RADIO CONTROL ELECTRICS THIS COLUMN has two meet announcements Electric Connection June errata new info motor control efficiency Astros philosophy brush/brushless scene neat new Astro VII meter Baylor Electric Products news flying own Aveox motor introductory look Joamr Mini Max Lofty Pursuits speed controls Westmoreland PA Electric Soaring Society WESS annual Electric fly-In August 14 Details still development theyll firm time read Check CD George Minnear 118 Jay Drive Verona PA 15147 Tel 412 793-3965 Everything need know about 94 Fifteenth KRC Electric Fly available six-page mailer Electric Fly Manager Rich Samuels 716 Shadywood Drive Perkasie PA 18944 Tel home 215 257-5593 work 215 822-3238 ext 2456 wishing participate popular All-Up/Last-Down event call KRC Hotline 215 234-4618 preregistration frequency allocation Remember year s activities span three days September 16-18 See April column SR Friday Symposium/Night Fly details Electric Connection Service happily announces availability large field Electric sailplane use Zephyrhills Florida about 30 miles north Tampa Larry Doris Bumette Country Crafts Hobbies provided information hobby shop carries large inventory Electric goodies can call em 813 782-9166 info field shop June column misprint graph caption page 81 caption should read Battery Current. Motor Current Having just referenced June graph showing difference battery current drain frame rate high rate speed controls Id now like expand subject months graphs differ Junes several ways direct result reader letter reader felt high rate controls very efficient preferred different approach pursuing point because likes fly All-Up/Last-Down events found controlling motor series/parallel switching battery pack see MA February 93 resulted much longer duration could accept some advantage pack switching could accept degree difference described So just prove point find out otherwise outcome study graphs actually offer same information currentdrain perspective power-drain perspective characterize Astro 15 direct drive Rev-Up 8 x 4 under different conditions two three-curve sets show performance motor/prop combo controlled directly applied variable voltage framerate speed control high-rate speed control combinations run over approximately same rpm range information represented solid line both graphs motor driven variable voltage supply labels direct drive direct power Data taken during run-up includes motor voltage current rpmautomatically computer logged motor powered ramped power supply over two-minute period Its smoother display points would result motor run up cell time cells Think reference data against other two curves can compared continued experiment using frame-rate control operating fixed 12V supply As previous column presentations speed control automatically swept full off full supply battery current rpm data being automatically acquired graphs open-circle points reflect Note rpm range supply current battery current drain essentially same both no control direct power drive frame-rate control Putting another way solid current/rpm curve opens circles nearly overlay other first glance result might convey happy message currents same dont fooled Look power drain curves readily see real story Because supply voltage varied zero full value direct-power case always 12 volts frame-rate control case power demand supply former much lower average same rpm same current power drain supply voltage x supply current higher frame-rate speed control since supply voltage always constant full-value number extra power goes heating motor battery pack power never gets prop power available flight wasted power Now high-rate control case depicted solid-circle data points too powered constant 12 volts Note average power drain well below frame-rate example given rpm Ifs quite low direct-voltage-drive case questioning reader actually little bit right Indeed speed control efficient varying battery pack makeup pack switching However suspected things nearly bad September1994 65 00 C010Z~0C0fl3 C3w3w333wro CCCCCCC 01w 0~I n~ ~CC01 cvwi01 CC----- .. ~ ~0 C oC33 C0130 33303030 30 01 CC3- 3330 30 3G3C&3CC"t3 Z trt0 aC0 303 CO 30013-3 3CC-C-313103103031031 3003OC33310000.J030 0CCO30(00C ~3Cc3033000CC30C0130CCCe 0101 CCCrZ- -z ct0000000000033 C 00330C 330330 3131 0a3033C3310CCaw00-3-JtoaCa sC30t00~i34 33000000 0101r010CCra 3300111333OCr Oa003Ua01330fl003303333fl - - 0101aCOW OC C C C C 0 CCC 01 ,0C-3C-303 -CCC0C0C00CCC313t3-4C01jtJC31CCCO 310 3 C3103110013(31 33130C31 33030003030313131C 03003003303-3 0J~-3 4 33 3131 30030000031 3313131 0 33033030300303030303 a30O~30o30o30-304C 30C3030313 3000300300 33030 300000 0 0030 30 3030 3000 C3030300C 00 0330030 30000030C030000 00000 00 033300 oDo 01a 0 013 OTHERSIZESAVAILABLE F01 C 0 3Ca 001000N 00030 3330COC CCCaa C0-Ja 303010J 60103300330 3030 ICCO Z0 30 fl1-CCC30 0 ~ r33 rnmN555C5X000000000000 0000000 4SS -- E CO 1 0310 O 3 -030C04 0 063C03003 000030O0oo 0000030 0013O3C0 Coo 00 C 003 CO 0033003300 3030 030031 3 00300000 C ii CD -I CD ii rn 0 -I z C 0 rn 0 0 z -I ii CD -I w ICD CD -I CD 1 0 -I 0 z C C z -I rn ii 0 CD -u rTi 0 -L 0 0 0 i 3 DO n FJ c O O-t -3 en no o 0 00 0 0 CD CD w 0 CO 0 0 en en CD CD 0-I en neD 0 CDW CD C 5 0 0 0 en 0 0 0 0 0 en en 0 2 0 0 0 0 2 0 0 g- 06 ~ -l 301 0 6 -- 0 6 06 030 0 0 2306 0 0 0 0--3 0 02 6 0 0 6 0 0 02~ 0 - 0 0 00 0 0- 00 0 0 0 0 - 2 0 13 6 10 3000-600 0 - - 0- 6 2 0~ 0 06 0 6~ 00 00~0-- -00 0-300 020~0 3000000 030 0-00-0 30 00-0-6 2 0- 030 2 60 00030 00- o T0 0 6 60 o~ 00-0oo 10630-203 3000100 l00 6000 06~l1O~ 0 0 D 0 0 2 43 C, 2 ~0 ii 430 02 gb Ofl 0-0 01 cm 01-0 00 010 cnZ 011J1- C o M 00-Jz 3 00 p oro DZ wm 0 0-- C -iF cn 0 013 C- faster would appropriate smaller prop would consistent higher rpm resulting increased cell count Okay Electric heavieswhat about last column also described Astro has brought constant innovation Electric two decades photo month shows perfect example Astro has recently announced minisized digital voltlammeter Model 100 intended insert in-line motor speed controL/motor combination measure actual circuit voltage current Volts Amps selected switch unit both pieces information quickly obtained According instruction sheet voltmeter range 60 volts ammeter range 60 ampsadequate virtually power systems use unit derives its operating power motor circuit no internal meter battery needed Astro connectors supplied wiring short heavy virtually no power loss instrument use Mine works just great strongly recommend serious Electric fliers give item high priority Santa lists $6995 list its good buy Hint make some adapter cords use voltmeter quick check receiver transmitter packs too As mentioned last month Brad Baylor Baylor Electric Products has joined forces Aveox continuing BEP BEPs new address ox 1576 Agoura CA 91376 Tel 800 255- 5237 orders literature requests 818 878-9147 technical assistance no overlap conflict interest new arrangement Brad will developing new products Aveox new BEP products well will compete other example Brad working new microprocessor-based motor control Axeox brushless motor part Aveox same time hes expanding own microprocessor speed control line regular motors part BEP since Aveox conventional bmshed motor business 68 Model Aviation us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door seq uancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have indep endant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$57900 including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 842 1703 Dealer inguirieswelcomeAll prices US fundsShipping valves & cylinders $450 other Electric goodies way too Incidentally just began flying BEP Micro-FET LV speed control amazingly flexible design offering kinds programmability think control offers features per dollar product Ive seen including exponential option like very much see MA 594 7-21 cell control sells $6995 higher-voltage version $8995 have tell Im having great time flying Aveox 1412/7 motor Ive since last fall didnt really get much air time till spring Ive dedicated four Revolt s otherwise docile test airplane quite thrill motor Im currently using 14 cells have playing different props Ive used 9 x 6 lOx 6 11 x 6 interchangably dramatic results motor does seem bothered wide range prop loads simply keeps pulling moreso bigger props course plane quite peppy 9 x 6 really blasts off 11 x 6 Thereafter boxy model design easily maintains 6OO7OO climb angle back off juice settles down its normal docile nature power dynamic range enormous flight thrill What also fun folks flight line react used seeing pussycat test REVOLTs much tiger photo shows both Jomar Mm-Max Lofty Pursuits LPSC-1 microprocessorcontrolled speed controls close footprint although latter thicker two members new breed controls have appeared during past year Ive flown both test Revolt different power systems has provided good performance results Highlights Mini Max somewhat departure Joe Utasi control optically coupled Since Im big fan opto-coupling aspect gave some pause However quite few flights its credit have QUI CKEE 500 CENTRAL stop shopping levels QUICKEE flying Competition 4 Engines4 Kits4 Accessories RossiOrbiterTru-Turn MVVSScat-CatAPC WebraRevolutionRev-Up JettDodgerK&B NelsonTexas OutlawWheels ASPSonic 500Tanks FoxThunderquickeeMotor Mounts $595 Shipping $595 COD hh 10% Discount Complete Airplane Packages SHo P 1-208-263-1614 BUDS HOBBY Questions UL SACHS POWER WALKER MACHiNE -. III 517 N Elizabeth P0 Box 777 Milton-Freewater OR 97862 503 938-6743 Fax 503 938-6950 Muminum Wheels Tires Wheels include bronze bearings fasteners Fits 5 1/4 inch tires $2400 Engine Test Run 58 Engine $62000 42 Engine $55000 32 Engine $47500 26 Engine $47500 $1200 Shipping September 1994 69 JOMAR ELECTRIC THROTTLES MINI-MAX 1-16 cells 30A Max ONLY throttle doesnt lie about its weight! 1 ounces Exactly High rate soft start Automatic set-u p 2 MOSEETs throttle 1 Brake Auto shut down loss signal Throttle Guard keeps motor off power up Signal-Hold eliminates nuiscance surges Extensive software signal processing COMPLETELY eliminates glitches Works ferrite stock EAI Cobalt motors 010 15 size Dont fooled imposters Buy best Joinar name can trust1 Measures 1 X 15 X 55! $7995 till year end SM-4 SPORT 7-24 cells 40A Max the rest compared to! production since 1989 thousands currently use working reliably! Uses standard IC circuitry no computers achieve reliable glitch free performance 1 15/16 X 1 9/16 X 5/16 weighs 14 ounces COMPLETE Optical isolation high rate soft start NO brake Perfect larger sport type electric aircraft Smooth proportional control RPM Easy adjustment match transmitter Now priced $8995 till year end Now can enjoy classic less! MAXCELL 12-40 cells 50A Max fly 40 60 90 some big un port control Computer smart button setup Only 2 ounces light 5-100 volt MOSFETS brake Still $149 JOMAR PRODtJCTS 3440 RIVERHILLS DR CINTI OH 45244 513-271-3903 Other kits availablePrices Subjec o Change Starchaser CanardDealer Inquires come Canard StickMade Ame ca ILIGHTECH MODELS INC Ducted Fan Jets 1441 N Maytair Rd Milwaukee WI 53226 USA Ph 414-257-1923 Fax 414-771-2092Oatalog$2OQUSDMCd aLt LDM Industries Inc Quality li/C Model Pmducts e 1984 NO-HEAT Trim Solvent Takes hassle out Monokote trim work HT Bonds Monokote over Monokote heat Eliminates ugly bubbles wrinkles Completely fuel-proof easy use Allows time position trim pieces Also works Ultracote Oracover NO-HEAT Trim Solvent Part #9500$695 Other Great Products LDM STRONGBOX Part #8000$795To order send check money STRONGBOX LI Part #81 00$1195order including $300 S & H LtNI Industries Inc BALL BEARFNG SERVO CONVERSIONKITSPO Box 292396 Dept 2 Futaba 4-pack Part #9600$2995 pa FL 33687-2396 Futaba Single Part #9610$795 one 813-991-4277 Airtronics 4-pack Part #9700$2995 ax 813-991-4810 Ajrtronics Single Part #9710$795Florida residents add 6 1/2S sales tax JR / Hitec 4-pack Part #9800$2095VISA MASTER CARD Accepted JR Hitec Single Part #9810 s LDM Industries Inc experienced no perceptible glitching controleven tried hard find make some would have thought possible hut such case far experience course radios other conditions can affect outcome control works just great reason smart microprocessor-controlled signal-handling routine later met Doug Ingraham Lofty Pursuits 93 KRC meet Hes very gentlemanly fellow wanted offer opportunity try speed controls Knowing penchant opto-coupling sure good idea talked told him always try fair game So now Im flying wont give up Doug approached ever-worrisome motor-noise problem different manner addition microprocessor monitoring valid signals unit has designed-in ferrite filters line chokes instead opto coupling signal leads serve attenuate electrical motor noise path similar prototype Ace control have Anyway Ive flying LPSC-1 excellent results well nice feature literature Doug provides its like mini-course speedcontrol installation modification operation maintenance distinct advantage associated somewhat larger volume LPSC-1 its built conventional discrete components modelers can handle repairs instructions available parts Lofty like tinker So ends 11th Anniversary column Please include SASE correspondence youd like reply Happy Safe Quiet Electric Landings Everyone TO Magazine Aircraft Builder whole new world awaits pages EAAs Experimenter magazine Learn build kitplane ultralight pilot yourself See what other EAA members building Get latest aviation news information Plus techniques composite woo metal tube fabric applications Regular features include ShopTalk HotLine Hints Homebuilders moreall packed monthly issue Experimenter 70 Model Aviation SCALE LONG EL 1/4 SCALES Lnglne Radio 4 nanneIs. S1O995S&H EAA Experimenter BUILD AIRCRAFT YOU CAN FLY
Edition: Model Aviation - 1994/09
Page Numbers: 65, 66, 68, 69, 70
RADIO CONTROL ELECTRICS THIS COLUMN has two meet announcements Electric Connection June errata new info motor control efficiency Astros philosophy brush/brushless scene neat new Astro VII meter Baylor Electric Products news flying own Aveox motor introductory look Joamr Mini Max Lofty Pursuits speed controls Westmoreland PA Electric Soaring Society WESS annual Electric fly-In August 14 Details still development theyll firm time read Check CD George Minnear 118 Jay Drive Verona PA 15147 Tel 412 793-3965 Everything need know about 94 Fifteenth KRC Electric Fly available six-page mailer Electric Fly Manager Rich Samuels 716 Shadywood Drive Perkasie PA 18944 Tel home 215 257-5593 work 215 822-3238 ext 2456 wishing participate popular All-Up/Last-Down event call KRC Hotline 215 234-4618 preregistration frequency allocation Remember year s activities span three days September 16-18 See April column SR Friday Symposium/Night Fly details Electric Connection Service happily announces availability large field Electric sailplane use Zephyrhills Florida about 30 miles north Tampa Larry Doris Bumette Country Crafts Hobbies provided information hobby shop carries large inventory Electric goodies can call em 813 782-9166 info field shop June column misprint graph caption page 81 caption should read Battery Current. Motor Current Having just referenced June graph showing difference battery current drain frame rate high rate speed controls Id now like expand subject months graphs differ Junes several ways direct result reader letter reader felt high rate controls very efficient preferred different approach pursuing point because likes fly All-Up/Last-Down events found controlling motor series/parallel switching battery pack see MA February 93 resulted much longer duration could accept some advantage pack switching could accept degree difference described So just prove point find out otherwise outcome study graphs actually offer same information currentdrain perspective power-drain perspective characterize Astro 15 direct drive Rev-Up 8 x 4 under different conditions two three-curve sets show performance motor/prop combo controlled directly applied variable voltage framerate speed control high-rate speed control combinations run over approximately same rpm range information represented solid line both graphs motor driven variable voltage supply labels direct drive direct power Data taken during run-up includes motor voltage current rpmautomatically computer logged motor powered ramped power supply over two-minute period Its smoother display points would result motor run up cell time cells Think reference data against other two curves can compared continued experiment using frame-rate control operating fixed 12V supply As previous column presentations speed control automatically swept full off full supply battery current rpm data being automatically acquired graphs open-circle points reflect Note rpm range supply current battery current drain essentially same both no control direct power drive frame-rate control Putting another way solid current/rpm curve opens circles nearly overlay other first glance result might convey happy message currents same dont fooled Look power drain curves readily see real story Because supply voltage varied zero full value direct-power case always 12 volts frame-rate control case power demand supply former much lower average same rpm same current power drain supply voltage x supply current higher frame-rate speed control since supply voltage always constant full-value number extra power goes heating motor battery pack power never gets prop power available flight wasted power Now high-rate control case depicted solid-circle data points too powered constant 12 volts Note average power drain well below frame-rate example given rpm Ifs quite low direct-voltage-drive case questioning reader actually little bit right Indeed speed control efficient varying battery pack makeup pack switching However suspected things nearly bad September1994 65 00 C010Z~0C0fl3 C3w3w333wro CCCCCCC 01w 0~I n~ ~CC01 cvwi01 CC----- .. ~ ~0 C oC33 C0130 33303030 30 01 CC3- 3330 30 3G3C&3CC"t3 Z trt0 aC0 303 CO 30013-3 3CC-C-313103103031031 3003OC33310000.J030 0CCO30(00C ~3Cc3033000CC30C0130CCCe 0101 CCCrZ- -z ct0000000000033 C 00330C 330330 3131 0a3033C3310CCaw00-3-JtoaCa sC30t00~i34 33000000 0101r010CCra 3300111333OCr Oa003Ua01330fl003303333fl - - 0101aCOW OC C C C C 0 CCC 01 ,0C-3C-303 -CCC0C0C00CCC313t3-4C01jtJC31CCCO 310 3 C3103110013(31 33130C31 33030003030313131C 03003003303-3 0J~-3 4 33 3131 30030000031 3313131 0 33033030300303030303 a30O~30o30o30-304C 30C3030313 3000300300 33030 300000 0 0030 30 3030 3000 C3030300C 00 0330030 30000030C030000 00000 00 033300 oDo 01a 0 013 OTHERSIZESAVAILABLE F01 C 0 3Ca 001000N 00030 3330COC CCCaa C0-Ja 303010J 60103300330 3030 ICCO Z0 30 fl1-CCC30 0 ~ r33 rnmN555C5X000000000000 0000000 4SS -- E CO 1 0310 O 3 -030C04 0 063C03003 000030O0oo 0000030 0013O3C0 Coo 00 C 003 CO 0033003300 3030 030031 3 00300000 C ii CD -I CD ii rn 0 -I z C 0 rn 0 0 z -I ii CD -I w ICD CD -I CD 1 0 -I 0 z C C z -I rn ii 0 CD -u rTi 0 -L 0 0 0 i 3 DO n FJ c O O-t -3 en no o 0 00 0 0 CD CD w 0 CO 0 0 en en CD CD 0-I en neD 0 CDW CD C 5 0 0 0 en 0 0 0 0 0 en en 0 2 0 0 0 0 2 0 0 g- 06 ~ -l 301 0 6 -- 0 6 06 030 0 0 2306 0 0 0 0--3 0 02 6 0 0 6 0 0 02~ 0 - 0 0 00 0 0- 00 0 0 0 0 - 2 0 13 6 10 3000-600 0 - - 0- 6 2 0~ 0 06 0 6~ 00 00~0-- -00 0-300 020~0 3000000 030 0-00-0 30 00-0-6 2 0- 030 2 60 00030 00- o T0 0 6 60 o~ 00-0oo 10630-203 3000100 l00 6000 06~l1O~ 0 0 D 0 0 2 43 C, 2 ~0 ii 430 02 gb Ofl 0-0 01 cm 01-0 00 010 cnZ 011J1- C o M 00-Jz 3 00 p oro DZ wm 0 0-- C -iF cn 0 013 C- faster would appropriate smaller prop would consistent higher rpm resulting increased cell count Okay Electric heavieswhat about last column also described Astro has brought constant innovation Electric two decades photo month shows perfect example Astro has recently announced minisized digital voltlammeter Model 100 intended insert in-line motor speed controL/motor combination measure actual circuit voltage current Volts Amps selected switch unit both pieces information quickly obtained According instruction sheet voltmeter range 60 volts ammeter range 60 ampsadequate virtually power systems use unit derives its operating power motor circuit no internal meter battery needed Astro connectors supplied wiring short heavy virtually no power loss instrument use Mine works just great strongly recommend serious Electric fliers give item high priority Santa lists $6995 list its good buy Hint make some adapter cords use voltmeter quick check receiver transmitter packs too As mentioned last month Brad Baylor Baylor Electric Products has joined forces Aveox continuing BEP BEPs new address ox 1576 Agoura CA 91376 Tel 800 255- 5237 orders literature requests 818 878-9147 technical assistance no overlap conflict interest new arrangement Brad will developing new products Aveox new BEP products well will compete other example Brad working new microprocessor-based motor control Axeox brushless motor part Aveox same time hes expanding own microprocessor speed control line regular motors part BEP since Aveox conventional bmshed motor business 68 Model Aviation us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door seq uancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have indep endant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$57900 including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 842 1703 Dealer inguirieswelcomeAll prices US fundsShipping valves & cylinders $450 other Electric goodies way too Incidentally just began flying BEP Micro-FET LV speed control amazingly flexible design offering kinds programmability think control offers features per dollar product Ive seen including exponential option like very much see MA 594 7-21 cell control sells $6995 higher-voltage version $8995 have tell Im having great time flying Aveox 1412/7 motor Ive since last fall didnt really get much air time till spring Ive dedicated four Revolt s otherwise docile test airplane quite thrill motor Im currently using 14 cells have playing different props Ive used 9 x 6 lOx 6 11 x 6 interchangably dramatic results motor does seem bothered wide range prop loads simply keeps pulling moreso bigger props course plane quite peppy 9 x 6 really blasts off 11 x 6 Thereafter boxy model design easily maintains 6OO7OO climb angle back off juice settles down its normal docile nature power dynamic range enormous flight thrill What also fun folks flight line react used seeing pussycat test REVOLTs much tiger photo shows both Jomar Mm-Max Lofty Pursuits LPSC-1 microprocessorcontrolled speed controls close footprint although latter thicker two members new breed controls have appeared during past year Ive flown both test Revolt different power systems has provided good performance results Highlights Mini Max somewhat departure Joe Utasi control optically coupled Since Im big fan opto-coupling aspect gave some pause However quite few flights its credit have QUI CKEE 500 CENTRAL stop shopping levels QUICKEE flying Competition 4 Engines4 Kits4 Accessories RossiOrbiterTru-Turn MVVSScat-CatAPC WebraRevolutionRev-Up JettDodgerK&B NelsonTexas OutlawWheels ASPSonic 500Tanks FoxThunderquickeeMotor Mounts $595 Shipping $595 COD hh 10% Discount Complete Airplane Packages SHo P 1-208-263-1614 BUDS HOBBY Questions UL SACHS POWER WALKER MACHiNE -. III 517 N Elizabeth P0 Box 777 Milton-Freewater OR 97862 503 938-6743 Fax 503 938-6950 Muminum Wheels Tires Wheels include bronze bearings fasteners Fits 5 1/4 inch tires $2400 Engine Test Run 58 Engine $62000 42 Engine $55000 32 Engine $47500 26 Engine $47500 $1200 Shipping September 1994 69 JOMAR ELECTRIC THROTTLES MINI-MAX 1-16 cells 30A Max ONLY throttle doesnt lie about its weight! 1 ounces Exactly High rate soft start Automatic set-u p 2 MOSEETs throttle 1 Brake Auto shut down loss signal Throttle Guard keeps motor off power up Signal-Hold eliminates nuiscance surges Extensive software signal processing COMPLETELY eliminates glitches Works ferrite stock EAI Cobalt motors 010 15 size Dont fooled imposters Buy best Joinar name can trust1 Measures 1 X 15 X 55! $7995 till year end SM-4 SPORT 7-24 cells 40A Max the rest compared to! production since 1989 thousands currently use working reliably! Uses standard IC circuitry no computers achieve reliable glitch free performance 1 15/16 X 1 9/16 X 5/16 weighs 14 ounces COMPLETE Optical isolation high rate soft start NO brake Perfect larger sport type electric aircraft Smooth proportional control RPM Easy adjustment match transmitter Now priced $8995 till year end Now can enjoy classic less! MAXCELL 12-40 cells 50A Max fly 40 60 90 some big un port control Computer smart button setup Only 2 ounces light 5-100 volt MOSFETS brake Still $149 JOMAR PRODtJCTS 3440 RIVERHILLS DR CINTI OH 45244 513-271-3903 Other kits availablePrices Subjec o Change Starchaser CanardDealer Inquires come Canard StickMade Ame ca ILIGHTECH MODELS INC Ducted Fan Jets 1441 N Maytair Rd Milwaukee WI 53226 USA Ph 414-257-1923 Fax 414-771-2092Oatalog$2OQUSDMCd aLt LDM Industries Inc Quality li/C Model Pmducts e 1984 NO-HEAT Trim Solvent Takes hassle out Monokote trim work HT Bonds Monokote over Monokote heat Eliminates ugly bubbles wrinkles Completely fuel-proof easy use Allows time position trim pieces Also works Ultracote Oracover NO-HEAT Trim Solvent Part #9500$695 Other Great Products LDM STRONGBOX Part #8000$795To order send check money STRONGBOX LI Part #81 00$1195order including $300 S & H LtNI Industries Inc BALL BEARFNG SERVO CONVERSIONKITSPO Box 292396 Dept 2 Futaba 4-pack Part #9600$2995 pa FL 33687-2396 Futaba Single Part #9610$795 one 813-991-4277 Airtronics 4-pack Part #9700$2995 ax 813-991-4810 Ajrtronics Single Part #9710$795Florida residents add 6 1/2S sales tax JR / Hitec 4-pack Part #9800$2095VISA MASTER CARD Accepted JR Hitec Single Part #9810 s LDM Industries Inc experienced no perceptible glitching controleven tried hard find make some would have thought possible hut such case far experience course radios other conditions can affect outcome control works just great reason smart microprocessor-controlled signal-handling routine later met Doug Ingraham Lofty Pursuits 93 KRC meet Hes very gentlemanly fellow wanted offer opportunity try speed controls Knowing penchant opto-coupling sure good idea talked told him always try fair game So now Im flying wont give up Doug approached ever-worrisome motor-noise problem different manner addition microprocessor monitoring valid signals unit has designed-in ferrite filters line chokes instead opto coupling signal leads serve attenuate electrical motor noise path similar prototype Ace control have Anyway Ive flying LPSC-1 excellent results well nice feature literature Doug provides its like mini-course speedcontrol installation modification operation maintenance distinct advantage associated somewhat larger volume LPSC-1 its built conventional discrete components modelers can handle repairs instructions available parts Lofty like tinker So ends 11th Anniversary column Please include SASE correspondence youd like reply Happy Safe Quiet Electric Landings Everyone TO Magazine Aircraft Builder whole new world awaits pages EAAs Experimenter magazine Learn build kitplane ultralight pilot yourself See what other EAA members building Get latest aviation news information Plus techniques composite woo metal tube fabric applications Regular features include ShopTalk HotLine Hints Homebuilders moreall packed monthly issue Experimenter 70 Model Aviation SCALE LONG EL 1/4 SCALES Lnglne Radio 4 nanneIs. S1O995S&H EAA Experimenter BUILD AIRCRAFT YOU CAN FLY
Edition: Model Aviation - 1994/09
Page Numbers: 65, 66, 68, 69, 70
RADIO CONTROL ELECTRICS THIS COLUMN has two meet announcements Electric Connection June errata new info motor control efficiency Astros philosophy brush/brushless scene neat new Astro VII meter Baylor Electric Products news flying own Aveox motor introductory look Joamr Mini Max Lofty Pursuits speed controls Westmoreland PA Electric Soaring Society WESS annual Electric fly-In August 14 Details still development theyll firm time read Check CD George Minnear 118 Jay Drive Verona PA 15147 Tel 412 793-3965 Everything need know about 94 Fifteenth KRC Electric Fly available six-page mailer Electric Fly Manager Rich Samuels 716 Shadywood Drive Perkasie PA 18944 Tel home 215 257-5593 work 215 822-3238 ext 2456 wishing participate popular All-Up/Last-Down event call KRC Hotline 215 234-4618 preregistration frequency allocation Remember year s activities span three days September 16-18 See April column SR Friday Symposium/Night Fly details Electric Connection Service happily announces availability large field Electric sailplane use Zephyrhills Florida about 30 miles north Tampa Larry Doris Bumette Country Crafts Hobbies provided information hobby shop carries large inventory Electric goodies can call em 813 782-9166 info field shop June column misprint graph caption page 81 caption should read Battery Current. Motor Current Having just referenced June graph showing difference battery current drain frame rate high rate speed controls Id now like expand subject months graphs differ Junes several ways direct result reader letter reader felt high rate controls very efficient preferred different approach pursuing point because likes fly All-Up/Last-Down events found controlling motor series/parallel switching battery pack see MA February 93 resulted much longer duration could accept some advantage pack switching could accept degree difference described So just prove point find out otherwise outcome study graphs actually offer same information currentdrain perspective power-drain perspective characterize Astro 15 direct drive Rev-Up 8 x 4 under different conditions two three-curve sets show performance motor/prop combo controlled directly applied variable voltage framerate speed control high-rate speed control combinations run over approximately same rpm range information represented solid line both graphs motor driven variable voltage supply labels direct drive direct power Data taken during run-up includes motor voltage current rpmautomatically computer logged motor powered ramped power supply over two-minute period Its smoother display points would result motor run up cell time cells Think reference data against other two curves can compared continued experiment using frame-rate control operating fixed 12V supply As previous column presentations speed control automatically swept full off full supply battery current rpm data being automatically acquired graphs open-circle points reflect Note rpm range supply current battery current drain essentially same both no control direct power drive frame-rate control Putting another way solid current/rpm curve opens circles nearly overlay other first glance result might convey happy message currents same dont fooled Look power drain curves readily see real story Because supply voltage varied zero full value direct-power case always 12 volts frame-rate control case power demand supply former much lower average same rpm same current power drain supply voltage x supply current higher frame-rate speed control since supply voltage always constant full-value number extra power goes heating motor battery pack power never gets prop power available flight wasted power Now high-rate control case depicted solid-circle data points too powered constant 12 volts Note average power drain well below frame-rate example given rpm Ifs quite low direct-voltage-drive case questioning reader actually little bit right Indeed speed control efficient varying battery pack makeup pack switching However suspected things nearly bad September1994 65 00 C010Z~0C0fl3 C3w3w333wro CCCCCCC 01w 0~I n~ ~CC01 cvwi01 CC----- .. ~ ~0 C oC33 C0130 33303030 30 01 CC3- 3330 30 3G3C&3CC"t3 Z trt0 aC0 303 CO 30013-3 3CC-C-313103103031031 3003OC33310000.J030 0CCO30(00C ~3Cc3033000CC30C0130CCCe 0101 CCCrZ- -z ct0000000000033 C 00330C 330330 3131 0a3033C3310CCaw00-3-JtoaCa sC30t00~i34 33000000 0101r010CCra 3300111333OCr Oa003Ua01330fl003303333fl - - 0101aCOW OC C C C C 0 CCC 01 ,0C-3C-303 -CCC0C0C00CCC313t3-4C01jtJC31CCCO 310 3 C3103110013(31 33130C31 33030003030313131C 03003003303-3 0J~-3 4 33 3131 30030000031 3313131 0 33033030300303030303 a30O~30o30o30-304C 30C3030313 3000300300 33030 300000 0 0030 30 3030 3000 C3030300C 00 0330030 30000030C030000 00000 00 033300 oDo 01a 0 013 OTHERSIZESAVAILABLE F01 C 0 3Ca 001000N 00030 3330COC CCCaa C0-Ja 303010J 60103300330 3030 ICCO Z0 30 fl1-CCC30 0 ~ r33 rnmN555C5X000000000000 0000000 4SS -- E CO 1 0310 O 3 -030C04 0 063C03003 000030O0oo 0000030 0013O3C0 Coo 00 C 003 CO 0033003300 3030 030031 3 00300000 C ii CD -I CD ii rn 0 -I z C 0 rn 0 0 z -I ii CD -I w ICD CD -I CD 1 0 -I 0 z C C z -I rn ii 0 CD -u rTi 0 -L 0 0 0 i 3 DO n FJ c O O-t -3 en no o 0 00 0 0 CD CD w 0 CO 0 0 en en CD CD 0-I en neD 0 CDW CD C 5 0 0 0 en 0 0 0 0 0 en en 0 2 0 0 0 0 2 0 0 g- 06 ~ -l 301 0 6 -- 0 6 06 030 0 0 2306 0 0 0 0--3 0 02 6 0 0 6 0 0 02~ 0 - 0 0 00 0 0- 00 0 0 0 0 - 2 0 13 6 10 3000-600 0 - - 0- 6 2 0~ 0 06 0 6~ 00 00~0-- -00 0-300 020~0 3000000 030 0-00-0 30 00-0-6 2 0- 030 2 60 00030 00- o T0 0 6 60 o~ 00-0oo 10630-203 3000100 l00 6000 06~l1O~ 0 0 D 0 0 2 43 C, 2 ~0 ii 430 02 gb Ofl 0-0 01 cm 01-0 00 010 cnZ 011J1- C o M 00-Jz 3 00 p oro DZ wm 0 0-- C -iF cn 0 013 C- faster would appropriate smaller prop would consistent higher rpm resulting increased cell count Okay Electric heavieswhat about last column also described Astro has brought constant innovation Electric two decades photo month shows perfect example Astro has recently announced minisized digital voltlammeter Model 100 intended insert in-line motor speed controL/motor combination measure actual circuit voltage current Volts Amps selected switch unit both pieces information quickly obtained According instruction sheet voltmeter range 60 volts ammeter range 60 ampsadequate virtually power systems use unit derives its operating power motor circuit no internal meter battery needed Astro connectors supplied wiring short heavy virtually no power loss instrument use Mine works just great strongly recommend serious Electric fliers give item high priority Santa lists $6995 list its good buy Hint make some adapter cords use voltmeter quick check receiver transmitter packs too As mentioned last month Brad Baylor Baylor Electric Products has joined forces Aveox continuing BEP BEPs new address ox 1576 Agoura CA 91376 Tel 800 255- 5237 orders literature requests 818 878-9147 technical assistance no overlap conflict interest new arrangement Brad will developing new products Aveox new BEP products well will compete other example Brad working new microprocessor-based motor control Axeox brushless motor part Aveox same time hes expanding own microprocessor speed control line regular motors part BEP since Aveox conventional bmshed motor business 68 Model Aviation us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door seq uancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have indep endant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$57900 including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 842 1703 Dealer inguirieswelcomeAll prices US fundsShipping valves & cylinders $450 other Electric goodies way too Incidentally just began flying BEP Micro-FET LV speed control amazingly flexible design offering kinds programmability think control offers features per dollar product Ive seen including exponential option like very much see MA 594 7-21 cell control sells $6995 higher-voltage version $8995 have tell Im having great time flying Aveox 1412/7 motor Ive since last fall didnt really get much air time till spring Ive dedicated four Revolt s otherwise docile test airplane quite thrill motor Im currently using 14 cells have playing different props Ive used 9 x 6 lOx 6 11 x 6 interchangably dramatic results motor does seem bothered wide range prop loads simply keeps pulling moreso bigger props course plane quite peppy 9 x 6 really blasts off 11 x 6 Thereafter boxy model design easily maintains 6OO7OO climb angle back off juice settles down its normal docile nature power dynamic range enormous flight thrill What also fun folks flight line react used seeing pussycat test REVOLTs much tiger photo shows both Jomar Mm-Max Lofty Pursuits LPSC-1 microprocessorcontrolled speed controls close footprint although latter thicker two members new breed controls have appeared during past year Ive flown both test Revolt different power systems has provided good performance results Highlights Mini Max somewhat departure Joe Utasi control optically coupled Since Im big fan opto-coupling aspect gave some pause However quite few flights its credit have QUI CKEE 500 CENTRAL stop shopping levels QUICKEE flying Competition 4 Engines4 Kits4 Accessories RossiOrbiterTru-Turn MVVSScat-CatAPC WebraRevolutionRev-Up JettDodgerK&B NelsonTexas OutlawWheels ASPSonic 500Tanks FoxThunderquickeeMotor Mounts $595 Shipping $595 COD hh 10% Discount Complete Airplane Packages SHo P 1-208-263-1614 BUDS HOBBY Questions UL SACHS POWER WALKER MACHiNE -. III 517 N Elizabeth P0 Box 777 Milton-Freewater OR 97862 503 938-6743 Fax 503 938-6950 Muminum Wheels Tires Wheels include bronze bearings fasteners Fits 5 1/4 inch tires $2400 Engine Test Run 58 Engine $62000 42 Engine $55000 32 Engine $47500 26 Engine $47500 $1200 Shipping September 1994 69 JOMAR ELECTRIC THROTTLES MINI-MAX 1-16 cells 30A Max ONLY throttle doesnt lie about its weight! 1 ounces Exactly High rate soft start Automatic set-u p 2 MOSEETs throttle 1 Brake Auto shut down loss signal Throttle Guard keeps motor off power up Signal-Hold eliminates nuiscance surges Extensive software signal processing COMPLETELY eliminates glitches Works ferrite stock EAI Cobalt motors 010 15 size Dont fooled imposters Buy best Joinar name can trust1 Measures 1 X 15 X 55! $7995 till year end SM-4 SPORT 7-24 cells 40A Max the rest compared to! production since 1989 thousands currently use working reliably! Uses standard IC circuitry no computers achieve reliable glitch free performance 1 15/16 X 1 9/16 X 5/16 weighs 14 ounces COMPLETE Optical isolation high rate soft start NO brake Perfect larger sport type electric aircraft Smooth proportional control RPM Easy adjustment match transmitter Now priced $8995 till year end Now can enjoy classic less! MAXCELL 12-40 cells 50A Max fly 40 60 90 some big un port control Computer smart button setup Only 2 ounces light 5-100 volt MOSFETS brake Still $149 JOMAR PRODtJCTS 3440 RIVERHILLS DR CINTI OH 45244 513-271-3903 Other kits availablePrices Subjec o Change Starchaser CanardDealer Inquires come Canard StickMade Ame ca ILIGHTECH MODELS INC Ducted Fan Jets 1441 N Maytair Rd Milwaukee WI 53226 USA Ph 414-257-1923 Fax 414-771-2092Oatalog$2OQUSDMCd aLt LDM Industries Inc Quality li/C Model Pmducts e 1984 NO-HEAT Trim Solvent Takes hassle out Monokote trim work HT Bonds Monokote over Monokote heat Eliminates ugly bubbles wrinkles Completely fuel-proof easy use Allows time position trim pieces Also works Ultracote Oracover NO-HEAT Trim Solvent Part #9500$695 Other Great Products LDM STRONGBOX Part #8000$795To order send check money STRONGBOX LI Part #81 00$1195order including $300 S & H LtNI Industries Inc BALL BEARFNG SERVO CONVERSIONKITSPO Box 292396 Dept 2 Futaba 4-pack Part #9600$2995 pa FL 33687-2396 Futaba Single Part #9610$795 one 813-991-4277 Airtronics 4-pack Part #9700$2995 ax 813-991-4810 Ajrtronics Single Part #9710$795Florida residents add 6 1/2S sales tax JR / Hitec 4-pack Part #9800$2095VISA MASTER CARD Accepted JR Hitec Single Part #9810 s LDM Industries Inc experienced no perceptible glitching controleven tried hard find make some would have thought possible hut such case far experience course radios other conditions can affect outcome control works just great reason smart microprocessor-controlled signal-handling routine later met Doug Ingraham Lofty Pursuits 93 KRC meet Hes very gentlemanly fellow wanted offer opportunity try speed controls Knowing penchant opto-coupling sure good idea talked told him always try fair game So now Im flying wont give up Doug approached ever-worrisome motor-noise problem different manner addition microprocessor monitoring valid signals unit has designed-in ferrite filters line chokes instead opto coupling signal leads serve attenuate electrical motor noise path similar prototype Ace control have Anyway Ive flying LPSC-1 excellent results well nice feature literature Doug provides its like mini-course speedcontrol installation modification operation maintenance distinct advantage associated somewhat larger volume LPSC-1 its built conventional discrete components modelers can handle repairs instructions available parts Lofty like tinker So ends 11th Anniversary column Please include SASE correspondence youd like reply Happy Safe Quiet Electric Landings Everyone TO Magazine Aircraft Builder whole new world awaits pages EAAs Experimenter magazine Learn build kitplane ultralight pilot yourself See what other EAA members building Get latest aviation news information Plus techniques composite woo metal tube fabric applications Regular features include ShopTalk HotLine Hints Homebuilders moreall packed monthly issue Experimenter 70 Model Aviation SCALE LONG EL 1/4 SCALES Lnglne Radio 4 nanneIs. S1O995S&H EAA Experimenter BUILD AIRCRAFT YOU CAN FLY
Edition: Model Aviation - 1994/09
Page Numbers: 65, 66, 68, 69, 70
RADIO CONTROL ELECTRICS THIS COLUMN has two meet announcements Electric Connection June errata new info motor control efficiency Astros philosophy brush/brushless scene neat new Astro VII meter Baylor Electric Products news flying own Aveox motor introductory look Joamr Mini Max Lofty Pursuits speed controls Westmoreland PA Electric Soaring Society WESS annual Electric fly-In August 14 Details still development theyll firm time read Check CD George Minnear 118 Jay Drive Verona PA 15147 Tel 412 793-3965 Everything need know about 94 Fifteenth KRC Electric Fly available six-page mailer Electric Fly Manager Rich Samuels 716 Shadywood Drive Perkasie PA 18944 Tel home 215 257-5593 work 215 822-3238 ext 2456 wishing participate popular All-Up/Last-Down event call KRC Hotline 215 234-4618 preregistration frequency allocation Remember year s activities span three days September 16-18 See April column SR Friday Symposium/Night Fly details Electric Connection Service happily announces availability large field Electric sailplane use Zephyrhills Florida about 30 miles north Tampa Larry Doris Bumette Country Crafts Hobbies provided information hobby shop carries large inventory Electric goodies can call em 813 782-9166 info field shop June column misprint graph caption page 81 caption should read Battery Current. Motor Current Having just referenced June graph showing difference battery current drain frame rate high rate speed controls Id now like expand subject months graphs differ Junes several ways direct result reader letter reader felt high rate controls very efficient preferred different approach pursuing point because likes fly All-Up/Last-Down events found controlling motor series/parallel switching battery pack see MA February 93 resulted much longer duration could accept some advantage pack switching could accept degree difference described So just prove point find out otherwise outcome study graphs actually offer same information currentdrain perspective power-drain perspective characterize Astro 15 direct drive Rev-Up 8 x 4 under different conditions two three-curve sets show performance motor/prop combo controlled directly applied variable voltage framerate speed control high-rate speed control combinations run over approximately same rpm range information represented solid line both graphs motor driven variable voltage supply labels direct drive direct power Data taken during run-up includes motor voltage current rpmautomatically computer logged motor powered ramped power supply over two-minute period Its smoother display points would result motor run up cell time cells Think reference data against other two curves can compared continued experiment using frame-rate control operating fixed 12V supply As previous column presentations speed control automatically swept full off full supply battery current rpm data being automatically acquired graphs open-circle points reflect Note rpm range supply current battery current drain essentially same both no control direct power drive frame-rate control Putting another way solid current/rpm curve opens circles nearly overlay other first glance result might convey happy message currents same dont fooled Look power drain curves readily see real story Because supply voltage varied zero full value direct-power case always 12 volts frame-rate control case power demand supply former much lower average same rpm same current power drain supply voltage x supply current higher frame-rate speed control since supply voltage always constant full-value number extra power goes heating motor battery pack power never gets prop power available flight wasted power Now high-rate control case depicted solid-circle data points too powered constant 12 volts Note average power drain well below frame-rate example given rpm Ifs quite low direct-voltage-drive case questioning reader actually little bit right Indeed speed control efficient varying battery pack makeup pack switching However suspected things nearly bad September1994 65 00 C010Z~0C0fl3 C3w3w333wro CCCCCCC 01w 0~I n~ ~CC01 cvwi01 CC----- .. ~ ~0 C oC33 C0130 33303030 30 01 CC3- 3330 30 3G3C&3CC"t3 Z trt0 aC0 303 CO 30013-3 3CC-C-313103103031031 3003OC33310000.J030 0CCO30(00C ~3Cc3033000CC30C0130CCCe 0101 CCCrZ- -z ct0000000000033 C 00330C 330330 3131 0a3033C3310CCaw00-3-JtoaCa sC30t00~i34 33000000 0101r010CCra 3300111333OCr Oa003Ua01330fl003303333fl - - 0101aCOW OC C C C C 0 CCC 01 ,0C-3C-303 -CCC0C0C00CCC313t3-4C01jtJC31CCCO 310 3 C3103110013(31 33130C31 33030003030313131C 03003003303-3 0J~-3 4 33 3131 30030000031 3313131 0 33033030300303030303 a30O~30o30o30-304C 30C3030313 3000300300 33030 300000 0 0030 30 3030 3000 C3030300C 00 0330030 30000030C030000 00000 00 033300 oDo 01a 0 013 OTHERSIZESAVAILABLE F01 C 0 3Ca 001000N 00030 3330COC CCCaa C0-Ja 303010J 60103300330 3030 ICCO Z0 30 fl1-CCC30 0 ~ r33 rnmN555C5X000000000000 0000000 4SS -- E CO 1 0310 O 3 -030C04 0 063C03003 000030O0oo 0000030 0013O3C0 Coo 00 C 003 CO 0033003300 3030 030031 3 00300000 C ii CD -I CD ii rn 0 -I z C 0 rn 0 0 z -I ii CD -I w ICD CD -I CD 1 0 -I 0 z C C z -I rn ii 0 CD -u rTi 0 -L 0 0 0 i 3 DO n FJ c O O-t -3 en no o 0 00 0 0 CD CD w 0 CO 0 0 en en CD CD 0-I en neD 0 CDW CD C 5 0 0 0 en 0 0 0 0 0 en en 0 2 0 0 0 0 2 0 0 g- 06 ~ -l 301 0 6 -- 0 6 06 030 0 0 2306 0 0 0 0--3 0 02 6 0 0 6 0 0 02~ 0 - 0 0 00 0 0- 00 0 0 0 0 - 2 0 13 6 10 3000-600 0 - - 0- 6 2 0~ 0 06 0 6~ 00 00~0-- -00 0-300 020~0 3000000 030 0-00-0 30 00-0-6 2 0- 030 2 60 00030 00- o T0 0 6 60 o~ 00-0oo 10630-203 3000100 l00 6000 06~l1O~ 0 0 D 0 0 2 43 C, 2 ~0 ii 430 02 gb Ofl 0-0 01 cm 01-0 00 010 cnZ 011J1- C o M 00-Jz 3 00 p oro DZ wm 0 0-- C -iF cn 0 013 C- faster would appropriate smaller prop would consistent higher rpm resulting increased cell count Okay Electric heavieswhat about last column also described Astro has brought constant innovation Electric two decades photo month shows perfect example Astro has recently announced minisized digital voltlammeter Model 100 intended insert in-line motor speed controL/motor combination measure actual circuit voltage current Volts Amps selected switch unit both pieces information quickly obtained According instruction sheet voltmeter range 60 volts ammeter range 60 ampsadequate virtually power systems use unit derives its operating power motor circuit no internal meter battery needed Astro connectors supplied wiring short heavy virtually no power loss instrument use Mine works just great strongly recommend serious Electric fliers give item high priority Santa lists $6995 list its good buy Hint make some adapter cords use voltmeter quick check receiver transmitter packs too As mentioned last month Brad Baylor Baylor Electric Products has joined forces Aveox continuing BEP BEPs new address ox 1576 Agoura CA 91376 Tel 800 255- 5237 orders literature requests 818 878-9147 technical assistance no overlap conflict interest new arrangement Brad will developing new products Aveox new BEP products well will compete other example Brad working new microprocessor-based motor control Axeox brushless motor part Aveox same time hes expanding own microprocessor speed control line regular motors part BEP since Aveox conventional bmshed motor business 68 Model Aviation us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door seq uancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have indep endant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$57900 including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 842 1703 Dealer inguirieswelcomeAll prices US fundsShipping valves & cylinders $450 other Electric goodies way too Incidentally just began flying BEP Micro-FET LV speed control amazingly flexible design offering kinds programmability think control offers features per dollar product Ive seen including exponential option like very much see MA 594 7-21 cell control sells $6995 higher-voltage version $8995 have tell Im having great time flying Aveox 1412/7 motor Ive since last fall didnt really get much air time till spring Ive dedicated four Revolt s otherwise docile test airplane quite thrill motor Im currently using 14 cells have playing different props Ive used 9 x 6 lOx 6 11 x 6 interchangably dramatic results motor does seem bothered wide range prop loads simply keeps pulling moreso bigger props course plane quite peppy 9 x 6 really blasts off 11 x 6 Thereafter boxy model design easily maintains 6OO7OO climb angle back off juice settles down its normal docile nature power dynamic range enormous flight thrill What also fun folks flight line react used seeing pussycat test REVOLTs much tiger photo shows both Jomar Mm-Max Lofty Pursuits LPSC-1 microprocessorcontrolled speed controls close footprint although latter thicker two members new breed controls have appeared during past year Ive flown both test Revolt different power systems has provided good performance results Highlights Mini Max somewhat departure Joe Utasi control optically coupled Since Im big fan opto-coupling aspect gave some pause However quite few flights its credit have QUI CKEE 500 CENTRAL stop shopping levels QUICKEE flying Competition 4 Engines4 Kits4 Accessories RossiOrbiterTru-Turn MVVSScat-CatAPC WebraRevolutionRev-Up JettDodgerK&B NelsonTexas OutlawWheels ASPSonic 500Tanks FoxThunderquickeeMotor Mounts $595 Shipping $595 COD hh 10% Discount Complete Airplane Packages SHo P 1-208-263-1614 BUDS HOBBY Questions UL SACHS POWER WALKER MACHiNE -. III 517 N Elizabeth P0 Box 777 Milton-Freewater OR 97862 503 938-6743 Fax 503 938-6950 Muminum Wheels Tires Wheels include bronze bearings fasteners Fits 5 1/4 inch tires $2400 Engine Test Run 58 Engine $62000 42 Engine $55000 32 Engine $47500 26 Engine $47500 $1200 Shipping September 1994 69 JOMAR ELECTRIC THROTTLES MINI-MAX 1-16 cells 30A Max ONLY throttle doesnt lie about its weight! 1 ounces Exactly High rate soft start Automatic set-u p 2 MOSEETs throttle 1 Brake Auto shut down loss signal Throttle Guard keeps motor off power up Signal-Hold eliminates nuiscance surges Extensive software signal processing COMPLETELY eliminates glitches Works ferrite stock EAI Cobalt motors 010 15 size Dont fooled imposters Buy best Joinar name can trust1 Measures 1 X 15 X 55! $7995 till year end SM-4 SPORT 7-24 cells 40A Max the rest compared to! production since 1989 thousands currently use working reliably! Uses standard IC circuitry no computers achieve reliable glitch free performance 1 15/16 X 1 9/16 X 5/16 weighs 14 ounces COMPLETE Optical isolation high rate soft start NO brake Perfect larger sport type electric aircraft Smooth proportional control RPM Easy adjustment match transmitter Now priced $8995 till year end Now can enjoy classic less! MAXCELL 12-40 cells 50A Max fly 40 60 90 some big un port control Computer smart button setup Only 2 ounces light 5-100 volt MOSFETS brake Still $149 JOMAR PRODtJCTS 3440 RIVERHILLS DR CINTI OH 45244 513-271-3903 Other kits availablePrices Subjec o Change Starchaser CanardDealer Inquires come Canard StickMade Ame ca ILIGHTECH MODELS INC Ducted Fan Jets 1441 N Maytair Rd Milwaukee WI 53226 USA Ph 414-257-1923 Fax 414-771-2092Oatalog$2OQUSDMCd aLt LDM Industries Inc Quality li/C Model Pmducts e 1984 NO-HEAT Trim Solvent Takes hassle out Monokote trim work HT Bonds Monokote over Monokote heat Eliminates ugly bubbles wrinkles Completely fuel-proof easy use Allows time position trim pieces Also works Ultracote Oracover NO-HEAT Trim Solvent Part #9500$695 Other Great Products LDM STRONGBOX Part #8000$795To order send check money STRONGBOX LI Part #81 00$1195order including $300 S & H LtNI Industries Inc BALL BEARFNG SERVO CONVERSIONKITSPO Box 292396 Dept 2 Futaba 4-pack Part #9600$2995 pa FL 33687-2396 Futaba Single Part #9610$795 one 813-991-4277 Airtronics 4-pack Part #9700$2995 ax 813-991-4810 Ajrtronics Single Part #9710$795Florida residents add 6 1/2S sales tax JR / Hitec 4-pack Part #9800$2095VISA MASTER CARD Accepted JR Hitec Single Part #9810 s LDM Industries Inc experienced no perceptible glitching controleven tried hard find make some would have thought possible hut such case far experience course radios other conditions can affect outcome control works just great reason smart microprocessor-controlled signal-handling routine later met Doug Ingraham Lofty Pursuits 93 KRC meet Hes very gentlemanly fellow wanted offer opportunity try speed controls Knowing penchant opto-coupling sure good idea talked told him always try fair game So now Im flying wont give up Doug approached ever-worrisome motor-noise problem different manner addition microprocessor monitoring valid signals unit has designed-in ferrite filters line chokes instead opto coupling signal leads serve attenuate electrical motor noise path similar prototype Ace control have Anyway Ive flying LPSC-1 excellent results well nice feature literature Doug provides its like mini-course speedcontrol installation modification operation maintenance distinct advantage associated somewhat larger volume LPSC-1 its built conventional discrete components modelers can handle repairs instructions available parts Lofty like tinker So ends 11th Anniversary column Please include SASE correspondence youd like reply Happy Safe Quiet Electric Landings Everyone TO Magazine Aircraft Builder whole new world awaits pages EAAs Experimenter magazine Learn build kitplane ultralight pilot yourself See what other EAA members building Get latest aviation news information Plus techniques composite woo metal tube fabric applications Regular features include ShopTalk HotLine Hints Homebuilders moreall packed monthly issue Experimenter 70 Model Aviation SCALE LONG EL 1/4 SCALES Lnglne Radio 4 nanneIs. S1O995S&H EAA Experimenter BUILD AIRCRAFT YOU CAN FLY
Edition: Model Aviation - 1994/09
Page Numbers: 65, 66, 68, 69, 70
RADIO CONTROL ELECTRICS THIS COLUMN has two meet announcements Electric Connection June errata new info motor control efficiency Astros philosophy brush/brushless scene neat new Astro VII meter Baylor Electric Products news flying own Aveox motor introductory look Joamr Mini Max Lofty Pursuits speed controls Westmoreland PA Electric Soaring Society WESS annual Electric fly-In August 14 Details still development theyll firm time read Check CD George Minnear 118 Jay Drive Verona PA 15147 Tel 412 793-3965 Everything need know about 94 Fifteenth KRC Electric Fly available six-page mailer Electric Fly Manager Rich Samuels 716 Shadywood Drive Perkasie PA 18944 Tel home 215 257-5593 work 215 822-3238 ext 2456 wishing participate popular All-Up/Last-Down event call KRC Hotline 215 234-4618 preregistration frequency allocation Remember year s activities span three days September 16-18 See April column SR Friday Symposium/Night Fly details Electric Connection Service happily announces availability large field Electric sailplane use Zephyrhills Florida about 30 miles north Tampa Larry Doris Bumette Country Crafts Hobbies provided information hobby shop carries large inventory Electric goodies can call em 813 782-9166 info field shop June column misprint graph caption page 81 caption should read Battery Current. Motor Current Having just referenced June graph showing difference battery current drain frame rate high rate speed controls Id now like expand subject months graphs differ Junes several ways direct result reader letter reader felt high rate controls very efficient preferred different approach pursuing point because likes fly All-Up/Last-Down events found controlling motor series/parallel switching battery pack see MA February 93 resulted much longer duration could accept some advantage pack switching could accept degree difference described So just prove point find out otherwise outcome study graphs actually offer same information currentdrain perspective power-drain perspective characterize Astro 15 direct drive Rev-Up 8 x 4 under different conditions two three-curve sets show performance motor/prop combo controlled directly applied variable voltage framerate speed control high-rate speed control combinations run over approximately same rpm range information represented solid line both graphs motor driven variable voltage supply labels direct drive direct power Data taken during run-up includes motor voltage current rpmautomatically computer logged motor powered ramped power supply over two-minute period Its smoother display points would result motor run up cell time cells Think reference data against other two curves can compared continued experiment using frame-rate control operating fixed 12V supply As previous column presentations speed control automatically swept full off full supply battery current rpm data being automatically acquired graphs open-circle points reflect Note rpm range supply current battery current drain essentially same both no control direct power drive frame-rate control Putting another way solid current/rpm curve opens circles nearly overlay other first glance result might convey happy message currents same dont fooled Look power drain curves readily see real story Because supply voltage varied zero full value direct-power case always 12 volts frame-rate control case power demand supply former much lower average same rpm same current power drain supply voltage x supply current higher frame-rate speed control since supply voltage always constant full-value number extra power goes heating motor battery pack power never gets prop power available flight wasted power Now high-rate control case depicted solid-circle data points too powered constant 12 volts Note average power drain well below frame-rate example given rpm Ifs quite low direct-voltage-drive case questioning reader actually little bit right Indeed speed control efficient varying battery pack makeup pack switching However suspected things nearly bad September1994 65 00 C010Z~0C0fl3 C3w3w333wro CCCCCCC 01w 0~I n~ ~CC01 cvwi01 CC----- .. ~ ~0 C oC33 C0130 33303030 30 01 CC3- 3330 30 3G3C&3CC"t3 Z trt0 aC0 303 CO 30013-3 3CC-C-313103103031031 3003OC33310000.J030 0CCO30(00C ~3Cc3033000CC30C0130CCCe 0101 CCCrZ- -z ct0000000000033 C 00330C 330330 3131 0a3033C3310CCaw00-3-JtoaCa sC30t00~i34 33000000 0101r010CCra 3300111333OCr Oa003Ua01330fl003303333fl - - 0101aCOW OC C C C C 0 CCC 01 ,0C-3C-303 -CCC0C0C00CCC313t3-4C01jtJC31CCCO 310 3 C3103110013(31 33130C31 33030003030313131C 03003003303-3 0J~-3 4 33 3131 30030000031 3313131 0 33033030300303030303 a30O~30o30o30-304C 30C3030313 3000300300 33030 300000 0 0030 30 3030 3000 C3030300C 00 0330030 30000030C030000 00000 00 033300 oDo 01a 0 013 OTHERSIZESAVAILABLE F01 C 0 3Ca 001000N 00030 3330COC CCCaa C0-Ja 303010J 60103300330 3030 ICCO Z0 30 fl1-CCC30 0 ~ r33 rnmN555C5X000000000000 0000000 4SS -- E CO 1 0310 O 3 -030C04 0 063C03003 000030O0oo 0000030 0013O3C0 Coo 00 C 003 CO 0033003300 3030 030031 3 00300000 C ii CD -I CD ii rn 0 -I z C 0 rn 0 0 z -I ii CD -I w ICD CD -I CD 1 0 -I 0 z C C z -I rn ii 0 CD -u rTi 0 -L 0 0 0 i 3 DO n FJ c O O-t -3 en no o 0 00 0 0 CD CD w 0 CO 0 0 en en CD CD 0-I en neD 0 CDW CD C 5 0 0 0 en 0 0 0 0 0 en en 0 2 0 0 0 0 2 0 0 g- 06 ~ -l 301 0 6 -- 0 6 06 030 0 0 2306 0 0 0 0--3 0 02 6 0 0 6 0 0 02~ 0 - 0 0 00 0 0- 00 0 0 0 0 - 2 0 13 6 10 3000-600 0 - - 0- 6 2 0~ 0 06 0 6~ 00 00~0-- -00 0-300 020~0 3000000 030 0-00-0 30 00-0-6 2 0- 030 2 60 00030 00- o T0 0 6 60 o~ 00-0oo 10630-203 3000100 l00 6000 06~l1O~ 0 0 D 0 0 2 43 C, 2 ~0 ii 430 02 gb Ofl 0-0 01 cm 01-0 00 010 cnZ 011J1- C o M 00-Jz 3 00 p oro DZ wm 0 0-- C -iF cn 0 013 C- faster would appropriate smaller prop would consistent higher rpm resulting increased cell count Okay Electric heavieswhat about last column also described Astro has brought constant innovation Electric two decades photo month shows perfect example Astro has recently announced minisized digital voltlammeter Model 100 intended insert in-line motor speed controL/motor combination measure actual circuit voltage current Volts Amps selected switch unit both pieces information quickly obtained According instruction sheet voltmeter range 60 volts ammeter range 60 ampsadequate virtually power systems use unit derives its operating power motor circuit no internal meter battery needed Astro connectors supplied wiring short heavy virtually no power loss instrument use Mine works just great strongly recommend serious Electric fliers give item high priority Santa lists $6995 list its good buy Hint make some adapter cords use voltmeter quick check receiver transmitter packs too As mentioned last month Brad Baylor Baylor Electric Products has joined forces Aveox continuing BEP BEPs new address ox 1576 Agoura CA 91376 Tel 800 255- 5237 orders literature requests 818 878-9147 technical assistance no overlap conflict interest new arrangement Brad will developing new products Aveox new BEP products well will compete other example Brad working new microprocessor-based motor control Axeox brushless motor part Aveox same time hes expanding own microprocessor speed control line regular motors part BEP since Aveox conventional bmshed motor business 68 Model Aviation us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door seq uancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have indep endant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$57900 including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 842 1703 Dealer inguirieswelcomeAll prices US fundsShipping valves & cylinders $450 other Electric goodies way too Incidentally just began flying BEP Micro-FET LV speed control amazingly flexible design offering kinds programmability think control offers features per dollar product Ive seen including exponential option like very much see MA 594 7-21 cell control sells $6995 higher-voltage version $8995 have tell Im having great time flying Aveox 1412/7 motor Ive since last fall didnt really get much air time till spring Ive dedicated four Revolt s otherwise docile test airplane quite thrill motor Im currently using 14 cells have playing different props Ive used 9 x 6 lOx 6 11 x 6 interchangably dramatic results motor does seem bothered wide range prop loads simply keeps pulling moreso bigger props course plane quite peppy 9 x 6 really blasts off 11 x 6 Thereafter boxy model design easily maintains 6OO7OO climb angle back off juice settles down its normal docile nature power dynamic range enormous flight thrill What also fun folks flight line react used seeing pussycat test REVOLTs much tiger photo shows both Jomar Mm-Max Lofty Pursuits LPSC-1 microprocessorcontrolled speed controls close footprint although latter thicker two members new breed controls have appeared during past year Ive flown both test Revolt different power systems has provided good performance results Highlights Mini Max somewhat departure Joe Utasi control optically coupled Since Im big fan opto-coupling aspect gave some pause However quite few flights its credit have QUI CKEE 500 CENTRAL stop shopping levels QUICKEE flying Competition 4 Engines4 Kits4 Accessories RossiOrbiterTru-Turn MVVSScat-CatAPC WebraRevolutionRev-Up JettDodgerK&B NelsonTexas OutlawWheels ASPSonic 500Tanks FoxThunderquickeeMotor Mounts $595 Shipping $595 COD hh 10% Discount Complete Airplane Packages SHo P 1-208-263-1614 BUDS HOBBY Questions UL SACHS POWER WALKER MACHiNE -. III 517 N Elizabeth P0 Box 777 Milton-Freewater OR 97862 503 938-6743 Fax 503 938-6950 Muminum Wheels Tires Wheels include bronze bearings fasteners Fits 5 1/4 inch tires $2400 Engine Test Run 58 Engine $62000 42 Engine $55000 32 Engine $47500 26 Engine $47500 $1200 Shipping September 1994 69 JOMAR ELECTRIC THROTTLES MINI-MAX 1-16 cells 30A Max ONLY throttle doesnt lie about its weight! 1 ounces Exactly High rate soft start Automatic set-u p 2 MOSEETs throttle 1 Brake Auto shut down loss signal Throttle Guard keeps motor off power up Signal-Hold eliminates nuiscance surges Extensive software signal processing COMPLETELY eliminates glitches Works ferrite stock EAI Cobalt motors 010 15 size Dont fooled imposters Buy best Joinar name can trust1 Measures 1 X 15 X 55! $7995 till year end SM-4 SPORT 7-24 cells 40A Max the rest compared to! production since 1989 thousands currently use working reliably! Uses standard IC circuitry no computers achieve reliable glitch free performance 1 15/16 X 1 9/16 X 5/16 weighs 14 ounces COMPLETE Optical isolation high rate soft start NO brake Perfect larger sport type electric aircraft Smooth proportional control RPM Easy adjustment match transmitter Now priced $8995 till year end Now can enjoy classic less! MAXCELL 12-40 cells 50A Max fly 40 60 90 some big un port control Computer smart button setup Only 2 ounces light 5-100 volt MOSFETS brake Still $149 JOMAR PRODtJCTS 3440 RIVERHILLS DR CINTI OH 45244 513-271-3903 Other kits availablePrices Subjec o Change Starchaser CanardDealer Inquires come Canard StickMade Ame ca ILIGHTECH MODELS INC Ducted Fan Jets 1441 N Maytair Rd Milwaukee WI 53226 USA Ph 414-257-1923 Fax 414-771-2092Oatalog$2OQUSDMCd aLt LDM Industries Inc Quality li/C Model Pmducts e 1984 NO-HEAT Trim Solvent Takes hassle out Monokote trim work HT Bonds Monokote over Monokote heat Eliminates ugly bubbles wrinkles Completely fuel-proof easy use Allows time position trim pieces Also works Ultracote Oracover NO-HEAT Trim Solvent Part #9500$695 Other Great Products LDM STRONGBOX Part #8000$795To order send check money STRONGBOX LI Part #81 00$1195order including $300 S & H LtNI Industries Inc BALL BEARFNG SERVO CONVERSIONKITSPO Box 292396 Dept 2 Futaba 4-pack Part #9600$2995 pa FL 33687-2396 Futaba Single Part #9610$795 one 813-991-4277 Airtronics 4-pack Part #9700$2995 ax 813-991-4810 Ajrtronics Single Part #9710$795Florida residents add 6 1/2S sales tax JR / Hitec 4-pack Part #9800$2095VISA MASTER CARD Accepted JR Hitec Single Part #9810 s LDM Industries Inc experienced no perceptible glitching controleven tried hard find make some would have thought possible hut such case far experience course radios other conditions can affect outcome control works just great reason smart microprocessor-controlled signal-handling routine later met Doug Ingraham Lofty Pursuits 93 KRC meet Hes very gentlemanly fellow wanted offer opportunity try speed controls Knowing penchant opto-coupling sure good idea talked told him always try fair game So now Im flying wont give up Doug approached ever-worrisome motor-noise problem different manner addition microprocessor monitoring valid signals unit has designed-in ferrite filters line chokes instead opto coupling signal leads serve attenuate electrical motor noise path similar prototype Ace control have Anyway Ive flying LPSC-1 excellent results well nice feature literature Doug provides its like mini-course speedcontrol installation modification operation maintenance distinct advantage associated somewhat larger volume LPSC-1 its built conventional discrete components modelers can handle repairs instructions available parts Lofty like tinker So ends 11th Anniversary column Please include SASE correspondence youd like reply Happy Safe Quiet Electric Landings Everyone TO Magazine Aircraft Builder whole new world awaits pages EAAs Experimenter magazine Learn build kitplane ultralight pilot yourself See what other EAA members building Get latest aviation news information Plus techniques composite woo metal tube fabric applications Regular features include ShopTalk HotLine Hints Homebuilders moreall packed monthly issue Experimenter 70 Model Aviation SCALE LONG EL 1/4 SCALES Lnglne Radio 4 nanneIs. S1O995S&H EAA Experimenter BUILD AIRCRAFT YOU CAN FLY