RADIO CONTROL ELECTRICS THE ELECTRIC Connection Service brings modeler First flight state Don Miner 232 Dundeve Circle Hendersonville NC 28792 tells very few Electric fliers formal club including wet kind area Additionally theres much way fields either Im appealing Dons behalf interested area connect himespecially have field share back pocket Perhaps folks can combine knowledge resources develop E-club enjoy let know goes Charge Cord presented June October columns has brought its share reader response Some due errors crept along way sorry several readers caught Since know device basically works very well anyone having continuing difficulty due column glitches occurred youre welcome send Charge Cord Ill best fix itfree Also since some reader questions may interest others heres few answers comment modeler thought something wrong Charge Cord because seemed working heat sink wasnt getting warm hot story may may warm up follows Recall Charge Cord designed work motor batteries ranging 7 24 cells develops receiver battery charge current nearly constant 20 mA no matter what motor battery used Charge Cord electronics operate voltage difference between motor receiver battery can range about 3-30 volts depending cells motor battery low end range will cause significant power dissipation heating upper end will no doubt will feel some temperature rise heat sink larger motor batteries used totally normal thats heat sink thereso can use motor battery Next current charges receiver does flow through LED Rather regulated through transistor Incidental may notice some LED brightness variation agaln depending motor-pack cell count too perfectly normal Finally can should test output current newly completed Charge Cord verify working properly suggest first use seven-cell motor battery source current meter series 180-ohm resistor larger load meter/resistor combo temporary substitute receiver battery resistor will limit output current prevent meter damage should anything wrong new cord assembly well meter should indicate current level about 20 24 mA LED should glow meter/resistor present glow no load present works OK next best thing to substitute larger motor source battery verify meter reading above remains unchanged well can remove meter/resistor load use Charge Cord its intended purpose charging receiver batteries described June column August column included some computerized printouts charge/ discharge performance some 14 Ab SCR some 17 Ah SCRC cells data clearly demonstrated latter performed badly relatively speaking etter 14 Ah cells SCRC performance shortfall sort thing Id hearing about now too same disappointing experience column also noted being written columnists John Mountjoy Charlie Spear RC Report reporting very good results SCRCs Following appearance August column friend John graciously sent packs try out right pack performed very well producing least rated 17 Ah tested exact same setup previously used John obtained SCRCs PTI $680 per cell seems PTI sorts through cells keeps best January1994 85 II Months Topics 1 Electric Connection Service 2 Charge Cord owup 3 SCRC Performance owup 4 Revolt Telemetry 5 Flightec Data/Computer Interface 6 Beginner Info Note sorting good bad operation matching What does preclude experience getting low-capacity SCRCs paying dearly privilege Thanks John Charlie assist folks also reading RC Report Electric column month go forth right now mend error ways warned coming has now arrived Its telemetry graphs included month results early attempts regard took about seven weeks get up level Im now able send inflight information Revolt notebook PC curse word ground course realize Im first believe may first able share resulting E-flight info monthly column Both personal accomplishment sharing opportunity have rather excited airborne stuff consists simple holeboard assembly electronics plane board contains low-power RF transmitter 26995 mHz taken Radio Shack toy car Encoding AM modulation accomplished Signetics 5044 chip used some ordinary RC transmitters encode servo-position information Im using two its available seven channels board also contains some op amp signal conditioning circuitry interface sensor input 5044 Power comes Revolt s motor battery has 25 cobalt direct 14 cells starters chose sense send both motor battery temperature during flight easy allowed get everything working yielded some interesting results simply CyAed cyanoacrylate-glued LM34DZ temperature sensor both Astro 25 housing motor battery cell mid-pack location clearly anything can sense can use info input encoder future Im going after things like motor current voltage RPM airspeed etc ground end data link begins Hitec two- channel car receiver What would normally two servo outputs goes some pulse-width-to-voltage conversion circuitry tatter chunk o stuff converts full range pulse width motion 1 2 milliseconds DC voltage range 0 10 volts turn input A/D convener box same item used get battery charge/discharge data Finally box connected notebook computer serial port results live display motor battery degrees Farenheitin flight estimated overall system peak error about two degrees Referring graphs both data sets flights made same constant throttle setting less-than-full-power condition resulted about equal flight duration plane being flown large oval pattern time graph pair 86 Model Aviation inued page 92 Airborne telemetry system described text Weighs less two ounces built board measuring 2% x 3% use presents motor battery temperature normal cooling air flow other blocked air intake former case takeoff occurs about minute two temperatures gradually climb until about 9/2 minutes time motor stopped plane landed lack air intake no prop blast results sudden rise temperatures simple field blower directed air intake produced temperature drops beginning about 111/2 minutes second data set clearly differs first flight Its obvious misjudged outcomeotherwise Id have changed graph scale ahead time could see just hot motor really got Anyway note event timings two fights differ little overall makeup flights basically same takeoff constant-power flight motor shutdown some glide landing cooling blower Also note some telemetry signal breakup during flight overall electronic performance still rather impressive especially consideration relatively simple low-cost hardware involved Now consideration above please dont anyone tell again cooling doesnt matter Folks just beginning much come future Coincidentally preparing column Flightec sent announcement its just-released Computer R/C Data Logger professional version A/D box have telemetry systemonly part thereof CDL will connect IBM similar PC serial port functions precision four-channel digital voltmeter just like prettierThe CDL comes necessary software make happen uses simple commands such save display replay make easy DARNED GOOD AIRMEN tight. pilots anba Baud asa SpflaSoBat Bust Pilot KitMade tha USA #108-1/8soale.$695 #106-1/6scale795 #1051/5scale895 #1041/4scale995 #103-1/3scale.1595 #308-1/8jet695 #3071/7jet795 Indeed can use CDL non-E-power applications well just use imagination hook up anything can output simple analog DC voltage input CDL Presto its computer screen saved disk printed paper knows maybe theres some application modern hightech goodie wet power noisy gooey trailing edge model motovation technology Flightec introducing product $11995 plus $5 shipping handling includes Computer RIC Data Logger unit itself RS 232 cable connect unit computers serial port manual software Call write Flightec 21 Juniper Way Hamilton NJ 08619 Tel 609 584-9409 have order too since will needing two boxes eventually Just tell Phil Thayer boss want next right after Bobs Two readers have recently chided devoting space beginners needs Upon reflection know justified case recent columns have mostly covered relatively intense material readers like really need maintain some balance too will attempt mend error ways So ends first column after annual no-column Nats issue being written during first days September near-900 temperature high summer humidity outside Despite state mind conditions foster am well aware just long takes get So no further delay please accept sincere wish very happy holiday great Electri-flyin New Year best Please include SASE correspondence youd like reply makes life much easier 5 5484099 Full Body Pilot Kit #2061/6 scale.$ 995 #205-1/5 scale.1095 #2041/4 scale.1195 #2031/3 scale.1795 COnlains pool beau bools flelmel So IexoeflgJtS. 92 Model Aviation lectrics/Kopski Continued page 86 ORDERING INSTRUCTIONS See deals V Oslo ode doect Add 5100 fihipyins NYS Residents add 7% Tax Check Money 0de
Edition: Model Aviation - 1994/01
Page Numbers: 85, 86, 92
RADIO CONTROL ELECTRICS THE ELECTRIC Connection Service brings modeler First flight state Don Miner 232 Dundeve Circle Hendersonville NC 28792 tells very few Electric fliers formal club including wet kind area Additionally theres much way fields either Im appealing Dons behalf interested area connect himespecially have field share back pocket Perhaps folks can combine knowledge resources develop E-club enjoy let know goes Charge Cord presented June October columns has brought its share reader response Some due errors crept along way sorry several readers caught Since know device basically works very well anyone having continuing difficulty due column glitches occurred youre welcome send Charge Cord Ill best fix itfree Also since some reader questions may interest others heres few answers comment modeler thought something wrong Charge Cord because seemed working heat sink wasnt getting warm hot story may may warm up follows Recall Charge Cord designed work motor batteries ranging 7 24 cells develops receiver battery charge current nearly constant 20 mA no matter what motor battery used Charge Cord electronics operate voltage difference between motor receiver battery can range about 3-30 volts depending cells motor battery low end range will cause significant power dissipation heating upper end will no doubt will feel some temperature rise heat sink larger motor batteries used totally normal thats heat sink thereso can use motor battery Next current charges receiver does flow through LED Rather regulated through transistor Incidental may notice some LED brightness variation agaln depending motor-pack cell count too perfectly normal Finally can should test output current newly completed Charge Cord verify working properly suggest first use seven-cell motor battery source current meter series 180-ohm resistor larger load meter/resistor combo temporary substitute receiver battery resistor will limit output current prevent meter damage should anything wrong new cord assembly well meter should indicate current level about 20 24 mA LED should glow meter/resistor present glow no load present works OK next best thing to substitute larger motor source battery verify meter reading above remains unchanged well can remove meter/resistor load use Charge Cord its intended purpose charging receiver batteries described June column August column included some computerized printouts charge/ discharge performance some 14 Ab SCR some 17 Ah SCRC cells data clearly demonstrated latter performed badly relatively speaking etter 14 Ah cells SCRC performance shortfall sort thing Id hearing about now too same disappointing experience column also noted being written columnists John Mountjoy Charlie Spear RC Report reporting very good results SCRCs Following appearance August column friend John graciously sent packs try out right pack performed very well producing least rated 17 Ah tested exact same setup previously used John obtained SCRCs PTI $680 per cell seems PTI sorts through cells keeps best January1994 85 II Months Topics 1 Electric Connection Service 2 Charge Cord owup 3 SCRC Performance owup 4 Revolt Telemetry 5 Flightec Data/Computer Interface 6 Beginner Info Note sorting good bad operation matching What does preclude experience getting low-capacity SCRCs paying dearly privilege Thanks John Charlie assist folks also reading RC Report Electric column month go forth right now mend error ways warned coming has now arrived Its telemetry graphs included month results early attempts regard took about seven weeks get up level Im now able send inflight information Revolt notebook PC curse word ground course realize Im first believe may first able share resulting E-flight info monthly column Both personal accomplishment sharing opportunity have rather excited airborne stuff consists simple holeboard assembly electronics plane board contains low-power RF transmitter 26995 mHz taken Radio Shack toy car Encoding AM modulation accomplished Signetics 5044 chip used some ordinary RC transmitters encode servo-position information Im using two its available seven channels board also contains some op amp signal conditioning circuitry interface sensor input 5044 Power comes Revolt s motor battery has 25 cobalt direct 14 cells starters chose sense send both motor battery temperature during flight easy allowed get everything working yielded some interesting results simply CyAed cyanoacrylate-glued LM34DZ temperature sensor both Astro 25 housing motor battery cell mid-pack location clearly anything can sense can use info input encoder future Im going after things like motor current voltage RPM airspeed etc ground end data link begins Hitec two- channel car receiver What would normally two servo outputs goes some pulse-width-to-voltage conversion circuitry tatter chunk o stuff converts full range pulse width motion 1 2 milliseconds DC voltage range 0 10 volts turn input A/D convener box same item used get battery charge/discharge data Finally box connected notebook computer serial port results live display motor battery degrees Farenheitin flight estimated overall system peak error about two degrees Referring graphs both data sets flights made same constant throttle setting less-than-full-power condition resulted about equal flight duration plane being flown large oval pattern time graph pair 86 Model Aviation inued page 92 Airborne telemetry system described text Weighs less two ounces built board measuring 2% x 3% use presents motor battery temperature normal cooling air flow other blocked air intake former case takeoff occurs about minute two temperatures gradually climb until about 9/2 minutes time motor stopped plane landed lack air intake no prop blast results sudden rise temperatures simple field blower directed air intake produced temperature drops beginning about 111/2 minutes second data set clearly differs first flight Its obvious misjudged outcomeotherwise Id have changed graph scale ahead time could see just hot motor really got Anyway note event timings two fights differ little overall makeup flights basically same takeoff constant-power flight motor shutdown some glide landing cooling blower Also note some telemetry signal breakup during flight overall electronic performance still rather impressive especially consideration relatively simple low-cost hardware involved Now consideration above please dont anyone tell again cooling doesnt matter Folks just beginning much come future Coincidentally preparing column Flightec sent announcement its just-released Computer R/C Data Logger professional version A/D box have telemetry systemonly part thereof CDL will connect IBM similar PC serial port functions precision four-channel digital voltmeter just like prettierThe CDL comes necessary software make happen uses simple commands such save display replay make easy DARNED GOOD AIRMEN tight. pilots anba Baud asa SpflaSoBat Bust Pilot KitMade tha USA #108-1/8soale.$695 #106-1/6scale795 #1051/5scale895 #1041/4scale995 #103-1/3scale.1595 #308-1/8jet695 #3071/7jet795 Indeed can use CDL non-E-power applications well just use imagination hook up anything can output simple analog DC voltage input CDL Presto its computer screen saved disk printed paper knows maybe theres some application modern hightech goodie wet power noisy gooey trailing edge model motovation technology Flightec introducing product $11995 plus $5 shipping handling includes Computer RIC Data Logger unit itself RS 232 cable connect unit computers serial port manual software Call write Flightec 21 Juniper Way Hamilton NJ 08619 Tel 609 584-9409 have order too since will needing two boxes eventually Just tell Phil Thayer boss want next right after Bobs Two readers have recently chided devoting space beginners needs Upon reflection know justified case recent columns have mostly covered relatively intense material readers like really need maintain some balance too will attempt mend error ways So ends first column after annual no-column Nats issue being written during first days September near-900 temperature high summer humidity outside Despite state mind conditions foster am well aware just long takes get So no further delay please accept sincere wish very happy holiday great Electri-flyin New Year best Please include SASE correspondence youd like reply makes life much easier 5 5484099 Full Body Pilot Kit #2061/6 scale.$ 995 #205-1/5 scale.1095 #2041/4 scale.1195 #2031/3 scale.1795 COnlains pool beau bools flelmel So IexoeflgJtS. 92 Model Aviation lectrics/Kopski Continued page 86 ORDERING INSTRUCTIONS See deals V Oslo ode doect Add 5100 fihipyins NYS Residents add 7% Tax Check Money 0de
Edition: Model Aviation - 1994/01
Page Numbers: 85, 86, 92
RADIO CONTROL ELECTRICS THE ELECTRIC Connection Service brings modeler First flight state Don Miner 232 Dundeve Circle Hendersonville NC 28792 tells very few Electric fliers formal club including wet kind area Additionally theres much way fields either Im appealing Dons behalf interested area connect himespecially have field share back pocket Perhaps folks can combine knowledge resources develop E-club enjoy let know goes Charge Cord presented June October columns has brought its share reader response Some due errors crept along way sorry several readers caught Since know device basically works very well anyone having continuing difficulty due column glitches occurred youre welcome send Charge Cord Ill best fix itfree Also since some reader questions may interest others heres few answers comment modeler thought something wrong Charge Cord because seemed working heat sink wasnt getting warm hot story may may warm up follows Recall Charge Cord designed work motor batteries ranging 7 24 cells develops receiver battery charge current nearly constant 20 mA no matter what motor battery used Charge Cord electronics operate voltage difference between motor receiver battery can range about 3-30 volts depending cells motor battery low end range will cause significant power dissipation heating upper end will no doubt will feel some temperature rise heat sink larger motor batteries used totally normal thats heat sink thereso can use motor battery Next current charges receiver does flow through LED Rather regulated through transistor Incidental may notice some LED brightness variation agaln depending motor-pack cell count too perfectly normal Finally can should test output current newly completed Charge Cord verify working properly suggest first use seven-cell motor battery source current meter series 180-ohm resistor larger load meter/resistor combo temporary substitute receiver battery resistor will limit output current prevent meter damage should anything wrong new cord assembly well meter should indicate current level about 20 24 mA LED should glow meter/resistor present glow no load present works OK next best thing to substitute larger motor source battery verify meter reading above remains unchanged well can remove meter/resistor load use Charge Cord its intended purpose charging receiver batteries described June column August column included some computerized printouts charge/ discharge performance some 14 Ab SCR some 17 Ah SCRC cells data clearly demonstrated latter performed badly relatively speaking etter 14 Ah cells SCRC performance shortfall sort thing Id hearing about now too same disappointing experience column also noted being written columnists John Mountjoy Charlie Spear RC Report reporting very good results SCRCs Following appearance August column friend John graciously sent packs try out right pack performed very well producing least rated 17 Ah tested exact same setup previously used John obtained SCRCs PTI $680 per cell seems PTI sorts through cells keeps best January1994 85 II Months Topics 1 Electric Connection Service 2 Charge Cord owup 3 SCRC Performance owup 4 Revolt Telemetry 5 Flightec Data/Computer Interface 6 Beginner Info Note sorting good bad operation matching What does preclude experience getting low-capacity SCRCs paying dearly privilege Thanks John Charlie assist folks also reading RC Report Electric column month go forth right now mend error ways warned coming has now arrived Its telemetry graphs included month results early attempts regard took about seven weeks get up level Im now able send inflight information Revolt notebook PC curse word ground course realize Im first believe may first able share resulting E-flight info monthly column Both personal accomplishment sharing opportunity have rather excited airborne stuff consists simple holeboard assembly electronics plane board contains low-power RF transmitter 26995 mHz taken Radio Shack toy car Encoding AM modulation accomplished Signetics 5044 chip used some ordinary RC transmitters encode servo-position information Im using two its available seven channels board also contains some op amp signal conditioning circuitry interface sensor input 5044 Power comes Revolt s motor battery has 25 cobalt direct 14 cells starters chose sense send both motor battery temperature during flight easy allowed get everything working yielded some interesting results simply CyAed cyanoacrylate-glued LM34DZ temperature sensor both Astro 25 housing motor battery cell mid-pack location clearly anything can sense can use info input encoder future Im going after things like motor current voltage RPM airspeed etc ground end data link begins Hitec two- channel car receiver What would normally two servo outputs goes some pulse-width-to-voltage conversion circuitry tatter chunk o stuff converts full range pulse width motion 1 2 milliseconds DC voltage range 0 10 volts turn input A/D convener box same item used get battery charge/discharge data Finally box connected notebook computer serial port results live display motor battery degrees Farenheitin flight estimated overall system peak error about two degrees Referring graphs both data sets flights made same constant throttle setting less-than-full-power condition resulted about equal flight duration plane being flown large oval pattern time graph pair 86 Model Aviation inued page 92 Airborne telemetry system described text Weighs less two ounces built board measuring 2% x 3% use presents motor battery temperature normal cooling air flow other blocked air intake former case takeoff occurs about minute two temperatures gradually climb until about 9/2 minutes time motor stopped plane landed lack air intake no prop blast results sudden rise temperatures simple field blower directed air intake produced temperature drops beginning about 111/2 minutes second data set clearly differs first flight Its obvious misjudged outcomeotherwise Id have changed graph scale ahead time could see just hot motor really got Anyway note event timings two fights differ little overall makeup flights basically same takeoff constant-power flight motor shutdown some glide landing cooling blower Also note some telemetry signal breakup during flight overall electronic performance still rather impressive especially consideration relatively simple low-cost hardware involved Now consideration above please dont anyone tell again cooling doesnt matter Folks just beginning much come future Coincidentally preparing column Flightec sent announcement its just-released Computer R/C Data Logger professional version A/D box have telemetry systemonly part thereof CDL will connect IBM similar PC serial port functions precision four-channel digital voltmeter just like prettierThe CDL comes necessary software make happen uses simple commands such save display replay make easy DARNED GOOD AIRMEN tight. pilots anba Baud asa SpflaSoBat Bust Pilot KitMade tha USA #108-1/8soale.$695 #106-1/6scale795 #1051/5scale895 #1041/4scale995 #103-1/3scale.1595 #308-1/8jet695 #3071/7jet795 Indeed can use CDL non-E-power applications well just use imagination hook up anything can output simple analog DC voltage input CDL Presto its computer screen saved disk printed paper knows maybe theres some application modern hightech goodie wet power noisy gooey trailing edge model motovation technology Flightec introducing product $11995 plus $5 shipping handling includes Computer RIC Data Logger unit itself RS 232 cable connect unit computers serial port manual software Call write Flightec 21 Juniper Way Hamilton NJ 08619 Tel 609 584-9409 have order too since will needing two boxes eventually Just tell Phil Thayer boss want next right after Bobs Two readers have recently chided devoting space beginners needs Upon reflection know justified case recent columns have mostly covered relatively intense material readers like really need maintain some balance too will attempt mend error ways So ends first column after annual no-column Nats issue being written during first days September near-900 temperature high summer humidity outside Despite state mind conditions foster am well aware just long takes get So no further delay please accept sincere wish very happy holiday great Electri-flyin New Year best Please include SASE correspondence youd like reply makes life much easier 5 5484099 Full Body Pilot Kit #2061/6 scale.$ 995 #205-1/5 scale.1095 #2041/4 scale.1195 #2031/3 scale.1795 COnlains pool beau bools flelmel So IexoeflgJtS. 92 Model Aviation lectrics/Kopski Continued page 86 ORDERING INSTRUCTIONS See deals V Oslo ode doect Add 5100 fihipyins NYS Residents add 7% Tax Check Money 0de