Radio Technique George M Myers GO ANYWHERE RC flying done will find people having trouble starting engines Clar ence Lee writes beautiful column RC Modeler explains both theory practice small engines circle friends fair sample column widely read understood leaves wondering starting problems common Upon closer examination find its usually glow plug isnt working properly starting battery isnt connected exhausted battery Over years have seen read about lot ways evaluate starting system oldest remember light bulb used Jean Pailet Control Line Contest Board chairman Fig 1 setup flip switch test before attempting start engine light bulb glows have continuous circuit presumably through working glow plug will amazed see simple device will detect dirty glow-plug clip isnt making contact burned-out plug off position saves exhausting battery event glow plug clip develops short circuit Bruce Underwood sent letter de scribing merits Hotbox substitutes meter lightbulb uses Nicad D cell starting battery boxes whole thing aluminum minibox Fig 2 Bruce used Calectro 0-5 amp meter GE Permacel On-Off switch bana na plugs jacks line air plane miniature insulated alligator clips attachment airplane whole works housed 2 X 3 X 5 minibox charging done using mod ified slot-car power pack set 80 milli amps about 16 hours Bruce sent along polaroid pictures Hotbox couldnt use because image too small writing back picture came through front mention help others avoid prob lem criticize Bruces efforts much appreciated rate meter tells light bulb current drawn normal setup ready start higher normal plug flooded have short circuit somewhere current below normal battery weak something circuit causing high resistance could dirty clips fail ing plug Kraft makes meter hous ing fit carbon-zinc dry batteries Part 200-119 200-118 about $7 serves same purpose Bruces rechargeable Hotbox myself have using metered starting battery least 15 years others did before because copied idea field kit saw somewhere Good ideas deserve repetition point worth mentioning winter season folks may have forgotten batteries give up less stored energy cold means Nicads will need charged frequently wish maintain summer performance addition glow plug will become demanding volt difference between Nicad nomi nal 125 volts carbon-zinc 15 volts can difference between hard easy starting Another thought glow plugs same Aside long short plugs idle-bar RC plain ended plugs various heat ranges available hot plug has thermal resistance between coil shell does normal plug usually accomplished extra insulation around center post cold plug has continued page 81 START OFFTO GLOW PLUG TEST #222 BULB 15 VOLT STARTING BATTERY EVEREADY NO 6 OR EQUIVALENT TO ENGINE FIGURE 2 0-5 AMPS DC 125 VOLT STARTING BATTERY 0 SIZE GE PERMACELL OR EQUIVALENT OFF YON TO GLOW PLUG METERED STARTING BATTERY 10 Model Aviation Metered starting battery 2-1/4 x 2-1/4 x 4 Minlbox adapters Cox heads other glow plugs factorssuch booster lead length cold nicads affect voltage plug FIGURE 1 STARTING BATTERY WITH CONTINUITY TESTER TO ENGINE Radio Technique/Myers continued page 10 less resistance therefore will cool lower average temperature during engine run engine hard start try obtain hotter plug will also improve idling Overall thing separates easy starting hard starting knowledge know starting battery has adequate charge glow plug good condition connections clean tight wire battery plug heavy enough gauge carry current dropping too much volt age will get start last point deserves some comment three-foot length 20-gauge lamp cord will drop volt trying light Cox plug 3 amps Thats enough convert cold day miserable session gashed fingers alcohol fires Use copper can14 gauge goodand keep leads short best way see information want column let know about 70 Froehlich Farm Rd Hicks ville NY 11801 Editors Note January issue schematic appeared LED devices schematic correct readers ran trouble using 82ohm resistor 82K belongs colors 82K Grey Red Orange Tesla/Sosic continued naae 16 early radio research work satis factory man Teslas caliber got high 30000 cycles wanted much credits coil rapid development radio radar radio control electronic automation drive motivated strong desire keep creative mind occupied quoted statement worst criminals world voluntarily idle statement aptly describes prime motivations average RC modeler Editors Note recent release Jet Propulsion Laboratory Goldstone Calif making powerful transmissions electronic power have ever made possibility has trigued scientists ever since Teslas experi ments Until now concept consid ered inefficient Engineers transmitting 30 kilowatts DC power receiving station mile away believed efficiency 65% may achieved JPL experiments point way transmission energy through spaceas solar collectors space WIN ONE OF THESE 25 GREAT PRIZES! 1st Prize Thayer & Chandler Model E airbrush & compressor kit worth $106 2nd Prize Sullivan deluxe starter & 12v gel cell worth $6490 3rd Prize Dremel shop model kit 371 worth $4995 4th Prize Exacto kit 87 worth $2995 5th Prize AHM heat gun worth $2495 Purchase roll Coverite send us instruction sheet name address printed backside Send sheets wish BUT TO BE ELIGIBLE FOR THE DRAWING entries must postmarked no later Febru ary 28th 1976 Send entries Coverite Dept MAM 2779 Philmont Ave Hunting don Valley Pa 19006 0O 9E1___ JJiJ 2JJ LLLJ LJLJWJ iJ 2JJWLi_______ OF VISTA LABS 7023 D Canoga Ave oga Park Ca 91303 1 ELECTRIC FLIGHT SYSTEM Featuring HYTORK 48 MOTOR & PLANETARY GEAR UNIT Complete flying weight 21/2 ozwilI power Models 25 50 wingspan weighing up 10 oz Send 25 Catalog showing com plete line Electric Flight Equipment Accessories VI-lOl System $1950 Hytork 48 Prop Instruction Book $900 Fast Chargers $1450 $2950 See Model Dealer order Direct add 10% Postage Handling Calif Residents also add 6% Sales Tax send Check MO No CODs Hobby Dealers send Information March 1976 81 6th 10th PRIZES ONE ROLL OF CAMOUFLAGE WORTH $995 Famous WW German lozenge pattern silkscreened 4 authentic colors Lightweight Super Coverite IWo scales & 2 11th 15th PRIZES ONE ROLL OF PERMAGLOSS WORTH $890 Lightweight Super Coverite 4 coats PermaGloss paint honded its upper surface non-painters its Cadillac coverings Wont scrafch sag shatter 16th 20th PRIZES ONE ROLL OF LIGHTWEIGHT SUPER WORTH $725 New lightweight Super now 33A % lighter lNeighs less painted silk costs less goes quicker & easier Its ever popular knock down trees covering 21st 25th PRIZES ONE ROLL OF SILKSPUN WORTH $675 unique covering looks like tissue hut log times stronger other covering except own Super
Edition: Model Aviation - 1976/03
Page Numbers: 10, 81
Radio Technique George M Myers GO ANYWHERE RC flying done will find people having trouble starting engines Clar ence Lee writes beautiful column RC Modeler explains both theory practice small engines circle friends fair sample column widely read understood leaves wondering starting problems common Upon closer examination find its usually glow plug isnt working properly starting battery isnt connected exhausted battery Over years have seen read about lot ways evaluate starting system oldest remember light bulb used Jean Pailet Control Line Contest Board chairman Fig 1 setup flip switch test before attempting start engine light bulb glows have continuous circuit presumably through working glow plug will amazed see simple device will detect dirty glow-plug clip isnt making contact burned-out plug off position saves exhausting battery event glow plug clip develops short circuit Bruce Underwood sent letter de scribing merits Hotbox substitutes meter lightbulb uses Nicad D cell starting battery boxes whole thing aluminum minibox Fig 2 Bruce used Calectro 0-5 amp meter GE Permacel On-Off switch bana na plugs jacks line air plane miniature insulated alligator clips attachment airplane whole works housed 2 X 3 X 5 minibox charging done using mod ified slot-car power pack set 80 milli amps about 16 hours Bruce sent along polaroid pictures Hotbox couldnt use because image too small writing back picture came through front mention help others avoid prob lem criticize Bruces efforts much appreciated rate meter tells light bulb current drawn normal setup ready start higher normal plug flooded have short circuit somewhere current below normal battery weak something circuit causing high resistance could dirty clips fail ing plug Kraft makes meter hous ing fit carbon-zinc dry batteries Part 200-119 200-118 about $7 serves same purpose Bruces rechargeable Hotbox myself have using metered starting battery least 15 years others did before because copied idea field kit saw somewhere Good ideas deserve repetition point worth mentioning winter season folks may have forgotten batteries give up less stored energy cold means Nicads will need charged frequently wish maintain summer performance addition glow plug will become demanding volt difference between Nicad nomi nal 125 volts carbon-zinc 15 volts can difference between hard easy starting Another thought glow plugs same Aside long short plugs idle-bar RC plain ended plugs various heat ranges available hot plug has thermal resistance between coil shell does normal plug usually accomplished extra insulation around center post cold plug has continued page 81 START OFFTO GLOW PLUG TEST #222 BULB 15 VOLT STARTING BATTERY EVEREADY NO 6 OR EQUIVALENT TO ENGINE FIGURE 2 0-5 AMPS DC 125 VOLT STARTING BATTERY 0 SIZE GE PERMACELL OR EQUIVALENT OFF YON TO GLOW PLUG METERED STARTING BATTERY 10 Model Aviation Metered starting battery 2-1/4 x 2-1/4 x 4 Minlbox adapters Cox heads other glow plugs factorssuch booster lead length cold nicads affect voltage plug FIGURE 1 STARTING BATTERY WITH CONTINUITY TESTER TO ENGINE Radio Technique/Myers continued page 10 less resistance therefore will cool lower average temperature during engine run engine hard start try obtain hotter plug will also improve idling Overall thing separates easy starting hard starting knowledge know starting battery has adequate charge glow plug good condition connections clean tight wire battery plug heavy enough gauge carry current dropping too much volt age will get start last point deserves some comment three-foot length 20-gauge lamp cord will drop volt trying light Cox plug 3 amps Thats enough convert cold day miserable session gashed fingers alcohol fires Use copper can14 gauge goodand keep leads short best way see information want column let know about 70 Froehlich Farm Rd Hicks ville NY 11801 Editors Note January issue schematic appeared LED devices schematic correct readers ran trouble using 82ohm resistor 82K belongs colors 82K Grey Red Orange Tesla/Sosic continued naae 16 early radio research work satis factory man Teslas caliber got high 30000 cycles wanted much credits coil rapid development radio radar radio control electronic automation drive motivated strong desire keep creative mind occupied quoted statement worst criminals world voluntarily idle statement aptly describes prime motivations average RC modeler Editors Note recent release Jet Propulsion Laboratory Goldstone Calif making powerful transmissions electronic power have ever made possibility has trigued scientists ever since Teslas experi ments Until now concept consid ered inefficient Engineers transmitting 30 kilowatts DC power receiving station mile away believed efficiency 65% may achieved JPL experiments point way transmission energy through spaceas solar collectors space WIN ONE OF THESE 25 GREAT PRIZES! 1st Prize Thayer & Chandler Model E airbrush & compressor kit worth $106 2nd Prize Sullivan deluxe starter & 12v gel cell worth $6490 3rd Prize Dremel shop model kit 371 worth $4995 4th Prize Exacto kit 87 worth $2995 5th Prize AHM heat gun worth $2495 Purchase roll Coverite send us instruction sheet name address printed backside Send sheets wish BUT TO BE ELIGIBLE FOR THE DRAWING entries must postmarked no later Febru ary 28th 1976 Send entries Coverite Dept MAM 2779 Philmont Ave Hunting don Valley Pa 19006 0O 9E1___ JJiJ 2JJ LLLJ LJLJWJ iJ 2JJWLi_______ OF VISTA LABS 7023 D Canoga Ave oga Park Ca 91303 1 ELECTRIC FLIGHT SYSTEM Featuring HYTORK 48 MOTOR & PLANETARY GEAR UNIT Complete flying weight 21/2 ozwilI power Models 25 50 wingspan weighing up 10 oz Send 25 Catalog showing com plete line Electric Flight Equipment Accessories VI-lOl System $1950 Hytork 48 Prop Instruction Book $900 Fast Chargers $1450 $2950 See Model Dealer order Direct add 10% Postage Handling Calif Residents also add 6% Sales Tax send Check MO No CODs Hobby Dealers send Information March 1976 81 6th 10th PRIZES ONE ROLL OF CAMOUFLAGE WORTH $995 Famous WW German lozenge pattern silkscreened 4 authentic colors Lightweight Super Coverite IWo scales & 2 11th 15th PRIZES ONE ROLL OF PERMAGLOSS WORTH $890 Lightweight Super Coverite 4 coats PermaGloss paint honded its upper surface non-painters its Cadillac coverings Wont scrafch sag shatter 16th 20th PRIZES ONE ROLL OF LIGHTWEIGHT SUPER WORTH $725 New lightweight Super now 33A % lighter lNeighs less painted silk costs less goes quicker & easier Its ever popular knock down trees covering 21st 25th PRIZES ONE ROLL OF SILKSPUN WORTH $675 unique covering looks like tissue hut log times stronger other covering except own Super