MIDWEST CL Models Great beginning controlline flier fun sport new series Goodyear Rac ers styled after full-size Formula aircraft also eligible AMA Scale Racer Class competi tion Kits complete including decals supply en gine paint minwn PRODUCTS CO hi 400 South Indiana St Hobart IndIana 46342 Letters Editor letters will carefully considered general interest used Send ModelAviation 815 15th St NW Washington DC 20005 Mrs Watson Tower Having wife avid modeler 35 years am naturally utterly unin terested anything airplanes larger ones Strangely though other day picked up latest issue Model viation found article really interested Ron Van Puttes article aerodynamics answered letter reader reversed himself previous article attempted make something simple out something very complicated Mr Van Puttes arguments ex planations very scholarly quite convincing uninitiated would ven ture say average lay person never knew much yaw world must point out Mr Van Putte ever failed cover fields fascinating possibilities Permit mention just few add com ments enlightening discussion Mr Van Puttes references adverse yaw moment yaw later proverse yaw omitted another very im portant factor problem inverse yaw created course glid ing motion planes undercarriage upper slipstream plane being flown inverted factors verse yaw can directly related speed engine wind knots aloft number coats dope other covering fuselage other el ments minor nature Conversely sequentially cannot create inverse yaw producing its counterpart outverse yaw doesnt take imagination figure interesting effect natural result outside outbound loops flown part sophisticated pattern flying careful calculation should made pilot considers span circle distance nearest ground zero likelihood severe vertigo tracks plane appropriate neck motions number loops plans attempt Stated algebraically equation would something like OY D L 2 loops attempted course greater outverse yaw course proper number should serted parenthesis equation Spins Immelmans stall turns top hats like require own factoring both inverse outverse yaw conditions would impose upon editors good nature longer although would like address remark what might might have typo graphical error Mr Van Putte mentioned pint reminded old folk song about drunken sailor lines goes like Hey-Ho Up Rises dear friends know about aerodynamics Mrs Frank E Watson Albany GA Tower Mrs Watson Never thought yaw could interesting subject due respect having read VanPuttes column diligently cant help wondering about whatever held spellbound letter led quickly polishing off pint found fine type course did write letter impress editor aerodynamic eruditionwhich say least im pressive So propose use missive Letters Editor already puzzled readers may glimpse light end tunnel Mrs Watson Tower Occasionally something world modeling hits worthy astute comments Such VanPuttes column Yaw can can other things given right treatment amazingly interesting am happy want use expositional material Letters Editor Model Aviation next hits stands very pints may consumed good fun course Wants Old Glider Plans About middle 40s plans gull wing glider never built would like know plans something old still available believe about 100-in wingnice lines Can help John Heere Redwood City CA model describe might have old Cleveland Models kit called Condor think might have gull wing Try Cleveland Model & Supply Co 103 7AA Detroit Cleve 6 Model Aviation Plumb CrazyKit No 254 Miss San BernardinoKit No 255 Lii QuickieKit No 257 land OH 44102 Frank Zaic Box 135 Northridge CA 91324 sells book old gliders full 3-views some like describe Another glider 15-ft span published Air Trails during war John Pond Old Time Plan Service Box 3113 San Jose CA 95156 may have others Museum Disaster nation lost tremendous national asset San Diego Aerospace Museum consumed fire love aviation like losing close personal friend work San Diego Zoo shares beauty Balboa Park Museum have spent almost lunch hours last two years remarkable Museum library ably run archivist Bruce Reynolds have wandered exhibits admiring mentally cat aloging details Sopwith Tripe Fokker E-III JN-4 have photo graphed details accurate flying replica Spirit St Louis have taken advantage 1919 Janes full set volumes printed before Continued page 58 Fox Fuel Line Models Life Blood Passes Through Simple Piece Fuel Line Surely Want Best As engine manufacturers acutely aware large portion called engine problems reality fuel line problems Symptoms fuel line trouble going lean air leaks speed fluctuations inability get rich enough high speed restricted flow Fox Fuel Lines best materials available physical proper ties selected model use Fox Fuel Lines worlds finest Tuff Line Silicone far strongest market semitransparent shows bubbles line heat resis tant Like silicone tubing tends slip off fittings unless care taken Neoprene Actually complex compound much elastic clings fittings main disadvan tage transparent Surgical Tubing Pure Rubber Very flexible Use sharp bends necessary Semi-transparent Shows bubbles line Holds fittings well Main disadvantage tends deteriorate rapidly silicone neoprene Plastic good anybodys dont think much plastic fuel line Advantage low price transparency Disadvantage tends collapse bends hardens age heat Tends leak air fittings after ITEM FUEL LINEPRICEITEM FUEL LINEPRICE 86880 Small Neoprene2 Pkg 5086885 Small Clear Plastic2 P11g 25 86881Medium Neoprene2Pkg6086886Medium Clear Plastic21/2P11g30 86882 Large Neoprene2 Pkg7086887 Large Clear Plastic2 P11g.40 86883 Small Taft Line1 Pkg. 5586888 Small Surgical Tubing2 P11g.50 86884 Medium Taft Line1 Pkg 7086889 Med Surgical Tubing2 P11g.50 86851 Large Taft Line1 Pkg10086890 Large Surgical Tubing2 Pkg.60 FOX MANUFACTURING Fox Model Airplane Products 5305 Towson SmIti Arkansas 72901 e 501-646-1656 Answer iWo-Channel Dilemma NIMBUS 2-channel radio system offers American engineering import prices Features include. 1 Solid state superheterodyne 2 All silicon transistor receiver circuit highly selective front end 3 RF amplifier maximum signal noise ratio unexcelled selectivity 4 2 ultra small EK SM servos greater 4 pounds output thrust 5 Receiver servos equipped 3 pin Deans gold plated plugs 6 Adjustable tension control sticks full line brochure write EK-PRODUCTS INC 3322 Stovall St Irving Texas 75061 USA Distributors dealers contact us new merchandising program 1977 EK-Praac1s InC 779 EK-Products . . e1978 7 Openers continued page 4 early-SOs before transistor popped up model mag article replace second relay tube Lorenz two-tuber Nicads 10 years future Rockwood used servos al fliers doomed escape ments years Single-channel fliers protested 3-channel Babcock would kill hobby because permit ted plane loopand kind money So almost 20 years average RCer flew single-tube receiver whether gas hard tube enough make strong men scream month fondly recall Lorenz gas-tube receiver Berkeleys Aerotrol similarone several Lo renz designs small light about size match box Like Good Brothers preceeded it op erated on-off carrier later guys would find sorts ways tricky levers motor-driven beep boxes etc manage crude proportional control playing way carrier turned off RK-6 1 tube idled about 13 15 mils signal dropping say 2 mil relay adjusted operate between say 11 13 mils Vibration drove relay arm atures crazy such current settings planes shivered shimmied ways happy hunting ground didnt get escapements would Lorenz receiver stood out like lighthouse Ed gilded lilly little two-tuber break-throughcan imagine day sophisticated equipment two-tuber first-tube cur rent change dropped signal trig gering second tubewhich idled mere 2/10 mil sotriggering walloping rise 25 mils Such cur rent change allowed reliable relay ad justments Moreover two-tuber op erated couple pencells bat teries plus tiny hearing aid battery B Ed magician demonstrated two-tuber basement test panel two meters tube Watching work simultane ously far out experience early fifties RK-61s became short supply Hivac gas tube imported England gas tubes sensitive way attain sensitivity put prolonged idle didnt wear out process attempted flight Sunday baked kitchen ovenJerry Stoloff baked 28 hours before worked properly Saturday despaired field after checking gas-tube receiver 20-foot range Along came two small boys said Mr youve got cook tube Connect booster battery go lunch come back will work gosh did way become expert 1950s Carl Goldberg marking 50th year association hobby has achieved fame own time Magazines will telling about Carl manufacturer and/or Carl modeler may recall us Sail plane Zipper perhaps Valy krie indoor models diamond-fuselage rubber jobs twin-pushers still big may note pop-up tail dethermalizer has attended modern Na tionals Lord knows what else Carl knew always quiet listener talker always thinker weighing attentively word ever said him Always polite Always humble gentle man end less quest perfection can say deserved success prefer say could have happened nicer guy Letters Editor continued page 7 after have scanned old copies Aeroplane Flight Popular Aviation Model Airplane News Flying Aces Cross Cockade Now its gone thing black debris has given up charred OX-S couple Whirlwinds couple Le Rhones some sooty remains un identifiable metal parts board members Aerospace Museum International Aerospace Hall Fame shared building have resolved start museums once again attended emergency meeting held few days after fire Col Owen Clark Col Ed Carey respec tive directors announced new Mu seums would start national solicitation contributions both monetary dis play Clark will DC week seek assistance National Museum Needless say museum loss great scale modelers sig nificant resource think Model Aviation might assist some way spreading word concentrated effort rebuild museums would think modelers particularly scale devotees owe debt gratitude museums act inspiration tangible research re source San Diego Museum nations third largest terms aircraft colateral displays temporary address both Aerospace Museum International Aerospace Hall Fame Room 203 Casa del Prado Balboa Park San Diego California 92101 enclosed photo taken morn ing after fire looking what used entrance Spirit St Louis replica stood immediately side front door Bill Noonan San Diego CA Model Aviation has advised Bill Noonan will act liaison matter stand ready publish information about program restore invaluable facility Also watch future columns Gretz Wischers Takes Exception year ago read article Hal deBolt about high speed flight radio controlled model airplanes Recently read another article Mr deBolt Bet ter Propellers Formula Ones both instances indicated top speed formula airplane 145 150 mph take exception 1976 time trials Sepul veda Basin Los Angeles took fastest time 1669 miles per hour standard formula racer 1977 took fastest time again 18755 av erage way time 20062 mph may some sort record forumula will agree Mr deBolt however importance propeller 1st series runs through traps 1977 using Prather series #2 prop 8 ane prev ious race best time 16469 mph changing Rev Up 9 eased average speed 226 mph 18755 mph am saying race should use large high pitch prop because will lose speed ac celleration turns Mr deBolt article speed does believe formula type air craft could ever take world record 212 mph Russians may right can think few modifica tions LR IA flying would increase speed whole lot First would install retractable landCon tinued page 84 58 Model Aviation Letters Editor continued page 58 EYE HOOKS 436T050 N 1 1 14 fr\~1f4 X 9 MUSIC WIRE NOTCH CLEAR WOOD IX3 36TO 50 LONG plauded three articles Foam Techniques Despite architectural background found difficult follow explanation foam cutter Could Bill Max draw finished foam cutter 1/4 j NOTCH SIDE VIEW CAL BOTH ENDS us Model viation readers Thanks David Strickland Oil City PA ing gear remove canopy streamline cockpit area reduce size left cheek cowl minimum air intake remove completely possible Id reduce flying sur face area including tail limits controlability would use light weight radio battery pack remove en gine control servo anything else non essential reduce weight 5 lb minimum weight would apply Id set up engine run 70% nitro methane use relatively large high pitched propeller doing wouldnt add 25 mph 18755 mph Id hold wing rubber bands George maybe Ill think get time Someday Gene W Sidwell Hollywood CA DeBolt did write about high-speed flight RC models assume Gene thinking account Houston Speed Trails Maynard Hill re ported April 77 MA DeBolt did write Form props May issue year know what timing set up during flights Gene describes Timing world record speed attempts highly complex matter witness Dick Webers account Austrian glider 2742 mph speed record flight page 73 December 1977 Hubert Bitner Jrs Setting RC Helicopter Speed Rec ord February 1978 MA errors can accumulate stop watch timing both ends traps can tens miles per hour split second inac curacyhence FAIs tough requirements order record accp ted evident Sidwell knows make Form 1 go really fast straight line Perhaps can enthuse fellow Californians setting up Houston-type Speed Trials No Sooner Said Done RC Technique/Myers continued page 15 Off stage down aisle Vince Hurd RS systems Ive heard rumors RS dropping out consumer market Vince true No way George Weve worked too hard get give up now advertising budget shifted other magazines order get some mil itary contracts target drones see factory keeps turning out systems before Vince showed two super-transmitters marked RS-XRS has controls optimized pattern flying other opti mized pylon racing primary dif ference pylon racing model has product review product review product review Tutor Patterred after original Nobler famout stuit model ever flown Top Flites 45-in 35-powered Control line aero batic trainer has wing area 410 sq flying weight 2 2/2 lbs Special construction feature assures easily built light-weight accurate warp-free wing 0-tube leading edgesaid 20 25% stronger conventional designs Structure balsa maple motor mounts preshaped flaps elevator One-piece plywood re-en forced fuselage precision machined ac curate cut-outs wing motor mounts stabilizer Die-cut parts have printed numbers identification Kit includes nylon elevator flap horns nylon motor mount spacers formed landing tail gear tank mountings nylon belicrank adjustable lead-out guide full-size plans Top Flite Models Inc 1901 N Narragansett Ave Chicago 1160639 Bill Evans Max Lester must ap- product review product review product review dual-rate switch changes both eleva tor aileron race pilot can have additional control takeoff landing plane going slow controls less effective aero-dynam ically pattern transmitter has dualrate aileron sports roll ton RS servos now enjoy motors tested before installation servo factory-aging process assembled servo Pro-Line super transmitter de scribed April issue Pro-Line also showing no frills Cadet series de signed compete bottom price range buddy-box systems turn off based fact can used two sets same manu facturer sometimes same series World Engines showed way Expert Mark II makes sense case students transmitter sends RF students plane instructors transmitter provides control modulation slave mode As result student now flies own plane buddy system instead yours Good thinking Thats about transmitter sub ject Next month Ill discussing GelCells George M Myers 70 Froehlich Farm Road Hicksville NY 11801 RC Scale Wischers continued page 24 sponsors anxious rekindle terest AMA Scale its ob vious Scale has tremendous spectator appeal AMA Precision Scale presents ultimate challenge excite ment ways scale aircraft uti lizes some persons important qualities instance what scale buff has endless dreams about building flying new project imagi nation work research docu 84 Model Aviation DONT IRMELE USE BALSARITE Balsarte sinks deep wood melts & intermixes adhesive iron-on coverings heat IAmaAdU applied No trapped air permanent ad hesion no fuel creep fillets cinch use Monokote So fim o Cove e Ga sa te sa must CQVERITE IL
Edition: Model Aviation - 1978/06
Page Numbers: 6, 7, 58, 84
MIDWEST CL Models Great beginning controlline flier fun sport new series Goodyear Rac ers styled after full-size Formula aircraft also eligible AMA Scale Racer Class competi tion Kits complete including decals supply en gine paint minwn PRODUCTS CO hi 400 South Indiana St Hobart IndIana 46342 Letters Editor letters will carefully considered general interest used Send ModelAviation 815 15th St NW Washington DC 20005 Mrs Watson Tower Having wife avid modeler 35 years am naturally utterly unin terested anything airplanes larger ones Strangely though other day picked up latest issue Model viation found article really interested Ron Van Puttes article aerodynamics answered letter reader reversed himself previous article attempted make something simple out something very complicated Mr Van Puttes arguments ex planations very scholarly quite convincing uninitiated would ven ture say average lay person never knew much yaw world must point out Mr Van Putte ever failed cover fields fascinating possibilities Permit mention just few add com ments enlightening discussion Mr Van Puttes references adverse yaw moment yaw later proverse yaw omitted another very im portant factor problem inverse yaw created course glid ing motion planes undercarriage upper slipstream plane being flown inverted factors verse yaw can directly related speed engine wind knots aloft number coats dope other covering fuselage other el ments minor nature Conversely sequentially cannot create inverse yaw producing its counterpart outverse yaw doesnt take imagination figure interesting effect natural result outside outbound loops flown part sophisticated pattern flying careful calculation should made pilot considers span circle distance nearest ground zero likelihood severe vertigo tracks plane appropriate neck motions number loops plans attempt Stated algebraically equation would something like OY D L 2 loops attempted course greater outverse yaw course proper number should serted parenthesis equation Spins Immelmans stall turns top hats like require own factoring both inverse outverse yaw conditions would impose upon editors good nature longer although would like address remark what might might have typo graphical error Mr Van Putte mentioned pint reminded old folk song about drunken sailor lines goes like Hey-Ho Up Rises dear friends know about aerodynamics Mrs Frank E Watson Albany GA Tower Mrs Watson Never thought yaw could interesting subject due respect having read VanPuttes column diligently cant help wondering about whatever held spellbound letter led quickly polishing off pint found fine type course did write letter impress editor aerodynamic eruditionwhich say least im pressive So propose use missive Letters Editor already puzzled readers may glimpse light end tunnel Mrs Watson Tower Occasionally something world modeling hits worthy astute comments Such VanPuttes column Yaw can can other things given right treatment amazingly interesting am happy want use expositional material Letters Editor Model Aviation next hits stands very pints may consumed good fun course Wants Old Glider Plans About middle 40s plans gull wing glider never built would like know plans something old still available believe about 100-in wingnice lines Can help John Heere Redwood City CA model describe might have old Cleveland Models kit called Condor think might have gull wing Try Cleveland Model & Supply Co 103 7AA Detroit Cleve 6 Model Aviation Plumb CrazyKit No 254 Miss San BernardinoKit No 255 Lii QuickieKit No 257 land OH 44102 Frank Zaic Box 135 Northridge CA 91324 sells book old gliders full 3-views some like describe Another glider 15-ft span published Air Trails during war John Pond Old Time Plan Service Box 3113 San Jose CA 95156 may have others Museum Disaster nation lost tremendous national asset San Diego Aerospace Museum consumed fire love aviation like losing close personal friend work San Diego Zoo shares beauty Balboa Park Museum have spent almost lunch hours last two years remarkable Museum library ably run archivist Bruce Reynolds have wandered exhibits admiring mentally cat aloging details Sopwith Tripe Fokker E-III JN-4 have photo graphed details accurate flying replica Spirit St Louis have taken advantage 1919 Janes full set volumes printed before Continued page 58 Fox Fuel Line Models Life Blood Passes Through Simple Piece Fuel Line Surely Want Best As engine manufacturers acutely aware large portion called engine problems reality fuel line problems Symptoms fuel line trouble going lean air leaks speed fluctuations inability get rich enough high speed restricted flow Fox Fuel Lines best materials available physical proper ties selected model use Fox Fuel Lines worlds finest Tuff Line Silicone far strongest market semitransparent shows bubbles line heat resis tant Like silicone tubing tends slip off fittings unless care taken Neoprene Actually complex compound much elastic clings fittings main disadvan tage transparent Surgical Tubing Pure Rubber Very flexible Use sharp bends necessary Semi-transparent Shows bubbles line Holds fittings well Main disadvantage tends deteriorate rapidly silicone neoprene Plastic good anybodys dont think much plastic fuel line Advantage low price transparency Disadvantage tends collapse bends hardens age heat Tends leak air fittings after ITEM FUEL LINEPRICEITEM FUEL LINEPRICE 86880 Small Neoprene2 Pkg 5086885 Small Clear Plastic2 P11g 25 86881Medium Neoprene2Pkg6086886Medium Clear Plastic21/2P11g30 86882 Large Neoprene2 Pkg7086887 Large Clear Plastic2 P11g.40 86883 Small Taft Line1 Pkg. 5586888 Small Surgical Tubing2 P11g.50 86884 Medium Taft Line1 Pkg 7086889 Med Surgical Tubing2 P11g.50 86851 Large Taft Line1 Pkg10086890 Large Surgical Tubing2 Pkg.60 FOX MANUFACTURING Fox Model Airplane Products 5305 Towson SmIti Arkansas 72901 e 501-646-1656 Answer iWo-Channel Dilemma NIMBUS 2-channel radio system offers American engineering import prices Features include. 1 Solid state superheterodyne 2 All silicon transistor receiver circuit highly selective front end 3 RF amplifier maximum signal noise ratio unexcelled selectivity 4 2 ultra small EK SM servos greater 4 pounds output thrust 5 Receiver servos equipped 3 pin Deans gold plated plugs 6 Adjustable tension control sticks full line brochure write EK-PRODUCTS INC 3322 Stovall St Irving Texas 75061 USA Distributors dealers contact us new merchandising program 1977 EK-Praac1s InC 779 EK-Products . . e1978 7 Openers continued page 4 early-SOs before transistor popped up model mag article replace second relay tube Lorenz two-tuber Nicads 10 years future Rockwood used servos al fliers doomed escape ments years Single-channel fliers protested 3-channel Babcock would kill hobby because permit ted plane loopand kind money So almost 20 years average RCer flew single-tube receiver whether gas hard tube enough make strong men scream month fondly recall Lorenz gas-tube receiver Berkeleys Aerotrol similarone several Lo renz designs small light about size match box Like Good Brothers preceeded it op erated on-off carrier later guys would find sorts ways tricky levers motor-driven beep boxes etc manage crude proportional control playing way carrier turned off RK-6 1 tube idled about 13 15 mils signal dropping say 2 mil relay adjusted operate between say 11 13 mils Vibration drove relay arm atures crazy such current settings planes shivered shimmied ways happy hunting ground didnt get escapements would Lorenz receiver stood out like lighthouse Ed gilded lilly little two-tuber break-throughcan imagine day sophisticated equipment two-tuber first-tube cur rent change dropped signal trig gering second tubewhich idled mere 2/10 mil sotriggering walloping rise 25 mils Such cur rent change allowed reliable relay ad justments Moreover two-tuber op erated couple pencells bat teries plus tiny hearing aid battery B Ed magician demonstrated two-tuber basement test panel two meters tube Watching work simultane ously far out experience early fifties RK-61s became short supply Hivac gas tube imported England gas tubes sensitive way attain sensitivity put prolonged idle didnt wear out process attempted flight Sunday baked kitchen ovenJerry Stoloff baked 28 hours before worked properly Saturday despaired field after checking gas-tube receiver 20-foot range Along came two small boys said Mr youve got cook tube Connect booster battery go lunch come back will work gosh did way become expert 1950s Carl Goldberg marking 50th year association hobby has achieved fame own time Magazines will telling about Carl manufacturer and/or Carl modeler may recall us Sail plane Zipper perhaps Valy krie indoor models diamond-fuselage rubber jobs twin-pushers still big may note pop-up tail dethermalizer has attended modern Na tionals Lord knows what else Carl knew always quiet listener talker always thinker weighing attentively word ever said him Always polite Always humble gentle man end less quest perfection can say deserved success prefer say could have happened nicer guy Letters Editor continued page 7 after have scanned old copies Aeroplane Flight Popular Aviation Model Airplane News Flying Aces Cross Cockade Now its gone thing black debris has given up charred OX-S couple Whirlwinds couple Le Rhones some sooty remains un identifiable metal parts board members Aerospace Museum International Aerospace Hall Fame shared building have resolved start museums once again attended emergency meeting held few days after fire Col Owen Clark Col Ed Carey respec tive directors announced new Mu seums would start national solicitation contributions both monetary dis play Clark will DC week seek assistance National Museum Needless say museum loss great scale modelers sig nificant resource think Model Aviation might assist some way spreading word concentrated effort rebuild museums would think modelers particularly scale devotees owe debt gratitude museums act inspiration tangible research re source San Diego Museum nations third largest terms aircraft colateral displays temporary address both Aerospace Museum International Aerospace Hall Fame Room 203 Casa del Prado Balboa Park San Diego California 92101 enclosed photo taken morn ing after fire looking what used entrance Spirit St Louis replica stood immediately side front door Bill Noonan San Diego CA Model Aviation has advised Bill Noonan will act liaison matter stand ready publish information about program restore invaluable facility Also watch future columns Gretz Wischers Takes Exception year ago read article Hal deBolt about high speed flight radio controlled model airplanes Recently read another article Mr deBolt Bet ter Propellers Formula Ones both instances indicated top speed formula airplane 145 150 mph take exception 1976 time trials Sepul veda Basin Los Angeles took fastest time 1669 miles per hour standard formula racer 1977 took fastest time again 18755 av erage way time 20062 mph may some sort record forumula will agree Mr deBolt however importance propeller 1st series runs through traps 1977 using Prather series #2 prop 8 ane prev ious race best time 16469 mph changing Rev Up 9 eased average speed 226 mph 18755 mph am saying race should use large high pitch prop because will lose speed ac celleration turns Mr deBolt article speed does believe formula type air craft could ever take world record 212 mph Russians may right can think few modifica tions LR IA flying would increase speed whole lot First would install retractable landCon tinued page 84 58 Model Aviation Letters Editor continued page 58 EYE HOOKS 436T050 N 1 1 14 fr\~1f4 X 9 MUSIC WIRE NOTCH CLEAR WOOD IX3 36TO 50 LONG plauded three articles Foam Techniques Despite architectural background found difficult follow explanation foam cutter Could Bill Max draw finished foam cutter 1/4 j NOTCH SIDE VIEW CAL BOTH ENDS us Model viation readers Thanks David Strickland Oil City PA ing gear remove canopy streamline cockpit area reduce size left cheek cowl minimum air intake remove completely possible Id reduce flying sur face area including tail limits controlability would use light weight radio battery pack remove en gine control servo anything else non essential reduce weight 5 lb minimum weight would apply Id set up engine run 70% nitro methane use relatively large high pitched propeller doing wouldnt add 25 mph 18755 mph Id hold wing rubber bands George maybe Ill think get time Someday Gene W Sidwell Hollywood CA DeBolt did write about high-speed flight RC models assume Gene thinking account Houston Speed Trails Maynard Hill re ported April 77 MA DeBolt did write Form props May issue year know what timing set up during flights Gene describes Timing world record speed attempts highly complex matter witness Dick Webers account Austrian glider 2742 mph speed record flight page 73 December 1977 Hubert Bitner Jrs Setting RC Helicopter Speed Rec ord February 1978 MA errors can accumulate stop watch timing both ends traps can tens miles per hour split second inac curacyhence FAIs tough requirements order record accp ted evident Sidwell knows make Form 1 go really fast straight line Perhaps can enthuse fellow Californians setting up Houston-type Speed Trials No Sooner Said Done RC Technique/Myers continued page 15 Off stage down aisle Vince Hurd RS systems Ive heard rumors RS dropping out consumer market Vince true No way George Weve worked too hard get give up now advertising budget shifted other magazines order get some mil itary contracts target drones see factory keeps turning out systems before Vince showed two super-transmitters marked RS-XRS has controls optimized pattern flying other opti mized pylon racing primary dif ference pylon racing model has product review product review product review Tutor Patterred after original Nobler famout stuit model ever flown Top Flites 45-in 35-powered Control line aero batic trainer has wing area 410 sq flying weight 2 2/2 lbs Special construction feature assures easily built light-weight accurate warp-free wing 0-tube leading edgesaid 20 25% stronger conventional designs Structure balsa maple motor mounts preshaped flaps elevator One-piece plywood re-en forced fuselage precision machined ac curate cut-outs wing motor mounts stabilizer Die-cut parts have printed numbers identification Kit includes nylon elevator flap horns nylon motor mount spacers formed landing tail gear tank mountings nylon belicrank adjustable lead-out guide full-size plans Top Flite Models Inc 1901 N Narragansett Ave Chicago 1160639 Bill Evans Max Lester must ap- product review product review product review dual-rate switch changes both eleva tor aileron race pilot can have additional control takeoff landing plane going slow controls less effective aero-dynam ically pattern transmitter has dualrate aileron sports roll ton RS servos now enjoy motors tested before installation servo factory-aging process assembled servo Pro-Line super transmitter de scribed April issue Pro-Line also showing no frills Cadet series de signed compete bottom price range buddy-box systems turn off based fact can used two sets same manu facturer sometimes same series World Engines showed way Expert Mark II makes sense case students transmitter sends RF students plane instructors transmitter provides control modulation slave mode As result student now flies own plane buddy system instead yours Good thinking Thats about transmitter sub ject Next month Ill discussing GelCells George M Myers 70 Froehlich Farm Road Hicksville NY 11801 RC Scale Wischers continued page 24 sponsors anxious rekindle terest AMA Scale its ob vious Scale has tremendous spectator appeal AMA Precision Scale presents ultimate challenge excite ment ways scale aircraft uti lizes some persons important qualities instance what scale buff has endless dreams about building flying new project imagi nation work research docu 84 Model Aviation DONT IRMELE USE BALSARITE Balsarte sinks deep wood melts & intermixes adhesive iron-on coverings heat IAmaAdU applied No trapped air permanent ad hesion no fuel creep fillets cinch use Monokote So fim o Cove e Ga sa te sa must CQVERITE IL
Edition: Model Aviation - 1978/06
Page Numbers: 6, 7, 58, 84
MIDWEST CL Models Great beginning controlline flier fun sport new series Goodyear Rac ers styled after full-size Formula aircraft also eligible AMA Scale Racer Class competi tion Kits complete including decals supply en gine paint minwn PRODUCTS CO hi 400 South Indiana St Hobart IndIana 46342 Letters Editor letters will carefully considered general interest used Send ModelAviation 815 15th St NW Washington DC 20005 Mrs Watson Tower Having wife avid modeler 35 years am naturally utterly unin terested anything airplanes larger ones Strangely though other day picked up latest issue Model viation found article really interested Ron Van Puttes article aerodynamics answered letter reader reversed himself previous article attempted make something simple out something very complicated Mr Van Puttes arguments ex planations very scholarly quite convincing uninitiated would ven ture say average lay person never knew much yaw world must point out Mr Van Putte ever failed cover fields fascinating possibilities Permit mention just few add com ments enlightening discussion Mr Van Puttes references adverse yaw moment yaw later proverse yaw omitted another very im portant factor problem inverse yaw created course glid ing motion planes undercarriage upper slipstream plane being flown inverted factors verse yaw can directly related speed engine wind knots aloft number coats dope other covering fuselage other el ments minor nature Conversely sequentially cannot create inverse yaw producing its counterpart outverse yaw doesnt take imagination figure interesting effect natural result outside outbound loops flown part sophisticated pattern flying careful calculation should made pilot considers span circle distance nearest ground zero likelihood severe vertigo tracks plane appropriate neck motions number loops plans attempt Stated algebraically equation would something like OY D L 2 loops attempted course greater outverse yaw course proper number should serted parenthesis equation Spins Immelmans stall turns top hats like require own factoring both inverse outverse yaw conditions would impose upon editors good nature longer although would like address remark what might might have typo graphical error Mr Van Putte mentioned pint reminded old folk song about drunken sailor lines goes like Hey-Ho Up Rises dear friends know about aerodynamics Mrs Frank E Watson Albany GA Tower Mrs Watson Never thought yaw could interesting subject due respect having read VanPuttes column diligently cant help wondering about whatever held spellbound letter led quickly polishing off pint found fine type course did write letter impress editor aerodynamic eruditionwhich say least im pressive So propose use missive Letters Editor already puzzled readers may glimpse light end tunnel Mrs Watson Tower Occasionally something world modeling hits worthy astute comments Such VanPuttes column Yaw can can other things given right treatment amazingly interesting am happy want use expositional material Letters Editor Model Aviation next hits stands very pints may consumed good fun course Wants Old Glider Plans About middle 40s plans gull wing glider never built would like know plans something old still available believe about 100-in wingnice lines Can help John Heere Redwood City CA model describe might have old Cleveland Models kit called Condor think might have gull wing Try Cleveland Model & Supply Co 103 7AA Detroit Cleve 6 Model Aviation Plumb CrazyKit No 254 Miss San BernardinoKit No 255 Lii QuickieKit No 257 land OH 44102 Frank Zaic Box 135 Northridge CA 91324 sells book old gliders full 3-views some like describe Another glider 15-ft span published Air Trails during war John Pond Old Time Plan Service Box 3113 San Jose CA 95156 may have others Museum Disaster nation lost tremendous national asset San Diego Aerospace Museum consumed fire love aviation like losing close personal friend work San Diego Zoo shares beauty Balboa Park Museum have spent almost lunch hours last two years remarkable Museum library ably run archivist Bruce Reynolds have wandered exhibits admiring mentally cat aloging details Sopwith Tripe Fokker E-III JN-4 have photo graphed details accurate flying replica Spirit St Louis have taken advantage 1919 Janes full set volumes printed before Continued page 58 Fox Fuel Line Models Life Blood Passes Through Simple Piece Fuel Line Surely Want Best As engine manufacturers acutely aware large portion called engine problems reality fuel line problems Symptoms fuel line trouble going lean air leaks speed fluctuations inability get rich enough high speed restricted flow Fox Fuel Lines best materials available physical proper ties selected model use Fox Fuel Lines worlds finest Tuff Line Silicone far strongest market semitransparent shows bubbles line heat resis tant Like silicone tubing tends slip off fittings unless care taken Neoprene Actually complex compound much elastic clings fittings main disadvan tage transparent Surgical Tubing Pure Rubber Very flexible Use sharp bends necessary Semi-transparent Shows bubbles line Holds fittings well Main disadvantage tends deteriorate rapidly silicone neoprene Plastic good anybodys dont think much plastic fuel line Advantage low price transparency Disadvantage tends collapse bends hardens age heat Tends leak air fittings after ITEM FUEL LINEPRICEITEM FUEL LINEPRICE 86880 Small Neoprene2 Pkg 5086885 Small Clear Plastic2 P11g 25 86881Medium Neoprene2Pkg6086886Medium Clear Plastic21/2P11g30 86882 Large Neoprene2 Pkg7086887 Large Clear Plastic2 P11g.40 86883 Small Taft Line1 Pkg. 5586888 Small Surgical Tubing2 P11g.50 86884 Medium Taft Line1 Pkg 7086889 Med Surgical Tubing2 P11g.50 86851 Large Taft Line1 Pkg10086890 Large Surgical Tubing2 Pkg.60 FOX MANUFACTURING Fox Model Airplane Products 5305 Towson SmIti Arkansas 72901 e 501-646-1656 Answer iWo-Channel Dilemma NIMBUS 2-channel radio system offers American engineering import prices Features include. 1 Solid state superheterodyne 2 All silicon transistor receiver circuit highly selective front end 3 RF amplifier maximum signal noise ratio unexcelled selectivity 4 2 ultra small EK SM servos greater 4 pounds output thrust 5 Receiver servos equipped 3 pin Deans gold plated plugs 6 Adjustable tension control sticks full line brochure write EK-PRODUCTS INC 3322 Stovall St Irving Texas 75061 USA Distributors dealers contact us new merchandising program 1977 EK-Praac1s InC 779 EK-Products . . e1978 7 Openers continued page 4 early-SOs before transistor popped up model mag article replace second relay tube Lorenz two-tuber Nicads 10 years future Rockwood used servos al fliers doomed escape ments years Single-channel fliers protested 3-channel Babcock would kill hobby because permit ted plane loopand kind money So almost 20 years average RCer flew single-tube receiver whether gas hard tube enough make strong men scream month fondly recall Lorenz gas-tube receiver Berkeleys Aerotrol similarone several Lo renz designs small light about size match box Like Good Brothers preceeded it op erated on-off carrier later guys would find sorts ways tricky levers motor-driven beep boxes etc manage crude proportional control playing way carrier turned off RK-6 1 tube idled about 13 15 mils signal dropping say 2 mil relay adjusted operate between say 11 13 mils Vibration drove relay arm atures crazy such current settings planes shivered shimmied ways happy hunting ground didnt get escapements would Lorenz receiver stood out like lighthouse Ed gilded lilly little two-tuber break-throughcan imagine day sophisticated equipment two-tuber first-tube cur rent change dropped signal trig gering second tubewhich idled mere 2/10 mil sotriggering walloping rise 25 mils Such cur rent change allowed reliable relay ad justments Moreover two-tuber op erated couple pencells bat teries plus tiny hearing aid battery B Ed magician demonstrated two-tuber basement test panel two meters tube Watching work simultane ously far out experience early fifties RK-61s became short supply Hivac gas tube imported England gas tubes sensitive way attain sensitivity put prolonged idle didnt wear out process attempted flight Sunday baked kitchen ovenJerry Stoloff baked 28 hours before worked properly Saturday despaired field after checking gas-tube receiver 20-foot range Along came two small boys said Mr youve got cook tube Connect booster battery go lunch come back will work gosh did way become expert 1950s Carl Goldberg marking 50th year association hobby has achieved fame own time Magazines will telling about Carl manufacturer and/or Carl modeler may recall us Sail plane Zipper perhaps Valy krie indoor models diamond-fuselage rubber jobs twin-pushers still big may note pop-up tail dethermalizer has attended modern Na tionals Lord knows what else Carl knew always quiet listener talker always thinker weighing attentively word ever said him Always polite Always humble gentle man end less quest perfection can say deserved success prefer say could have happened nicer guy Letters Editor continued page 7 after have scanned old copies Aeroplane Flight Popular Aviation Model Airplane News Flying Aces Cross Cockade Now its gone thing black debris has given up charred OX-S couple Whirlwinds couple Le Rhones some sooty remains un identifiable metal parts board members Aerospace Museum International Aerospace Hall Fame shared building have resolved start museums once again attended emergency meeting held few days after fire Col Owen Clark Col Ed Carey respec tive directors announced new Mu seums would start national solicitation contributions both monetary dis play Clark will DC week seek assistance National Museum Needless say museum loss great scale modelers sig nificant resource think Model Aviation might assist some way spreading word concentrated effort rebuild museums would think modelers particularly scale devotees owe debt gratitude museums act inspiration tangible research re source San Diego Museum nations third largest terms aircraft colateral displays temporary address both Aerospace Museum International Aerospace Hall Fame Room 203 Casa del Prado Balboa Park San Diego California 92101 enclosed photo taken morn ing after fire looking what used entrance Spirit St Louis replica stood immediately side front door Bill Noonan San Diego CA Model Aviation has advised Bill Noonan will act liaison matter stand ready publish information about program restore invaluable facility Also watch future columns Gretz Wischers Takes Exception year ago read article Hal deBolt about high speed flight radio controlled model airplanes Recently read another article Mr deBolt Bet ter Propellers Formula Ones both instances indicated top speed formula airplane 145 150 mph take exception 1976 time trials Sepul veda Basin Los Angeles took fastest time 1669 miles per hour standard formula racer 1977 took fastest time again 18755 av erage way time 20062 mph may some sort record forumula will agree Mr deBolt however importance propeller 1st series runs through traps 1977 using Prather series #2 prop 8 ane prev ious race best time 16469 mph changing Rev Up 9 eased average speed 226 mph 18755 mph am saying race should use large high pitch prop because will lose speed ac celleration turns Mr deBolt article speed does believe formula type air craft could ever take world record 212 mph Russians may right can think few modifica tions LR IA flying would increase speed whole lot First would install retractable landCon tinued page 84 58 Model Aviation Letters Editor continued page 58 EYE HOOKS 436T050 N 1 1 14 fr\~1f4 X 9 MUSIC WIRE NOTCH CLEAR WOOD IX3 36TO 50 LONG plauded three articles Foam Techniques Despite architectural background found difficult follow explanation foam cutter Could Bill Max draw finished foam cutter 1/4 j NOTCH SIDE VIEW CAL BOTH ENDS us Model viation readers Thanks David Strickland Oil City PA ing gear remove canopy streamline cockpit area reduce size left cheek cowl minimum air intake remove completely possible Id reduce flying sur face area including tail limits controlability would use light weight radio battery pack remove en gine control servo anything else non essential reduce weight 5 lb minimum weight would apply Id set up engine run 70% nitro methane use relatively large high pitched propeller doing wouldnt add 25 mph 18755 mph Id hold wing rubber bands George maybe Ill think get time Someday Gene W Sidwell Hollywood CA DeBolt did write about high-speed flight RC models assume Gene thinking account Houston Speed Trails Maynard Hill re ported April 77 MA DeBolt did write Form props May issue year know what timing set up during flights Gene describes Timing world record speed attempts highly complex matter witness Dick Webers account Austrian glider 2742 mph speed record flight page 73 December 1977 Hubert Bitner Jrs Setting RC Helicopter Speed Rec ord February 1978 MA errors can accumulate stop watch timing both ends traps can tens miles per hour split second inac curacyhence FAIs tough requirements order record accp ted evident Sidwell knows make Form 1 go really fast straight line Perhaps can enthuse fellow Californians setting up Houston-type Speed Trials No Sooner Said Done RC Technique/Myers continued page 15 Off stage down aisle Vince Hurd RS systems Ive heard rumors RS dropping out consumer market Vince true No way George Weve worked too hard get give up now advertising budget shifted other magazines order get some mil itary contracts target drones see factory keeps turning out systems before Vince showed two super-transmitters marked RS-XRS has controls optimized pattern flying other opti mized pylon racing primary dif ference pylon racing model has product review product review product review Tutor Patterred after original Nobler famout stuit model ever flown Top Flites 45-in 35-powered Control line aero batic trainer has wing area 410 sq flying weight 2 2/2 lbs Special construction feature assures easily built light-weight accurate warp-free wing 0-tube leading edgesaid 20 25% stronger conventional designs Structure balsa maple motor mounts preshaped flaps elevator One-piece plywood re-en forced fuselage precision machined ac curate cut-outs wing motor mounts stabilizer Die-cut parts have printed numbers identification Kit includes nylon elevator flap horns nylon motor mount spacers formed landing tail gear tank mountings nylon belicrank adjustable lead-out guide full-size plans Top Flite Models Inc 1901 N Narragansett Ave Chicago 1160639 Bill Evans Max Lester must ap- product review product review product review dual-rate switch changes both eleva tor aileron race pilot can have additional control takeoff landing plane going slow controls less effective aero-dynam ically pattern transmitter has dualrate aileron sports roll ton RS servos now enjoy motors tested before installation servo factory-aging process assembled servo Pro-Line super transmitter de scribed April issue Pro-Line also showing no frills Cadet series de signed compete bottom price range buddy-box systems turn off based fact can used two sets same manu facturer sometimes same series World Engines showed way Expert Mark II makes sense case students transmitter sends RF students plane instructors transmitter provides control modulation slave mode As result student now flies own plane buddy system instead yours Good thinking Thats about transmitter sub ject Next month Ill discussing GelCells George M Myers 70 Froehlich Farm Road Hicksville NY 11801 RC Scale Wischers continued page 24 sponsors anxious rekindle terest AMA Scale its ob vious Scale has tremendous spectator appeal AMA Precision Scale presents ultimate challenge excite ment ways scale aircraft uti lizes some persons important qualities instance what scale buff has endless dreams about building flying new project imagi nation work research docu 84 Model Aviation DONT IRMELE USE BALSARITE Balsarte sinks deep wood melts & intermixes adhesive iron-on coverings heat IAmaAdU applied No trapped air permanent ad hesion no fuel creep fillets cinch use Monokote So fim o Cove e Ga sa te sa must CQVERITE IL
Edition: Model Aviation - 1978/06
Page Numbers: 6, 7, 58, 84
MIDWEST CL Models Great beginning controlline flier fun sport new series Goodyear Rac ers styled after full-size Formula aircraft also eligible AMA Scale Racer Class competi tion Kits complete including decals supply en gine paint minwn PRODUCTS CO hi 400 South Indiana St Hobart IndIana 46342 Letters Editor letters will carefully considered general interest used Send ModelAviation 815 15th St NW Washington DC 20005 Mrs Watson Tower Having wife avid modeler 35 years am naturally utterly unin terested anything airplanes larger ones Strangely though other day picked up latest issue Model viation found article really interested Ron Van Puttes article aerodynamics answered letter reader reversed himself previous article attempted make something simple out something very complicated Mr Van Puttes arguments ex planations very scholarly quite convincing uninitiated would ven ture say average lay person never knew much yaw world must point out Mr Van Putte ever failed cover fields fascinating possibilities Permit mention just few add com ments enlightening discussion Mr Van Puttes references adverse yaw moment yaw later proverse yaw omitted another very im portant factor problem inverse yaw created course glid ing motion planes undercarriage upper slipstream plane being flown inverted factors verse yaw can directly related speed engine wind knots aloft number coats dope other covering fuselage other el ments minor nature Conversely sequentially cannot create inverse yaw producing its counterpart outverse yaw doesnt take imagination figure interesting effect natural result outside outbound loops flown part sophisticated pattern flying careful calculation should made pilot considers span circle distance nearest ground zero likelihood severe vertigo tracks plane appropriate neck motions number loops plans attempt Stated algebraically equation would something like OY D L 2 loops attempted course greater outverse yaw course proper number should serted parenthesis equation Spins Immelmans stall turns top hats like require own factoring both inverse outverse yaw conditions would impose upon editors good nature longer although would like address remark what might might have typo graphical error Mr Van Putte mentioned pint reminded old folk song about drunken sailor lines goes like Hey-Ho Up Rises dear friends know about aerodynamics Mrs Frank E Watson Albany GA Tower Mrs Watson Never thought yaw could interesting subject due respect having read VanPuttes column diligently cant help wondering about whatever held spellbound letter led quickly polishing off pint found fine type course did write letter impress editor aerodynamic eruditionwhich say least im pressive So propose use missive Letters Editor already puzzled readers may glimpse light end tunnel Mrs Watson Tower Occasionally something world modeling hits worthy astute comments Such VanPuttes column Yaw can can other things given right treatment amazingly interesting am happy want use expositional material Letters Editor Model Aviation next hits stands very pints may consumed good fun course Wants Old Glider Plans About middle 40s plans gull wing glider never built would like know plans something old still available believe about 100-in wingnice lines Can help John Heere Redwood City CA model describe might have old Cleveland Models kit called Condor think might have gull wing Try Cleveland Model & Supply Co 103 7AA Detroit Cleve 6 Model Aviation Plumb CrazyKit No 254 Miss San BernardinoKit No 255 Lii QuickieKit No 257 land OH 44102 Frank Zaic Box 135 Northridge CA 91324 sells book old gliders full 3-views some like describe Another glider 15-ft span published Air Trails during war John Pond Old Time Plan Service Box 3113 San Jose CA 95156 may have others Museum Disaster nation lost tremendous national asset San Diego Aerospace Museum consumed fire love aviation like losing close personal friend work San Diego Zoo shares beauty Balboa Park Museum have spent almost lunch hours last two years remarkable Museum library ably run archivist Bruce Reynolds have wandered exhibits admiring mentally cat aloging details Sopwith Tripe Fokker E-III JN-4 have photo graphed details accurate flying replica Spirit St Louis have taken advantage 1919 Janes full set volumes printed before Continued page 58 Fox Fuel Line Models Life Blood Passes Through Simple Piece Fuel Line Surely Want Best As engine manufacturers acutely aware large portion called engine problems reality fuel line problems Symptoms fuel line trouble going lean air leaks speed fluctuations inability get rich enough high speed restricted flow Fox Fuel Lines best materials available physical proper ties selected model use Fox Fuel Lines worlds finest Tuff Line Silicone far strongest market semitransparent shows bubbles line heat resis tant Like silicone tubing tends slip off fittings unless care taken Neoprene Actually complex compound much elastic clings fittings main disadvan tage transparent Surgical Tubing Pure Rubber Very flexible Use sharp bends necessary Semi-transparent Shows bubbles line Holds fittings well Main disadvantage tends deteriorate rapidly silicone neoprene Plastic good anybodys dont think much plastic fuel line Advantage low price transparency Disadvantage tends collapse bends hardens age heat Tends leak air fittings after ITEM FUEL LINEPRICEITEM FUEL LINEPRICE 86880 Small Neoprene2 Pkg 5086885 Small Clear Plastic2 P11g 25 86881Medium Neoprene2Pkg6086886Medium Clear Plastic21/2P11g30 86882 Large Neoprene2 Pkg7086887 Large Clear Plastic2 P11g.40 86883 Small Taft Line1 Pkg. 5586888 Small Surgical Tubing2 P11g.50 86884 Medium Taft Line1 Pkg 7086889 Med Surgical Tubing2 P11g.50 86851 Large Taft Line1 Pkg10086890 Large Surgical Tubing2 Pkg.60 FOX MANUFACTURING Fox Model Airplane Products 5305 Towson SmIti Arkansas 72901 e 501-646-1656 Answer iWo-Channel Dilemma NIMBUS 2-channel radio system offers American engineering import prices Features include. 1 Solid state superheterodyne 2 All silicon transistor receiver circuit highly selective front end 3 RF amplifier maximum signal noise ratio unexcelled selectivity 4 2 ultra small EK SM servos greater 4 pounds output thrust 5 Receiver servos equipped 3 pin Deans gold plated plugs 6 Adjustable tension control sticks full line brochure write EK-PRODUCTS INC 3322 Stovall St Irving Texas 75061 USA Distributors dealers contact us new merchandising program 1977 EK-Praac1s InC 779 EK-Products . . e1978 7 Openers continued page 4 early-SOs before transistor popped up model mag article replace second relay tube Lorenz two-tuber Nicads 10 years future Rockwood used servos al fliers doomed escape ments years Single-channel fliers protested 3-channel Babcock would kill hobby because permit ted plane loopand kind money So almost 20 years average RCer flew single-tube receiver whether gas hard tube enough make strong men scream month fondly recall Lorenz gas-tube receiver Berkeleys Aerotrol similarone several Lo renz designs small light about size match box Like Good Brothers preceeded it op erated on-off carrier later guys would find sorts ways tricky levers motor-driven beep boxes etc manage crude proportional control playing way carrier turned off RK-6 1 tube idled about 13 15 mils signal dropping say 2 mil relay adjusted operate between say 11 13 mils Vibration drove relay arm atures crazy such current settings planes shivered shimmied ways happy hunting ground didnt get escapements would Lorenz receiver stood out like lighthouse Ed gilded lilly little two-tuber break-throughcan imagine day sophisticated equipment two-tuber first-tube cur rent change dropped signal trig gering second tubewhich idled mere 2/10 mil sotriggering walloping rise 25 mils Such cur rent change allowed reliable relay ad justments Moreover two-tuber op erated couple pencells bat teries plus tiny hearing aid battery B Ed magician demonstrated two-tuber basement test panel two meters tube Watching work simultane ously far out experience early fifties RK-61s became short supply Hivac gas tube imported England gas tubes sensitive way attain sensitivity put prolonged idle didnt wear out process attempted flight Sunday baked kitchen ovenJerry Stoloff baked 28 hours before worked properly Saturday despaired field after checking gas-tube receiver 20-foot range Along came two small boys said Mr youve got cook tube Connect booster battery go lunch come back will work gosh did way become expert 1950s Carl Goldberg marking 50th year association hobby has achieved fame own time Magazines will telling about Carl manufacturer and/or Carl modeler may recall us Sail plane Zipper perhaps Valy krie indoor models diamond-fuselage rubber jobs twin-pushers still big may note pop-up tail dethermalizer has attended modern Na tionals Lord knows what else Carl knew always quiet listener talker always thinker weighing attentively word ever said him Always polite Always humble gentle man end less quest perfection can say deserved success prefer say could have happened nicer guy Letters Editor continued page 7 after have scanned old copies Aeroplane Flight Popular Aviation Model Airplane News Flying Aces Cross Cockade Now its gone thing black debris has given up charred OX-S couple Whirlwinds couple Le Rhones some sooty remains un identifiable metal parts board members Aerospace Museum International Aerospace Hall Fame shared building have resolved start museums once again attended emergency meeting held few days after fire Col Owen Clark Col Ed Carey respec tive directors announced new Mu seums would start national solicitation contributions both monetary dis play Clark will DC week seek assistance National Museum Needless say museum loss great scale modelers sig nificant resource think Model Aviation might assist some way spreading word concentrated effort rebuild museums would think modelers particularly scale devotees owe debt gratitude museums act inspiration tangible research re source San Diego Museum nations third largest terms aircraft colateral displays temporary address both Aerospace Museum International Aerospace Hall Fame Room 203 Casa del Prado Balboa Park San Diego California 92101 enclosed photo taken morn ing after fire looking what used entrance Spirit St Louis replica stood immediately side front door Bill Noonan San Diego CA Model Aviation has advised Bill Noonan will act liaison matter stand ready publish information about program restore invaluable facility Also watch future columns Gretz Wischers Takes Exception year ago read article Hal deBolt about high speed flight radio controlled model airplanes Recently read another article Mr deBolt Bet ter Propellers Formula Ones both instances indicated top speed formula airplane 145 150 mph take exception 1976 time trials Sepul veda Basin Los Angeles took fastest time 1669 miles per hour standard formula racer 1977 took fastest time again 18755 av erage way time 20062 mph may some sort record forumula will agree Mr deBolt however importance propeller 1st series runs through traps 1977 using Prather series #2 prop 8 ane prev ious race best time 16469 mph changing Rev Up 9 eased average speed 226 mph 18755 mph am saying race should use large high pitch prop because will lose speed ac celleration turns Mr deBolt article speed does believe formula type air craft could ever take world record 212 mph Russians may right can think few modifica tions LR IA flying would increase speed whole lot First would install retractable landCon tinued page 84 58 Model Aviation Letters Editor continued page 58 EYE HOOKS 436T050 N 1 1 14 fr\~1f4 X 9 MUSIC WIRE NOTCH CLEAR WOOD IX3 36TO 50 LONG plauded three articles Foam Techniques Despite architectural background found difficult follow explanation foam cutter Could Bill Max draw finished foam cutter 1/4 j NOTCH SIDE VIEW CAL BOTH ENDS us Model viation readers Thanks David Strickland Oil City PA ing gear remove canopy streamline cockpit area reduce size left cheek cowl minimum air intake remove completely possible Id reduce flying sur face area including tail limits controlability would use light weight radio battery pack remove en gine control servo anything else non essential reduce weight 5 lb minimum weight would apply Id set up engine run 70% nitro methane use relatively large high pitched propeller doing wouldnt add 25 mph 18755 mph Id hold wing rubber bands George maybe Ill think get time Someday Gene W Sidwell Hollywood CA DeBolt did write about high-speed flight RC models assume Gene thinking account Houston Speed Trails Maynard Hill re ported April 77 MA DeBolt did write Form props May issue year know what timing set up during flights Gene describes Timing world record speed attempts highly complex matter witness Dick Webers account Austrian glider 2742 mph speed record flight page 73 December 1977 Hubert Bitner Jrs Setting RC Helicopter Speed Rec ord February 1978 MA errors can accumulate stop watch timing both ends traps can tens miles per hour split second inac curacyhence FAIs tough requirements order record accp ted evident Sidwell knows make Form 1 go really fast straight line Perhaps can enthuse fellow Californians setting up Houston-type Speed Trials No Sooner Said Done RC Technique/Myers continued page 15 Off stage down aisle Vince Hurd RS systems Ive heard rumors RS dropping out consumer market Vince true No way George Weve worked too hard get give up now advertising budget shifted other magazines order get some mil itary contracts target drones see factory keeps turning out systems before Vince showed two super-transmitters marked RS-XRS has controls optimized pattern flying other opti mized pylon racing primary dif ference pylon racing model has product review product review product review Tutor Patterred after original Nobler famout stuit model ever flown Top Flites 45-in 35-powered Control line aero batic trainer has wing area 410 sq flying weight 2 2/2 lbs Special construction feature assures easily built light-weight accurate warp-free wing 0-tube leading edgesaid 20 25% stronger conventional designs Structure balsa maple motor mounts preshaped flaps elevator One-piece plywood re-en forced fuselage precision machined ac curate cut-outs wing motor mounts stabilizer Die-cut parts have printed numbers identification Kit includes nylon elevator flap horns nylon motor mount spacers formed landing tail gear tank mountings nylon belicrank adjustable lead-out guide full-size plans Top Flite Models Inc 1901 N Narragansett Ave Chicago 1160639 Bill Evans Max Lester must ap- product review product review product review dual-rate switch changes both eleva tor aileron race pilot can have additional control takeoff landing plane going slow controls less effective aero-dynam ically pattern transmitter has dualrate aileron sports roll ton RS servos now enjoy motors tested before installation servo factory-aging process assembled servo Pro-Line super transmitter de scribed April issue Pro-Line also showing no frills Cadet series de signed compete bottom price range buddy-box systems turn off based fact can used two sets same manu facturer sometimes same series World Engines showed way Expert Mark II makes sense case students transmitter sends RF students plane instructors transmitter provides control modulation slave mode As result student now flies own plane buddy system instead yours Good thinking Thats about transmitter sub ject Next month Ill discussing GelCells George M Myers 70 Froehlich Farm Road Hicksville NY 11801 RC Scale Wischers continued page 24 sponsors anxious rekindle terest AMA Scale its ob vious Scale has tremendous spectator appeal AMA Precision Scale presents ultimate challenge excite ment ways scale aircraft uti lizes some persons important qualities instance what scale buff has endless dreams about building flying new project imagi nation work research docu 84 Model Aviation DONT IRMELE USE BALSARITE Balsarte sinks deep wood melts & intermixes adhesive iron-on coverings heat IAmaAdU applied No trapped air permanent ad hesion no fuel creep fillets cinch use Monokote So fim o Cove e Ga sa te sa must CQVERITE IL