G eorg eM Myers Update Georges redundant radio experiment has now packaged airborne system iess wiring mess space etc eft overaii view system protruding case two receiver antennas colied two switch harnesses battery pack just servos four servo-iead receptacies Photo right iooks inside case PC board Error Switch has moved top cover bottom cover has mined hot soldering iron accommodate SR-i 70 battery pack powers just receivers Error Switch pius two prototype Airtronics receivers CORRECTION response recommenda tion made May 1987 column Futaba says Conquest PCM narrow-band time recommendation based result testing sample very good apologize misleading Made USA someone ask RC systems made US Id have say Ace R/C Inc Cannon Royal Electronics remain show flag time far know hear Ace R/C Inc almost ready release narrow-band AM FM versions excellent Silver Seven systems Bill Cannon has already shown Super Micro narrow-band system WRAM Show heard Toledo show Pete Waters District VII VP Frequency Committee mem ber proprietor Kraft Midwest will soon produce true 1991 system Pete certainly has talent knowledge job wonder hell find time havent heard anything Tech R/C EK Given tariff changes brouglfl Japan ese computer chip dumping dropping dollar-to-yen ratio price disadvantage American manufacturers have labored long may soon disappear next generation RC systems will aimost certainly computer-controlled make use surface-mounted components same time get away present designs use resistive potentiometers point man/machine interface As example what might done have hand piezo-electric film Talk it acts like microphone Press it acts like force-measuring transducer can visualize thing replacing whole stick assembly transmitter Trim pots too Some PCM sets use keypad enter servo span direction offset trim control curves etc gets rid resistive potentiometers too other evolutions will lower produc tion cots once proper 1991 designs devel oped producing compact elements improving quality control Im impatient see comes out Its like watching good football game Nobody has whispered about look interesting new servos appear costdriver today price plastic parts Reduce number plastic parts cost goes down think may see some new push-pull linear output designs perhaps using worm nut get around problems usual rack pinion Nobody has looked LIM linear induction motor offers possibility full-digital servo feedback potentiometer computer printer uses LIM position print wheeland know fast accu rate operation has Samarium-cobalt motors seem like good prospect use servos torque possible smaller package pancake motor whole field stepper motors look could get rid feedback potentiometer servos would move whole new level reliability Batteries continuing problemyou know about modern nickel-cadmium battery marvel reliability like remember button cells Sixties least half system failures properly maintained RC systems still trace back batteries Perhaps new rechargeable lithium batteries some version organic non metallic battery will provide us lighter vibration-resistant power source Meanwhile redundant battery schemes abound 2 x 5 package redundant flight packs designed friend George Steiner read ily available Ace K/C Inc others Jomar Ram Some people use very possibly should Back 1984 West German firm Multi plex Modelltechnik GmbH released Royal mc system features plug-in ROMs read memories allow programmable transmitter serve airplanes Heli copters also contains two switch-selectable battery packs long flights long days flying transmitter also switchable tween PCM PWM pulse-width modula tionthe kind existing FM systems use Bo T Dryselius ORBOAB Lidgatau 20 51758 Soilna Sweden agent Multiplex Sweden sent info pack back 1985 am now getting around thanking him Multiplex sold USA Beemer RC West Distributors Scottsdale AZ 85260 42 Model Aviation What has done can done again Im told Futaba showed PCM transmitter Toledo contained several built-in ROMs store trims servo throws servo directions mixing etc several airplanes think narrowband receivers will relatively expensive will make sense have universal transmitter several flight packs will make sense transmitter has switchable synthesized RF generation Back August 1982 issue Model Aviation page 28 sketched dream about new RC system included narrow-band receiver synthesized RE systems monitor built transmitter Well have used years now thanks good friend Jack Albrecht pushed Kraft Systems producing famous Channel Max systems fortunate enough get synthe sized systems available know good cant believe no will ever produce another After have put expanded scale voltmeter stopwatch tachometer transmitter what else can sell time visualized three-position transmitter switch moved Off/Monitor On/Monitor Off Transmitter never reached market no reason couldnt have happened made prototype building RC receiver fixed crystal audio amp speaker Silver Seven transmitter satisfied myself could hear interference channel before turning transmitter wanted Actually can get same information simply turning airplanes receiver first people will because old days servo could drive itself stalled condition would melt down servo amplifier problem has fixed 20 years tradition transmitter first persists produces number accidental shoot-downs year redundant-radio concept awaiting its chance Redundant radio means two transmitters different RC channels radiating single antenna transmitter two receivers airplane receiver independently drives servos aircraft can two servos control function concept works Im told Calvin Orr will have system Type Accepted use Futaba transmitters using 72 MHz 50 MHz Ham license Cant143 Coming next month What can flysingle channel new Cannon mini-receiver KPS-1 8 servo SR-50 battery pack will boggle mind sure ZNDUDWZtZRD 7550 Say Gab,eI Road cadero CA 93422 455-1717 CALIFORNIAPO Box 1695 MODEL IMPORTS Garden Grove CA 92642 r NEW F ram makers HEAD LOCK 1 STAIM.ESS STEEL HEAD LOCK glow plug connector strength & long corrosion free life 2FIELD REPLACEABLE 12 AH Nicad 3Built FULLY AUTOJWIATIC ON/OFF SWITCH prevent short circuits pocket tool box 4Charger LED INDICATOR available IfAD-LIIL--$2495 1-EAD-LITE W/cHARGER-$32 95 available write direct add 51 00 52 00 outside USi MODEL PRODUCTS CORP PO BOX 100 ALLAMUCHY NEW JERSEY 07820 July1987 43 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS$495 DISTRIBUTED BY Models Easy Never Flew Well Skyboy Schweizer shown Skykid ultimate freef light rubber powered flight secret success sturdy foam models Bi-Matic Bentoms ex clusive 21 gear box preassembled included model An ideal first flying model kids well old reliable serious free flight modelers Available hobby stores coast coast tHEADLITE Features US Pat4221452 os PB Toledo/Blakeslee Continued page 139 SR Batteries Larry Sribmck SR first offer modelers high capacity nickel-cadmium battery packs just about size shape Larry says business booming what demand electric cars fliers Electrics Larry can still supply airborne transmitter needs popular radios several arent popular Best write Larry Box 287 Bellport NY 11713 Ask flyer can check out packs available Top Flite Models Scott Christensen featuring RC Hand-Launch entry called Wristocrat showing personal plane has flaps Scott says flies very well sales have brisk Also continuing move well TFs Antares straight-wing Sailplane Two-Meter Metric Also shown new dark red MonoKote color should especially good covering bottoms wings Magazines US magazine folks hand no doubt familiar Id like tell about some British magazines less wellknown over Ron Moulton Argus Specialist Publications Ltd manned booth chock-full magazines company puts out two interest Sailplaners Radio Control Models Electronics usually abbreviated RCM&E Radio Modeller Both mags have separate columns Thermal Slope Soaring RCM&E has Dave Jones doing Thermal column Charles Gardiner Slope Radio Mod eller features well-known George Stringwell Thermal Tom Speakman writing about Slope Soaring Ron offering Toledo Show subscriptions spe cial rates failing just little magazines available through AMA HQ check out Supply & Service catalog should have received 1987 AMA membership other British publisher hand Tony Stephenson Traplet Publications Ltd Tonys magazine RCModel World has out about two years theyve sure learned find lot interesting material Silent Flight correspondent friend Sean Walbank White Sheet club hill fame magazine also features Power Scale Slope column written Ray Jones Tony now exporting magazine bulk California mailing us Yanks makes subscribing very simple Im sure Tony will give special Toledo Show price $15 six issues $30 12 tell him just heard about offer Write Tony Traplet Distribution 1635 Wade Dr Paso Robles CA 93446 Toledo very busy three days apologies Ive missed anyone coverage Sailplane offerings Radio Technique/Myers Continued page 43 required channels look things like 200-lb B-29 saw RC Video Maga zine Vol 8 hope carries redundant radio setup hobby needs safety can get am still doing thing redundant radio recently purchased electronic switch Calvin OrrCustom Electronics PO Box 1332 Alta Loma CA 91701 Since housed oversize plastic box decided see could get two receivers battery pack switch thereby eliminating mess dangling wires buddy Jack Albrecht Service Manager Airtronics 11 Autry Irvine CA 92718 provided pair prototype receivers set match Kraft Channel Max transmitter bought some SRl 70 battery packs another buddy Larry Sribnick SR Batteries 21 South Country Rd Beilport NY 11713 After little plastic minirg hot soldering iron everything fit nicely elec tronic switch now mounts top box cut some holes let out switchs trim pots things want access adjustment anyway shown first two photos head column am using Lanier Javelin test bed unit bought Bubba Spivey 1986 Nats has modified slightly function tail-dragger because fly mostly off grass Powered OS 28H considerably milder Bubbas 40-powered missile am using RC38 RC56 because channels Jack Albrecht provided Jack pretty clever channel would complete 31M triplet RC47 looks like wont use before about 1995 ever Nobody has complained about hogging two chan nelsyet crystal ball tired Lets see much comes true Next month Ill talk about some minimal Electric RC have grandson has too younger siblings feel safe about giving him glow engine George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Glow Plugs/Werber Continued page 45 plug laboratory see could satisfy curiosity about what going inside little troublemaker first thing rule out possibility plug leaker tested subjecting couple hundred psi compressed air plug passed soap bubble test con nected battery looked what call normal glow Comparing ap pearance faulty plug filament new plug old filament looked just little duller maybe shade darkernot discernibly bad naked eye Obvi ously exacting comparative anal ysis called using high quality PRECISION MODEL PRODUCTS Made U S fl-i 75-B TT-200-B TT-225-B 1T-226B TT-250-B TT-25 1-B TT-275-B TT-276-B TT-300-B TT-301 -B BARSTOCK RETAILAPPROX PART NO SIZE EWT 1-3/4 2 2-1/4 2-1/4FAI 2-112 2-1/2FAI 2-3/4 2-3/4 FAI . 3 3FAI $1295 1395 1495 1695 1695 1695 1995 2195 2395 2595 095 OZ 1000z 155 OZ i450Z iaaoz 166 OZ 215 OZ 2000Z 256 OZ 247 OZ 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $3 00 Per Spinner PROP NuT ADAPTORS PART NOSIZE TT-140-A1/4-28 TT-610-A6x 10mm TT-710-A7x1Omm fl-Si 6-A 5/16-24 TT-810-A 8x1Omm TT-825-A 8x 125mm fl-375-A 3/624 fl-125-A lOx 1 25mm $395 395 395 395 395 395 495 495 061 OZ 063 OZ 062 OZ 076 OZ 076 OZ 075 OZ 117 OZ 115 OZ 3 Piece Set Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 July1987 143 RETAIL APPROX PRICE WT
Edition: Model Aviation - 1987/07
Page Numbers: 42, 43, 143
G eorg eM Myers Update Georges redundant radio experiment has now packaged airborne system iess wiring mess space etc eft overaii view system protruding case two receiver antennas colied two switch harnesses battery pack just servos four servo-iead receptacies Photo right iooks inside case PC board Error Switch has moved top cover bottom cover has mined hot soldering iron accommodate SR-i 70 battery pack powers just receivers Error Switch pius two prototype Airtronics receivers CORRECTION response recommenda tion made May 1987 column Futaba says Conquest PCM narrow-band time recommendation based result testing sample very good apologize misleading Made USA someone ask RC systems made US Id have say Ace R/C Inc Cannon Royal Electronics remain show flag time far know hear Ace R/C Inc almost ready release narrow-band AM FM versions excellent Silver Seven systems Bill Cannon has already shown Super Micro narrow-band system WRAM Show heard Toledo show Pete Waters District VII VP Frequency Committee mem ber proprietor Kraft Midwest will soon produce true 1991 system Pete certainly has talent knowledge job wonder hell find time havent heard anything Tech R/C EK Given tariff changes brouglfl Japan ese computer chip dumping dropping dollar-to-yen ratio price disadvantage American manufacturers have labored long may soon disappear next generation RC systems will aimost certainly computer-controlled make use surface-mounted components same time get away present designs use resistive potentiometers point man/machine interface As example what might done have hand piezo-electric film Talk it acts like microphone Press it acts like force-measuring transducer can visualize thing replacing whole stick assembly transmitter Trim pots too Some PCM sets use keypad enter servo span direction offset trim control curves etc gets rid resistive potentiometers too other evolutions will lower produc tion cots once proper 1991 designs devel oped producing compact elements improving quality control Im impatient see comes out Its like watching good football game Nobody has whispered about look interesting new servos appear costdriver today price plastic parts Reduce number plastic parts cost goes down think may see some new push-pull linear output designs perhaps using worm nut get around problems usual rack pinion Nobody has looked LIM linear induction motor offers possibility full-digital servo feedback potentiometer computer printer uses LIM position print wheeland know fast accu rate operation has Samarium-cobalt motors seem like good prospect use servos torque possible smaller package pancake motor whole field stepper motors look could get rid feedback potentiometer servos would move whole new level reliability Batteries continuing problemyou know about modern nickel-cadmium battery marvel reliability like remember button cells Sixties least half system failures properly maintained RC systems still trace back batteries Perhaps new rechargeable lithium batteries some version organic non metallic battery will provide us lighter vibration-resistant power source Meanwhile redundant battery schemes abound 2 x 5 package redundant flight packs designed friend George Steiner read ily available Ace K/C Inc others Jomar Ram Some people use very possibly should Back 1984 West German firm Multi plex Modelltechnik GmbH released Royal mc system features plug-in ROMs read memories allow programmable transmitter serve airplanes Heli copters also contains two switch-selectable battery packs long flights long days flying transmitter also switchable tween PCM PWM pulse-width modula tionthe kind existing FM systems use Bo T Dryselius ORBOAB Lidgatau 20 51758 Soilna Sweden agent Multiplex Sweden sent info pack back 1985 am now getting around thanking him Multiplex sold USA Beemer RC West Distributors Scottsdale AZ 85260 42 Model Aviation What has done can done again Im told Futaba showed PCM transmitter Toledo contained several built-in ROMs store trims servo throws servo directions mixing etc several airplanes think narrowband receivers will relatively expensive will make sense have universal transmitter several flight packs will make sense transmitter has switchable synthesized RF generation Back August 1982 issue Model Aviation page 28 sketched dream about new RC system included narrow-band receiver synthesized RE systems monitor built transmitter Well have used years now thanks good friend Jack Albrecht pushed Kraft Systems producing famous Channel Max systems fortunate enough get synthe sized systems available know good cant believe no will ever produce another After have put expanded scale voltmeter stopwatch tachometer transmitter what else can sell time visualized three-position transmitter switch moved Off/Monitor On/Monitor Off Transmitter never reached market no reason couldnt have happened made prototype building RC receiver fixed crystal audio amp speaker Silver Seven transmitter satisfied myself could hear interference channel before turning transmitter wanted Actually can get same information simply turning airplanes receiver first people will because old days servo could drive itself stalled condition would melt down servo amplifier problem has fixed 20 years tradition transmitter first persists produces number accidental shoot-downs year redundant-radio concept awaiting its chance Redundant radio means two transmitters different RC channels radiating single antenna transmitter two receivers airplane receiver independently drives servos aircraft can two servos control function concept works Im told Calvin Orr will have system Type Accepted use Futaba transmitters using 72 MHz 50 MHz Ham license Cant143 Coming next month What can flysingle channel new Cannon mini-receiver KPS-1 8 servo SR-50 battery pack will boggle mind sure ZNDUDWZtZRD 7550 Say Gab,eI Road cadero CA 93422 455-1717 CALIFORNIAPO Box 1695 MODEL IMPORTS Garden Grove CA 92642 r NEW F ram makers HEAD LOCK 1 STAIM.ESS STEEL HEAD LOCK glow plug connector strength & long corrosion free life 2FIELD REPLACEABLE 12 AH Nicad 3Built FULLY AUTOJWIATIC ON/OFF SWITCH prevent short circuits pocket tool box 4Charger LED INDICATOR available IfAD-LIIL--$2495 1-EAD-LITE W/cHARGER-$32 95 available write direct add 51 00 52 00 outside USi MODEL PRODUCTS CORP PO BOX 100 ALLAMUCHY NEW JERSEY 07820 July1987 43 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS$495 DISTRIBUTED BY Models Easy Never Flew Well Skyboy Schweizer shown Skykid ultimate freef light rubber powered flight secret success sturdy foam models Bi-Matic Bentoms ex clusive 21 gear box preassembled included model An ideal first flying model kids well old reliable serious free flight modelers Available hobby stores coast coast tHEADLITE Features US Pat4221452 os PB Toledo/Blakeslee Continued page 139 SR Batteries Larry Sribmck SR first offer modelers high capacity nickel-cadmium battery packs just about size shape Larry says business booming what demand electric cars fliers Electrics Larry can still supply airborne transmitter needs popular radios several arent popular Best write Larry Box 287 Bellport NY 11713 Ask flyer can check out packs available Top Flite Models Scott Christensen featuring RC Hand-Launch entry called Wristocrat showing personal plane has flaps Scott says flies very well sales have brisk Also continuing move well TFs Antares straight-wing Sailplane Two-Meter Metric Also shown new dark red MonoKote color should especially good covering bottoms wings Magazines US magazine folks hand no doubt familiar Id like tell about some British magazines less wellknown over Ron Moulton Argus Specialist Publications Ltd manned booth chock-full magazines company puts out two interest Sailplaners Radio Control Models Electronics usually abbreviated RCM&E Radio Modeller Both mags have separate columns Thermal Slope Soaring RCM&E has Dave Jones doing Thermal column Charles Gardiner Slope Radio Mod eller features well-known George Stringwell Thermal Tom Speakman writing about Slope Soaring Ron offering Toledo Show subscriptions spe cial rates failing just little magazines available through AMA HQ check out Supply & Service catalog should have received 1987 AMA membership other British publisher hand Tony Stephenson Traplet Publications Ltd Tonys magazine RCModel World has out about two years theyve sure learned find lot interesting material Silent Flight correspondent friend Sean Walbank White Sheet club hill fame magazine also features Power Scale Slope column written Ray Jones Tony now exporting magazine bulk California mailing us Yanks makes subscribing very simple Im sure Tony will give special Toledo Show price $15 six issues $30 12 tell him just heard about offer Write Tony Traplet Distribution 1635 Wade Dr Paso Robles CA 93446 Toledo very busy three days apologies Ive missed anyone coverage Sailplane offerings Radio Technique/Myers Continued page 43 required channels look things like 200-lb B-29 saw RC Video Maga zine Vol 8 hope carries redundant radio setup hobby needs safety can get am still doing thing redundant radio recently purchased electronic switch Calvin OrrCustom Electronics PO Box 1332 Alta Loma CA 91701 Since housed oversize plastic box decided see could get two receivers battery pack switch thereby eliminating mess dangling wires buddy Jack Albrecht Service Manager Airtronics 11 Autry Irvine CA 92718 provided pair prototype receivers set match Kraft Channel Max transmitter bought some SRl 70 battery packs another buddy Larry Sribnick SR Batteries 21 South Country Rd Beilport NY 11713 After little plastic minirg hot soldering iron everything fit nicely elec tronic switch now mounts top box cut some holes let out switchs trim pots things want access adjustment anyway shown first two photos head column am using Lanier Javelin test bed unit bought Bubba Spivey 1986 Nats has modified slightly function tail-dragger because fly mostly off grass Powered OS 28H considerably milder Bubbas 40-powered missile am using RC38 RC56 because channels Jack Albrecht provided Jack pretty clever channel would complete 31M triplet RC47 looks like wont use before about 1995 ever Nobody has complained about hogging two chan nelsyet crystal ball tired Lets see much comes true Next month Ill talk about some minimal Electric RC have grandson has too younger siblings feel safe about giving him glow engine George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Glow Plugs/Werber Continued page 45 plug laboratory see could satisfy curiosity about what going inside little troublemaker first thing rule out possibility plug leaker tested subjecting couple hundred psi compressed air plug passed soap bubble test con nected battery looked what call normal glow Comparing ap pearance faulty plug filament new plug old filament looked just little duller maybe shade darkernot discernibly bad naked eye Obvi ously exacting comparative anal ysis called using high quality PRECISION MODEL PRODUCTS Made U S fl-i 75-B TT-200-B TT-225-B 1T-226B TT-250-B TT-25 1-B TT-275-B TT-276-B TT-300-B TT-301 -B BARSTOCK RETAILAPPROX PART NO SIZE EWT 1-3/4 2 2-1/4 2-1/4FAI 2-112 2-1/2FAI 2-3/4 2-3/4 FAI . 3 3FAI $1295 1395 1495 1695 1695 1695 1995 2195 2395 2595 095 OZ 1000z 155 OZ i450Z iaaoz 166 OZ 215 OZ 2000Z 256 OZ 247 OZ 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $3 00 Per Spinner PROP NuT ADAPTORS PART NOSIZE TT-140-A1/4-28 TT-610-A6x 10mm TT-710-A7x1Omm fl-Si 6-A 5/16-24 TT-810-A 8x1Omm TT-825-A 8x 125mm fl-375-A 3/624 fl-125-A lOx 1 25mm $395 395 395 395 395 395 495 495 061 OZ 063 OZ 062 OZ 076 OZ 076 OZ 075 OZ 117 OZ 115 OZ 3 Piece Set Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 July1987 143 RETAIL APPROX PRICE WT
Edition: Model Aviation - 1987/07
Page Numbers: 42, 43, 143
G eorg eM Myers Update Georges redundant radio experiment has now packaged airborne system iess wiring mess space etc eft overaii view system protruding case two receiver antennas colied two switch harnesses battery pack just servos four servo-iead receptacies Photo right iooks inside case PC board Error Switch has moved top cover bottom cover has mined hot soldering iron accommodate SR-i 70 battery pack powers just receivers Error Switch pius two prototype Airtronics receivers CORRECTION response recommenda tion made May 1987 column Futaba says Conquest PCM narrow-band time recommendation based result testing sample very good apologize misleading Made USA someone ask RC systems made US Id have say Ace R/C Inc Cannon Royal Electronics remain show flag time far know hear Ace R/C Inc almost ready release narrow-band AM FM versions excellent Silver Seven systems Bill Cannon has already shown Super Micro narrow-band system WRAM Show heard Toledo show Pete Waters District VII VP Frequency Committee mem ber proprietor Kraft Midwest will soon produce true 1991 system Pete certainly has talent knowledge job wonder hell find time havent heard anything Tech R/C EK Given tariff changes brouglfl Japan ese computer chip dumping dropping dollar-to-yen ratio price disadvantage American manufacturers have labored long may soon disappear next generation RC systems will aimost certainly computer-controlled make use surface-mounted components same time get away present designs use resistive potentiometers point man/machine interface As example what might done have hand piezo-electric film Talk it acts like microphone Press it acts like force-measuring transducer can visualize thing replacing whole stick assembly transmitter Trim pots too Some PCM sets use keypad enter servo span direction offset trim control curves etc gets rid resistive potentiometers too other evolutions will lower produc tion cots once proper 1991 designs devel oped producing compact elements improving quality control Im impatient see comes out Its like watching good football game Nobody has whispered about look interesting new servos appear costdriver today price plastic parts Reduce number plastic parts cost goes down think may see some new push-pull linear output designs perhaps using worm nut get around problems usual rack pinion Nobody has looked LIM linear induction motor offers possibility full-digital servo feedback potentiometer computer printer uses LIM position print wheeland know fast accu rate operation has Samarium-cobalt motors seem like good prospect use servos torque possible smaller package pancake motor whole field stepper motors look could get rid feedback potentiometer servos would move whole new level reliability Batteries continuing problemyou know about modern nickel-cadmium battery marvel reliability like remember button cells Sixties least half system failures properly maintained RC systems still trace back batteries Perhaps new rechargeable lithium batteries some version organic non metallic battery will provide us lighter vibration-resistant power source Meanwhile redundant battery schemes abound 2 x 5 package redundant flight packs designed friend George Steiner read ily available Ace K/C Inc others Jomar Ram Some people use very possibly should Back 1984 West German firm Multi plex Modelltechnik GmbH released Royal mc system features plug-in ROMs read memories allow programmable transmitter serve airplanes Heli copters also contains two switch-selectable battery packs long flights long days flying transmitter also switchable tween PCM PWM pulse-width modula tionthe kind existing FM systems use Bo T Dryselius ORBOAB Lidgatau 20 51758 Soilna Sweden agent Multiplex Sweden sent info pack back 1985 am now getting around thanking him Multiplex sold USA Beemer RC West Distributors Scottsdale AZ 85260 42 Model Aviation What has done can done again Im told Futaba showed PCM transmitter Toledo contained several built-in ROMs store trims servo throws servo directions mixing etc several airplanes think narrowband receivers will relatively expensive will make sense have universal transmitter several flight packs will make sense transmitter has switchable synthesized RF generation Back August 1982 issue Model Aviation page 28 sketched dream about new RC system included narrow-band receiver synthesized RE systems monitor built transmitter Well have used years now thanks good friend Jack Albrecht pushed Kraft Systems producing famous Channel Max systems fortunate enough get synthe sized systems available know good cant believe no will ever produce another After have put expanded scale voltmeter stopwatch tachometer transmitter what else can sell time visualized three-position transmitter switch moved Off/Monitor On/Monitor Off Transmitter never reached market no reason couldnt have happened made prototype building RC receiver fixed crystal audio amp speaker Silver Seven transmitter satisfied myself could hear interference channel before turning transmitter wanted Actually can get same information simply turning airplanes receiver first people will because old days servo could drive itself stalled condition would melt down servo amplifier problem has fixed 20 years tradition transmitter first persists produces number accidental shoot-downs year redundant-radio concept awaiting its chance Redundant radio means two transmitters different RC channels radiating single antenna transmitter two receivers airplane receiver independently drives servos aircraft can two servos control function concept works Im told Calvin Orr will have system Type Accepted use Futaba transmitters using 72 MHz 50 MHz Ham license Cant143 Coming next month What can flysingle channel new Cannon mini-receiver KPS-1 8 servo SR-50 battery pack will boggle mind sure ZNDUDWZtZRD 7550 Say Gab,eI Road cadero CA 93422 455-1717 CALIFORNIAPO Box 1695 MODEL IMPORTS Garden Grove CA 92642 r NEW F ram makers HEAD LOCK 1 STAIM.ESS STEEL HEAD LOCK glow plug connector strength & long corrosion free life 2FIELD REPLACEABLE 12 AH Nicad 3Built FULLY AUTOJWIATIC ON/OFF SWITCH prevent short circuits pocket tool box 4Charger LED INDICATOR available IfAD-LIIL--$2495 1-EAD-LITE W/cHARGER-$32 95 available write direct add 51 00 52 00 outside USi MODEL PRODUCTS CORP PO BOX 100 ALLAMUCHY NEW JERSEY 07820 July1987 43 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS$495 DISTRIBUTED BY Models Easy Never Flew Well Skyboy Schweizer shown Skykid ultimate freef light rubber powered flight secret success sturdy foam models Bi-Matic Bentoms ex clusive 21 gear box preassembled included model An ideal first flying model kids well old reliable serious free flight modelers Available hobby stores coast coast tHEADLITE Features US Pat4221452 os PB Toledo/Blakeslee Continued page 139 SR Batteries Larry Sribmck SR first offer modelers high capacity nickel-cadmium battery packs just about size shape Larry says business booming what demand electric cars fliers Electrics Larry can still supply airborne transmitter needs popular radios several arent popular Best write Larry Box 287 Bellport NY 11713 Ask flyer can check out packs available Top Flite Models Scott Christensen featuring RC Hand-Launch entry called Wristocrat showing personal plane has flaps Scott says flies very well sales have brisk Also continuing move well TFs Antares straight-wing Sailplane Two-Meter Metric Also shown new dark red MonoKote color should especially good covering bottoms wings Magazines US magazine folks hand no doubt familiar Id like tell about some British magazines less wellknown over Ron Moulton Argus Specialist Publications Ltd manned booth chock-full magazines company puts out two interest Sailplaners Radio Control Models Electronics usually abbreviated RCM&E Radio Modeller Both mags have separate columns Thermal Slope Soaring RCM&E has Dave Jones doing Thermal column Charles Gardiner Slope Radio Mod eller features well-known George Stringwell Thermal Tom Speakman writing about Slope Soaring Ron offering Toledo Show subscriptions spe cial rates failing just little magazines available through AMA HQ check out Supply & Service catalog should have received 1987 AMA membership other British publisher hand Tony Stephenson Traplet Publications Ltd Tonys magazine RCModel World has out about two years theyve sure learned find lot interesting material Silent Flight correspondent friend Sean Walbank White Sheet club hill fame magazine also features Power Scale Slope column written Ray Jones Tony now exporting magazine bulk California mailing us Yanks makes subscribing very simple Im sure Tony will give special Toledo Show price $15 six issues $30 12 tell him just heard about offer Write Tony Traplet Distribution 1635 Wade Dr Paso Robles CA 93446 Toledo very busy three days apologies Ive missed anyone coverage Sailplane offerings Radio Technique/Myers Continued page 43 required channels look things like 200-lb B-29 saw RC Video Maga zine Vol 8 hope carries redundant radio setup hobby needs safety can get am still doing thing redundant radio recently purchased electronic switch Calvin OrrCustom Electronics PO Box 1332 Alta Loma CA 91701 Since housed oversize plastic box decided see could get two receivers battery pack switch thereby eliminating mess dangling wires buddy Jack Albrecht Service Manager Airtronics 11 Autry Irvine CA 92718 provided pair prototype receivers set match Kraft Channel Max transmitter bought some SRl 70 battery packs another buddy Larry Sribnick SR Batteries 21 South Country Rd Beilport NY 11713 After little plastic minirg hot soldering iron everything fit nicely elec tronic switch now mounts top box cut some holes let out switchs trim pots things want access adjustment anyway shown first two photos head column am using Lanier Javelin test bed unit bought Bubba Spivey 1986 Nats has modified slightly function tail-dragger because fly mostly off grass Powered OS 28H considerably milder Bubbas 40-powered missile am using RC38 RC56 because channels Jack Albrecht provided Jack pretty clever channel would complete 31M triplet RC47 looks like wont use before about 1995 ever Nobody has complained about hogging two chan nelsyet crystal ball tired Lets see much comes true Next month Ill talk about some minimal Electric RC have grandson has too younger siblings feel safe about giving him glow engine George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Glow Plugs/Werber Continued page 45 plug laboratory see could satisfy curiosity about what going inside little troublemaker first thing rule out possibility plug leaker tested subjecting couple hundred psi compressed air plug passed soap bubble test con nected battery looked what call normal glow Comparing ap pearance faulty plug filament new plug old filament looked just little duller maybe shade darkernot discernibly bad naked eye Obvi ously exacting comparative anal ysis called using high quality PRECISION MODEL PRODUCTS Made U S fl-i 75-B TT-200-B TT-225-B 1T-226B TT-250-B TT-25 1-B TT-275-B TT-276-B TT-300-B TT-301 -B BARSTOCK RETAILAPPROX PART NO SIZE EWT 1-3/4 2 2-1/4 2-1/4FAI 2-112 2-1/2FAI 2-3/4 2-3/4 FAI . 3 3FAI $1295 1395 1495 1695 1695 1695 1995 2195 2395 2595 095 OZ 1000z 155 OZ i450Z iaaoz 166 OZ 215 OZ 2000Z 256 OZ 247 OZ 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $3 00 Per Spinner PROP NuT ADAPTORS PART NOSIZE TT-140-A1/4-28 TT-610-A6x 10mm TT-710-A7x1Omm fl-Si 6-A 5/16-24 TT-810-A 8x1Omm TT-825-A 8x 125mm fl-375-A 3/624 fl-125-A lOx 1 25mm $395 395 395 395 395 395 495 495 061 OZ 063 OZ 062 OZ 076 OZ 076 OZ 075 OZ 117 OZ 115 OZ 3 Piece Set Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 July1987 143 RETAIL APPROX PRICE WT