units Aerospark decals various coils partnership formed Berkeley Mod els units marketed worldwide As have mentioned previously Bill Effinger has re lated Aerotrols RK6 1 miniature electron tubes baked oven household stove improve performance Also pre viously related Aerotrol system later made available kit form first RC equip ment writer ever saw assembled kit Gail Scheurman older boy lived down street Since transmitter case ap parently extra-cost item Gail mounted kitbuilt transmitter Velveeta cheese box thereby malting worlds first Kraft transmit ter Obviously Struck completely redesigned Bootstraps needs RC did retain same lifting stab wing FF ver sion nose lengthened rudder de sign completely changed what its worth airborne portion Aerotrol sys tem weighed considerably 8-oz dummy pilot consider weight its 45- three-volt batteries Nonetheless what essentially model force arrangement wing section moment arms mostly Free Flight igin significant change addition RC Franldy doing single-channel radio gear altering some times flight path Free Right model taking seems worthwhile quote famous re mark Chet Lanzo again successful RC flight model crashed some other would have nor controlled Bill Schmidt chose power recreated BootBOOTSTRAPS RC months feature sub ject selected illustrate Free Flight na ture early RC kits Henry Struck originally de signed published Bootstraps Arden 19powered PAA-Load subject modelers have joined us recentlywithin last 25 years sayAMA FF PAA-Load events pro posed sponsored Pan American Airlines late Forties early Fiffies object lift 8-oz dummy pilot FF model us sng limited engine run Duration recorded determine winner event As recall Dallas Sherman executive airline innovator event As originally conceived event specified en gines under 20 Cu displacement Later class added eventually replaced class size Bootstraps published June 1950 issue Flying Models magazine Berkeley Models kitted version next year A-size version never kitted knowledge examination-free radio frequencies 27255 465 MHz became available mod elers Berkeley announced Bootstraps RC kit complement its D-E Aerotrol RC equipment Contemporaries Bootstraps RC would clude Hal deBolts Livewire Lou Andrews Guillows Trixter Beam Vecos White Cloud Berkeley D-E Aerotrol system devel oped Joe Dale Bill Effinger hence D E part name Dale manufactured Aero spark ignition coils before war coils still considered some finest ever made run ignition engines During war years technology used manu facture ignitors fiamethrowers war wore down Dale developed RC receiver trans mitter escapements model use As mat ter fact some early Aerotrol production B 4S1W U DES SNED BY HENRY STRuCK R BAD 0 ONTROREEGE OR AA LOAD II~ WINGSPAN 54 INS WINO AREA 350 OSINS LOADED WEIORT35OZS EMPTY WEISRT2IOZS [DEC CSEC S SCALE IN AEChiS Bill Schmidts Bootstraps A-RC features dummy D-E Aerotrol receiver uses power ancient still good-running OK Cub 14 Bootstraps earliest RC kits really slightly modified version Henry Strucks PAA-Load Bootstraps FF model POWER.09 TOIR CO INS BERKELEY MODELS INC WEST HEMPSTEAD NY 1950 46 Model Aviation Radio Conoi Old-Timers Dr DB Mathews 909 N Maize Rd Townhouse 734 WichIta KS 67212 straps RC ancient still good-running OK 14 hang Aerotrol receiver four corners cabin elasticsas done days receiver will just dummy however modern receiver servo will hide under dummy Aerotrol unit Bills carried away authenticity project should create interest build ing early single-channel RC designs majority available plan form John Pond Spook stuff Gordon Codding Kingman AZ writes confirm suspicion Barney Snider influenced Joe Weathers Mystery Man designed Spook series Barney graduate pharsnacist pre ferred airplanes set himself up fullsized aircraft supply business depression hit switched supplying model airplane kit companies such Dennyplane went kit business himself first Scout Pacific Ace rubber-powered designs Shortly thereafter introduced Miss Tiny sev erai sizes larger going tapered wing become Gas-powered Pacific Ace Elbert Joe Weathers came along Mystery Man yes Barney told 72in Spook simplified Mystery Man Precision contest Free Flight course time flown Rosecrans-and Western model airport Gardenia CA held night could have absolutely calm air drew concentric circles ground using chalk lime made takeoff center told judges advance turns model would make tried adjust model land bulls eye two years winner flew Spook Fat tires term usually applied contour Continued page 153 SCALE WHEELS RADIO CONTROL CONTROL-UNEFREE-FLIGHT VINTAGE sizes2/z 3/ 13 1144/a hA5 17/a65/a GOLDEN AGE sizes21h 31/a 13 114 4% 1A 5 17/a6A 0 NEW BALLOON 24A 314514 3 SCALE PILOTS CYUNDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS Sand $3 fully illuskatad catalog otlw kits accessories DEPT MA PAWNEE ST SAN MARCOS CA 9 SMIflflHI ZNDWDUUZR8 7550 Ia, Gab,eI toad cadero CA 93422 466-1717 October 1988 47 did Dick Techenor get 9-ft-span Forster 99-powered Berkeley Cavalier tiny American Austin coupe back 1938/39 Simple made wing two pieces used linen hinge bottom zipper top Wing went corru gated cardboard box joined fuselage atop car Tall surfaces rode inside SMOOTH CONTOUR 234 1314 1143 1h 4h 214554 V 8475AVAILABLE AT AMERICAS475 DISTRIBUTED BY FINEST HOBBY SHOPS will check glasses UV elimination Im told plastic lenses UV coating usually perform better glass lenses regard excellent article sunglasses June issue Conde Nasts Traveler maga zine send SASE Ill mall copy closed quoting optometrist ideal palr sunglasses filters out everything low 510 nanometersin other words UVA UVB blue light RC Old-Timers/Mathews Continued page 47 some comparisons weights done Jim Alaback published San Diego Aeroneers newsletter tend add another concept fat Jim found pair Du-Bro 3-in tires weighs 66 oz palr Dave Brown Lite Flites tips scale 12 oz also noted another fact about Dave Brown wheels lighter color lighter weight charcoal grey ones noticeably lighter black ones also bit lighter Trexlersand dont go flat either Aprils mystery model George Arinstead Glas tonberry CT says leafing through Oc tober 1938 Model Airplane News chance night before April 88 issue Model Aviation arrived Coincidence coincidences model couldnt identll old magazine quote MAN information Picture No 4 shows Kenneth Petersons high-stabilizer job Kenneth lives 13512 Rutherford Detroit Michigan designed ship data given Mr Grant MAN Possibly some will recognize drawing significant change Ken raised stabilizer would Out downdraft wing model flew beautifully 1938 Detroit Nats wavering moment extremely steady flew out sight after about two min utes due extremely strong winds presume one-of project drawings discarded long ago Should presumption incorrect wouldnt delight very interesting issue collection MAN 12 issues short being complete October 1938 issue 12 George sent photocopy Airways section proves enlightening Peter son design also illustrates Casimer Leja four-cycle engine later became Feeney mentioned few years ago Additionally twin-boom tractor gull-winged model Roy Marquardt Marquardt Engineering shown Perhaps mind-boggling thing sue photo Clinton DeSoto adjusting ra dio equlpment huge high-wing design displayed same Nats text states DeSoto assistant secretary Amencan Radio Relay League ARRL us knew radio Hams Thirties very fa miliar organization George says DeSotos earlier 12-ft RC Glider presently hangs lobby ARRLs headquarters Connecticut get things perspective transmitter De Soto adjusting photo looks about size suitcase models fuselage least two feet high power plant twin Forster 198 two 99s common case So big birds something new scene As always am interested obtaining pho tos unusual Old-Timers can either black-and-white quality color prints am interested designs immediate post-WW II era cabin-type prewar designs As matter common courtesy Id appreci ate would please include SASE write expect answer No horsepower race Several SAM So ciety Antique Modelers chapters experi menting RC Old-Time Glider events SAM 26 used following rules event years annual contest 1 Any Glider model Glider first de signed prior December 1945 2 appropriate applicable SAM rules will followed respect plana construc tion modifications etc 3 Wingspan will limited 120-in planform measurement Scaling permitted No wing loading requirement 4 Three official flights target time cx acfly 20 mm cumulative flights sec ond flight time over 1200 will deducted writer has long urge get volved SAM Towline Glider events since Free Flight rules allow auto-rudder have always dissuaded Now op portunity build fly some classic de signs added benefit using winch hi-start instead running around end towline would sort neat have chase dern things over too Anyone enlarged Thermics such list going prices old engines has compiled Dave Pearce Rt 3 Box 85 Leesburg VA 22075 computerized sheet aston ished saw price range Thor October 1988 153 ELECTRICNUELT*ii& Buzz skies search RED BARON DSCs neat liffle stand-way-off scale model famous \AANI fighter take-offs aerobatics touch goes 40 span 275 sq area beauly 6 7 cells Simple quick build precut fuselage sides tail feathers combo includes DSC HYPERTHRUST 075 motor fused switch harness tamiya connector pro peller adaptor propeller kitl 30 amperes meter determine current draw motor/propeller combination Special Combo Price $4795 IAVEY675 TOWER LANE YSTEMS WEST CHESTER PA 193& 4 ORPORATION thumbing through old model maga zines recently came across following Air Trails November 1943 Allison engine has 720 parts compared 2300 Merlin Isnt mind-boggling RC Giant Scale/de Vries Continued page 49 well retracts worked bird very stable Making pass down club field run way heard sharp crack ominous sound unbalanced engine Curtiss wouldnt answer controls assumed 150 nose-down attitude nothing Bob could watch Giant P-40 powder itself Post-mortems deter mined part multibladed flight prop given way resulting major vibration rendered servos powerless offending blade parted well outboard propeller hub lest conclude glue joint failed Brian OMearas propeller problems bit different cowl Thunderbolt came adrift slipped forward prop Pieces seen leaving model turned out hunks razor-backed Jugs windshield canopy surmised sliced off propeller fragments Skillful pilot OMeara did have some control over bird wasnt totally destroyed crash sound engine made indicated least part propeller still attached drive shaft both instances however results similar pair Giant Scale models de stroyed disintegrating propellers moral check props cowlings before flight Its cheap insurance have replace 10-buck prop Its less ex pensive check replace overstressed ag ing cowling mounting pads bolts Gosma have skip next months colnnm cause annual coverage Nats See again December issue advances setting first switch close activates motorbattery circuit some on-purpose resistance series lhis fractional-ohm resistor loosely wound coil nichrome wire seen photos happens motor gets soft start because smail additional resis tance limits otherwise very large current surge Shortly after closure second microswitch closes servo motion continues effectively bypasses resistor thus applying full battery voltage motor Similarly two switches open reverse der during shutdown now resistor con nected series braking switch contacts stop-current surge comparably minimized two-switch action happens quickiy transmitters throttle stick ad vanced retarded Im sure results Join Ole nAL ~~0 IMAA 1ff "nC/ ggO Far Membership Information ---Contact Robert A. Blaney o Secretary IMAA 14 Parkview Road Long Valley NJ USA 07953 -4 154 Model Aviation L OPS 18 xi engine quarter scale Contact us free engine test results 5~sPwPIeof CoI%*eta% 9m64 9uec $75-$l0Owhich good O&RRC Electrics/Kopski Continued page 51 r
Edition: Model Aviation - 1988/10
Page Numbers: 46, 47, 153, 154
Edition: Model Aviation - 1988/10
Page Numbers: 46, 47, 153, 154
units Aerospark decals various coils partnership formed Berkeley Mod els units marketed worldwide As have mentioned previously Bill Effinger has re lated Aerotrols RK6 1 miniature electron tubes baked oven household stove improve performance Also pre viously related Aerotrol system later made available kit form first RC equip ment writer ever saw assembled kit Gail Scheurman older boy lived down street Since transmitter case ap parently extra-cost item Gail mounted kitbuilt transmitter Velveeta cheese box thereby malting worlds first Kraft transmit ter Obviously Struck completely redesigned Bootstraps needs RC did retain same lifting stab wing FF ver sion nose lengthened rudder de sign completely changed what its worth airborne portion Aerotrol sys tem weighed considerably 8-oz dummy pilot consider weight its 45- three-volt batteries Nonetheless what essentially model force arrangement wing section moment arms mostly Free Flight igin significant change addition RC Franldy doing single-channel radio gear altering some times flight path Free Right model taking seems worthwhile quote famous re mark Chet Lanzo again successful RC flight model crashed some other would have nor controlled Bill Schmidt chose power recreated BootBOOTSTRAPS RC months feature sub ject selected illustrate Free Flight na ture early RC kits Henry Struck originally de signed published Bootstraps Arden 19powered PAA-Load subject modelers have joined us recentlywithin last 25 years sayAMA FF PAA-Load events pro posed sponsored Pan American Airlines late Forties early Fiffies object lift 8-oz dummy pilot FF model us sng limited engine run Duration recorded determine winner event As recall Dallas Sherman executive airline innovator event As originally conceived event specified en gines under 20 Cu displacement Later class added eventually replaced class size Bootstraps published June 1950 issue Flying Models magazine Berkeley Models kitted version next year A-size version never kitted knowledge examination-free radio frequencies 27255 465 MHz became available mod elers Berkeley announced Bootstraps RC kit complement its D-E Aerotrol RC equipment Contemporaries Bootstraps RC would clude Hal deBolts Livewire Lou Andrews Guillows Trixter Beam Vecos White Cloud Berkeley D-E Aerotrol system devel oped Joe Dale Bill Effinger hence D E part name Dale manufactured Aero spark ignition coils before war coils still considered some finest ever made run ignition engines During war years technology used manu facture ignitors fiamethrowers war wore down Dale developed RC receiver trans mitter escapements model use As mat ter fact some early Aerotrol production B 4S1W U DES SNED BY HENRY STRuCK R BAD 0 ONTROREEGE OR AA LOAD II~ WINGSPAN 54 INS WINO AREA 350 OSINS LOADED WEIORT35OZS EMPTY WEISRT2IOZS [DEC CSEC S SCALE IN AEChiS Bill Schmidts Bootstraps A-RC features dummy D-E Aerotrol receiver uses power ancient still good-running OK Cub 14 Bootstraps earliest RC kits really slightly modified version Henry Strucks PAA-Load Bootstraps FF model POWER.09 TOIR CO INS BERKELEY MODELS INC WEST HEMPSTEAD NY 1950 46 Model Aviation Radio Conoi Old-Timers Dr DB Mathews 909 N Maize Rd Townhouse 734 WichIta KS 67212 straps RC ancient still good-running OK 14 hang Aerotrol receiver four corners cabin elasticsas done days receiver will just dummy however modern receiver servo will hide under dummy Aerotrol unit Bills carried away authenticity project should create interest build ing early single-channel RC designs majority available plan form John Pond Spook stuff Gordon Codding Kingman AZ writes confirm suspicion Barney Snider influenced Joe Weathers Mystery Man designed Spook series Barney graduate pharsnacist pre ferred airplanes set himself up fullsized aircraft supply business depression hit switched supplying model airplane kit companies such Dennyplane went kit business himself first Scout Pacific Ace rubber-powered designs Shortly thereafter introduced Miss Tiny sev erai sizes larger going tapered wing become Gas-powered Pacific Ace Elbert Joe Weathers came along Mystery Man yes Barney told 72in Spook simplified Mystery Man Precision contest Free Flight course time flown Rosecrans-and Western model airport Gardenia CA held night could have absolutely calm air drew concentric circles ground using chalk lime made takeoff center told judges advance turns model would make tried adjust model land bulls eye two years winner flew Spook Fat tires term usually applied contour Continued page 153 SCALE WHEELS RADIO CONTROL CONTROL-UNEFREE-FLIGHT VINTAGE sizes2/z 3/ 13 1144/a hA5 17/a65/a GOLDEN AGE sizes21h 31/a 13 114 4% 1A 5 17/a6A 0 NEW BALLOON 24A 314514 3 SCALE PILOTS CYUNDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS Sand $3 fully illuskatad catalog otlw kits accessories DEPT MA PAWNEE ST SAN MARCOS CA 9 SMIflflHI ZNDWDUUZR8 7550 Ia, Gab,eI toad cadero CA 93422 466-1717 October 1988 47 did Dick Techenor get 9-ft-span Forster 99-powered Berkeley Cavalier tiny American Austin coupe back 1938/39 Simple made wing two pieces used linen hinge bottom zipper top Wing went corru gated cardboard box joined fuselage atop car Tall surfaces rode inside SMOOTH CONTOUR 234 1314 1143 1h 4h 214554 V 8475AVAILABLE AT AMERICAS475 DISTRIBUTED BY FINEST HOBBY SHOPS will check glasses UV elimination Im told plastic lenses UV coating usually perform better glass lenses regard excellent article sunglasses June issue Conde Nasts Traveler maga zine send SASE Ill mall copy closed quoting optometrist ideal palr sunglasses filters out everything low 510 nanometersin other words UVA UVB blue light RC Old-Timers/Mathews Continued page 47 some comparisons weights done Jim Alaback published San Diego Aeroneers newsletter tend add another concept fat Jim found pair Du-Bro 3-in tires weighs 66 oz palr Dave Brown Lite Flites tips scale 12 oz also noted another fact about Dave Brown wheels lighter color lighter weight charcoal grey ones noticeably lighter black ones also bit lighter Trexlersand dont go flat either Aprils mystery model George Arinstead Glas tonberry CT says leafing through Oc tober 1938 Model Airplane News chance night before April 88 issue Model Aviation arrived Coincidence coincidences model couldnt identll old magazine quote MAN information Picture No 4 shows Kenneth Petersons high-stabilizer job Kenneth lives 13512 Rutherford Detroit Michigan designed ship data given Mr Grant MAN Possibly some will recognize drawing significant change Ken raised stabilizer would Out downdraft wing model flew beautifully 1938 Detroit Nats wavering moment extremely steady flew out sight after about two min utes due extremely strong winds presume one-of project drawings discarded long ago Should presumption incorrect wouldnt delight very interesting issue collection MAN 12 issues short being complete October 1938 issue 12 George sent photocopy Airways section proves enlightening Peter son design also illustrates Casimer Leja four-cycle engine later became Feeney mentioned few years ago Additionally twin-boom tractor gull-winged model Roy Marquardt Marquardt Engineering shown Perhaps mind-boggling thing sue photo Clinton DeSoto adjusting ra dio equlpment huge high-wing design displayed same Nats text states DeSoto assistant secretary Amencan Radio Relay League ARRL us knew radio Hams Thirties very fa miliar organization George says DeSotos earlier 12-ft RC Glider presently hangs lobby ARRLs headquarters Connecticut get things perspective transmitter De Soto adjusting photo looks about size suitcase models fuselage least two feet high power plant twin Forster 198 two 99s common case So big birds something new scene As always am interested obtaining pho tos unusual Old-Timers can either black-and-white quality color prints am interested designs immediate post-WW II era cabin-type prewar designs As matter common courtesy Id appreci ate would please include SASE write expect answer No horsepower race Several SAM So ciety Antique Modelers chapters experi menting RC Old-Time Glider events SAM 26 used following rules event years annual contest 1 Any Glider model Glider first de signed prior December 1945 2 appropriate applicable SAM rules will followed respect plana construc tion modifications etc 3 Wingspan will limited 120-in planform measurement Scaling permitted No wing loading requirement 4 Three official flights target time cx acfly 20 mm cumulative flights sec ond flight time over 1200 will deducted writer has long urge get volved SAM Towline Glider events since Free Flight rules allow auto-rudder have always dissuaded Now op portunity build fly some classic de signs added benefit using winch hi-start instead running around end towline would sort neat have chase dern things over too Anyone enlarged Thermics such list going prices old engines has compiled Dave Pearce Rt 3 Box 85 Leesburg VA 22075 computerized sheet aston ished saw price range Thor October 1988 153 ELECTRICNUELT*ii& Buzz skies search RED BARON DSCs neat liffle stand-way-off scale model famous \AANI fighter take-offs aerobatics touch goes 40 span 275 sq area beauly 6 7 cells Simple quick build precut fuselage sides tail feathers combo includes DSC HYPERTHRUST 075 motor fused switch harness tamiya connector pro peller adaptor propeller kitl 30 amperes meter determine current draw motor/propeller combination Special Combo Price $4795 IAVEY675 TOWER LANE YSTEMS WEST CHESTER PA 193& 4 ORPORATION thumbing through old model maga zines recently came across following Air Trails November 1943 Allison engine has 720 parts compared 2300 Merlin Isnt mind-boggling RC Giant Scale/de Vries Continued page 49 well retracts worked bird very stable Making pass down club field run way heard sharp crack ominous sound unbalanced engine Curtiss wouldnt answer controls assumed 150 nose-down attitude nothing Bob could watch Giant P-40 powder itself Post-mortems deter mined part multibladed flight prop given way resulting major vibration rendered servos powerless offending blade parted well outboard propeller hub lest conclude glue joint failed Brian OMearas propeller problems bit different cowl Thunderbolt came adrift slipped forward prop Pieces seen leaving model turned out hunks razor-backed Jugs windshield canopy surmised sliced off propeller fragments Skillful pilot OMeara did have some control over bird wasnt totally destroyed crash sound engine made indicated least part propeller still attached drive shaft both instances however results similar pair Giant Scale models de stroyed disintegrating propellers moral check props cowlings before flight Its cheap insurance have replace 10-buck prop Its less ex pensive check replace overstressed ag ing cowling mounting pads bolts Gosma have skip next months colnnm cause annual coverage Nats See again December issue advances setting first switch close activates motorbattery circuit some on-purpose resistance series lhis fractional-ohm resistor loosely wound coil nichrome wire seen photos happens motor gets soft start because smail additional resis tance limits otherwise very large current surge Shortly after closure second microswitch closes servo motion continues effectively bypasses resistor thus applying full battery voltage motor Similarly two switches open reverse der during shutdown now resistor con nected series braking switch contacts stop-current surge comparably minimized two-switch action happens quickiy transmitters throttle stick ad vanced retarded Im sure results Join Ole nAL ~~0 IMAA 1ff "nC/ ggO Far Membership Information ---Contact Robert A. Blaney o Secretary IMAA 14 Parkview Road Long Valley NJ USA 07953 -4 154 Model Aviation L OPS 18 xi engine quarter scale Contact us free engine test results 5~sPwPIeof CoI%*eta% 9m64 9uec $75-$l0Owhich good O&RRC Electrics/Kopski Continued page 51 r
Edition: Model Aviation - 1988/10
Page Numbers: 46, 47, 153, 154
units Aerospark decals various coils partnership formed Berkeley Mod els units marketed worldwide As have mentioned previously Bill Effinger has re lated Aerotrols RK6 1 miniature electron tubes baked oven household stove improve performance Also pre viously related Aerotrol system later made available kit form first RC equip ment writer ever saw assembled kit Gail Scheurman older boy lived down street Since transmitter case ap parently extra-cost item Gail mounted kitbuilt transmitter Velveeta cheese box thereby malting worlds first Kraft transmit ter Obviously Struck completely redesigned Bootstraps needs RC did retain same lifting stab wing FF ver sion nose lengthened rudder de sign completely changed what its worth airborne portion Aerotrol sys tem weighed considerably 8-oz dummy pilot consider weight its 45- three-volt batteries Nonetheless what essentially model force arrangement wing section moment arms mostly Free Flight igin significant change addition RC Franldy doing single-channel radio gear altering some times flight path Free Right model taking seems worthwhile quote famous re mark Chet Lanzo again successful RC flight model crashed some other would have nor controlled Bill Schmidt chose power recreated BootBOOTSTRAPS RC months feature sub ject selected illustrate Free Flight na ture early RC kits Henry Struck originally de signed published Bootstraps Arden 19powered PAA-Load subject modelers have joined us recentlywithin last 25 years sayAMA FF PAA-Load events pro posed sponsored Pan American Airlines late Forties early Fiffies object lift 8-oz dummy pilot FF model us sng limited engine run Duration recorded determine winner event As recall Dallas Sherman executive airline innovator event As originally conceived event specified en gines under 20 Cu displacement Later class added eventually replaced class size Bootstraps published June 1950 issue Flying Models magazine Berkeley Models kitted version next year A-size version never kitted knowledge examination-free radio frequencies 27255 465 MHz became available mod elers Berkeley announced Bootstraps RC kit complement its D-E Aerotrol RC equipment Contemporaries Bootstraps RC would clude Hal deBolts Livewire Lou Andrews Guillows Trixter Beam Vecos White Cloud Berkeley D-E Aerotrol system devel oped Joe Dale Bill Effinger hence D E part name Dale manufactured Aero spark ignition coils before war coils still considered some finest ever made run ignition engines During war years technology used manu facture ignitors fiamethrowers war wore down Dale developed RC receiver trans mitter escapements model use As mat ter fact some early Aerotrol production B 4S1W U DES SNED BY HENRY STRuCK R BAD 0 ONTROREEGE OR AA LOAD II~ WINGSPAN 54 INS WINO AREA 350 OSINS LOADED WEIORT35OZS EMPTY WEISRT2IOZS [DEC CSEC S SCALE IN AEChiS Bill Schmidts Bootstraps A-RC features dummy D-E Aerotrol receiver uses power ancient still good-running OK Cub 14 Bootstraps earliest RC kits really slightly modified version Henry Strucks PAA-Load Bootstraps FF model POWER.09 TOIR CO INS BERKELEY MODELS INC WEST HEMPSTEAD NY 1950 46 Model Aviation Radio Conoi Old-Timers Dr DB Mathews 909 N Maize Rd Townhouse 734 WichIta KS 67212 straps RC ancient still good-running OK 14 hang Aerotrol receiver four corners cabin elasticsas done days receiver will just dummy however modern receiver servo will hide under dummy Aerotrol unit Bills carried away authenticity project should create interest build ing early single-channel RC designs majority available plan form John Pond Spook stuff Gordon Codding Kingman AZ writes confirm suspicion Barney Snider influenced Joe Weathers Mystery Man designed Spook series Barney graduate pharsnacist pre ferred airplanes set himself up fullsized aircraft supply business depression hit switched supplying model airplane kit companies such Dennyplane went kit business himself first Scout Pacific Ace rubber-powered designs Shortly thereafter introduced Miss Tiny sev erai sizes larger going tapered wing become Gas-powered Pacific Ace Elbert Joe Weathers came along Mystery Man yes Barney told 72in Spook simplified Mystery Man Precision contest Free Flight course time flown Rosecrans-and Western model airport Gardenia CA held night could have absolutely calm air drew concentric circles ground using chalk lime made takeoff center told judges advance turns model would make tried adjust model land bulls eye two years winner flew Spook Fat tires term usually applied contour Continued page 153 SCALE WHEELS RADIO CONTROL CONTROL-UNEFREE-FLIGHT VINTAGE sizes2/z 3/ 13 1144/a hA5 17/a65/a GOLDEN AGE sizes21h 31/a 13 114 4% 1A 5 17/a6A 0 NEW BALLOON 24A 314514 3 SCALE PILOTS CYUNDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS Sand $3 fully illuskatad catalog otlw kits accessories DEPT MA PAWNEE ST SAN MARCOS CA 9 SMIflflHI ZNDWDUUZR8 7550 Ia, Gab,eI toad cadero CA 93422 466-1717 October 1988 47 did Dick Techenor get 9-ft-span Forster 99-powered Berkeley Cavalier tiny American Austin coupe back 1938/39 Simple made wing two pieces used linen hinge bottom zipper top Wing went corru gated cardboard box joined fuselage atop car Tall surfaces rode inside SMOOTH CONTOUR 234 1314 1143 1h 4h 214554 V 8475AVAILABLE AT AMERICAS475 DISTRIBUTED BY FINEST HOBBY SHOPS will check glasses UV elimination Im told plastic lenses UV coating usually perform better glass lenses regard excellent article sunglasses June issue Conde Nasts Traveler maga zine send SASE Ill mall copy closed quoting optometrist ideal palr sunglasses filters out everything low 510 nanometersin other words UVA UVB blue light RC Old-Timers/Mathews Continued page 47 some comparisons weights done Jim Alaback published San Diego Aeroneers newsletter tend add another concept fat Jim found pair Du-Bro 3-in tires weighs 66 oz palr Dave Brown Lite Flites tips scale 12 oz also noted another fact about Dave Brown wheels lighter color lighter weight charcoal grey ones noticeably lighter black ones also bit lighter Trexlersand dont go flat either Aprils mystery model George Arinstead Glas tonberry CT says leafing through Oc tober 1938 Model Airplane News chance night before April 88 issue Model Aviation arrived Coincidence coincidences model couldnt identll old magazine quote MAN information Picture No 4 shows Kenneth Petersons high-stabilizer job Kenneth lives 13512 Rutherford Detroit Michigan designed ship data given Mr Grant MAN Possibly some will recognize drawing significant change Ken raised stabilizer would Out downdraft wing model flew beautifully 1938 Detroit Nats wavering moment extremely steady flew out sight after about two min utes due extremely strong winds presume one-of project drawings discarded long ago Should presumption incorrect wouldnt delight very interesting issue collection MAN 12 issues short being complete October 1938 issue 12 George sent photocopy Airways section proves enlightening Peter son design also illustrates Casimer Leja four-cycle engine later became Feeney mentioned few years ago Additionally twin-boom tractor gull-winged model Roy Marquardt Marquardt Engineering shown Perhaps mind-boggling thing sue photo Clinton DeSoto adjusting ra dio equlpment huge high-wing design displayed same Nats text states DeSoto assistant secretary Amencan Radio Relay League ARRL us knew radio Hams Thirties very fa miliar organization George says DeSotos earlier 12-ft RC Glider presently hangs lobby ARRLs headquarters Connecticut get things perspective transmitter De Soto adjusting photo looks about size suitcase models fuselage least two feet high power plant twin Forster 198 two 99s common case So big birds something new scene As always am interested obtaining pho tos unusual Old-Timers can either black-and-white quality color prints am interested designs immediate post-WW II era cabin-type prewar designs As matter common courtesy Id appreci ate would please include SASE write expect answer No horsepower race Several SAM So ciety Antique Modelers chapters experi menting RC Old-Time Glider events SAM 26 used following rules event years annual contest 1 Any Glider model Glider first de signed prior December 1945 2 appropriate applicable SAM rules will followed respect plana construc tion modifications etc 3 Wingspan will limited 120-in planform measurement Scaling permitted No wing loading requirement 4 Three official flights target time cx acfly 20 mm cumulative flights sec ond flight time over 1200 will deducted writer has long urge get volved SAM Towline Glider events since Free Flight rules allow auto-rudder have always dissuaded Now op portunity build fly some classic de signs added benefit using winch hi-start instead running around end towline would sort neat have chase dern things over too Anyone enlarged Thermics such list going prices old engines has compiled Dave Pearce Rt 3 Box 85 Leesburg VA 22075 computerized sheet aston ished saw price range Thor October 1988 153 ELECTRICNUELT*ii& Buzz skies search RED BARON DSCs neat liffle stand-way-off scale model famous \AANI fighter take-offs aerobatics touch goes 40 span 275 sq area beauly 6 7 cells Simple quick build precut fuselage sides tail feathers combo includes DSC HYPERTHRUST 075 motor fused switch harness tamiya connector pro peller adaptor propeller kitl 30 amperes meter determine current draw motor/propeller combination Special Combo Price $4795 IAVEY675 TOWER LANE YSTEMS WEST CHESTER PA 193& 4 ORPORATION thumbing through old model maga zines recently came across following Air Trails November 1943 Allison engine has 720 parts compared 2300 Merlin Isnt mind-boggling RC Giant Scale/de Vries Continued page 49 well retracts worked bird very stable Making pass down club field run way heard sharp crack ominous sound unbalanced engine Curtiss wouldnt answer controls assumed 150 nose-down attitude nothing Bob could watch Giant P-40 powder itself Post-mortems deter mined part multibladed flight prop given way resulting major vibration rendered servos powerless offending blade parted well outboard propeller hub lest conclude glue joint failed Brian OMearas propeller problems bit different cowl Thunderbolt came adrift slipped forward prop Pieces seen leaving model turned out hunks razor-backed Jugs windshield canopy surmised sliced off propeller fragments Skillful pilot OMeara did have some control over bird wasnt totally destroyed crash sound engine made indicated least part propeller still attached drive shaft both instances however results similar pair Giant Scale models de stroyed disintegrating propellers moral check props cowlings before flight Its cheap insurance have replace 10-buck prop Its less ex pensive check replace overstressed ag ing cowling mounting pads bolts Gosma have skip next months colnnm cause annual coverage Nats See again December issue advances setting first switch close activates motorbattery circuit some on-purpose resistance series lhis fractional-ohm resistor loosely wound coil nichrome wire seen photos happens motor gets soft start because smail additional resis tance limits otherwise very large current surge Shortly after closure second microswitch closes servo motion continues effectively bypasses resistor thus applying full battery voltage motor Similarly two switches open reverse der during shutdown now resistor con nected series braking switch contacts stop-current surge comparably minimized two-switch action happens quickiy transmitters throttle stick ad vanced retarded Im sure results Join Ole nAL ~~0 IMAA 1ff "nC/ ggO Far Membership Information ---Contact Robert A. Blaney o Secretary IMAA 14 Parkview Road Long Valley NJ USA 07953 -4 154 Model Aviation L OPS 18 xi engine quarter scale Contact us free engine test results 5~sPwPIeof CoI%*eta% 9m64 9uec $75-$l0Owhich good O&RRC Electrics/Kopski Continued page 51 r
Edition: Model Aviation - 1988/10
Page Numbers: 46, 47, 153, 154
units Aerospark decals various coils partnership formed Berkeley Mod els units marketed worldwide As have mentioned previously Bill Effinger has re lated Aerotrols RK6 1 miniature electron tubes baked oven household stove improve performance Also pre viously related Aerotrol system later made available kit form first RC equip ment writer ever saw assembled kit Gail Scheurman older boy lived down street Since transmitter case ap parently extra-cost item Gail mounted kitbuilt transmitter Velveeta cheese box thereby malting worlds first Kraft transmit ter Obviously Struck completely redesigned Bootstraps needs RC did retain same lifting stab wing FF ver sion nose lengthened rudder de sign completely changed what its worth airborne portion Aerotrol sys tem weighed considerably 8-oz dummy pilot consider weight its 45- three-volt batteries Nonetheless what essentially model force arrangement wing section moment arms mostly Free Flight igin significant change addition RC Franldy doing single-channel radio gear altering some times flight path Free Right model taking seems worthwhile quote famous re mark Chet Lanzo again successful RC flight model crashed some other would have nor controlled Bill Schmidt chose power recreated BootBOOTSTRAPS RC months feature sub ject selected illustrate Free Flight na ture early RC kits Henry Struck originally de signed published Bootstraps Arden 19powered PAA-Load subject modelers have joined us recentlywithin last 25 years sayAMA FF PAA-Load events pro posed sponsored Pan American Airlines late Forties early Fiffies object lift 8-oz dummy pilot FF model us sng limited engine run Duration recorded determine winner event As recall Dallas Sherman executive airline innovator event As originally conceived event specified en gines under 20 Cu displacement Later class added eventually replaced class size Bootstraps published June 1950 issue Flying Models magazine Berkeley Models kitted version next year A-size version never kitted knowledge examination-free radio frequencies 27255 465 MHz became available mod elers Berkeley announced Bootstraps RC kit complement its D-E Aerotrol RC equipment Contemporaries Bootstraps RC would clude Hal deBolts Livewire Lou Andrews Guillows Trixter Beam Vecos White Cloud Berkeley D-E Aerotrol system devel oped Joe Dale Bill Effinger hence D E part name Dale manufactured Aero spark ignition coils before war coils still considered some finest ever made run ignition engines During war years technology used manu facture ignitors fiamethrowers war wore down Dale developed RC receiver trans mitter escapements model use As mat ter fact some early Aerotrol production B 4S1W U DES SNED BY HENRY STRuCK R BAD 0 ONTROREEGE OR AA LOAD II~ WINGSPAN 54 INS WINO AREA 350 OSINS LOADED WEIORT35OZS EMPTY WEISRT2IOZS [DEC CSEC S SCALE IN AEChiS Bill Schmidts Bootstraps A-RC features dummy D-E Aerotrol receiver uses power ancient still good-running OK Cub 14 Bootstraps earliest RC kits really slightly modified version Henry Strucks PAA-Load Bootstraps FF model POWER.09 TOIR CO INS BERKELEY MODELS INC WEST HEMPSTEAD NY 1950 46 Model Aviation Radio Conoi Old-Timers Dr DB Mathews 909 N Maize Rd Townhouse 734 WichIta KS 67212 straps RC ancient still good-running OK 14 hang Aerotrol receiver four corners cabin elasticsas done days receiver will just dummy however modern receiver servo will hide under dummy Aerotrol unit Bills carried away authenticity project should create interest build ing early single-channel RC designs majority available plan form John Pond Spook stuff Gordon Codding Kingman AZ writes confirm suspicion Barney Snider influenced Joe Weathers Mystery Man designed Spook series Barney graduate pharsnacist pre ferred airplanes set himself up fullsized aircraft supply business depression hit switched supplying model airplane kit companies such Dennyplane went kit business himself first Scout Pacific Ace rubber-powered designs Shortly thereafter introduced Miss Tiny sev erai sizes larger going tapered wing become Gas-powered Pacific Ace Elbert Joe Weathers came along Mystery Man yes Barney told 72in Spook simplified Mystery Man Precision contest Free Flight course time flown Rosecrans-and Western model airport Gardenia CA held night could have absolutely calm air drew concentric circles ground using chalk lime made takeoff center told judges advance turns model would make tried adjust model land bulls eye two years winner flew Spook Fat tires term usually applied contour Continued page 153 SCALE WHEELS RADIO CONTROL CONTROL-UNEFREE-FLIGHT VINTAGE sizes2/z 3/ 13 1144/a hA5 17/a65/a GOLDEN AGE sizes21h 31/a 13 114 4% 1A 5 17/a6A 0 NEW BALLOON 24A 314514 3 SCALE PILOTS CYUNDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS Sand $3 fully illuskatad catalog otlw kits accessories DEPT MA PAWNEE ST SAN MARCOS CA 9 SMIflflHI ZNDWDUUZR8 7550 Ia, Gab,eI toad cadero CA 93422 466-1717 October 1988 47 did Dick Techenor get 9-ft-span Forster 99-powered Berkeley Cavalier tiny American Austin coupe back 1938/39 Simple made wing two pieces used linen hinge bottom zipper top Wing went corru gated cardboard box joined fuselage atop car Tall surfaces rode inside SMOOTH CONTOUR 234 1314 1143 1h 4h 214554 V 8475AVAILABLE AT AMERICAS475 DISTRIBUTED BY FINEST HOBBY SHOPS will check glasses UV elimination Im told plastic lenses UV coating usually perform better glass lenses regard excellent article sunglasses June issue Conde Nasts Traveler maga zine send SASE Ill mall copy closed quoting optometrist ideal palr sunglasses filters out everything low 510 nanometersin other words UVA UVB blue light RC Old-Timers/Mathews Continued page 47 some comparisons weights done Jim Alaback published San Diego Aeroneers newsletter tend add another concept fat Jim found pair Du-Bro 3-in tires weighs 66 oz palr Dave Brown Lite Flites tips scale 12 oz also noted another fact about Dave Brown wheels lighter color lighter weight charcoal grey ones noticeably lighter black ones also bit lighter Trexlersand dont go flat either Aprils mystery model George Arinstead Glas tonberry CT says leafing through Oc tober 1938 Model Airplane News chance night before April 88 issue Model Aviation arrived Coincidence coincidences model couldnt identll old magazine quote MAN information Picture No 4 shows Kenneth Petersons high-stabilizer job Kenneth lives 13512 Rutherford Detroit Michigan designed ship data given Mr Grant MAN Possibly some will recognize drawing significant change Ken raised stabilizer would Out downdraft wing model flew beautifully 1938 Detroit Nats wavering moment extremely steady flew out sight after about two min utes due extremely strong winds presume one-of project drawings discarded long ago Should presumption incorrect wouldnt delight very interesting issue collection MAN 12 issues short being complete October 1938 issue 12 George sent photocopy Airways section proves enlightening Peter son design also illustrates Casimer Leja four-cycle engine later became Feeney mentioned few years ago Additionally twin-boom tractor gull-winged model Roy Marquardt Marquardt Engineering shown Perhaps mind-boggling thing sue photo Clinton DeSoto adjusting ra dio equlpment huge high-wing design displayed same Nats text states DeSoto assistant secretary Amencan Radio Relay League ARRL us knew radio Hams Thirties very fa miliar organization George says DeSotos earlier 12-ft RC Glider presently hangs lobby ARRLs headquarters Connecticut get things perspective transmitter De Soto adjusting photo looks about size suitcase models fuselage least two feet high power plant twin Forster 198 two 99s common case So big birds something new scene As always am interested obtaining pho tos unusual Old-Timers can either black-and-white quality color prints am interested designs immediate post-WW II era cabin-type prewar designs As matter common courtesy Id appreci ate would please include SASE write expect answer No horsepower race Several SAM So ciety Antique Modelers chapters experi menting RC Old-Time Glider events SAM 26 used following rules event years annual contest 1 Any Glider model Glider first de signed prior December 1945 2 appropriate applicable SAM rules will followed respect plana construc tion modifications etc 3 Wingspan will limited 120-in planform measurement Scaling permitted No wing loading requirement 4 Three official flights target time cx acfly 20 mm cumulative flights sec ond flight time over 1200 will deducted writer has long urge get volved SAM Towline Glider events since Free Flight rules allow auto-rudder have always dissuaded Now op portunity build fly some classic de signs added benefit using winch hi-start instead running around end towline would sort neat have chase dern things over too Anyone enlarged Thermics such list going prices old engines has compiled Dave Pearce Rt 3 Box 85 Leesburg VA 22075 computerized sheet aston ished saw price range Thor October 1988 153 ELECTRICNUELT*ii& Buzz skies search RED BARON DSCs neat liffle stand-way-off scale model famous \AANI fighter take-offs aerobatics touch goes 40 span 275 sq area beauly 6 7 cells Simple quick build precut fuselage sides tail feathers combo includes DSC HYPERTHRUST 075 motor fused switch harness tamiya connector pro peller adaptor propeller kitl 30 amperes meter determine current draw motor/propeller combination Special Combo Price $4795 IAVEY675 TOWER LANE YSTEMS WEST CHESTER PA 193& 4 ORPORATION thumbing through old model maga zines recently came across following Air Trails November 1943 Allison engine has 720 parts compared 2300 Merlin Isnt mind-boggling RC Giant Scale/de Vries Continued page 49 well retracts worked bird very stable Making pass down club field run way heard sharp crack ominous sound unbalanced engine Curtiss wouldnt answer controls assumed 150 nose-down attitude nothing Bob could watch Giant P-40 powder itself Post-mortems deter mined part multibladed flight prop given way resulting major vibration rendered servos powerless offending blade parted well outboard propeller hub lest conclude glue joint failed Brian OMearas propeller problems bit different cowl Thunderbolt came adrift slipped forward prop Pieces seen leaving model turned out hunks razor-backed Jugs windshield canopy surmised sliced off propeller fragments Skillful pilot OMeara did have some control over bird wasnt totally destroyed crash sound engine made indicated least part propeller still attached drive shaft both instances however results similar pair Giant Scale models de stroyed disintegrating propellers moral check props cowlings before flight Its cheap insurance have replace 10-buck prop Its less ex pensive check replace overstressed ag ing cowling mounting pads bolts Gosma have skip next months colnnm cause annual coverage Nats See again December issue advances setting first switch close activates motorbattery circuit some on-purpose resistance series lhis fractional-ohm resistor loosely wound coil nichrome wire seen photos happens motor gets soft start because smail additional resis tance limits otherwise very large current surge Shortly after closure second microswitch closes servo motion continues effectively bypasses resistor thus applying full battery voltage motor Similarly two switches open reverse der during shutdown now resistor con nected series braking switch contacts stop-current surge comparably minimized two-switch action happens quickiy transmitters throttle stick ad vanced retarded Im sure results Join Ole nAL ~~0 IMAA 1ff "nC/ ggO Far Membership Information ---Contact Robert A. Blaney o Secretary IMAA 14 Parkview Road Long Valley NJ USA 07953 -4 154 Model Aviation L OPS 18 xi engine quarter scale Contact us free engine test results 5~sPwPIeof CoI%*eta% 9m64 9uec $75-$l0Owhich good O&RRC Electrics/Kopski Continued page 51 r
