RADIO CONTROL ELECTRICS 11 U ri k1 W4iU'gL-l m 1 IE I THIS MONTH WELL COVER Electric Connection Service additional MaxCim information info potential symposium tape rapid maturing Electric some motor/prop/battery basics President Pete George just-formed St Louis Chargers Electric club wrote tell new organization invite interested get touch can reach Pete 2127 Arsenal St Louis MO 63118 Tel 314 664-6613 new club does yet have home field members also members other non-E clubs have permit fly local park Pete hopes promote E-flying area co-sponsoring activity some other clubs As reminder columns Electric Connection Service designed hook up other nearby Electric activity Just write Ill get info request upcoming column Last months column mentioned new MaxCim brushless motors controllers since written Ive received some follow-up info Tom Cimato chief modeler MaxCim motors available two versions measure about 1 3/ diameter 2/2 long weight 75 ounces Since no brushes no protruding brush holders add above dimensions As rough guideline very close physical size economy 550 can motors dramatically exceed performance capability motor shaft 3/is diameter MaxCim has matching prop adapter and/or gear drives available separately associated MaxCim brushless controller measures about 08 x 15 August1995 59 MODEL ELECTRONICS PLUS TURBO 10 MOTOR PERFORMANCE 60/10 Gears arid Sonic-Tronics 13 X 7 Folder 250 200 150 S z w 100 C S 50 0 012 455 RPM X 1000 GRAPH 2 ULATED POWER INPUT 1RPM RELATIONSHIP DERIVED FROM THE DATA DISPLAYED IN GRAPH 1 Mike Stewarts Dynaflite Spitfire has Astro cobalt 90 36 SCRCs Span 81 inches weighs 145 pounds MODEL ELECTRONICS PLUS TURBO 10 MOTOR PERFORMANCE 60/10 Gears Sonic-Tronics 13 X 7 Folder 27 VOLTS 18 0 03 C C, I-J 0 39 00 050100150200 Data Points NOTE DISREGARD BUMP NEAR BEGINNING OF CURRENT CURVE DUE STARTUP COGGING GRAPH AL AUTOMATICALLY ACQUIRED MOTOR/PROP DATA Don Belforts 1A-scale Cub weighs 12 pounds Geared Astro 60 turning 16 x 12 32 1500s 7-9 minutes x 23 weighs three ounces As two configurations mentioned above simply internal factory wiring option resulting either WYE DELTA version same motor WYE intended use 10-20 cells DELTA 6-12 cells Both have rated power output 300 watts 600-watt peak short term rating well Maximum RPM given 30000 MaxCim Motors 57 Hawthorne Dr Orchard Park NY 141271958 Tel 716 662-5651 Larry Sribnick SR Batteries tells ever since KRC video tape 94 Electric Fly came out hes getting inquiries questioning availability tape covering 94 KRC Symposium ran because KRC meet tape contains brief excerpts day-long symposium has sparked interest Larry tallying inquiries interest grows large enough warrant hell put own tape production Im hoping does come about because Symposium tremendous amount information offer 12 speakers covering kinds Electric topics plus topics general modeling interest Give consideration add name Larrys interest list day definitely would want myself Contact Larry Box 287 Bellport NY 11713 Tel 516 286-0079 Occasionally get request speak local club meeting course preparing such presentation Ive reflecting about Electric overall about mere two decades plus its existence Just Electric began little fuzzy argumentative about 1972 Thats reworked toy motor homemade gears special tiny radio large superlight tissuecovered model totally inappropriate batteries first experienced ElectricFUNSCALE PT1 9 DYNAFLITE PT-19 WILL GIVE YOU TRAINER LIKE PERFORMANCE IN GIANT SCALE KIT CONSTRUCTION IS ALL WOOD WITH PLASTIC COWL THERE IS FIBERGLASS COWL OPTION AVAILABLE DIRECT FROM DYNAFLITE ON 120 PERFORMANCE IS REALISTIC FROM TAKE OFF TO LANDINGS SPAN89 IN AREA 119896 SQ IN WEIGHT 115 TO 13 LBS POWER 1204 STROKE & UP PO BOX 1011 San Marcos CA 92079 Phone 619 744-9605 1 FAX 619 744-7923 Call write FREE Color Catalog 60 Model Aviation ducted Sig Wonder Bill Griggs Canastota NY has aDucted Wonder flight following bungee-assisted launch get single Astro 15 cobalt turning both fanson step flies can flown Electric powered sink next time out wasand continues beall up Electric thing clear Electric has come long way just two decades Im sure similar growth other aspect aeromodeling except possibly radio itself Twenty years ago struggle get Electricpowered model through air now view flies can flown Electric Well. almost anything something could never have imagined during first sinking flight twenty-some years ago Nor would have inclined write words decade ago five years ago Now very capable Electric motors other products market capable modelers using above whim wishful someday thinking part its reality seen walking flightline KRC meet fact last two three meets anything goes Electric point has driven home very hard Eight- twelve-pound Scale models have become routine modelers flying high-performance FAI like models straight-up accelerating climbs AULD Up Last Down fliers well past hour-power mark local modeler Tony Fiores three-year-old 22-pound 1A-scale PICA Mustang others have infringed last wet bastion giants Its true can still fly longer wet its matter time feel till lament goes away too Remember took just two decades go just barely flies current demonstrated outlook Im satisfied last Electric shortfall involves energy storage Batteries heavy relatively speaking tank glow fuel contains lot energy comparable weight batteries progress being made believe battery technology will soon emerge may very well obsolete wet power models lawn mowers cars . knows what else SANYO 1700 SCRC INDIVIDUAL CELLS SANYO 1400 SCR INDIVIDUAL CELLS $300 EA SANYO N1000 SCR INDIVDUAL CELLS $350 EA SANYO N800 AR INDIVIDUAL CELLS $350 EA SANYO N600 INDIVIDUAL CELLS $350 EA SANYO RECHARGEABLE AA INDIVIDUAL CELLS Gear Door Cycler put retractdoorsequenc ing like P-51 Mus g jets Install tang & other aircraft includ Y connector retract channel Controls gear door servos time re tract switch used up ordown geardoors open torafew seconds close again Delaytime isadjustablefrom 1-9 seconds 15x15x3/4 1/2 sz $3995 $150 EA Backer Best way insure reliable power model Use 2 packs Runs main packthen switchesto back up pack Works stan dard 4 cell 5 cell Gel-Cell packs Battery packs can different capacity like 1200 & 600 Solid state design uses MOSFET transistors add own switch har nesses wiring 15x15x3/4 Weighs 8 oz $4995 GLITCH Buster Mini-Max Throttle Optically isolate 6 chan-The microprocessor-con nels use aseparate bat-trolled super-small MINI tery pack servoMAX teatures high-rate no power Totally eliminatesadjustment auto-setup soft glitching caused heavystart brake throttle-guard duty servos long leadswontstart armed stick can use 4 5 6 cellsin position motor-off fail servo side tor extrasafe extensive glitch fil powerand speed Requires installation otyourown radio andtersottware Designed tori --- imps lbt amps peauf servo leads Compatible PCM radios Used RenoIncludes servo connectorandUSconnectors Measures Racers NASA tool 1 5x1 5x3/4 8 ox $4495ml 5x5 ht 1 oxIntroductory price $7995 22483 Mission Hills La Ysrha Linda CA 92587 Info 714-692-1393-$300 Shipping & Handling per order Orders 80t1-845-8978Credit Cards accep fed August1995 61 F IL S F E S latest versions local hobby shop send stamped #10 envelope full info RAM 09BATTERY BACKER redundant batt syst up 60 size model.. $3995 RAM 11LOW BATTERY ALARM audio visual 48V 96V2495 RAM 12LOW FUEL LIGHT glo fuel monitor visible flight. 1995 RAM 17LOST PLANE FINDER up 80 DB 10 ft ANY radio1995 RAM 18BIG AIRPLANE RF DE-GLITHER SYSTEM replaces 10 chokes895 RAM 22SIMPLE CYCLER discharges 48V & 96V baIt up 600 MA1995 RAM 25BIG PLANE BATTERY BACKER 10 amp cap w/2 switch harnesses5995 RAM 26BIG BATTERY CYCLER discharges 48V baIt up 4000 MA 2495 RAM 49IGNITER 800 MA board driver/starter 20 21 engine 4995 RAM 50IGNITER 1300 MA board driver/starter 35 up engine4995 RAM 62SERVO FAIL SAFE adj safe point y waterproofable 2495 unavailable locally send check money order full credit card info cost tern plus $400 $500 foreignl immediate shipment Include full address u PS Sorry no COO m 229A E Rollins Rd d Lake Beach IL 60073 SANYO 1700 SCRC MATCHED INDIVIDUAL CELLS$550 EA $450 EA Battery think will day wet engines will have hard time keeping up Electric thats needed rapidly rechargeable high-current-density cells watt-hours per ounce consumer level since big powerful motors already reality will mean no excuses no fields lost because noise extrapolation never having heard field lost because quiet Beginners sometimes experienced E modelers can have some confusion misunderstanding about motor battery prop operation see incoming mail flightline Some thoughts guidelines discussion above its fair think motor battery Electric fuel tankfilled charging emptied feeds motor/prop combination battery capacity tank size expressed Amp-hours rather fluid ounces wet-fuel tank Taken literally expression capacity physical description long battery will deliver given number amps example 14 Amp-hour pack will deliver nominal 14 amps hour 14 amps 1Ao hour six minutes until goes dry Its easy imagine other current-time combinations capacity rating also describes amount charge needed fill battery pack although actual practice takes little extra top offdue some electrochemical inefficiency Note above number cells pack does matter long have same Ampere-hour rating connected series standard way wiring cells purposes So seven-cell 14 Ah pack has same capacity 21 cell 14 Ah pack both will deliver 28 Amps three minutes course latter pack has three times cell count has three times total available energy later Astro Announces its New Digital Peak Detecting Battery Chargers Astro proudly announces five new digital micro-processor controlled peak detecting nicad battery chargers Models 114D115D 116D chargers designed 05 size models using up 8 cells model 114D AC/DC charger designed R/C cars model 115D AC/DC charger has adj table current can charge nicad battery 100 4000 mahr designed planes boats model 116D 12VDC version AC/DC Model 115D Models hOD hiD designed 05 40 size models can charge up 18 cells deluxe chargers fea ture two line digital LCD display indicates nicad voltage charge current time charge Milliamp-hours charge Model hOD works 12VDC Model hiD works both hiOVAC 12VDC chargers protected against reversed inputs short circuit outputs Model Cells 12VDC liOVAC Trickle Charge Trickle limit Fast Charge Fast limit Ammeter Voltmeter Stopwatch Mahr Meter Retail Price 114Dhl5D116DhODhiD 1-81-81-81-181-18 Yes Yes Yes Yes Yes Yes Yes No No Yes 400ma 400ma 400ma 400ma 400ma 5hrs 5hrs Shrs 5 hrs 5hrs 4 h/2A 1-5A 2-8A 1-5A 1-5A 45mm 45 mm 45 miD 45 mm 45 mm No Yes Yes Yes Yes No No No Yes Yes No No No Yes Yes No No No Yes Yes $8995 $10995 $8995 $15995 $19995 Astro Flight Inc 13311 Beach Ave Marina Del Rey CA 902 62 Model Aviation tric motors turn props make models go just wet engines wound rubber motors takes power turn prop fly airplane power derived stored energy charged motor battery liquid fuel twisted rubber cases energy stores always physically limited corresponding time limit long given power level prop rpm can maintained Power input Electric motors expressed wattsthe arithmetic multiplication motor voltage motor current Neglecting moment system speed control battery voltage may viewed motor voltage sum cell voltages As guideline operational battery voltage often considered 1 1 volts per cell times number cells Electric installations using nickel-cadmium cells Motor current same current flowing cells simple motor/battery system power input motor total voltage times current equals 11 x # cells x current amps motor current 20 amps seven-cell pack input power 11 x 7 x 20 about 154 watts Assuming prop used above appropriately selected motor model power actually delivered prop move air move model may typically about 70% above input number Power transfer perfect some power loss due system inefficiencies example numbers above power delivered prop about 108 watts missing lost power about 154108 atts appears motor heat get feel imagine holding lit 50-watt bulb Now know motors get hot example numbers just about what might experience some 550 economy can motors 7 cells turning 8 x 4 props Speaking very roughly motors require no input power prop 1 da nixe waight mnxt motor-gearbox system available anner bly weight approximately 7- -d can pr duce aver 1/2 hp 10 calm eapeox nay did witnana xl onotratixon Pete Pa 94 perfnnmanc -j Kopaki Model Aviation could climb nearly veOai -iiu lull dil Lll way up flUfli MLtJl tlllptane Newn May9S getting motor ruxa xl up 17 mm eth enoagh power left taxi back Jot Rankin Model Airplane Newn July95 Power nutpat durahnn can tailored model type tlyinglll SPECIAL LIMITED SALE 1 ea Turbo 10 motor cboloe 1 en Superbon 601 ratio t en Ftt-35 Digital motor controller wfth 14G wine coonectorn $tgtttttt S&fl Catalog $300 tree w/purchane Call annintance mxtor type gear ratio etc placing order MODEL ELECTRONICS COAR 30078274596500 -6th NWFAX 296-782-91 99 VISASeattle WA 98117MASTERCARD exactly true since takes some power overcome brush friction air drag armature bearing loss etc reality typical unpropped motor will take few amps run number about same no matter number cells provided cell count appropriate given motor However prop mounted input current rises dramatically now becomes very much dependent applied voltage Since input power multiplication motor voltage current can see increasing voltage causes rapid power increase since current goes up too can seen curves motor voltage current rpm shown actual data particular product typifies behavior Electric power systems graphs illustrate several other facts too rpm fairly well tracks motor voltage over much measured curve fair say rpm directly related voltageapproximately extent its related motor losses outside scope discussion Its different story current Motor current tends increase rapidly voltage rpm power curve result multiplying voltage current really climbs increasing rpmjust little less rpm can mean lot actual power Its common flightline experience find big difference model behavior what seems like rather small change rpm true power source rather fundamental principle has nothing motor brand prop brand gearing on Future columns will expand ideas help understand better clean quiet omni-applicable Electric worksfor fun Please send SASE letter youd like reply happy quiet landings everyoneno matter big small Electric st1995 63 TURBO 10 MOTORS Ce ENERGY COMPRESSION TECHNOLOGY 6 14 cello depending no rextar OUR NEWEST MOTOR FOR FREE-FLIGHT OR RC Same dimensions IMP-30 35-watt st motor chnology .IUAAA 4 cell operation Flies 200300 sq wing area airplanes14rA4\K\ TROLL-35 Motor includes prep adaptor capacItor & mounting hardware $1095 Pleauuat02uopusraoe/vanduna Ia yuu dial
Edition: Model Aviation - 1995/08
Page Numbers: 59, 60, 61, 62, 63
RADIO CONTROL ELECTRICS 11 U ri k1 W4iU'gL-l m 1 IE I THIS MONTH WELL COVER Electric Connection Service additional MaxCim information info potential symposium tape rapid maturing Electric some motor/prop/battery basics President Pete George just-formed St Louis Chargers Electric club wrote tell new organization invite interested get touch can reach Pete 2127 Arsenal St Louis MO 63118 Tel 314 664-6613 new club does yet have home field members also members other non-E clubs have permit fly local park Pete hopes promote E-flying area co-sponsoring activity some other clubs As reminder columns Electric Connection Service designed hook up other nearby Electric activity Just write Ill get info request upcoming column Last months column mentioned new MaxCim brushless motors controllers since written Ive received some follow-up info Tom Cimato chief modeler MaxCim motors available two versions measure about 1 3/ diameter 2/2 long weight 75 ounces Since no brushes no protruding brush holders add above dimensions As rough guideline very close physical size economy 550 can motors dramatically exceed performance capability motor shaft 3/is diameter MaxCim has matching prop adapter and/or gear drives available separately associated MaxCim brushless controller measures about 08 x 15 August1995 59 MODEL ELECTRONICS PLUS TURBO 10 MOTOR PERFORMANCE 60/10 Gears arid Sonic-Tronics 13 X 7 Folder 250 200 150 S z w 100 C S 50 0 012 455 RPM X 1000 GRAPH 2 ULATED POWER INPUT 1RPM RELATIONSHIP DERIVED FROM THE DATA DISPLAYED IN GRAPH 1 Mike Stewarts Dynaflite Spitfire has Astro cobalt 90 36 SCRCs Span 81 inches weighs 145 pounds MODEL ELECTRONICS PLUS TURBO 10 MOTOR PERFORMANCE 60/10 Gears Sonic-Tronics 13 X 7 Folder 27 VOLTS 18 0 03 C C, I-J 0 39 00 050100150200 Data Points NOTE DISREGARD BUMP NEAR BEGINNING OF CURRENT CURVE DUE STARTUP COGGING GRAPH AL AUTOMATICALLY ACQUIRED MOTOR/PROP DATA Don Belforts 1A-scale Cub weighs 12 pounds Geared Astro 60 turning 16 x 12 32 1500s 7-9 minutes x 23 weighs three ounces As two configurations mentioned above simply internal factory wiring option resulting either WYE DELTA version same motor WYE intended use 10-20 cells DELTA 6-12 cells Both have rated power output 300 watts 600-watt peak short term rating well Maximum RPM given 30000 MaxCim Motors 57 Hawthorne Dr Orchard Park NY 141271958 Tel 716 662-5651 Larry Sribnick SR Batteries tells ever since KRC video tape 94 Electric Fly came out hes getting inquiries questioning availability tape covering 94 KRC Symposium ran because KRC meet tape contains brief excerpts day-long symposium has sparked interest Larry tallying inquiries interest grows large enough warrant hell put own tape production Im hoping does come about because Symposium tremendous amount information offer 12 speakers covering kinds Electric topics plus topics general modeling interest Give consideration add name Larrys interest list day definitely would want myself Contact Larry Box 287 Bellport NY 11713 Tel 516 286-0079 Occasionally get request speak local club meeting course preparing such presentation Ive reflecting about Electric overall about mere two decades plus its existence Just Electric began little fuzzy argumentative about 1972 Thats reworked toy motor homemade gears special tiny radio large superlight tissuecovered model totally inappropriate batteries first experienced ElectricFUNSCALE PT1 9 DYNAFLITE PT-19 WILL GIVE YOU TRAINER LIKE PERFORMANCE IN GIANT SCALE KIT CONSTRUCTION IS ALL WOOD WITH PLASTIC COWL THERE IS FIBERGLASS COWL OPTION AVAILABLE DIRECT FROM DYNAFLITE ON 120 PERFORMANCE IS REALISTIC FROM TAKE OFF TO LANDINGS SPAN89 IN AREA 119896 SQ IN WEIGHT 115 TO 13 LBS POWER 1204 STROKE & UP PO BOX 1011 San Marcos CA 92079 Phone 619 744-9605 1 FAX 619 744-7923 Call write FREE Color Catalog 60 Model Aviation ducted Sig Wonder Bill Griggs Canastota NY has aDucted Wonder flight following bungee-assisted launch get single Astro 15 cobalt turning both fanson step flies can flown Electric powered sink next time out wasand continues beall up Electric thing clear Electric has come long way just two decades Im sure similar growth other aspect aeromodeling except possibly radio itself Twenty years ago struggle get Electricpowered model through air now view flies can flown Electric Well. almost anything something could never have imagined during first sinking flight twenty-some years ago Nor would have inclined write words decade ago five years ago Now very capable Electric motors other products market capable modelers using above whim wishful someday thinking part its reality seen walking flightline KRC meet fact last two three meets anything goes Electric point has driven home very hard Eight- twelve-pound Scale models have become routine modelers flying high-performance FAI like models straight-up accelerating climbs AULD Up Last Down fliers well past hour-power mark local modeler Tony Fiores three-year-old 22-pound 1A-scale PICA Mustang others have infringed last wet bastion giants Its true can still fly longer wet its matter time feel till lament goes away too Remember took just two decades go just barely flies current demonstrated outlook Im satisfied last Electric shortfall involves energy storage Batteries heavy relatively speaking tank glow fuel contains lot energy comparable weight batteries progress being made believe battery technology will soon emerge may very well obsolete wet power models lawn mowers cars . knows what else SANYO 1700 SCRC INDIVIDUAL CELLS SANYO 1400 SCR INDIVIDUAL CELLS $300 EA SANYO N1000 SCR INDIVDUAL CELLS $350 EA SANYO N800 AR INDIVIDUAL CELLS $350 EA SANYO N600 INDIVIDUAL CELLS $350 EA SANYO RECHARGEABLE AA INDIVIDUAL CELLS Gear Door Cycler put retractdoorsequenc ing like P-51 Mus g jets Install tang & other aircraft includ Y connector retract channel Controls gear door servos time re tract switch used up ordown geardoors open torafew seconds close again Delaytime isadjustablefrom 1-9 seconds 15x15x3/4 1/2 sz $3995 $150 EA Backer Best way insure reliable power model Use 2 packs Runs main packthen switchesto back up pack Works stan dard 4 cell 5 cell Gel-Cell packs Battery packs can different capacity like 1200 & 600 Solid state design uses MOSFET transistors add own switch har nesses wiring 15x15x3/4 Weighs 8 oz $4995 GLITCH Buster Mini-Max Throttle Optically isolate 6 chan-The microprocessor-con nels use aseparate bat-trolled super-small MINI tery pack servoMAX teatures high-rate no power Totally eliminatesadjustment auto-setup soft glitching caused heavystart brake throttle-guard duty servos long leadswontstart armed stick can use 4 5 6 cellsin position motor-off fail servo side tor extrasafe extensive glitch fil powerand speed Requires installation otyourown radio andtersottware Designed tori --- imps lbt amps peauf servo leads Compatible PCM radios Used RenoIncludes servo connectorandUSconnectors Measures Racers NASA tool 1 5x1 5x3/4 8 ox $4495ml 5x5 ht 1 oxIntroductory price $7995 22483 Mission Hills La Ysrha Linda CA 92587 Info 714-692-1393-$300 Shipping & Handling per order Orders 80t1-845-8978Credit Cards accep fed August1995 61 F IL S F E S latest versions local hobby shop send stamped #10 envelope full info RAM 09BATTERY BACKER redundant batt syst up 60 size model.. $3995 RAM 11LOW BATTERY ALARM audio visual 48V 96V2495 RAM 12LOW FUEL LIGHT glo fuel monitor visible flight. 1995 RAM 17LOST PLANE FINDER up 80 DB 10 ft ANY radio1995 RAM 18BIG AIRPLANE RF DE-GLITHER SYSTEM replaces 10 chokes895 RAM 22SIMPLE CYCLER discharges 48V & 96V baIt up 600 MA1995 RAM 25BIG PLANE BATTERY BACKER 10 amp cap w/2 switch harnesses5995 RAM 26BIG BATTERY CYCLER discharges 48V baIt up 4000 MA 2495 RAM 49IGNITER 800 MA board driver/starter 20 21 engine 4995 RAM 50IGNITER 1300 MA board driver/starter 35 up engine4995 RAM 62SERVO FAIL SAFE adj safe point y waterproofable 2495 unavailable locally send check money order full credit card info cost tern plus $400 $500 foreignl immediate shipment Include full address u PS Sorry no COO m 229A E Rollins Rd d Lake Beach IL 60073 SANYO 1700 SCRC MATCHED INDIVIDUAL CELLS$550 EA $450 EA Battery think will day wet engines will have hard time keeping up Electric thats needed rapidly rechargeable high-current-density cells watt-hours per ounce consumer level since big powerful motors already reality will mean no excuses no fields lost because noise extrapolation never having heard field lost because quiet Beginners sometimes experienced E modelers can have some confusion misunderstanding about motor battery prop operation see incoming mail flightline Some thoughts guidelines discussion above its fair think motor battery Electric fuel tankfilled charging emptied feeds motor/prop combination battery capacity tank size expressed Amp-hours rather fluid ounces wet-fuel tank Taken literally expression capacity physical description long battery will deliver given number amps example 14 Amp-hour pack will deliver nominal 14 amps hour 14 amps 1Ao hour six minutes until goes dry Its easy imagine other current-time combinations capacity rating also describes amount charge needed fill battery pack although actual practice takes little extra top offdue some electrochemical inefficiency Note above number cells pack does matter long have same Ampere-hour rating connected series standard way wiring cells purposes So seven-cell 14 Ah pack has same capacity 21 cell 14 Ah pack both will deliver 28 Amps three minutes course latter pack has three times cell count has three times total available energy later Astro Announces its New Digital Peak Detecting Battery Chargers Astro proudly announces five new digital micro-processor controlled peak detecting nicad battery chargers Models 114D115D 116D chargers designed 05 size models using up 8 cells model 114D AC/DC charger designed R/C cars model 115D AC/DC charger has adj table current can charge nicad battery 100 4000 mahr designed planes boats model 116D 12VDC version AC/DC Model 115D Models hOD hiD designed 05 40 size models can charge up 18 cells deluxe chargers fea ture two line digital LCD display indicates nicad voltage charge current time charge Milliamp-hours charge Model hOD works 12VDC Model hiD works both hiOVAC 12VDC chargers protected against reversed inputs short circuit outputs Model Cells 12VDC liOVAC Trickle Charge Trickle limit Fast Charge Fast limit Ammeter Voltmeter Stopwatch Mahr Meter Retail Price 114Dhl5D116DhODhiD 1-81-81-81-181-18 Yes Yes Yes Yes Yes Yes Yes No No Yes 400ma 400ma 400ma 400ma 400ma 5hrs 5hrs Shrs 5 hrs 5hrs 4 h/2A 1-5A 2-8A 1-5A 1-5A 45mm 45 mm 45 miD 45 mm 45 mm No Yes Yes Yes Yes No No No Yes Yes No No No Yes Yes No No No Yes Yes $8995 $10995 $8995 $15995 $19995 Astro Flight Inc 13311 Beach Ave Marina Del Rey CA 902 62 Model Aviation tric motors turn props make models go just wet engines wound rubber motors takes power turn prop fly airplane power derived stored energy charged motor battery liquid fuel twisted rubber cases energy stores always physically limited corresponding time limit long given power level prop rpm can maintained Power input Electric motors expressed wattsthe arithmetic multiplication motor voltage motor current Neglecting moment system speed control battery voltage may viewed motor voltage sum cell voltages As guideline operational battery voltage often considered 1 1 volts per cell times number cells Electric installations using nickel-cadmium cells Motor current same current flowing cells simple motor/battery system power input motor total voltage times current equals 11 x # cells x current amps motor current 20 amps seven-cell pack input power 11 x 7 x 20 about 154 watts Assuming prop used above appropriately selected motor model power actually delivered prop move air move model may typically about 70% above input number Power transfer perfect some power loss due system inefficiencies example numbers above power delivered prop about 108 watts missing lost power about 154108 atts appears motor heat get feel imagine holding lit 50-watt bulb Now know motors get hot example numbers just about what might experience some 550 economy can motors 7 cells turning 8 x 4 props Speaking very roughly motors require no input power prop 1 da nixe waight mnxt motor-gearbox system available anner bly weight approximately 7- -d can pr duce aver 1/2 hp 10 calm eapeox nay did witnana xl onotratixon Pete Pa 94 perfnnmanc -j Kopaki Model Aviation could climb nearly veOai -iiu lull dil Lll way up flUfli MLtJl tlllptane Newn May9S getting motor ruxa xl up 17 mm eth enoagh power left taxi back Jot Rankin Model Airplane Newn July95 Power nutpat durahnn can tailored model type tlyinglll SPECIAL LIMITED SALE 1 ea Turbo 10 motor cboloe 1 en Superbon 601 ratio t en Ftt-35 Digital motor controller wfth 14G wine coonectorn $tgtttttt S&fl Catalog $300 tree w/purchane Call annintance mxtor type gear ratio etc placing order MODEL ELECTRONICS COAR 30078274596500 -6th NWFAX 296-782-91 99 VISASeattle WA 98117MASTERCARD exactly true since takes some power overcome brush friction air drag armature bearing loss etc reality typical unpropped motor will take few amps run number about same no matter number cells provided cell count appropriate given motor However prop mounted input current rises dramatically now becomes very much dependent applied voltage Since input power multiplication motor voltage current can see increasing voltage causes rapid power increase since current goes up too can seen curves motor voltage current rpm shown actual data particular product typifies behavior Electric power systems graphs illustrate several other facts too rpm fairly well tracks motor voltage over much measured curve fair say rpm directly related voltageapproximately extent its related motor losses outside scope discussion Its different story current Motor current tends increase rapidly voltage rpm power curve result multiplying voltage current really climbs increasing rpmjust little less rpm can mean lot actual power Its common flightline experience find big difference model behavior what seems like rather small change rpm true power source rather fundamental principle has nothing motor brand prop brand gearing on Future columns will expand ideas help understand better clean quiet omni-applicable Electric worksfor fun Please send SASE letter youd like reply happy quiet landings everyoneno matter big small Electric st1995 63 TURBO 10 MOTORS Ce ENERGY COMPRESSION TECHNOLOGY 6 14 cello depending no rextar OUR NEWEST MOTOR FOR FREE-FLIGHT OR RC Same dimensions IMP-30 35-watt st motor chnology .IUAAA 4 cell operation Flies 200300 sq wing area airplanes14rA4\K\ TROLL-35 Motor includes prep adaptor capacItor & mounting hardware $1095 Pleauuat02uopusraoe/vanduna Ia yuu dial
Edition: Model Aviation - 1995/08
Page Numbers: 59, 60, 61, 62, 63
RADIO CONTROL ELECTRICS 11 U ri k1 W4iU'gL-l m 1 IE I THIS MONTH WELL COVER Electric Connection Service additional MaxCim information info potential symposium tape rapid maturing Electric some motor/prop/battery basics President Pete George just-formed St Louis Chargers Electric club wrote tell new organization invite interested get touch can reach Pete 2127 Arsenal St Louis MO 63118 Tel 314 664-6613 new club does yet have home field members also members other non-E clubs have permit fly local park Pete hopes promote E-flying area co-sponsoring activity some other clubs As reminder columns Electric Connection Service designed hook up other nearby Electric activity Just write Ill get info request upcoming column Last months column mentioned new MaxCim brushless motors controllers since written Ive received some follow-up info Tom Cimato chief modeler MaxCim motors available two versions measure about 1 3/ diameter 2/2 long weight 75 ounces Since no brushes no protruding brush holders add above dimensions As rough guideline very close physical size economy 550 can motors dramatically exceed performance capability motor shaft 3/is diameter MaxCim has matching prop adapter and/or gear drives available separately associated MaxCim brushless controller measures about 08 x 15 August1995 59 MODEL ELECTRONICS PLUS TURBO 10 MOTOR PERFORMANCE 60/10 Gears arid Sonic-Tronics 13 X 7 Folder 250 200 150 S z w 100 C S 50 0 012 455 RPM X 1000 GRAPH 2 ULATED POWER INPUT 1RPM RELATIONSHIP DERIVED FROM THE DATA DISPLAYED IN GRAPH 1 Mike Stewarts Dynaflite Spitfire has Astro cobalt 90 36 SCRCs Span 81 inches weighs 145 pounds MODEL ELECTRONICS PLUS TURBO 10 MOTOR PERFORMANCE 60/10 Gears Sonic-Tronics 13 X 7 Folder 27 VOLTS 18 0 03 C C, I-J 0 39 00 050100150200 Data Points NOTE DISREGARD BUMP NEAR BEGINNING OF CURRENT CURVE DUE STARTUP COGGING GRAPH AL AUTOMATICALLY ACQUIRED MOTOR/PROP DATA Don Belforts 1A-scale Cub weighs 12 pounds Geared Astro 60 turning 16 x 12 32 1500s 7-9 minutes x 23 weighs three ounces As two configurations mentioned above simply internal factory wiring option resulting either WYE DELTA version same motor WYE intended use 10-20 cells DELTA 6-12 cells Both have rated power output 300 watts 600-watt peak short term rating well Maximum RPM given 30000 MaxCim Motors 57 Hawthorne Dr Orchard Park NY 141271958 Tel 716 662-5651 Larry Sribnick SR Batteries tells ever since KRC video tape 94 Electric Fly came out hes getting inquiries questioning availability tape covering 94 KRC Symposium ran because KRC meet tape contains brief excerpts day-long symposium has sparked interest Larry tallying inquiries interest grows large enough warrant hell put own tape production Im hoping does come about because Symposium tremendous amount information offer 12 speakers covering kinds Electric topics plus topics general modeling interest Give consideration add name Larrys interest list day definitely would want myself Contact Larry Box 287 Bellport NY 11713 Tel 516 286-0079 Occasionally get request speak local club meeting course preparing such presentation Ive reflecting about Electric overall about mere two decades plus its existence Just Electric began little fuzzy argumentative about 1972 Thats reworked toy motor homemade gears special tiny radio large superlight tissuecovered model totally inappropriate batteries first experienced ElectricFUNSCALE PT1 9 DYNAFLITE PT-19 WILL GIVE YOU TRAINER LIKE PERFORMANCE IN GIANT SCALE KIT CONSTRUCTION IS ALL WOOD WITH PLASTIC COWL THERE IS FIBERGLASS COWL OPTION AVAILABLE DIRECT FROM DYNAFLITE ON 120 PERFORMANCE IS REALISTIC FROM TAKE OFF TO LANDINGS SPAN89 IN AREA 119896 SQ IN WEIGHT 115 TO 13 LBS POWER 1204 STROKE & UP PO BOX 1011 San Marcos CA 92079 Phone 619 744-9605 1 FAX 619 744-7923 Call write FREE Color Catalog 60 Model Aviation ducted Sig Wonder Bill Griggs Canastota NY has aDucted Wonder flight following bungee-assisted launch get single Astro 15 cobalt turning both fanson step flies can flown Electric powered sink next time out wasand continues beall up Electric thing clear Electric has come long way just two decades Im sure similar growth other aspect aeromodeling except possibly radio itself Twenty years ago struggle get Electricpowered model through air now view flies can flown Electric Well. almost anything something could never have imagined during first sinking flight twenty-some years ago Nor would have inclined write words decade ago five years ago Now very capable Electric motors other products market capable modelers using above whim wishful someday thinking part its reality seen walking flightline KRC meet fact last two three meets anything goes Electric point has driven home very hard Eight- twelve-pound Scale models have become routine modelers flying high-performance FAI like models straight-up accelerating climbs AULD Up Last Down fliers well past hour-power mark local modeler Tony Fiores three-year-old 22-pound 1A-scale PICA Mustang others have infringed last wet bastion giants Its true can still fly longer wet its matter time feel till lament goes away too Remember took just two decades go just barely flies current demonstrated outlook Im satisfied last Electric shortfall involves energy storage Batteries heavy relatively speaking tank glow fuel contains lot energy comparable weight batteries progress being made believe battery technology will soon emerge may very well obsolete wet power models lawn mowers cars . knows what else SANYO 1700 SCRC INDIVIDUAL CELLS SANYO 1400 SCR INDIVIDUAL CELLS $300 EA SANYO N1000 SCR INDIVDUAL CELLS $350 EA SANYO N800 AR INDIVIDUAL CELLS $350 EA SANYO N600 INDIVIDUAL CELLS $350 EA SANYO RECHARGEABLE AA INDIVIDUAL CELLS Gear Door Cycler put retractdoorsequenc ing like P-51 Mus g jets Install tang & other aircraft includ Y connector retract channel Controls gear door servos time re tract switch used up ordown geardoors open torafew seconds close again Delaytime isadjustablefrom 1-9 seconds 15x15x3/4 1/2 sz $3995 $150 EA Backer Best way insure reliable power model Use 2 packs Runs main packthen switchesto back up pack Works stan dard 4 cell 5 cell Gel-Cell packs Battery packs can different capacity like 1200 & 600 Solid state design uses MOSFET transistors add own switch har nesses wiring 15x15x3/4 Weighs 8 oz $4995 GLITCH Buster Mini-Max Throttle Optically isolate 6 chan-The microprocessor-con nels use aseparate bat-trolled super-small MINI tery pack servoMAX teatures high-rate no power Totally eliminatesadjustment auto-setup soft glitching caused heavystart brake throttle-guard duty servos long leadswontstart armed stick can use 4 5 6 cellsin position motor-off fail servo side tor extrasafe extensive glitch fil powerand speed Requires installation otyourown radio andtersottware Designed tori --- imps lbt amps peauf servo leads Compatible PCM radios Used RenoIncludes servo connectorandUSconnectors Measures Racers NASA tool 1 5x1 5x3/4 8 ox $4495ml 5x5 ht 1 oxIntroductory price $7995 22483 Mission Hills La Ysrha Linda CA 92587 Info 714-692-1393-$300 Shipping & Handling per order Orders 80t1-845-8978Credit Cards accep fed August1995 61 F IL S F E S latest versions local hobby shop send stamped #10 envelope full info RAM 09BATTERY BACKER redundant batt syst up 60 size model.. $3995 RAM 11LOW BATTERY ALARM audio visual 48V 96V2495 RAM 12LOW FUEL LIGHT glo fuel monitor visible flight. 1995 RAM 17LOST PLANE FINDER up 80 DB 10 ft ANY radio1995 RAM 18BIG AIRPLANE RF DE-GLITHER SYSTEM replaces 10 chokes895 RAM 22SIMPLE CYCLER discharges 48V & 96V baIt up 600 MA1995 RAM 25BIG PLANE BATTERY BACKER 10 amp cap w/2 switch harnesses5995 RAM 26BIG BATTERY CYCLER discharges 48V baIt up 4000 MA 2495 RAM 49IGNITER 800 MA board driver/starter 20 21 engine 4995 RAM 50IGNITER 1300 MA board driver/starter 35 up engine4995 RAM 62SERVO FAIL SAFE adj safe point y waterproofable 2495 unavailable locally send check money order full credit card info cost tern plus $400 $500 foreignl immediate shipment Include full address u PS Sorry no COO m 229A E Rollins Rd d Lake Beach IL 60073 SANYO 1700 SCRC MATCHED INDIVIDUAL CELLS$550 EA $450 EA Battery think will day wet engines will have hard time keeping up Electric thats needed rapidly rechargeable high-current-density cells watt-hours per ounce consumer level since big powerful motors already reality will mean no excuses no fields lost because noise extrapolation never having heard field lost because quiet Beginners sometimes experienced E modelers can have some confusion misunderstanding about motor battery prop operation see incoming mail flightline Some thoughts guidelines discussion above its fair think motor battery Electric fuel tankfilled charging emptied feeds motor/prop combination battery capacity tank size expressed Amp-hours rather fluid ounces wet-fuel tank Taken literally expression capacity physical description long battery will deliver given number amps example 14 Amp-hour pack will deliver nominal 14 amps hour 14 amps 1Ao hour six minutes until goes dry Its easy imagine other current-time combinations capacity rating also describes amount charge needed fill battery pack although actual practice takes little extra top offdue some electrochemical inefficiency Note above number cells pack does matter long have same Ampere-hour rating connected series standard way wiring cells purposes So seven-cell 14 Ah pack has same capacity 21 cell 14 Ah pack both will deliver 28 Amps three minutes course latter pack has three times cell count has three times total available energy later Astro Announces its New Digital Peak Detecting Battery Chargers Astro proudly announces five new digital micro-processor controlled peak detecting nicad battery chargers Models 114D115D 116D chargers designed 05 size models using up 8 cells model 114D AC/DC charger designed R/C cars model 115D AC/DC charger has adj table current can charge nicad battery 100 4000 mahr designed planes boats model 116D 12VDC version AC/DC Model 115D Models hOD hiD designed 05 40 size models can charge up 18 cells deluxe chargers fea ture two line digital LCD display indicates nicad voltage charge current time charge Milliamp-hours charge Model hOD works 12VDC Model hiD works both hiOVAC 12VDC chargers protected against reversed inputs short circuit outputs Model Cells 12VDC liOVAC Trickle Charge Trickle limit Fast Charge Fast limit Ammeter Voltmeter Stopwatch Mahr Meter Retail Price 114Dhl5D116DhODhiD 1-81-81-81-181-18 Yes Yes Yes Yes Yes Yes Yes No No Yes 400ma 400ma 400ma 400ma 400ma 5hrs 5hrs Shrs 5 hrs 5hrs 4 h/2A 1-5A 2-8A 1-5A 1-5A 45mm 45 mm 45 miD 45 mm 45 mm No Yes Yes Yes Yes No No No Yes Yes No No No Yes Yes No No No Yes Yes $8995 $10995 $8995 $15995 $19995 Astro Flight Inc 13311 Beach Ave Marina Del Rey CA 902 62 Model Aviation tric motors turn props make models go just wet engines wound rubber motors takes power turn prop fly airplane power derived stored energy charged motor battery liquid fuel twisted rubber cases energy stores always physically limited corresponding time limit long given power level prop rpm can maintained Power input Electric motors expressed wattsthe arithmetic multiplication motor voltage motor current Neglecting moment system speed control battery voltage may viewed motor voltage sum cell voltages As guideline operational battery voltage often considered 1 1 volts per cell times number cells Electric installations using nickel-cadmium cells Motor current same current flowing cells simple motor/battery system power input motor total voltage times current equals 11 x # cells x current amps motor current 20 amps seven-cell pack input power 11 x 7 x 20 about 154 watts Assuming prop used above appropriately selected motor model power actually delivered prop move air move model may typically about 70% above input number Power transfer perfect some power loss due system inefficiencies example numbers above power delivered prop about 108 watts missing lost power about 154108 atts appears motor heat get feel imagine holding lit 50-watt bulb Now know motors get hot example numbers just about what might experience some 550 economy can motors 7 cells turning 8 x 4 props Speaking very roughly motors require no input power prop 1 da nixe waight mnxt motor-gearbox system available anner bly weight approximately 7- -d can pr duce aver 1/2 hp 10 calm eapeox nay did witnana xl onotratixon Pete Pa 94 perfnnmanc -j Kopaki Model Aviation could climb nearly veOai -iiu lull dil Lll way up flUfli MLtJl tlllptane Newn May9S getting motor ruxa xl up 17 mm eth enoagh power left taxi back Jot Rankin Model Airplane Newn July95 Power nutpat durahnn can tailored model type tlyinglll SPECIAL LIMITED SALE 1 ea Turbo 10 motor cboloe 1 en Superbon 601 ratio t en Ftt-35 Digital motor controller wfth 14G wine coonectorn $tgtttttt S&fl Catalog $300 tree w/purchane Call annintance mxtor type gear ratio etc placing order MODEL ELECTRONICS COAR 30078274596500 -6th NWFAX 296-782-91 99 VISASeattle WA 98117MASTERCARD exactly true since takes some power overcome brush friction air drag armature bearing loss etc reality typical unpropped motor will take few amps run number about same no matter number cells provided cell count appropriate given motor However prop mounted input current rises dramatically now becomes very much dependent applied voltage Since input power multiplication motor voltage current can see increasing voltage causes rapid power increase since current goes up too can seen curves motor voltage current rpm shown actual data particular product typifies behavior Electric power systems graphs illustrate several other facts too rpm fairly well tracks motor voltage over much measured curve fair say rpm directly related voltageapproximately extent its related motor losses outside scope discussion Its different story current Motor current tends increase rapidly voltage rpm power curve result multiplying voltage current really climbs increasing rpmjust little less rpm can mean lot actual power Its common flightline experience find big difference model behavior what seems like rather small change rpm true power source rather fundamental principle has nothing motor brand prop brand gearing on Future columns will expand ideas help understand better clean quiet omni-applicable Electric worksfor fun Please send SASE letter youd like reply happy quiet landings everyoneno matter big small Electric st1995 63 TURBO 10 MOTORS Ce ENERGY COMPRESSION TECHNOLOGY 6 14 cello depending no rextar OUR NEWEST MOTOR FOR FREE-FLIGHT OR RC Same dimensions IMP-30 35-watt st motor chnology .IUAAA 4 cell operation Flies 200300 sq wing area airplanes14rA4\K\ TROLL-35 Motor includes prep adaptor capacItor & mounting hardware $1095 Pleauuat02uopusraoe/vanduna Ia yuu dial
Edition: Model Aviation - 1995/08
Page Numbers: 59, 60, 61, 62, 63
RADIO CONTROL ELECTRICS 11 U ri k1 W4iU'gL-l m 1 IE I THIS MONTH WELL COVER Electric Connection Service additional MaxCim information info potential symposium tape rapid maturing Electric some motor/prop/battery basics President Pete George just-formed St Louis Chargers Electric club wrote tell new organization invite interested get touch can reach Pete 2127 Arsenal St Louis MO 63118 Tel 314 664-6613 new club does yet have home field members also members other non-E clubs have permit fly local park Pete hopes promote E-flying area co-sponsoring activity some other clubs As reminder columns Electric Connection Service designed hook up other nearby Electric activity Just write Ill get info request upcoming column Last months column mentioned new MaxCim brushless motors controllers since written Ive received some follow-up info Tom Cimato chief modeler MaxCim motors available two versions measure about 1 3/ diameter 2/2 long weight 75 ounces Since no brushes no protruding brush holders add above dimensions As rough guideline very close physical size economy 550 can motors dramatically exceed performance capability motor shaft 3/is diameter MaxCim has matching prop adapter and/or gear drives available separately associated MaxCim brushless controller measures about 08 x 15 August1995 59 MODEL ELECTRONICS PLUS TURBO 10 MOTOR PERFORMANCE 60/10 Gears arid Sonic-Tronics 13 X 7 Folder 250 200 150 S z w 100 C S 50 0 012 455 RPM X 1000 GRAPH 2 ULATED POWER INPUT 1RPM RELATIONSHIP DERIVED FROM THE DATA DISPLAYED IN GRAPH 1 Mike Stewarts Dynaflite Spitfire has Astro cobalt 90 36 SCRCs Span 81 inches weighs 145 pounds MODEL ELECTRONICS PLUS TURBO 10 MOTOR PERFORMANCE 60/10 Gears Sonic-Tronics 13 X 7 Folder 27 VOLTS 18 0 03 C C, I-J 0 39 00 050100150200 Data Points NOTE DISREGARD BUMP NEAR BEGINNING OF CURRENT CURVE DUE STARTUP COGGING GRAPH AL AUTOMATICALLY ACQUIRED MOTOR/PROP DATA Don Belforts 1A-scale Cub weighs 12 pounds Geared Astro 60 turning 16 x 12 32 1500s 7-9 minutes x 23 weighs three ounces As two configurations mentioned above simply internal factory wiring option resulting either WYE DELTA version same motor WYE intended use 10-20 cells DELTA 6-12 cells Both have rated power output 300 watts 600-watt peak short term rating well Maximum RPM given 30000 MaxCim Motors 57 Hawthorne Dr Orchard Park NY 141271958 Tel 716 662-5651 Larry Sribnick SR Batteries tells ever since KRC video tape 94 Electric Fly came out hes getting inquiries questioning availability tape covering 94 KRC Symposium ran because KRC meet tape contains brief excerpts day-long symposium has sparked interest Larry tallying inquiries interest grows large enough warrant hell put own tape production Im hoping does come about because Symposium tremendous amount information offer 12 speakers covering kinds Electric topics plus topics general modeling interest Give consideration add name Larrys interest list day definitely would want myself Contact Larry Box 287 Bellport NY 11713 Tel 516 286-0079 Occasionally get request speak local club meeting course preparing such presentation Ive reflecting about Electric overall about mere two decades plus its existence Just Electric began little fuzzy argumentative about 1972 Thats reworked toy motor homemade gears special tiny radio large superlight tissuecovered model totally inappropriate batteries first experienced ElectricFUNSCALE PT1 9 DYNAFLITE PT-19 WILL GIVE YOU TRAINER LIKE PERFORMANCE IN GIANT SCALE KIT CONSTRUCTION IS ALL WOOD WITH PLASTIC COWL THERE IS FIBERGLASS COWL OPTION AVAILABLE DIRECT FROM DYNAFLITE ON 120 PERFORMANCE IS REALISTIC FROM TAKE OFF TO LANDINGS SPAN89 IN AREA 119896 SQ IN WEIGHT 115 TO 13 LBS POWER 1204 STROKE & UP PO BOX 1011 San Marcos CA 92079 Phone 619 744-9605 1 FAX 619 744-7923 Call write FREE Color Catalog 60 Model Aviation ducted Sig Wonder Bill Griggs Canastota NY has aDucted Wonder flight following bungee-assisted launch get single Astro 15 cobalt turning both fanson step flies can flown Electric powered sink next time out wasand continues beall up Electric thing clear Electric has come long way just two decades Im sure similar growth other aspect aeromodeling except possibly radio itself Twenty years ago struggle get Electricpowered model through air now view flies can flown Electric Well. almost anything something could never have imagined during first sinking flight twenty-some years ago Nor would have inclined write words decade ago five years ago Now very capable Electric motors other products market capable modelers using above whim wishful someday thinking part its reality seen walking flightline KRC meet fact last two three meets anything goes Electric point has driven home very hard Eight- twelve-pound Scale models have become routine modelers flying high-performance FAI like models straight-up accelerating climbs AULD Up Last Down fliers well past hour-power mark local modeler Tony Fiores three-year-old 22-pound 1A-scale PICA Mustang others have infringed last wet bastion giants Its true can still fly longer wet its matter time feel till lament goes away too Remember took just two decades go just barely flies current demonstrated outlook Im satisfied last Electric shortfall involves energy storage Batteries heavy relatively speaking tank glow fuel contains lot energy comparable weight batteries progress being made believe battery technology will soon emerge may very well obsolete wet power models lawn mowers cars . knows what else SANYO 1700 SCRC INDIVIDUAL CELLS SANYO 1400 SCR INDIVIDUAL CELLS $300 EA SANYO N1000 SCR INDIVDUAL CELLS $350 EA SANYO N800 AR INDIVIDUAL CELLS $350 EA SANYO N600 INDIVIDUAL CELLS $350 EA SANYO RECHARGEABLE AA INDIVIDUAL CELLS Gear Door Cycler put retractdoorsequenc ing like P-51 Mus g jets Install tang & other aircraft includ Y connector retract channel Controls gear door servos time re tract switch used up ordown geardoors open torafew seconds close again Delaytime isadjustablefrom 1-9 seconds 15x15x3/4 1/2 sz $3995 $150 EA Backer Best way insure reliable power model Use 2 packs Runs main packthen switchesto back up pack Works stan dard 4 cell 5 cell Gel-Cell packs Battery packs can different capacity like 1200 & 600 Solid state design uses MOSFET transistors add own switch har nesses wiring 15x15x3/4 Weighs 8 oz $4995 GLITCH Buster Mini-Max Throttle Optically isolate 6 chan-The microprocessor-con nels use aseparate bat-trolled super-small MINI tery pack servoMAX teatures high-rate no power Totally eliminatesadjustment auto-setup soft glitching caused heavystart brake throttle-guard duty servos long leadswontstart armed stick can use 4 5 6 cellsin position motor-off fail servo side tor extrasafe extensive glitch fil powerand speed Requires installation otyourown radio andtersottware Designed tori --- imps lbt amps peauf servo leads Compatible PCM radios Used RenoIncludes servo connectorandUSconnectors Measures Racers NASA tool 1 5x1 5x3/4 8 ox $4495ml 5x5 ht 1 oxIntroductory price $7995 22483 Mission Hills La Ysrha Linda CA 92587 Info 714-692-1393-$300 Shipping & Handling per order Orders 80t1-845-8978Credit Cards accep fed August1995 61 F IL S F E S latest versions local hobby shop send stamped #10 envelope full info RAM 09BATTERY BACKER redundant batt syst up 60 size model.. $3995 RAM 11LOW BATTERY ALARM audio visual 48V 96V2495 RAM 12LOW FUEL LIGHT glo fuel monitor visible flight. 1995 RAM 17LOST PLANE FINDER up 80 DB 10 ft ANY radio1995 RAM 18BIG AIRPLANE RF DE-GLITHER SYSTEM replaces 10 chokes895 RAM 22SIMPLE CYCLER discharges 48V & 96V baIt up 600 MA1995 RAM 25BIG PLANE BATTERY BACKER 10 amp cap w/2 switch harnesses5995 RAM 26BIG BATTERY CYCLER discharges 48V baIt up 4000 MA 2495 RAM 49IGNITER 800 MA board driver/starter 20 21 engine 4995 RAM 50IGNITER 1300 MA board driver/starter 35 up engine4995 RAM 62SERVO FAIL SAFE adj safe point y waterproofable 2495 unavailable locally send check money order full credit card info cost tern plus $400 $500 foreignl immediate shipment Include full address u PS Sorry no COO m 229A E Rollins Rd d Lake Beach IL 60073 SANYO 1700 SCRC MATCHED INDIVIDUAL CELLS$550 EA $450 EA Battery think will day wet engines will have hard time keeping up Electric thats needed rapidly rechargeable high-current-density cells watt-hours per ounce consumer level since big powerful motors already reality will mean no excuses no fields lost because noise extrapolation never having heard field lost because quiet Beginners sometimes experienced E modelers can have some confusion misunderstanding about motor battery prop operation see incoming mail flightline Some thoughts guidelines discussion above its fair think motor battery Electric fuel tankfilled charging emptied feeds motor/prop combination battery capacity tank size expressed Amp-hours rather fluid ounces wet-fuel tank Taken literally expression capacity physical description long battery will deliver given number amps example 14 Amp-hour pack will deliver nominal 14 amps hour 14 amps 1Ao hour six minutes until goes dry Its easy imagine other current-time combinations capacity rating also describes amount charge needed fill battery pack although actual practice takes little extra top offdue some electrochemical inefficiency Note above number cells pack does matter long have same Ampere-hour rating connected series standard way wiring cells purposes So seven-cell 14 Ah pack has same capacity 21 cell 14 Ah pack both will deliver 28 Amps three minutes course latter pack has three times cell count has three times total available energy later Astro Announces its New Digital Peak Detecting Battery Chargers Astro proudly announces five new digital micro-processor controlled peak detecting nicad battery chargers Models 114D115D 116D chargers designed 05 size models using up 8 cells model 114D AC/DC charger designed R/C cars model 115D AC/DC charger has adj table current can charge nicad battery 100 4000 mahr designed planes boats model 116D 12VDC version AC/DC Model 115D Models hOD hiD designed 05 40 size models can charge up 18 cells deluxe chargers fea ture two line digital LCD display indicates nicad voltage charge current time charge Milliamp-hours charge Model hOD works 12VDC Model hiD works both hiOVAC 12VDC chargers protected against reversed inputs short circuit outputs Model Cells 12VDC liOVAC Trickle Charge Trickle limit Fast Charge Fast limit Ammeter Voltmeter Stopwatch Mahr Meter Retail Price 114Dhl5D116DhODhiD 1-81-81-81-181-18 Yes Yes Yes Yes Yes Yes Yes No No Yes 400ma 400ma 400ma 400ma 400ma 5hrs 5hrs Shrs 5 hrs 5hrs 4 h/2A 1-5A 2-8A 1-5A 1-5A 45mm 45 mm 45 miD 45 mm 45 mm No Yes Yes Yes Yes No No No Yes Yes No No No Yes Yes No No No Yes Yes $8995 $10995 $8995 $15995 $19995 Astro Flight Inc 13311 Beach Ave Marina Del Rey CA 902 62 Model Aviation tric motors turn props make models go just wet engines wound rubber motors takes power turn prop fly airplane power derived stored energy charged motor battery liquid fuel twisted rubber cases energy stores always physically limited corresponding time limit long given power level prop rpm can maintained Power input Electric motors expressed wattsthe arithmetic multiplication motor voltage motor current Neglecting moment system speed control battery voltage may viewed motor voltage sum cell voltages As guideline operational battery voltage often considered 1 1 volts per cell times number cells Electric installations using nickel-cadmium cells Motor current same current flowing cells simple motor/battery system power input motor total voltage times current equals 11 x # cells x current amps motor current 20 amps seven-cell pack input power 11 x 7 x 20 about 154 watts Assuming prop used above appropriately selected motor model power actually delivered prop move air move model may typically about 70% above input number Power transfer perfect some power loss due system inefficiencies example numbers above power delivered prop about 108 watts missing lost power about 154108 atts appears motor heat get feel imagine holding lit 50-watt bulb Now know motors get hot example numbers just about what might experience some 550 economy can motors 7 cells turning 8 x 4 props Speaking very roughly motors require no input power prop 1 da nixe waight mnxt motor-gearbox system available anner bly weight approximately 7- -d can pr duce aver 1/2 hp 10 calm eapeox nay did witnana xl onotratixon Pete Pa 94 perfnnmanc -j Kopaki Model Aviation could climb nearly veOai -iiu lull dil Lll way up flUfli MLtJl tlllptane Newn May9S getting motor ruxa xl up 17 mm eth enoagh power left taxi back Jot Rankin Model Airplane Newn July95 Power nutpat durahnn can tailored model type tlyinglll SPECIAL LIMITED SALE 1 ea Turbo 10 motor cboloe 1 en Superbon 601 ratio t en Ftt-35 Digital motor controller wfth 14G wine coonectorn $tgtttttt S&fl Catalog $300 tree w/purchane Call annintance mxtor type gear ratio etc placing order MODEL ELECTRONICS COAR 30078274596500 -6th NWFAX 296-782-91 99 VISASeattle WA 98117MASTERCARD exactly true since takes some power overcome brush friction air drag armature bearing loss etc reality typical unpropped motor will take few amps run number about same no matter number cells provided cell count appropriate given motor However prop mounted input current rises dramatically now becomes very much dependent applied voltage Since input power multiplication motor voltage current can see increasing voltage causes rapid power increase since current goes up too can seen curves motor voltage current rpm shown actual data particular product typifies behavior Electric power systems graphs illustrate several other facts too rpm fairly well tracks motor voltage over much measured curve fair say rpm directly related voltageapproximately extent its related motor losses outside scope discussion Its different story current Motor current tends increase rapidly voltage rpm power curve result multiplying voltage current really climbs increasing rpmjust little less rpm can mean lot actual power Its common flightline experience find big difference model behavior what seems like rather small change rpm true power source rather fundamental principle has nothing motor brand prop brand gearing on Future columns will expand ideas help understand better clean quiet omni-applicable Electric worksfor fun Please send SASE letter youd like reply happy quiet landings everyoneno matter big small Electric st1995 63 TURBO 10 MOTORS Ce ENERGY COMPRESSION TECHNOLOGY 6 14 cello depending no rextar OUR NEWEST MOTOR FOR FREE-FLIGHT OR RC Same dimensions IMP-30 35-watt st motor chnology .IUAAA 4 cell operation Flies 200300 sq wing area airplanes14rA4\K\ TROLL-35 Motor includes prep adaptor capacItor & mounting hardware $1095 Pleauuat02uopusraoe/vanduna Ia yuu dial
Edition: Model Aviation - 1995/08
Page Numbers: 59, 60, 61, 62, 63
RADIO CONTROL ELECTRICS 11 U ri k1 W4iU'gL-l m 1 IE I THIS MONTH WELL COVER Electric Connection Service additional MaxCim information info potential symposium tape rapid maturing Electric some motor/prop/battery basics President Pete George just-formed St Louis Chargers Electric club wrote tell new organization invite interested get touch can reach Pete 2127 Arsenal St Louis MO 63118 Tel 314 664-6613 new club does yet have home field members also members other non-E clubs have permit fly local park Pete hopes promote E-flying area co-sponsoring activity some other clubs As reminder columns Electric Connection Service designed hook up other nearby Electric activity Just write Ill get info request upcoming column Last months column mentioned new MaxCim brushless motors controllers since written Ive received some follow-up info Tom Cimato chief modeler MaxCim motors available two versions measure about 1 3/ diameter 2/2 long weight 75 ounces Since no brushes no protruding brush holders add above dimensions As rough guideline very close physical size economy 550 can motors dramatically exceed performance capability motor shaft 3/is diameter MaxCim has matching prop adapter and/or gear drives available separately associated MaxCim brushless controller measures about 08 x 15 August1995 59 MODEL ELECTRONICS PLUS TURBO 10 MOTOR PERFORMANCE 60/10 Gears arid Sonic-Tronics 13 X 7 Folder 250 200 150 S z w 100 C S 50 0 012 455 RPM X 1000 GRAPH 2 ULATED POWER INPUT 1RPM RELATIONSHIP DERIVED FROM THE DATA DISPLAYED IN GRAPH 1 Mike Stewarts Dynaflite Spitfire has Astro cobalt 90 36 SCRCs Span 81 inches weighs 145 pounds MODEL ELECTRONICS PLUS TURBO 10 MOTOR PERFORMANCE 60/10 Gears Sonic-Tronics 13 X 7 Folder 27 VOLTS 18 0 03 C C, I-J 0 39 00 050100150200 Data Points NOTE DISREGARD BUMP NEAR BEGINNING OF CURRENT CURVE DUE STARTUP COGGING GRAPH AL AUTOMATICALLY ACQUIRED MOTOR/PROP DATA Don Belforts 1A-scale Cub weighs 12 pounds Geared Astro 60 turning 16 x 12 32 1500s 7-9 minutes x 23 weighs three ounces As two configurations mentioned above simply internal factory wiring option resulting either WYE DELTA version same motor WYE intended use 10-20 cells DELTA 6-12 cells Both have rated power output 300 watts 600-watt peak short term rating well Maximum RPM given 30000 MaxCim Motors 57 Hawthorne Dr Orchard Park NY 141271958 Tel 716 662-5651 Larry Sribnick SR Batteries tells ever since KRC video tape 94 Electric Fly came out hes getting inquiries questioning availability tape covering 94 KRC Symposium ran because KRC meet tape contains brief excerpts day-long symposium has sparked interest Larry tallying inquiries interest grows large enough warrant hell put own tape production Im hoping does come about because Symposium tremendous amount information offer 12 speakers covering kinds Electric topics plus topics general modeling interest Give consideration add name Larrys interest list day definitely would want myself Contact Larry Box 287 Bellport NY 11713 Tel 516 286-0079 Occasionally get request speak local club meeting course preparing such presentation Ive reflecting about Electric overall about mere two decades plus its existence Just Electric began little fuzzy argumentative about 1972 Thats reworked toy motor homemade gears special tiny radio large superlight tissuecovered model totally inappropriate batteries first experienced ElectricFUNSCALE PT1 9 DYNAFLITE PT-19 WILL GIVE YOU TRAINER LIKE PERFORMANCE IN GIANT SCALE KIT CONSTRUCTION IS ALL WOOD WITH PLASTIC COWL THERE IS FIBERGLASS COWL OPTION AVAILABLE DIRECT FROM DYNAFLITE ON 120 PERFORMANCE IS REALISTIC FROM TAKE OFF TO LANDINGS SPAN89 IN AREA 119896 SQ IN WEIGHT 115 TO 13 LBS POWER 1204 STROKE & UP PO BOX 1011 San Marcos CA 92079 Phone 619 744-9605 1 FAX 619 744-7923 Call write FREE Color Catalog 60 Model Aviation ducted Sig Wonder Bill Griggs Canastota NY has aDucted Wonder flight following bungee-assisted launch get single Astro 15 cobalt turning both fanson step flies can flown Electric powered sink next time out wasand continues beall up Electric thing clear Electric has come long way just two decades Im sure similar growth other aspect aeromodeling except possibly radio itself Twenty years ago struggle get Electricpowered model through air now view flies can flown Electric Well. almost anything something could never have imagined during first sinking flight twenty-some years ago Nor would have inclined write words decade ago five years ago Now very capable Electric motors other products market capable modelers using above whim wishful someday thinking part its reality seen walking flightline KRC meet fact last two three meets anything goes Electric point has driven home very hard Eight- twelve-pound Scale models have become routine modelers flying high-performance FAI like models straight-up accelerating climbs AULD Up Last Down fliers well past hour-power mark local modeler Tony Fiores three-year-old 22-pound 1A-scale PICA Mustang others have infringed last wet bastion giants Its true can still fly longer wet its matter time feel till lament goes away too Remember took just two decades go just barely flies current demonstrated outlook Im satisfied last Electric shortfall involves energy storage Batteries heavy relatively speaking tank glow fuel contains lot energy comparable weight batteries progress being made believe battery technology will soon emerge may very well obsolete wet power models lawn mowers cars . knows what else SANYO 1700 SCRC INDIVIDUAL CELLS SANYO 1400 SCR INDIVIDUAL CELLS $300 EA SANYO N1000 SCR INDIVDUAL CELLS $350 EA SANYO N800 AR INDIVIDUAL CELLS $350 EA SANYO N600 INDIVIDUAL CELLS $350 EA SANYO RECHARGEABLE AA INDIVIDUAL CELLS Gear Door Cycler put retractdoorsequenc ing like P-51 Mus g jets Install tang & other aircraft includ Y connector retract channel Controls gear door servos time re tract switch used up ordown geardoors open torafew seconds close again Delaytime isadjustablefrom 1-9 seconds 15x15x3/4 1/2 sz $3995 $150 EA Backer Best way insure reliable power model Use 2 packs Runs main packthen switchesto back up pack Works stan dard 4 cell 5 cell Gel-Cell packs Battery packs can different capacity like 1200 & 600 Solid state design uses MOSFET transistors add own switch har nesses wiring 15x15x3/4 Weighs 8 oz $4995 GLITCH Buster Mini-Max Throttle Optically isolate 6 chan-The microprocessor-con nels use aseparate bat-trolled super-small MINI tery pack servoMAX teatures high-rate no power Totally eliminatesadjustment auto-setup soft glitching caused heavystart brake throttle-guard duty servos long leadswontstart armed stick can use 4 5 6 cellsin position motor-off fail servo side tor extrasafe extensive glitch fil powerand speed Requires installation otyourown radio andtersottware Designed tori --- imps lbt amps peauf servo leads Compatible PCM radios Used RenoIncludes servo connectorandUSconnectors Measures Racers NASA tool 1 5x1 5x3/4 8 ox $4495ml 5x5 ht 1 oxIntroductory price $7995 22483 Mission Hills La Ysrha Linda CA 92587 Info 714-692-1393-$300 Shipping & Handling per order Orders 80t1-845-8978Credit Cards accep fed August1995 61 F IL S F E S latest versions local hobby shop send stamped #10 envelope full info RAM 09BATTERY BACKER redundant batt syst up 60 size model.. $3995 RAM 11LOW BATTERY ALARM audio visual 48V 96V2495 RAM 12LOW FUEL LIGHT glo fuel monitor visible flight. 1995 RAM 17LOST PLANE FINDER up 80 DB 10 ft ANY radio1995 RAM 18BIG AIRPLANE RF DE-GLITHER SYSTEM replaces 10 chokes895 RAM 22SIMPLE CYCLER discharges 48V & 96V baIt up 600 MA1995 RAM 25BIG PLANE BATTERY BACKER 10 amp cap w/2 switch harnesses5995 RAM 26BIG BATTERY CYCLER discharges 48V baIt up 4000 MA 2495 RAM 49IGNITER 800 MA board driver/starter 20 21 engine 4995 RAM 50IGNITER 1300 MA board driver/starter 35 up engine4995 RAM 62SERVO FAIL SAFE adj safe point y waterproofable 2495 unavailable locally send check money order full credit card info cost tern plus $400 $500 foreignl immediate shipment Include full address u PS Sorry no COO m 229A E Rollins Rd d Lake Beach IL 60073 SANYO 1700 SCRC MATCHED INDIVIDUAL CELLS$550 EA $450 EA Battery think will day wet engines will have hard time keeping up Electric thats needed rapidly rechargeable high-current-density cells watt-hours per ounce consumer level since big powerful motors already reality will mean no excuses no fields lost because noise extrapolation never having heard field lost because quiet Beginners sometimes experienced E modelers can have some confusion misunderstanding about motor battery prop operation see incoming mail flightline Some thoughts guidelines discussion above its fair think motor battery Electric fuel tankfilled charging emptied feeds motor/prop combination battery capacity tank size expressed Amp-hours rather fluid ounces wet-fuel tank Taken literally expression capacity physical description long battery will deliver given number amps example 14 Amp-hour pack will deliver nominal 14 amps hour 14 amps 1Ao hour six minutes until goes dry Its easy imagine other current-time combinations capacity rating also describes amount charge needed fill battery pack although actual practice takes little extra top offdue some electrochemical inefficiency Note above number cells pack does matter long have same Ampere-hour rating connected series standard way wiring cells purposes So seven-cell 14 Ah pack has same capacity 21 cell 14 Ah pack both will deliver 28 Amps three minutes course latter pack has three times cell count has three times total available energy later Astro Announces its New Digital Peak Detecting Battery Chargers Astro proudly announces five new digital micro-processor controlled peak detecting nicad battery chargers Models 114D115D 116D chargers designed 05 size models using up 8 cells model 114D AC/DC charger designed R/C cars model 115D AC/DC charger has adj table current can charge nicad battery 100 4000 mahr designed planes boats model 116D 12VDC version AC/DC Model 115D Models hOD hiD designed 05 40 size models can charge up 18 cells deluxe chargers fea ture two line digital LCD display indicates nicad voltage charge current time charge Milliamp-hours charge Model hOD works 12VDC Model hiD works both hiOVAC 12VDC chargers protected against reversed inputs short circuit outputs Model Cells 12VDC liOVAC Trickle Charge Trickle limit Fast Charge Fast limit Ammeter Voltmeter Stopwatch Mahr Meter Retail Price 114Dhl5D116DhODhiD 1-81-81-81-181-18 Yes Yes Yes Yes Yes Yes Yes No No Yes 400ma 400ma 400ma 400ma 400ma 5hrs 5hrs Shrs 5 hrs 5hrs 4 h/2A 1-5A 2-8A 1-5A 1-5A 45mm 45 mm 45 miD 45 mm 45 mm No Yes Yes Yes Yes No No No Yes Yes No No No Yes Yes No No No Yes Yes $8995 $10995 $8995 $15995 $19995 Astro Flight Inc 13311 Beach Ave Marina Del Rey CA 902 62 Model Aviation tric motors turn props make models go just wet engines wound rubber motors takes power turn prop fly airplane power derived stored energy charged motor battery liquid fuel twisted rubber cases energy stores always physically limited corresponding time limit long given power level prop rpm can maintained Power input Electric motors expressed wattsthe arithmetic multiplication motor voltage motor current Neglecting moment system speed control battery voltage may viewed motor voltage sum cell voltages As guideline operational battery voltage often considered 1 1 volts per cell times number cells Electric installations using nickel-cadmium cells Motor current same current flowing cells simple motor/battery system power input motor total voltage times current equals 11 x # cells x current amps motor current 20 amps seven-cell pack input power 11 x 7 x 20 about 154 watts Assuming prop used above appropriately selected motor model power actually delivered prop move air move model may typically about 70% above input number Power transfer perfect some power loss due system inefficiencies example numbers above power delivered prop about 108 watts missing lost power about 154108 atts appears motor heat get feel imagine holding lit 50-watt bulb Now know motors get hot example numbers just about what might experience some 550 economy can motors 7 cells turning 8 x 4 props Speaking very roughly motors require no input power prop 1 da nixe waight mnxt motor-gearbox system available anner bly weight approximately 7- -d can pr duce aver 1/2 hp 10 calm eapeox nay did witnana xl onotratixon Pete Pa 94 perfnnmanc -j Kopaki Model Aviation could climb nearly veOai -iiu lull dil Lll way up flUfli MLtJl tlllptane Newn May9S getting motor ruxa xl up 17 mm eth enoagh power left taxi back Jot Rankin Model Airplane Newn July95 Power nutpat durahnn can tailored model type tlyinglll SPECIAL LIMITED SALE 1 ea Turbo 10 motor cboloe 1 en Superbon 601 ratio t en Ftt-35 Digital motor controller wfth 14G wine coonectorn $tgtttttt S&fl Catalog $300 tree w/purchane Call annintance mxtor type gear ratio etc placing order MODEL ELECTRONICS COAR 30078274596500 -6th NWFAX 296-782-91 99 VISASeattle WA 98117MASTERCARD exactly true since takes some power overcome brush friction air drag armature bearing loss etc reality typical unpropped motor will take few amps run number about same no matter number cells provided cell count appropriate given motor However prop mounted input current rises dramatically now becomes very much dependent applied voltage Since input power multiplication motor voltage current can see increasing voltage causes rapid power increase since current goes up too can seen curves motor voltage current rpm shown actual data particular product typifies behavior Electric power systems graphs illustrate several other facts too rpm fairly well tracks motor voltage over much measured curve fair say rpm directly related voltageapproximately extent its related motor losses outside scope discussion Its different story current Motor current tends increase rapidly voltage rpm power curve result multiplying voltage current really climbs increasing rpmjust little less rpm can mean lot actual power Its common flightline experience find big difference model behavior what seems like rather small change rpm true power source rather fundamental principle has nothing motor brand prop brand gearing on Future columns will expand ideas help understand better clean quiet omni-applicable Electric worksfor fun Please send SASE letter youd like reply happy quiet landings everyoneno matter big small Electric st1995 63 TURBO 10 MOTORS Ce ENERGY COMPRESSION TECHNOLOGY 6 14 cello depending no rextar OUR NEWEST MOTOR FOR FREE-FLIGHT OR RC Same dimensions IMP-30 35-watt st motor chnology .IUAAA 4 cell operation Flies 200300 sq wing area airplanes14rA4\K\ TROLL-35 Motor includes prep adaptor capacItor & mounting hardware $1095 Pleauuat02uopusraoe/vanduna Ia yuu dial