joe flew England 50th niversary Wakefield competition 1987 Lanzos 1940 Nationals Stick Winner didnt name built David Rosenburg U EEEEEEEEEEmEEEE U EEEEUEEEUEUN GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent U residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * U U U N U U U U N I THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure UNitromethane get full measure youve paid based honest percentage-of-volume Imethod percentage weight SIG fuels contam 50-50 blend Bakers purest AA castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge UyourselfPrcessbIed eh gwthoot flOtiOO See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 EEEEEEEEEm u mm mm mm FF Old-Timers/Baker Continued page 77 ver Streak Thunderbolt need some build Bluebird Skyraider Yellow Jacket Jimmy Allen models kits distrib uted Skelly Oil Co service stations 1932-37 era promoted radio ad venture serial called Jimmy Allen anybody interested helping out project contact Keith 3361 Tallwood Terr Falls Church VA 22041 Ken Sykoras Oldtimer Model Supply catalog $2 lists six designs Jimmy Allen Squad ron guess Keith forgot tell about Blue Flash sounds like speedy Anyway can get catalog order plans OTMS PO Box 7334 Van Nuys CA 91409 E U U U U I I U U U I U I U U U U Martin Crowder Fresno Model Airplane Co has raise prices tad continues make quality kits Old-Timer era Rubber models originally kitted variety compa nies Very popular 30- 50-in wing span versions Miss Worlds Fair 45in-span American sorta realis tic look somewhat like full-scale air planes come folding propeller kit time read should have 40in Super Snooper looks could have some competition potential 30-in Swoose vintage-style P-30 also has group smaller models look like great vacant-lot/schoolyard fliers Get data price SASE Marion says people order kit after see immediately order couple speaks well quality value also dis tributes 32-in Zipper Jr suitable rubber Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL GALLON $1075 $1275 $1475 $1675 $2195 $2695 FUEL $1425 $1625 PflJT ifrot1I 5% Nitromthane $6$ $525 10% Nitroe~ $ 15j I15% NitromthanJ %43Qi 25% Nltrortt -t * 15 9$ 35% Nitromefhane $5 95$9 25 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane 020 Gas CO2 plane originally de signed Atom 09 Give Marion some ders would cottage indus tries couple pieces correspondence made realize could some people did understand column center-ofgravity location July 89 issue cut CG out plan carefully glue onand models still wont fly understand CG position angle wing rel ative horizontal stabilizer must set trial error change CG re quires retrimming angular difference usu ally shimming up leading trailing edge stabilizer As CG moved aft performance increases general rule stability decreases whole point article locating ideal compromise Leon Shulman says Skyscraper design has called TAMBE Tambe error years sent sketches Frank Zaic 1938 Yearbook asked model club belonged given plug Airplane Model Builders Exchange Some Skyscraper name deleted itials club used says shortly afterward club disbanded new club formed contest suggestions new clubs name won Leons suggestion Skyscrapers says FF rules changed over years Skyscraper design got heavier used powerful engines still remained com petitive saw 1988 SAM Champs flown Clarence Myerscough memory servesand pretty model very compet itive SAM 30-second Antique event Lets have something besides Clippers Powerhous es have using Coverites Micafllm some years now Rubber model fuselages prefer ence silk tissue because tough light does soak up rubber lube Rubber lube sucks water right out air humid days get soggy baggy covering youre using tra ditional covering materials hate No prob lem Micafllm still prefer tissue ni trate dope flying surfaces mainly ease putting tissue main problem have found using Mi caftlm has adhesive suggested adher ing structure have found ll satisfactory solution may thin white glue brushing consistency paint onto structure film will touch let dry maybe using two coats iron film turns out scheme works applying silk tooespecially sticking dry silk undercambered airfoils according Walter Rozelles article last final issue Okie Free Flight Flyer Newsletter publishing pays worse writing magazine columns Back covering stuff using white glue use nothing else apply tissue apply tis sue dry glue still wet works super better quality tissues ex pensive imported kind has nice long fibers has some wet strength Some tissue especially domestic stuff has very short fibers no wet strength no really definite grain direction will happier sticking stuff ni trate dope will happier yet save use wrapping presents have nice letter David Rosenburg 190 Model Aviation ale U I U I I U U I U I High Speed Airtronics MA-3 electronic speed controller specially designed electric powered aircraft Solid state componentry design ensures instant throttle control response improved RIC flight performance An efficient Proportional Electronic Throffle Control enhances MA-3s supercompad size weight eliminating additional battery servo switch Because operates sep arately f mm receiver MA-3 has greater flexibility integrated-type units can used variety aircraft MA-3 features Power MOS FET Amplifier Transistors low voltage loss convenient Battery ltage Regulator An Automatic Cut Off system reduces voltage elec tric motor whenever NiCd voltage decreases preset levels An advanced Heat Protected Amplifier interrupts current flow motor protect circuit components overheating 96330 MA-3 Specifications Power Supply 4 Cell 48 7 Cell 84 Volt NiCd pack Voltage Loss 0006 VoltslAmp PET Current Ratings Continuous Maximum Current 148 Amps Instantaneous Maximum Carrent580 Amps Dimensions 42 n 116 x 067 Weight 063 ox less switch connectors Continuous Current Rating 23 Amps cooling Intended Use Electric Powered Aircraft Adjustment Type Off-Position Trimmer Motor Size 280 540 Class Ferrite Motors Compatible Airtronics AM FM systems MA-3 speed controller accom modates 280 540 size ferrite electric motors utilizing 4-7 cell battery packs Get high speed flight performance Airtronics MA-3 electronic speed controller he Standard xjAIRTRONIC3 INC 11 Autry Irvune CA 92718714 830-8769 mote information about Airtmnics quality products please call write address above *Not compatible PCM Receivers address Ive lostDavid want send check using photo column please send address hap py because some advice gave him about Lan zo 1940 Nationals Stick Winner helped him model flies well won first place big Ca nadian contest last year has become convert Micafllm fuselage covering too Anyway told him put CG about 63% chord widen fuselage needed al low use winding tube lengthen longe rons rear go trailing edge rudder stab instead ending midstab use 14 16 strands A-in rubber 34 36 long much larger rope rub ber Lanzo suggests plans 32 strands 3/ rubber 44 long last item may important since lowers models weight makes plane flyable because CG isnt always changing depending unwound rubber decides rest change longerons allows sta ble mount stabilizer easier installation dethermalizer system Further changes move bottom wing spar aft bit under top spar located approxi mately 30% chord position allows add balsa web between two spars mak ing I-beam out Use spruce two spars takes worry out flying wind Fly thing right/left right turns under power left turns glideEd using left rudder glide turn lots down- right-thrust shim nose block flight trimming next time Have nice transition today Appendix Publishing history Air Trails magazine research AMA library 6/15/89 RB McMullen Bill Barnes Air Adventurer published Street Smith date volume number available through least volume 4 number August 1935first copy available AMA li brary digest-sized pulp magazine No other copies digest-sized magazine AMA library known what volume/number last size Bill Barnes Air Trails volume S number 1 October 1935 published Street Smith Format changed standard 8/2 x II Air Trails volume 7 number 5February 1937 still Street Smith Large Lufe-size mat adopted volume 13 number 2 Novem ber 1939 Down-sized traditional format vol ume 29 number 1 October 1947 Last issue title volume 41 number 6 March 1954 Air Trails Hobbies Young Men new title commencing volume 42 number IApril 1954 Young Men new title commencing volume 45 number 2November 1955 American Modeler new title commencing volume 47 number 3December 1956 Last sue published Street Smith no volume number January 1962 Same title remained publisher Conde Nast beginning vol ume 57 number 5 February 1962 Changed bimonthly publication volume 60 number 1 January/February 1963 Conde Nast continued publisher through volume 63 number 3 May/ June 1966 Potomac Aviation Publications came publisher volume 63 number 4 July/ August 1966 Reverted monthly publication volume 64 number 1 January 1967 American Aircraft Modeler new title begin ning volume 66 number 1 January 1968 Publication ceased volume 75 number 3 March 1975 publisher went out busi ness AerOlympics/Worth Continued page 88 through team manager meetings various evening social events mini-trade show big banquet US Navy officials Fentress site 1988 Nationals also did super job accommodating airfield activity compromising basic mission providing practice landings jet takeoffs nearby Oceana Naval Air Sta tion Full-scale flight operations sched uled during early morning late night hours AerOlympics could oper ate interference about 9 am 7 pm order use Fentress site AMA make number accommoda tions well worked out follow restrictions tents traffic could go conduct field inspection cleanup evening make sure nothing left runways taxiways might end up ajet engine take vehicle movement parking tightly controlled Despite Fentress terrific site combined world championships Physical separation control RC fre quencies enabled Helicopters Pylon Rac ers Aerobatics operate mi nor compromises pretty site December 1989 191
Edition: Model Aviation - 1989/12
Page Numbers: 77, 190, 191
COME ONmake day makes day hear love get something mail other bills advertisements will make effort answer questions accompanied SASE postcard will often Anyway months column happy result some recent mail first confession photos September 89 column identified model wrong CJ Gordons plane Modeleraft Black Bullet Earl Stahl design Well guess thats nks Ed Morbitzer Marion Lee now have Testors Super Endurance Glider plans will make copy anyone wants Hand-Launched Glider el igible SAM Society Antique Modelers Ed contests its vintage circa 1947 us nostalgic about first model ever thermaled out sight Send buck cash stamps SASE 50C will send copy can also copy adjustment instructions Carl Gold berg Zipper Sailplane kits same price am still looking plan Ray Mathews Fugan HLG like carve propellers Rubber models prefer mold Ed Wickland can sup ply beautiful hardwood forms sam ple sent impressive Write him 3412 Tucson Ave Pensacola FL 32506 enclos ing SASE information got nice letter Mark Sexton go photo 020 replica Comet Mercury says scaled original desired wing area wingspan mentor Phil Hainer Sr Dave Benepes plans also done way see may 89 column model successful may kit fered soon used %2-sq longerons / sheet ribs finished tissue nitrate dope K&B epoxy sprayed fuselage Keith Dentel Hurst Bowers trying get flies 114 grams about 3 oz compIete set five Jimmy Allen designs light system weights No wonder flies built AMA museum So far have Sil well Youve got good mentor Mark Continued page 190 December 1989 77 Free Flight Old-Timers Bill Baker 1902 Peter Pan Norman OK 73072 Mik MIKKelson seems quite pleased Burd Korda earlier version familiar Korda Wakefield drew notorious Earl Stahl P47 plan Photo Russ Johnson Bones Hainer/Sexton 020 Replica Mercury column Careful atten tion weight evident sliced false ribs light structure aft CG avoids need nose weight balsa wheels smaller model weight affects its performance Joe Macays version Al Casanos 1941 Wakefield Joe flew England 50th niversary Wakefield competition 1987 Lanzos 1940 Nationals Stick Winner didnt name built David Rosenburg U EEEEEEEEEEmEEEE U EEEEUEEEUEUN GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent U residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * U U U N U U U U N I THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure UNitromethane get full measure youve paid based honest percentage-of-volume Imethod percentage weight SIG fuels contam 50-50 blend Bakers purest AA castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge UyourselfPrcessbIed eh gwthoot flOtiOO See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 EEEEEEEEEm u mm mm mm FF Old-Timers/Baker Continued page 77 ver Streak Thunderbolt need some build Bluebird Skyraider Yellow Jacket Jimmy Allen models kits distrib uted Skelly Oil Co service stations 1932-37 era promoted radio ad venture serial called Jimmy Allen anybody interested helping out project contact Keith 3361 Tallwood Terr Falls Church VA 22041 Ken Sykoras Oldtimer Model Supply catalog $2 lists six designs Jimmy Allen Squad ron guess Keith forgot tell about Blue Flash sounds like speedy Anyway can get catalog order plans OTMS PO Box 7334 Van Nuys CA 91409 E U U U U I I U U U I U I U U U U Martin Crowder Fresno Model Airplane Co has raise prices tad continues make quality kits Old-Timer era Rubber models originally kitted variety compa nies Very popular 30- 50-in wing span versions Miss Worlds Fair 45in-span American sorta realis tic look somewhat like full-scale air planes come folding propeller kit time read should have 40in Super Snooper looks could have some competition potential 30-in Swoose vintage-style P-30 also has group smaller models look like great vacant-lot/schoolyard fliers Get data price SASE Marion says people order kit after see immediately order couple speaks well quality value also dis tributes 32-in Zipper Jr suitable rubber Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL GALLON $1075 $1275 $1475 $1675 $2195 $2695 FUEL $1425 $1625 PflJT ifrot1I 5% Nitromthane $6$ $525 10% Nitroe~ $ 15j I15% NitromthanJ %43Qi 25% Nltrortt -t * 15 9$ 35% Nitromefhane $5 95$9 25 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane 020 Gas CO2 plane originally de signed Atom 09 Give Marion some ders would cottage indus tries couple pieces correspondence made realize could some people did understand column center-ofgravity location July 89 issue cut CG out plan carefully glue onand models still wont fly understand CG position angle wing rel ative horizontal stabilizer must set trial error change CG re quires retrimming angular difference usu ally shimming up leading trailing edge stabilizer As CG moved aft performance increases general rule stability decreases whole point article locating ideal compromise Leon Shulman says Skyscraper design has called TAMBE Tambe error years sent sketches Frank Zaic 1938 Yearbook asked model club belonged given plug Airplane Model Builders Exchange Some Skyscraper name deleted itials club used says shortly afterward club disbanded new club formed contest suggestions new clubs name won Leons suggestion Skyscrapers says FF rules changed over years Skyscraper design got heavier used powerful engines still remained com petitive saw 1988 SAM Champs flown Clarence Myerscough memory servesand pretty model very compet itive SAM 30-second Antique event Lets have something besides Clippers Powerhous es have using Coverites Micafllm some years now Rubber model fuselages prefer ence silk tissue because tough light does soak up rubber lube Rubber lube sucks water right out air humid days get soggy baggy covering youre using tra ditional covering materials hate No prob lem Micafllm still prefer tissue ni trate dope flying surfaces mainly ease putting tissue main problem have found using Mi caftlm has adhesive suggested adher ing structure have found ll satisfactory solution may thin white glue brushing consistency paint onto structure film will touch let dry maybe using two coats iron film turns out scheme works applying silk tooespecially sticking dry silk undercambered airfoils according Walter Rozelles article last final issue Okie Free Flight Flyer Newsletter publishing pays worse writing magazine columns Back covering stuff using white glue use nothing else apply tissue apply tis sue dry glue still wet works super better quality tissues ex pensive imported kind has nice long fibers has some wet strength Some tissue especially domestic stuff has very short fibers no wet strength no really definite grain direction will happier sticking stuff ni trate dope will happier yet save use wrapping presents have nice letter David Rosenburg 190 Model Aviation ale U I U I I U U I U I High Speed Airtronics MA-3 electronic speed controller specially designed electric powered aircraft Solid state componentry design ensures instant throttle control response improved RIC flight performance An efficient Proportional Electronic Throffle Control enhances MA-3s supercompad size weight eliminating additional battery servo switch Because operates sep arately f mm receiver MA-3 has greater flexibility integrated-type units can used variety aircraft MA-3 features Power MOS FET Amplifier Transistors low voltage loss convenient Battery ltage Regulator An Automatic Cut Off system reduces voltage elec tric motor whenever NiCd voltage decreases preset levels An advanced Heat Protected Amplifier interrupts current flow motor protect circuit components overheating 96330 MA-3 Specifications Power Supply 4 Cell 48 7 Cell 84 Volt NiCd pack Voltage Loss 0006 VoltslAmp PET Current Ratings Continuous Maximum Current 148 Amps Instantaneous Maximum Carrent580 Amps Dimensions 42 n 116 x 067 Weight 063 ox less switch connectors Continuous Current Rating 23 Amps cooling Intended Use Electric Powered Aircraft Adjustment Type Off-Position Trimmer Motor Size 280 540 Class Ferrite Motors Compatible Airtronics AM FM systems MA-3 speed controller accom modates 280 540 size ferrite electric motors utilizing 4-7 cell battery packs Get high speed flight performance Airtronics MA-3 electronic speed controller he Standard xjAIRTRONIC3 INC 11 Autry Irvune CA 92718714 830-8769 mote information about Airtmnics quality products please call write address above *Not compatible PCM Receivers address Ive lostDavid want send check using photo column please send address hap py because some advice gave him about Lan zo 1940 Nationals Stick Winner helped him model flies well won first place big Ca nadian contest last year has become convert Micafllm fuselage covering too Anyway told him put CG about 63% chord widen fuselage needed al low use winding tube lengthen longe rons rear go trailing edge rudder stab instead ending midstab use 14 16 strands A-in rubber 34 36 long much larger rope rub ber Lanzo suggests plans 32 strands 3/ rubber 44 long last item may important since lowers models weight makes plane flyable because CG isnt always changing depending unwound rubber decides rest change longerons allows sta ble mount stabilizer easier installation dethermalizer system Further changes move bottom wing spar aft bit under top spar located approxi mately 30% chord position allows add balsa web between two spars mak ing I-beam out Use spruce two spars takes worry out flying wind Fly thing right/left right turns under power left turns glideEd using left rudder glide turn lots down- right-thrust shim nose block flight trimming next time Have nice transition today Appendix Publishing history Air Trails magazine research AMA library 6/15/89 RB McMullen Bill Barnes Air Adventurer published Street Smith date volume number available through least volume 4 number August 1935first copy available AMA li brary digest-sized pulp magazine No other copies digest-sized magazine AMA library known what volume/number last size Bill Barnes Air Trails volume S number 1 October 1935 published Street Smith Format changed standard 8/2 x II Air Trails volume 7 number 5February 1937 still Street Smith Large Lufe-size mat adopted volume 13 number 2 Novem ber 1939 Down-sized traditional format vol ume 29 number 1 October 1947 Last issue title volume 41 number 6 March 1954 Air Trails Hobbies Young Men new title commencing volume 42 number IApril 1954 Young Men new title commencing volume 45 number 2November 1955 American Modeler new title commencing volume 47 number 3December 1956 Last sue published Street Smith no volume number January 1962 Same title remained publisher Conde Nast beginning vol ume 57 number 5 February 1962 Changed bimonthly publication volume 60 number 1 January/February 1963 Conde Nast continued publisher through volume 63 number 3 May/ June 1966 Potomac Aviation Publications came publisher volume 63 number 4 July/ August 1966 Reverted monthly publication volume 64 number 1 January 1967 American Aircraft Modeler new title begin ning volume 66 number 1 January 1968 Publication ceased volume 75 number 3 March 1975 publisher went out busi ness AerOlympics/Worth Continued page 88 through team manager meetings various evening social events mini-trade show big banquet US Navy officials Fentress site 1988 Nationals also did super job accommodating airfield activity compromising basic mission providing practice landings jet takeoffs nearby Oceana Naval Air Sta tion Full-scale flight operations sched uled during early morning late night hours AerOlympics could oper ate interference about 9 am 7 pm order use Fentress site AMA make number accommoda tions well worked out follow restrictions tents traffic could go conduct field inspection cleanup evening make sure nothing left runways taxiways might end up ajet engine take vehicle movement parking tightly controlled Despite Fentress terrific site combined world championships Physical separation control RC fre quencies enabled Helicopters Pylon Rac ers Aerobatics operate mi nor compromises pretty site December 1989 191
Edition: Model Aviation - 1989/12
Page Numbers: 77, 190, 191
COME ONmake day makes day hear love get something mail other bills advertisements will make effort answer questions accompanied SASE postcard will often Anyway months column happy result some recent mail first confession photos September 89 column identified model wrong CJ Gordons plane Modeleraft Black Bullet Earl Stahl design Well guess thats nks Ed Morbitzer Marion Lee now have Testors Super Endurance Glider plans will make copy anyone wants Hand-Launched Glider el igible SAM Society Antique Modelers Ed contests its vintage circa 1947 us nostalgic about first model ever thermaled out sight Send buck cash stamps SASE 50C will send copy can also copy adjustment instructions Carl Gold berg Zipper Sailplane kits same price am still looking plan Ray Mathews Fugan HLG like carve propellers Rubber models prefer mold Ed Wickland can sup ply beautiful hardwood forms sam ple sent impressive Write him 3412 Tucson Ave Pensacola FL 32506 enclos ing SASE information got nice letter Mark Sexton go photo 020 replica Comet Mercury says scaled original desired wing area wingspan mentor Phil Hainer Sr Dave Benepes plans also done way see may 89 column model successful may kit fered soon used %2-sq longerons / sheet ribs finished tissue nitrate dope K&B epoxy sprayed fuselage Keith Dentel Hurst Bowers trying get flies 114 grams about 3 oz compIete set five Jimmy Allen designs light system weights No wonder flies built AMA museum So far have Sil well Youve got good mentor Mark Continued page 190 December 1989 77 Free Flight Old-Timers Bill Baker 1902 Peter Pan Norman OK 73072 Mik MIKKelson seems quite pleased Burd Korda earlier version familiar Korda Wakefield drew notorious Earl Stahl P47 plan Photo Russ Johnson Bones Hainer/Sexton 020 Replica Mercury column Careful atten tion weight evident sliced false ribs light structure aft CG avoids need nose weight balsa wheels smaller model weight affects its performance Joe Macays version Al Casanos 1941 Wakefield Joe flew England 50th niversary Wakefield competition 1987 Lanzos 1940 Nationals Stick Winner didnt name built David Rosenburg U EEEEEEEEEEmEEEE U EEEEUEEEUEUN GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent U residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * U U U N U U U U N I THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure UNitromethane get full measure youve paid based honest percentage-of-volume Imethod percentage weight SIG fuels contam 50-50 blend Bakers purest AA castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge UyourselfPrcessbIed eh gwthoot flOtiOO See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 EEEEEEEEEm u mm mm mm FF Old-Timers/Baker Continued page 77 ver Streak Thunderbolt need some build Bluebird Skyraider Yellow Jacket Jimmy Allen models kits distrib uted Skelly Oil Co service stations 1932-37 era promoted radio ad venture serial called Jimmy Allen anybody interested helping out project contact Keith 3361 Tallwood Terr Falls Church VA 22041 Ken Sykoras Oldtimer Model Supply catalog $2 lists six designs Jimmy Allen Squad ron guess Keith forgot tell about Blue Flash sounds like speedy Anyway can get catalog order plans OTMS PO Box 7334 Van Nuys CA 91409 E U U U U I I U U U I U I U U U U Martin Crowder Fresno Model Airplane Co has raise prices tad continues make quality kits Old-Timer era Rubber models originally kitted variety compa nies Very popular 30- 50-in wing span versions Miss Worlds Fair 45in-span American sorta realis tic look somewhat like full-scale air planes come folding propeller kit time read should have 40in Super Snooper looks could have some competition potential 30-in Swoose vintage-style P-30 also has group smaller models look like great vacant-lot/schoolyard fliers Get data price SASE Marion says people order kit after see immediately order couple speaks well quality value also dis tributes 32-in Zipper Jr suitable rubber Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL GALLON $1075 $1275 $1475 $1675 $2195 $2695 FUEL $1425 $1625 PflJT ifrot1I 5% Nitromthane $6$ $525 10% Nitroe~ $ 15j I15% NitromthanJ %43Qi 25% Nltrortt -t * 15 9$ 35% Nitromefhane $5 95$9 25 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane 020 Gas CO2 plane originally de signed Atom 09 Give Marion some ders would cottage indus tries couple pieces correspondence made realize could some people did understand column center-ofgravity location July 89 issue cut CG out plan carefully glue onand models still wont fly understand CG position angle wing rel ative horizontal stabilizer must set trial error change CG re quires retrimming angular difference usu ally shimming up leading trailing edge stabilizer As CG moved aft performance increases general rule stability decreases whole point article locating ideal compromise Leon Shulman says Skyscraper design has called TAMBE Tambe error years sent sketches Frank Zaic 1938 Yearbook asked model club belonged given plug Airplane Model Builders Exchange Some Skyscraper name deleted itials club used says shortly afterward club disbanded new club formed contest suggestions new clubs name won Leons suggestion Skyscrapers says FF rules changed over years Skyscraper design got heavier used powerful engines still remained com petitive saw 1988 SAM Champs flown Clarence Myerscough memory servesand pretty model very compet itive SAM 30-second Antique event Lets have something besides Clippers Powerhous es have using Coverites Micafllm some years now Rubber model fuselages prefer ence silk tissue because tough light does soak up rubber lube Rubber lube sucks water right out air humid days get soggy baggy covering youre using tra ditional covering materials hate No prob lem Micafllm still prefer tissue ni trate dope flying surfaces mainly ease putting tissue main problem have found using Mi caftlm has adhesive suggested adher ing structure have found ll satisfactory solution may thin white glue brushing consistency paint onto structure film will touch let dry maybe using two coats iron film turns out scheme works applying silk tooespecially sticking dry silk undercambered airfoils according Walter Rozelles article last final issue Okie Free Flight Flyer Newsletter publishing pays worse writing magazine columns Back covering stuff using white glue use nothing else apply tissue apply tis sue dry glue still wet works super better quality tissues ex pensive imported kind has nice long fibers has some wet strength Some tissue especially domestic stuff has very short fibers no wet strength no really definite grain direction will happier sticking stuff ni trate dope will happier yet save use wrapping presents have nice letter David Rosenburg 190 Model Aviation ale U I U I I U U I U I High Speed Airtronics MA-3 electronic speed controller specially designed electric powered aircraft Solid state componentry design ensures instant throttle control response improved RIC flight performance An efficient Proportional Electronic Throffle Control enhances MA-3s supercompad size weight eliminating additional battery servo switch Because operates sep arately f mm receiver MA-3 has greater flexibility integrated-type units can used variety aircraft MA-3 features Power MOS FET Amplifier Transistors low voltage loss convenient Battery ltage Regulator An Automatic Cut Off system reduces voltage elec tric motor whenever NiCd voltage decreases preset levels An advanced Heat Protected Amplifier interrupts current flow motor protect circuit components overheating 96330 MA-3 Specifications Power Supply 4 Cell 48 7 Cell 84 Volt NiCd pack Voltage Loss 0006 VoltslAmp PET Current Ratings Continuous Maximum Current 148 Amps Instantaneous Maximum Carrent580 Amps Dimensions 42 n 116 x 067 Weight 063 ox less switch connectors Continuous Current Rating 23 Amps cooling Intended Use Electric Powered Aircraft Adjustment Type Off-Position Trimmer Motor Size 280 540 Class Ferrite Motors Compatible Airtronics AM FM systems MA-3 speed controller accom modates 280 540 size ferrite electric motors utilizing 4-7 cell battery packs Get high speed flight performance Airtronics MA-3 electronic speed controller he Standard xjAIRTRONIC3 INC 11 Autry Irvune CA 92718714 830-8769 mote information about Airtmnics quality products please call write address above *Not compatible PCM Receivers address Ive lostDavid want send check using photo column please send address hap py because some advice gave him about Lan zo 1940 Nationals Stick Winner helped him model flies well won first place big Ca nadian contest last year has become convert Micafllm fuselage covering too Anyway told him put CG about 63% chord widen fuselage needed al low use winding tube lengthen longe rons rear go trailing edge rudder stab instead ending midstab use 14 16 strands A-in rubber 34 36 long much larger rope rub ber Lanzo suggests plans 32 strands 3/ rubber 44 long last item may important since lowers models weight makes plane flyable because CG isnt always changing depending unwound rubber decides rest change longerons allows sta ble mount stabilizer easier installation dethermalizer system Further changes move bottom wing spar aft bit under top spar located approxi mately 30% chord position allows add balsa web between two spars mak ing I-beam out Use spruce two spars takes worry out flying wind Fly thing right/left right turns under power left turns glideEd using left rudder glide turn lots down- right-thrust shim nose block flight trimming next time Have nice transition today Appendix Publishing history Air Trails magazine research AMA library 6/15/89 RB McMullen Bill Barnes Air Adventurer published Street Smith date volume number available through least volume 4 number August 1935first copy available AMA li brary digest-sized pulp magazine No other copies digest-sized magazine AMA library known what volume/number last size Bill Barnes Air Trails volume S number 1 October 1935 published Street Smith Format changed standard 8/2 x II Air Trails volume 7 number 5February 1937 still Street Smith Large Lufe-size mat adopted volume 13 number 2 Novem ber 1939 Down-sized traditional format vol ume 29 number 1 October 1947 Last issue title volume 41 number 6 March 1954 Air Trails Hobbies Young Men new title commencing volume 42 number IApril 1954 Young Men new title commencing volume 45 number 2November 1955 American Modeler new title commencing volume 47 number 3December 1956 Last sue published Street Smith no volume number January 1962 Same title remained publisher Conde Nast beginning vol ume 57 number 5 February 1962 Changed bimonthly publication volume 60 number 1 January/February 1963 Conde Nast continued publisher through volume 63 number 3 May/ June 1966 Potomac Aviation Publications came publisher volume 63 number 4 July/ August 1966 Reverted monthly publication volume 64 number 1 January 1967 American Aircraft Modeler new title begin ning volume 66 number 1 January 1968 Publication ceased volume 75 number 3 March 1975 publisher went out busi ness AerOlympics/Worth Continued page 88 through team manager meetings various evening social events mini-trade show big banquet US Navy officials Fentress site 1988 Nationals also did super job accommodating airfield activity compromising basic mission providing practice landings jet takeoffs nearby Oceana Naval Air Sta tion Full-scale flight operations sched uled during early morning late night hours AerOlympics could oper ate interference about 9 am 7 pm order use Fentress site AMA make number accommoda tions well worked out follow restrictions tents traffic could go conduct field inspection cleanup evening make sure nothing left runways taxiways might end up ajet engine take vehicle movement parking tightly controlled Despite Fentress terrific site combined world championships Physical separation control RC fre quencies enabled Helicopters Pylon Rac ers Aerobatics operate mi nor compromises pretty site December 1989 191