Goslow

I FAiIhLL U BRENT DANE Flaps landing gear too fast -jid circuit make em GOSLOW simple compact inexpensive circuit has designed can connected between receiver control servo regulates time required full servo rotation between 2 20 seconds reduction servos torque proportional device allows servo positioned anywhere within allowed servo travel fully supports adjustable travel volume available radio systems Todays modern servos reliable powerful smooth fast Boy fast time required t~I rii full 900 rotation typically varies between about /5 nd good news control functions such ailerons elevator rudder quick response results improved aircraft control However other control functions such landing gear retraction flap extension speed servo motion less critical fact often desirable slow control components increased realism some cases improved performance sudden lowering flaps full setting can cause airplane pitch upward balloon adding unwanted altitude flaps lowered slowly steadily models airspeed allowed gradually bleed off undesirable sudden nose-up attitude can prevented solution control flaps often done proportional channel provides continuous adjustment However typical modeler looking coordinated control make during critical landing approach Another common problem encountered servo-actuated retractable landing gear operates too quickly objection primarily related aesthetics doesnt look good although extension retraction gear sometimes does result noticeable vertical trim change airplane problem partly alleviated use specially designed 1800 landing gear servo travels somewhat slowly However servos significantly expensive regular servos still quite fast compared 5-10 second landing gear motion provides best realism Another objection landing gear servo proportional device moves between two fixed endpoints cannot set adjustable travel volume ATV controls transmitter Landing gear installation greatly simplified being able precisely adjust servo travel assure reliable gear locking up down position overdriving retract mechanism stalling servo What needed magic box sits between servo receiver take control input user accurately pass servo regulate maximum rate servo position could change should slow servo regulating control signal servonot reducing electrical power servo motor would equivalent slowly turning proportional control knob transmitter position another GOSLOW plugs between servo receiver draws very little power has adjustment controls servo speed between about 2 20 seconds full rotation finished circuit about 125 x 175 inches have specially designed circuit use very common components easily found local electronics supply availability should well assured foreseeable future device just landing gear flap control applications could also include opening 44 Model Aviation leted GOSLOW circuit board An etched board full kit less servoAuthors Global P-39 Airacobra has retractable connectors available authorsee textlanding gear initial motivation GOSLOW IMDL OW Description 133 ohm resistor 11k resistor 310k resistor 133k resistor 847k resistor 2220k resistor 1iM resistor 1100k horiz mount potentiometer 3470pF ceramic disk capacitor 2OlpF PC-mount capacitor 222p F radial-lead electrolytic capactor 1220pF radial-lead electrolytic capactor 2 MPS2222A npn transistor 1556 dual timer 1LM324 quad op-amp filtered voltage 8I41y~ RO Part##packages 271-007 271-1321 271-1335 271-1341 271-1342 271-1350 271-1356 271-284 272-125 272-1065 272-1026 272-956 276-2009 276-1728 276-1711 0001101 SIgeli C7 rRilt 1 1 1 1 2 2 1 2 1 2 1 1 R7 io Cs Ri4 FIGURE 2 m F DLE stors Ri R2 R3 R4 R5 R6 R7 R8 R9 RiO Ru R12 Ri 3 R14 RiS R16 R17 Ri 8 33 10k 47k 10k 47k 47k 47k 47k 47k 220k 1k 100k trim pot 10k k 220k 47k 47k iM Capacitors Cl22pF C2470pF C3470pF C4470pF CS220pF 06OlpE 0722pF 08OlpE Transistors Qi Q2 M PS2222A M PS2222A Integrated Cicuits 101 102 LM324 556 March 1996 45 U/1IcaIII ,/6RioRio11101 1C2IpihIp2V R4Rilt 12 RORi2 C3 Ru U v 0 ov v servo L FIGURE 4 02 Photoa author Graphic deaign Heather Erdahi Manu ltage voltage Signal Airtronicsblack/redblackblack JRredbrownorange ROD/Hitecredblackyellow Futabaredblackwhite Pitts-Style Mufflers UNIVERSAL 9OIT ON side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts sup~ muffler JT-4OPB 29-45 $2795 J -60I- 51-61 $3195 MAIL ORDER Please add $400 UPS shipping Check MO Visa MC COD accepted Add $450 eatra COD California residents add 8% sales tea JT-A91 PASP 108$3295 JT-F74PFOX 74$3395 JT-M108PMAX 91-108$3595 JT-BGXPMAX BOXI$3695 JT-5T69PST 61-75-90$3395 JT-ST25PST 25-3000$3595 JT-MK15OPMOKI 15$3695 JT-W120PWEBRA 120$3395 closing gear doors bomb bay doors sliding hinged cockpit canopies explain GOSLOW circuit works brief description control signals servo must given Three wires connect servo receiver first two supply plus minus voltage battery pack often red black respectively third wire carries pulses direct motion servo positive pulses occur rate about 60 per second vary width about 1-2 ms milliseconds thousandths second pulse width 1 ms sends servo output limit rotation direction 2 ms limit other example pulse width supplied servo near center position approximately 15 ins GOSLOW takes input pulse train receiver generates new pulse train output uses feedback loop make width incoming outgoing pulses exactly same width incoming pulses changes however width output pulses does immediately change slews constant rate adjustable potentiometer board until pulse widths match once again truly proportional device since servo output can positioned specified angle within allowed range travel GOSLOW circuit based common 555 timer chip Actually 556 version used two independent 555s single 14-pin package timers configured one-shot pulse generators produce single output pulse specified duration supplied trigger pulse second integrated circuit IC used GOSLOW 324 quad operational amplifier contains four independent op-amps has very low power consumption designed operated single-sided power source such simple battery pack Servo motors tend draw current small gulps lasting 1-2 milliseconds places small ripple receiver battery voltage servo motion Although GOSLOW will continue work over wide battery voltage range rapid voltage fluctuations can interfere its proper operation Referring schematic shown Fig 2 resistor R2 capacitor Cl transistor Ql form filtered voltage source supplies entire circuit suppresses rapid voltage flutter Resistor Rl acts current limit protect Ql case accidental short circuit So what about going slow part 46 Model Aviation ERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2595 5 1-61 JT-60P $2795 MOKIOl JT-MK61 P $2995 EXhaust eXtensionS worm drIve mounting strai Included Notice between output op amp 2 control pin op-amp 3 configured linear voltage ramp generator Capacitor CS charged discharged constant current resulting linearly changing voltage output op-amp 3 variable resistor R12 actually potentiometer adjusts rate voltage change allowing slowed about 20 seconds full servo motion Resistor R13 sets lower limit about 2 seconds output pulse generator P1 sent servo buffered through op-amp 4 same way receiver input buffered op-amp 1 isolates pulse generator servo load completely protects GOSLOW output against short circuits circuit first receives power control signal P1 starts out low voltage before capacitor C5 fully charged initially resulting very short output pulses Although feedback loop immediately takes control adjusts pulse width match whatever width Incoming receiver can make adjustment rate user has chosen setting potentiometer R12 means immediately after receiver airplane powered up unwanted servo motion can occur Pulse generator P2 solves problem creating 25-second delay determined R18 C7 circuit first receives power discharge pin 13 P2 holds pulsed output low during delay Therefore servo motion disabled first 25 seconds after receiver powered up preventing unexpected servo glitch CONSTRUCTION An important goal able completely build GOSLOW components can easily purchased electronics supply such Radio Shack Table 1 complete parts list Radio Shack catalog numbers quantities required Note resistors sold packets 5 some capacitors packets 2 builder will have some left over Figure 3 exact size pattern printed circuit board best way believe making board product called Press-n-Peel blue plastic film can run through conventional photocopier Press-n-Peel manufactured Techniks Inc can ordered Electronics Corp Van Nuys CA 91411 Tel [818] 997-1806 Electronics Corp also good source electronic components required GOSLOW Following instructions supplied PROTECTION tection no offers er throttle response adding ne Byron immeasurable degree control n package lointly Lower opera lug temperatures.cooler riotz rertormance operating temps under demanding circumstances rnce.for rust-freeByron offers full line fuels ranging 0% 60% nitromethane lower price inferior fuels Whether youre cars boats ducted fans fixed wing rotay wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels ncy.set needleGet fueling confidence Get Byron Fuel fuel champions BYRON RIGINALSJ 48 Model Aviation PTOR THROW AWAY YOUR COLLETS CHUCK & ___WRENCH USE OUR ADAPTOR & KEYLESS CHUCI OTO 5132 CAP ON ALL DREME POWER TOOLS INCLUDING 1643 MINIMITE & EXIBLE SHAFT RUNS 100%TRUE& CONCENTRIC AT FULLRRM NO 501 ADAPTOR KEYLESS CHUCK $1895 650 365 00 NOT NEED ADAPTOR TO USE KEYLESS CHUCK STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUrliNG PlASTIC WOOD SOFT METALS LEA04 PIEXIGLASS & ETC AILASIE IN 00600000 012014 010016 020022025 020022 ThICKNESS 1 OUTSiDE DIAMETER $6 $070 EK 0 502 R $600 503 14X 114 SAW $600 UR SAWS ONLY WORK WITH OUR ARBOR ABRASIVE CUT-OFF BLADES FIBERGLASS REINFORCED-RESISTS BREAKAGE-CUT STEEL BRASS COPPER ALUMINUM AND OTHER METALS ALL BLADES 1/32 THICK WITH 1/4 HOLE SIZE NO PRICE SIZE NO PRICE 1112 AB2100 3ABS150 2AB3100 ARBOR 503600 ISAWS AND CUT-OFF BLADES ONLY WORK WITH OUR ARBOR NO NEEO FOR FLINT OR MATCHES MICROAfy JUST PRESS THE PIEZO SELF-STARTING SELFBUTTON FOR MICRO SITE ADJUSTABLE EIFLAME THAT BURNS AT 2370 FOR UP TC STARTING RI3 HOURS OPERATES ON STANDARD TO RC HREFILLABLE TANK FITS COMFORTABLY IN THE PALM OF YOUR HAND AND IS CIGARE1TE LIGHTER BUTANE AND IS MT77OMADE OP HIGH IMPACT RUBBER WHICH Blow TorchALLOWS FOR SAFE NON-SLIP GRIP Iwith coo 01 001. 63500 SUPPLIED WITH CAN OF BUTANE BBIaBe5oS600FD000 WHEN 06060640 FF00001300 EASTERN TOOL&SUPPLYCOCODAOO0I50 149 GRAND ST NYC. NY 10013ORDERS 212 925-1000 CATALOG FREE WITH ORDERPP50109254010 JLWJI .means Byron Fuel goes ers may go up smoke due lower restriction Contact dealer first doesnt stock Byron Fuel contact us direct Byron Originals Inc ox 279 Grove IA 51445 364-3165 film image Fig 3 should copied onto dull side ironed onto copper-clad board Radio Shack 276-1499 using household airplane film sealing iron experimenting find best temperature found useful securely tape film board along edge could carefully peel back small portion test adhesion pattern board transfer incomplete film let back down additional pressure higher temperature used After successful image transfer board etched solution ferric chloride Radio Shack 276-1535 about 30 minutes until unwanted copper gone Note blank board two-sided copper will completely removed back side board large enough make up eight circuits After etching mounting holes should drilled #65 bit easily accomplished since copper surrounding hole location accurately guides drilling interested building circuit want manufacture PC board may contact author address end article An etched PC board $10 plus SASE check money order please Alternatively complete unassembled kit minus servo connectors can obtained $20 Fig 4 shows schematic installation components onto board should inserted side opposite copper circuit pattern Table 2 list components required values Jl simply wire jumper made leftover trimmed resistor lead resistors should mounted vertically Pay special attention IC 1 1C2 Cl CS C7 Ql Q2 since direction installed very important Capacitors Cl C5 C7 should have marked positive negative lead Carefully solder installed components copper circuit pattern taking care avoid solder bridges across gaps between traces Advice and/or instruction fellow modeler circuit assembly experience could useful Input/output leads can obtained cutting servo extension cable appropriate particular radio system half Please note cabling shown Fig 4 Futaba JR RCD radio systems Airtronics users should cautioned V V wires should reversed shown Table 3 summarizes wire color codes typically used some common radio systems Installation operation Now easy part use GOSLOW circuit simply plugged between receiver servo like wrap circuit layer x foam held two rubber bands tuck near receiver Adjust potentiometer board desired servo speed clockwise er youre ready go Remember 25 seconds after switch receiver no servo motion possible Modelers have experience retractable landing gear understand importance checking gear switch before turning transmitter still important GOSLOW surprise airplane rocking its belly dirt will come 25 seconds later circuit really worth effort Just wait until fellow modelers see flaps landing gear GOSLOW answers questions additional information about GOSLOW author can contacted Internet DANE 1 @LLNLGOV Brent Dane 678 Crane Ave Livermore CA 94550 RIC guide tailored fit needs Radio Control Buyers Guide 17th Edition Get R/C product source thats tuned needsthe Radio Control Buyers Guide 17th Edition handy reference MORf guide thousands products facet R/C modeling The jed model8 Radio Control Buyers Guide covers R/C hobbies including planes flew 0 articles rt Compa 1 level 12tes helicopters cars monster trucks boats engines radios field acces-ancj compet ars sories tools level trtJcks0 years guide custom tailored fit requests finished creations all-color Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get R/C guide perfect fitthe Radio Control Buyers Guide #12127$1195 Send mecopys Rad/o Contro/Buyers Guide #12127$1195 *Entor total amount form Use coopen mail Kaimbach Publishing Co Dept XD836 21027 Crossroads Circle PO Boo 986 Waukesha WI 53187-0986 Include postage handling US add $300 4th class $450 UPS continental US Canada add $500 other foreign add $1000 Wisconsin residents add 5% safes tao total Canadian orders add 7% OST total Payable US foods Prices avail ability subject change Name*Totaf Enclosed $___________________ please Include postage aed tax. AddressCredit Card # accept American tapress mm 61Sf MasterCard VISA CityEnpiration Date________________ Phone # State ZipSignature XD836 r 50 Model Aviation book local hobby shop call toll free 800-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776

I FAiIhLL U BRENT DANE Flaps landing gear too fast -jid circuit make em GOSLOW simple compact inexpensive circuit has designed can connected between receiver control servo regulates time required full servo rotation between 2 20 seconds reduction servos torque proportional device allows servo positioned anywhere within allowed servo travel fully supports adjustable travel volume available radio systems Todays modern servos reliable powerful smooth fast Boy fast time required t~I rii full 900 rotation typically varies between about /5 nd good news control functions such ailerons elevator rudder quick response results improved aircraft control However other control functions such landing gear retraction flap extension speed servo motion less critical fact often desirable slow control components increased realism some cases improved performance sudden lowering flaps full setting can cause airplane pitch upward balloon adding unwanted altitude flaps lowered slowly steadily models airspeed allowed gradually bleed off undesirable sudden nose-up attitude can prevented solution control flaps often done proportional channel provides continuous adjustment However typical modeler looking coordinated control make during critical landing approach Another common problem encountered servo-actuated retractable landing gear operates too quickly objection primarily related aesthetics doesnt look good although extension retraction gear sometimes does result noticeable vertical trim change airplane problem partly alleviated use specially designed 1800 landing gear servo travels somewhat slowly However servos significantly expensive regular servos still quite fast compared 5-10 second landing gear motion provides best realism Another objection landing gear servo proportional device moves between two fixed endpoints cannot set adjustable travel volume ATV controls transmitter Landing gear installation greatly simplified being able precisely adjust servo travel assure reliable gear locking up down position overdriving retract mechanism stalling servo What needed magic box sits between servo receiver take control input user accurately pass servo regulate maximum rate servo position could change should slow servo regulating control signal servonot reducing electrical power servo motor would equivalent slowly turning proportional control knob transmitter position another GOSLOW plugs between servo receiver draws very little power has adjustment controls servo speed between about 2 20 seconds full rotation finished circuit about 125 x 175 inches have specially designed circuit use very common components easily found local electronics supply availability should well assured foreseeable future device just landing gear flap control applications could also include opening 44 Model Aviation leted GOSLOW circuit board An etched board full kit less servoAuthors Global P-39 Airacobra has retractable connectors available authorsee textlanding gear initial motivation GOSLOW IMDL OW Description 133 ohm resistor 11k resistor 310k resistor 133k resistor 847k resistor 2220k resistor 1iM resistor 1100k horiz mount potentiometer 3470pF ceramic disk capacitor 2OlpF PC-mount capacitor 222p F radial-lead electrolytic capactor 1220pF radial-lead electrolytic capactor 2 MPS2222A npn transistor 1556 dual timer 1LM324 quad op-amp filtered voltage 8I41y~ RO Part##packages 271-007 271-1321 271-1335 271-1341 271-1342 271-1350 271-1356 271-284 272-125 272-1065 272-1026 272-956 276-2009 276-1728 276-1711 0001101 SIgeli C7 rRilt 1 1 1 1 2 2 1 2 1 2 1 1 R7 io Cs Ri4 FIGURE 2 m F DLE stors Ri R2 R3 R4 R5 R6 R7 R8 R9 RiO Ru R12 Ri 3 R14 RiS R16 R17 Ri 8 33 10k 47k 10k 47k 47k 47k 47k 47k 220k 1k 100k trim pot 10k k 220k 47k 47k iM Capacitors Cl22pF C2470pF C3470pF C4470pF CS220pF 06OlpE 0722pF 08OlpE Transistors Qi Q2 M PS2222A M PS2222A Integrated Cicuits 101 102 LM324 556 March 1996 45 U/1IcaIII ,/6RioRio11101 1C2IpihIp2V R4Rilt 12 RORi2 C3 Ru U v 0 ov v servo L FIGURE 4 02 Photoa author Graphic deaign Heather Erdahi Manu ltage voltage Signal Airtronicsblack/redblackblack JRredbrownorange ROD/Hitecredblackyellow Futabaredblackwhite Pitts-Style Mufflers UNIVERSAL 9OIT ON side mounted engines Will fit 90% engines made after 1989 Easy attach Just bolt muffler engine factory muffler bolts bolts sup~ muffler JT-4OPB 29-45 $2795 J -60I- 51-61 $3195 MAIL ORDER Please add $400 UPS shipping Check MO Visa MC COD accepted Add $450 eatra COD California residents add 8% sales tea JT-A91 PASP 108$3295 JT-F74PFOX 74$3395 JT-M108PMAX 91-108$3595 JT-BGXPMAX BOXI$3695 JT-5T69PST 61-75-90$3395 JT-ST25PST 25-3000$3595 JT-MK15OPMOKI 15$3695 JT-W120PWEBRA 120$3395 closing gear doors bomb bay doors sliding hinged cockpit canopies explain GOSLOW circuit works brief description control signals servo must given Three wires connect servo receiver first two supply plus minus voltage battery pack often red black respectively third wire carries pulses direct motion servo positive pulses occur rate about 60 per second vary width about 1-2 ms milliseconds thousandths second pulse width 1 ms sends servo output limit rotation direction 2 ms limit other example pulse width supplied servo near center position approximately 15 ins GOSLOW takes input pulse train receiver generates new pulse train output uses feedback loop make width incoming outgoing pulses exactly same width incoming pulses changes however width output pulses does immediately change slews constant rate adjustable potentiometer board until pulse widths match once again truly proportional device since servo output can positioned specified angle within allowed range travel GOSLOW circuit based common 555 timer chip Actually 556 version used two independent 555s single 14-pin package timers configured one-shot pulse generators produce single output pulse specified duration supplied trigger pulse second integrated circuit IC used GOSLOW 324 quad operational amplifier contains four independent op-amps has very low power consumption designed operated single-sided power source such simple battery pack Servo motors tend draw current small gulps lasting 1-2 milliseconds places small ripple receiver battery voltage servo motion Although GOSLOW will continue work over wide battery voltage range rapid voltage fluctuations can interfere its proper operation Referring schematic shown Fig 2 resistor R2 capacitor Cl transistor Ql form filtered voltage source supplies entire circuit suppresses rapid voltage flutter Resistor Rl acts current limit protect Ql case accidental short circuit So what about going slow part 46 Model Aviation ERSAL STRAP ON older engines muffler bolts 29-45 JT-40P $2595 5 1-61 JT-60P $2795 MOKIOl JT-MK61 P $2995 EXhaust eXtensionS worm drIve mounting strai Included Notice between output op amp 2 control pin op-amp 3 configured linear voltage ramp generator Capacitor CS charged discharged constant current resulting linearly changing voltage output op-amp 3 variable resistor R12 actually potentiometer adjusts rate voltage change allowing slowed about 20 seconds full servo motion Resistor R13 sets lower limit about 2 seconds output pulse generator P1 sent servo buffered through op-amp 4 same way receiver input buffered op-amp 1 isolates pulse generator servo load completely protects GOSLOW output against short circuits circuit first receives power control signal P1 starts out low voltage before capacitor C5 fully charged initially resulting very short output pulses Although feedback loop immediately takes control adjusts pulse width match whatever width Incoming receiver can make adjustment rate user has chosen setting potentiometer R12 means immediately after receiver airplane powered up unwanted servo motion can occur Pulse generator P2 solves problem creating 25-second delay determined R18 C7 circuit first receives power discharge pin 13 P2 holds pulsed output low during delay Therefore servo motion disabled first 25 seconds after receiver powered up preventing unexpected servo glitch CONSTRUCTION An important goal able completely build GOSLOW components can easily purchased electronics supply such Radio Shack Table 1 complete parts list Radio Shack catalog numbers quantities required Note resistors sold packets 5 some capacitors packets 2 builder will have some left over Figure 3 exact size pattern printed circuit board best way believe making board product called Press-n-Peel blue plastic film can run through conventional photocopier Press-n-Peel manufactured Techniks Inc can ordered Electronics Corp Van Nuys CA 91411 Tel [818] 997-1806 Electronics Corp also good source electronic components required GOSLOW Following instructions supplied PROTECTION tection no offers er throttle response adding ne Byron immeasurable degree control n package lointly Lower opera lug temperatures.cooler riotz rertormance operating temps under demanding circumstances rnce.for rust-freeByron offers full line fuels ranging 0% 60% nitromethane lower price inferior fuels Whether youre cars boats ducted fans fixed wing rotay wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels ncy.set needleGet fueling confidence Get Byron Fuel fuel champions BYRON RIGINALSJ 48 Model Aviation PTOR THROW AWAY YOUR COLLETS CHUCK & ___WRENCH USE OUR ADAPTOR & KEYLESS CHUCI OTO 5132 CAP ON ALL DREME POWER TOOLS INCLUDING 1643 MINIMITE & EXIBLE SHAFT RUNS 100%TRUE& CONCENTRIC AT FULLRRM NO 501 ADAPTOR KEYLESS CHUCK $1895 650 365 00 NOT NEED ADAPTOR TO USE KEYLESS CHUCK STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUrliNG PlASTIC WOOD SOFT METALS LEA04 PIEXIGLASS & ETC AILASIE IN 00600000 012014 010016 020022025 020022 ThICKNESS 1 OUTSiDE DIAMETER $6 $070 EK 0 502 R $600 503 14X 114 SAW $600 UR SAWS ONLY WORK WITH OUR ARBOR ABRASIVE CUT-OFF BLADES FIBERGLASS REINFORCED-RESISTS BREAKAGE-CUT STEEL BRASS COPPER ALUMINUM AND OTHER METALS ALL BLADES 1/32 THICK WITH 1/4 HOLE SIZE NO PRICE SIZE NO PRICE 1112 AB2100 3ABS150 2AB3100 ARBOR 503600 ISAWS AND CUT-OFF BLADES ONLY WORK WITH OUR ARBOR NO NEEO FOR FLINT OR MATCHES MICROAfy JUST PRESS THE PIEZO SELF-STARTING SELFBUTTON FOR MICRO SITE ADJUSTABLE EIFLAME THAT BURNS AT 2370 FOR UP TC STARTING RI3 HOURS OPERATES ON STANDARD TO RC HREFILLABLE TANK FITS COMFORTABLY IN THE PALM OF YOUR HAND AND IS CIGARE1TE LIGHTER BUTANE AND IS MT77OMADE OP HIGH IMPACT RUBBER WHICH Blow TorchALLOWS FOR SAFE NON-SLIP GRIP Iwith coo 01 001. 63500 SUPPLIED WITH CAN OF BUTANE BBIaBe5oS600FD000 WHEN 06060640 FF00001300 EASTERN TOOL&SUPPLYCOCODAOO0I50 149 GRAND ST NYC. NY 10013ORDERS 212 925-1000 CATALOG FREE WITH ORDERPP50109254010 JLWJI .means Byron Fuel goes ers may go up smoke due lower restriction Contact dealer first doesnt stock Byron Fuel contact us direct Byron Originals Inc ox 279 Grove IA 51445 364-3165 film image Fig 3 should copied onto dull side ironed onto copper-clad board Radio Shack 276-1499 using household airplane film sealing iron experimenting find best temperature found useful securely tape film board along edge could carefully peel back small portion test adhesion pattern board transfer incomplete film let back down additional pressure higher temperature used After successful image transfer board etched solution ferric chloride Radio Shack 276-1535 about 30 minutes until unwanted copper gone Note blank board two-sided copper will completely removed back side board large enough make up eight circuits After etching mounting holes should drilled #65 bit easily accomplished since copper surrounding hole location accurately guides drilling interested building circuit want manufacture PC board may contact author address end article An etched PC board $10 plus SASE check money order please Alternatively complete unassembled kit minus servo connectors can obtained $20 Fig 4 shows schematic installation components onto board should inserted side opposite copper circuit pattern Table 2 list components required values Jl simply wire jumper made leftover trimmed resistor lead resistors should mounted vertically Pay special attention IC 1 1C2 Cl CS C7 Ql Q2 since direction installed very important Capacitors Cl C5 C7 should have marked positive negative lead Carefully solder installed components copper circuit pattern taking care avoid solder bridges across gaps between traces Advice and/or instruction fellow modeler circuit assembly experience could useful Input/output leads can obtained cutting servo extension cable appropriate particular radio system half Please note cabling shown Fig 4 Futaba JR RCD radio systems Airtronics users should cautioned V V wires should reversed shown Table 3 summarizes wire color codes typically used some common radio systems Installation operation Now easy part use GOSLOW circuit simply plugged between receiver servo like wrap circuit layer x foam held two rubber bands tuck near receiver Adjust potentiometer board desired servo speed clockwise er youre ready go Remember 25 seconds after switch receiver no servo motion possible Modelers have experience retractable landing gear understand importance checking gear switch before turning transmitter still important GOSLOW surprise airplane rocking its belly dirt will come 25 seconds later circuit really worth effort Just wait until fellow modelers see flaps landing gear GOSLOW answers questions additional information about GOSLOW author can contacted Internet DANE 1 @LLNLGOV Brent Dane 678 Crane Ave Livermore CA 94550 RIC guide tailored fit needs Radio Control Buyers Guide 17th Edition Get R/C product source thats tuned needsthe Radio Control Buyers Guide 17th Edition handy reference MORf guide thousands products facet R/C modeling The jed model8 Radio Control Buyers Guide covers R/C hobbies including planes flew 0 articles rt Compa 1 level 12tes helicopters cars monster trucks boats engines radios field acces-ancj compet ars sories tools level trtJcks0 years guide custom tailored fit requests finished creations all-color Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get R/C guide perfect fitthe Radio Control Buyers Guide #12127$1195 Send mecopys Rad/o Contro/Buyers Guide #12127$1195 *Entor total amount form Use coopen mail Kaimbach Publishing Co Dept XD836 21027 Crossroads Circle PO Boo 986 Waukesha WI 53187-0986 Include postage handling US add $300 4th class $450 UPS continental US Canada add $500 other foreign add $1000 Wisconsin residents add 5% safes tao total Canadian orders add 7% OST total Payable US foods Prices avail ability subject change Name*Totaf Enclosed $___________________ please Include postage aed tax. AddressCredit Card # accept American tapress mm 61Sf MasterCard VISA CityEnpiration Date________________ Phone # State ZipSignature XD836 r 50 Model Aviation book local hobby shop call toll free 800-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776