echuiquc THE ELECTRONIC BIRD-DOG multi purpose tool thats easy build thing Im sure readers like gadgets simple cheap effective device finds RFI Radio Frequency Interference sources costs about $25 Needing example illustrate column Went nearby Radio Shack pick up loud speaker boxFigure 1 charmed item 12-172 tiny AM radio Im holding lead photo little investi gation revealed removed block foam rubber under 9 volt battery cavity revealed seemed large enough hold servo amplifier opened vistas expanded capability gave temptation bought Actually expect dear reader may have suitable portable radio junked servo can scavenged parts wont have buy anything must buy parts radio sale $895 can get servo-amplifier kit Ace RC 1 4G25B $1095 pair 22K resistors 29K33 @ 25 ea set 3-pin Deans connectors 19K54 @ $135 Youll also want pair servo extension cables match RC system duplicate Georges setup youll also need small DPDTslide switch RMcM particular Radio Shack radio ideal purposes because old design uses interstage output transformers wont damaged forget switch loudspeaker AM radio before turning right now have cute little box contain ing loudspeaker can switched between servo-amplifier AM radio What good Starting basic Bird-Dog Figure 1 attach loudspeaker servo amplifier Inci dentally works because loudspeaker servo motor replaces have same impedance Now take servo extension Assistant Editor Doug Pratt impressed Georges Bird-Dog rushed homethat nightand built tested abouta half hour parts hand begin Note version AM radio capability Hes learned interesting things about RC interference local flying field already gadget clubmaybe fliershould have flight box 30 Model Aviation George M Myers prototype Electronic Bird-Dog built Fiuio ndii r40 IL I eceiver MS cen see Georges servo amplif ler bit too bulky fit space available cut window back cover make room forthe battery Mod makes battery easierto change Its held strio clear olastic tape Note added parts info article cable plug unused channel Retract channel good RC receiver Bring free end cable outside airplane cut hole mount like charging jack Take other extension cable plug receptacle have just created Cut free end off about 1-in plug may wish use something else Install Deans plug cut wires plug Bird-Dog Figure 3 Diagnoses 1 Turn off transmitter turn airplanes receiver a If hear apop click nothing normal b If hear BRRRRRR either someone else using frequency left transmitter cIfyouBRRRP.. .. BRRRP hearing intermodulation inter ference two other transmitters too close together too close have reprinted combinations will 1 I I SIGNAL DEANS SOCKET CONNECT THE MOTOR LEADS TO THE LOUDI SPEAKER IGNORE GROUND LEAD SERVOLOUDSPEAKER 8 OHMS pIzEJ1 CONNECT RESISTORS 1111 N PLACE OF FEED JJ BACK POTENTIOMETER I L USE SUITABLE ENCLOSUREJ Figure 1Basic Bird-Dog built Doug Pratt Can solder Build Bill Hershbergers listing Together ness Can Bring Glitches printed MA January 81 See youve got read AMA News section too Youre 72080 Guys Gang Up 72160 plus 72240 72240 plus 72400 7216072240 plus 72320 7224072080 plus 72160 72320 plus 72400 7240072080 plus 72240 72240 plus 72320 72320 72960 & 75640 dont have prob lem read 2 Now turn transmitter a If hear BRRRRRR normal b The burping sound can heard two trans mitters operating same frequency Figure 3Typical installation provision Bird-Dog Simplest imaginable scheme provided have extra control chan nel Remember unplug before taxiing out takeoff JEt LOUDSPEAKER case youve just shot down buddy c can get burping sound just other transmitter its operating too close YouThe Guy Whos Too Close 72080 72320 72160 72400 72320 72080 72400 72160 72960 72080 Note 75640 has stayed clean As Lord said Tower Babel EXTENSION CABLE EXTENSION CABLE Figure 2Advanced Bird-Dog Add AM radio DPDT switch build inside AM radio case George did Spread out guys add warning Pay attention taxi take off land distances between transmitters plays big part determining much interference encounter past knew servos jumping around Now can find out 3 Leave everything turned go looking other problems Pump fuel listen interference electric fuel pump b Connect glowdriver listen interference c Start engine listen interference d Have friends hold plane up center wing panels run engine up down speed range work controls may discover some on-board inter ference clattering metal parts partly severed wires bad battery cells and/or jumpy feedback pot wipers e Stop engine take off wing turn off Continued page 100 January 198231 THE BASIC BIRD-DOG DPDT SWITCH -u0 AM RADIO IEGAIN Losing control can night mare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inhouse radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control tO0 1925 E fly Futaba flEiU K. ro Line KRAFT Creighton RoadPensacola FL 32504904/478-6745 Safety Preston Continued page 12 lachymatory tear-producing can cause eye irritation tearing used poorly venti lated places modeler correspondents related experience lung congestion after visits doctor treatment allergies attributed problem use cyanoacrylate glues Satellite City brochure has say about mucous membranes Mucous surfaces can become irritated prolonged exposure cyanoacrylate vapors poorly ventilated areas Vapor irritation eyes mucous mem branes will noticeable under conditions low relative humidity visitor Australia staying us week during summer Some may know himFord Lloyd Australian team captain 1980 Scale World Champ ionships also Scale judge US Nats same year Ford mentioned having ex perienced sinus problems using cyano acrylate glues may have accentuated low humidity Australian climate So lookout such symptoms live Arizona use cyanoacrylates vapors cause problem maybe small fan near workbench would help wind up months column wed like alert untidy modelers possible fire hazard may exist because sloppy habits course doesnt apply majority us routinely clean up work area after building session! Some recent correspondence Dremel tells us adding paragraph instructions accompany belt sander will state following Cleaning Remove accumulated dust debris inside motor frequent intervals hold vacuum sweeper hose rear motor vents see figure 20 tapping motor housing screwdriver handle light non-marring hammer loosen dirt blow air motor will blow dirt bearings Failure keep motor clean will result overheating motor could result fire dust flam mable forewarned balsa dust flammable couple modelers have reported smolderingtype fires Dremel belt sanders modeler reported similar experience table saw have workbench like Bill Northrops see Bill Northrops Work bench issue ModelBuilder d have problem Have safe month John Preston 7012 Elvira Couri Falls Church VA 22042 writing edvertuaars mention read about Model Aviation Radio Technique/Myers Continued page 31 transmitter start moving wires around gently inside plane may find fractured wires some loose dirty plugs switch has taken too much caster oil antenna wire has fractured inside insula tion strain relief dozens other little gremlins Have fun point know some people saying Thatstoomuchtrouble Well Im saying have flight Just investigate little have reason tool lets listen problems can see making servos nervous little practice youll learn differentiate between RFI will effect flying wont crash ignorance 4 Moving advanced Bird-Dog see AM receiver offers least six useful functions a When charge transmitter impound area next contest will find AM radio quickest easiest way discover anyone has left atransmitterturned Merely touch screw holding volume control top antenna hear BRRR youll know its course AM receiver must turned volume must turned up can hear it must Continued page 102 u.s. 55rr t.Si.t 5E....I,.,SSSgS.....5tU .. . .. ....n..........nnm .i.......flfla, --MJ MAS ENTERPRISES 1979-1980SPECIALISTS IN cHAMPION M I1E _ F __roudly HeadRC HELICOPTERS HELl-BOY 40 HEADQUARTERS LT HELICOPTER Ot staff qoalified assser qoestiocs tatfing froro tstalling train gear flying yoor ship inserted SCHLUTER HELl BOY 60 Size CALL FOR OUR LOW PRICES Ssshlager Helissopser Pans Stock Including Pipes Fuselages Etc LOWEST PRICES WEBRA now available J WAS ENTEIjVHIaS- Us~Ilb P0 Box 727 Miami FL 33197 Phone 1305 255-0658,System S OVERSEAS DISTRIBUTORS Stock Helicopter Kits Accessories Engines @ Radios Parts S Books CR//CKFT Cricket Parts AMERICAN R/C MANTIS NOW ONLY $11998 -A 100 Model Aviation \ 14$ Aeromarimes BIG TRACT Electric Retractable s, ing Gear 1/5 Scale & 1/4 Scale Models proud present modeling public advanced well constructed landing gear designed 1/5 scale & 1/4 scale models up 85 pound weight components used systems ot best Quality available parts manutactured highest standards insure strength quailty reliable periormance system comes complete battery pack charger servo switch harnes 2 15 long estentions loctite mounting bolts 3 view full size drawing tor mall ing plan modifications electric retractable landing gear system has designed 8nd tested throughty suitable tor installation varity aircrah models units available TWIN GEAR MAINS TRI-GEAR MAINS steerable NOSE GEAR ROTATING MAINS Master Kits P-40 Nosen Corsair retractable steerable TAIL WHEEL special units Nick Ziroli Models AEROMARINE believe modeler should able build models live up true scale counter part both pertormance function think 1/4 scale retracts think BIG-TRACT Call write 8 page illustrated catalog retract systems available upon request Enclose $100 16 page catalog other fine products AEROMARINE ENTERPRIZES BOX 282 BEACHWOOD NJ 08722 201 240-3882 Cadillac Big Retracts Check out Standard features 50-60 Retract Cycles Per Charge Scale 10 Second Retract Time Aluminum & Stainless Steel Spring Loaded Air Shock 3 Sets Springs Custom Tune Tension Scale Oleo Strut Retract Angle Just 900 Can Set anywhere Between 800 & 1100 Making Universal Types Models Toe & Toe Out Wheel Can Adlusted Providi Correct Ground Handling Tracking unit independently operated self locking position Full 1 year warranty Completely assembled & ready operate via simple servo operation Looking Hard Find Soarinq Goodies 75/lie c3a4fane 5/acory o has complete Comprehensive line RIO Soaring products toeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products O We serve serious fl/C soaring enthusiast supplies kits other items have sought long Call write today Pree product listing & price sheet Sailplane Factory PO Box 341 Red Lion PA 17356 717 244-4508 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin 102 Model Aviation once used portable radio locate switch washing machine arcing continuously spoiling TV reception house another occasion located electric light bulb fractured kept welding itself together bulb produced annoying continuous noise AM radio sparkles TV until located Since bulb apparently working normally no suspected culprit till AM radio showed up Hold AM radio next fuel pump its pumping discover servos get nervous someone refueling nearby d As use tool will discover some transmitters emit very little energy antenna collapsed metal cased dis appearing antenna others emit quite bit plastic cased part section left exposed tells ones wary some assures theyre turned off pass new magic wand can give greater conft dence e The AM radio can give time signals weather forecasts wary ifs front expected pass through youre out flying news music company youre shop alone t Snaps crackles will warn approach electrical strom long before see lightning hear thunder might want move stuff car early wants caught standing rain Continued page 104 AVAILABLE NOW Woco UPF 7 90-Sipe &23g5 JR Spesiet MK iii 54 Mono 78 Ripe Weight iS ibs2195 Trevel Air 2000 105 Classic Scam Riplane 23 lbs 2295 Trevet Air 4000 99 Radial Rca Classic Ripe 23 ISs 2295 Fekkee 0-wi 85 Cecocac WW i Fightec Ripe 23 lbs2495 Conting seen Sopinith Pop 50 5ipe Sopech Trpehoccd 80 Tcjplaee Waco ATO Lylack Vecsice 50 5iplaoe SleaporI 11 5c5e 55 Sivlace 35 Scale rokke ORi 72 Tiplace Plans shipped UPS Pacel Post Please add $300 torpostage hand/mo fastesr serv/ce send pOstal money order No C 00 orders sent BEHRENS PLAN SERVICE 31-27 Healy Ave. Far Rockeway NY 11691 in2121 337-6987in Electronic Bird-Dog set up monitor receiver has plug-in crystal can monitor channel can get crystal within band course portable tape recorder shown because George offering try identify source interference recording cant yourself address end column tuned between stations controls time sound quality should b You might have reason wonder change time control moved controls transmitter working Hold c hold AM radio near strong operating AM receiver near transmitter electrical disturbances like noisy electric motors antenna get BRRRR sound work high-tension lines can hear static like Quadra. Youll Love PARTNER Optional twin-stack muffler Smoke version available Double-riep piston higher compression ft longer life Optional choke Iasy hand starting Special close-coupled tlgh-tension system less AT radiation Solid-beam type mount optional radial supports avail Roller thrust-hearing exclusively use model aircraft Power-balanced light-weight flywheel 37 SUPER POWER ROPER 24 KIORITZ ENGINE 22 PARTNER ENGINE 23 GUADRA ENGINE 79 ROPER ENGINE 79 ENGINE HUB & MOUNT PACK 79 USED DEMO ENGINE 79 ROPER ENGINE KIT BALENCED 6-BOLT HUB Ropa Parlaar S Oaadraj PROP DRILL JIG RADIAL MOUNT-Rap 37 & 79 RADIAL MOUNT Pad,, RETAIL $24900 21200 12500 13500 9500 7995 1495 SALE 18900 77995 8995 8995 4995 6500 2500 3995 702995 7637295 1237000 Introducing An updated ver sian popular engine Note improvements made especially miniature aircraft Roller Thrust-Bearing Double-Ring Piston Spark Plug Location Low3 1/2 lb Weight Power Output LIMITED TIME OFrER ~LIST $12500 SALE $8995 prop hub Optional brite spinner starter cotd gmove SALE 2495 1000 500 850 795 250 7000 1000 2000 WRITE OR CALL Send 1 8C Stamp Catalogl Will Ship Orders Same Day COD UFiS HORNERS SALESINCRt2Box 9 300 Dixie Hwy.Beecher IL 504431 312 946-2515 131SEMI-SCALE 1920 RUNABOUT PJFIIFLIEfPIl-ft RADIO CONTROLLED NON-RIGID AIRSNIP PRACTICAL SIZE Can Lift 20 00 Use Standard Radios t3 4 Channel] Reqsrsn U Cobb Ft Helion Hollow Available Weldine Sapply Shops FULL CONTROL Modern Thrsnt-Aerodynanis Control Forward Hover Bachward Elevation Torn Ballast Hetiaw Ileleane COMPLETE KIT Fonsed Plastic Die-Cot Balsa $249Plywood Parts Moanling Hardware Wire Plots Switches Bosh Esplain Blimp Operation Detailed Plans Photos Completely Fabri catod Vinyl Holism Envelope Elvotric Motors Radio Batteries NOW YOU CAN FLY YOUR OWNNot Included ELECTRIC POWERED BLIMPCOMPLETE CATALOG $100 Pfldecja 8* lea aem nsaPO BOX 2498 -MALA MESA CALIF 92041 WuiKuVfyUuGPHONE 714 469-8675 714 442-4636 104 Model Aviation lightning rod hands know youre weary reading suggestions bear bit longer whole thing started couple friends Paul Bell Ron Farkas asked Cheap RC channel monitor started idea could add output transformer detector stage RC receiver listen earphones loudspeaker can can locate transformer some junked port able AM radio Unfortunately monitor func tion isnt worth much assessing causes interference plane air cause have both hands full trying get nose up engine stopped buddy might take monitor walk halfway RFI source could quite walk because up sky planes receiver can hearthings miles around Up close monitor can hear own transmitter cant accomplish much wear thing shirt pocket other hand monitor has value sur veying scene before turn transmitter want can plug birddog RC receiver offers interchange able crystals like Airtronics XL Plug crystal channels interested listen Figure 3 cases suspect youre going interested channel intend fly airplane receiver need Electronic Bird-Dog version will costless scanner can buy its versatile wont good dont use Get habit carrying flight box Should elect use suggested Radio Shack radio will find comes tn stout cardboard box makes nice protec tive cover Failing use small camera case final thought compliments Ron Farkas Bird-Dog checks bands 27 35 49 53 72 75 MHz Aint nice Keep letters coming George Myers 70FroehliCh Form Rd Hicks yule NY 11801 Acapulco Diary/Keck Continued page 37 feels results fair representation Hanno Prettner uses bells whistle flying Dave Brown uses very basic setup dont think uses mixture control uses exposed pipe nothing closed Daves real sportsman has problems keeps right smiling dont know what guts doing time outside sure looked collected can proud him job has done team members have certainly come through again flying colors Tony Bonetti new National Champ showed up competition talking together afterwards about just what changes would make aircraft next year both agreed designs flying right now pretty basic way improve work small details lots practice list winners shows wide range good combinations its does practicing gets act together thats going winning Betty Sue Stream helped tabulat ing sunny dispositions competence very reassuring important job banquet something disappointment started late cleared entire group go out beach finally called quits went bed heard later bomb scare rumor fouled up banquet Mexican people have put forward good Homers Specials PART 112 118 117 108 709 119 110 111 107 TWIN STACK EXHAUST-37 & Ko,tz 105 TWIN STACK EXHAUST- Pad,, 120 CHOKE ASSEMBLY- Pen, & 0,ada 121 BRITE SPINNER- Ropa PadS Goad 122 NEOPRENE GAS LINE- p foot 107 RESISTOR SPARK PLUG RCJ-6 113 TO UPDATE EARLY MODEL 37 ENG Nasr dealg, ad beak 37 EXCHANGE Spasaal nechiaed AhaaL 37 BaBbaaiwg fro,t hosg 37 BIG PROPS AVAILABLE Fi,shad eatd balnced sood ALUMINUM HUB WHEELS Finest Wheels Made Feature AUTHENTIC APPEARANCE s EASY & FAST ASSEMBLY Rugged construction aluminum Readily installed removed hub balloon type Equipped Built-in treaded tire retaining device LONG-LASTING SPONGE light weight 0Pat App for
Edition: Model Aviation - 1982/01
Page Numbers: 30, 31, 100, 102, 104
echuiquc THE ELECTRONIC BIRD-DOG multi purpose tool thats easy build thing Im sure readers like gadgets simple cheap effective device finds RFI Radio Frequency Interference sources costs about $25 Needing example illustrate column Went nearby Radio Shack pick up loud speaker boxFigure 1 charmed item 12-172 tiny AM radio Im holding lead photo little investi gation revealed removed block foam rubber under 9 volt battery cavity revealed seemed large enough hold servo amplifier opened vistas expanded capability gave temptation bought Actually expect dear reader may have suitable portable radio junked servo can scavenged parts wont have buy anything must buy parts radio sale $895 can get servo-amplifier kit Ace RC 1 4G25B $1095 pair 22K resistors 29K33 @ 25 ea set 3-pin Deans connectors 19K54 @ $135 Youll also want pair servo extension cables match RC system duplicate Georges setup youll also need small DPDTslide switch RMcM particular Radio Shack radio ideal purposes because old design uses interstage output transformers wont damaged forget switch loudspeaker AM radio before turning right now have cute little box contain ing loudspeaker can switched between servo-amplifier AM radio What good Starting basic Bird-Dog Figure 1 attach loudspeaker servo amplifier Inci dentally works because loudspeaker servo motor replaces have same impedance Now take servo extension Assistant Editor Doug Pratt impressed Georges Bird-Dog rushed homethat nightand built tested abouta half hour parts hand begin Note version AM radio capability Hes learned interesting things about RC interference local flying field already gadget clubmaybe fliershould have flight box 30 Model Aviation George M Myers prototype Electronic Bird-Dog built Fiuio ndii r40 IL I eceiver MS cen see Georges servo amplif ler bit too bulky fit space available cut window back cover make room forthe battery Mod makes battery easierto change Its held strio clear olastic tape Note added parts info article cable plug unused channel Retract channel good RC receiver Bring free end cable outside airplane cut hole mount like charging jack Take other extension cable plug receptacle have just created Cut free end off about 1-in plug may wish use something else Install Deans plug cut wires plug Bird-Dog Figure 3 Diagnoses 1 Turn off transmitter turn airplanes receiver a If hear apop click nothing normal b If hear BRRRRRR either someone else using frequency left transmitter cIfyouBRRRP.. .. BRRRP hearing intermodulation inter ference two other transmitters too close together too close have reprinted combinations will 1 I I SIGNAL DEANS SOCKET CONNECT THE MOTOR LEADS TO THE LOUDI SPEAKER IGNORE GROUND LEAD SERVOLOUDSPEAKER 8 OHMS pIzEJ1 CONNECT RESISTORS 1111 N PLACE OF FEED JJ BACK POTENTIOMETER I L USE SUITABLE ENCLOSUREJ Figure 1Basic Bird-Dog built Doug Pratt Can solder Build Bill Hershbergers listing Together ness Can Bring Glitches printed MA January 81 See youve got read AMA News section too Youre 72080 Guys Gang Up 72160 plus 72240 72240 plus 72400 7216072240 plus 72320 7224072080 plus 72160 72320 plus 72400 7240072080 plus 72240 72240 plus 72320 72320 72960 & 75640 dont have prob lem read 2 Now turn transmitter a If hear BRRRRRR normal b The burping sound can heard two trans mitters operating same frequency Figure 3Typical installation provision Bird-Dog Simplest imaginable scheme provided have extra control chan nel Remember unplug before taxiing out takeoff JEt LOUDSPEAKER case youve just shot down buddy c can get burping sound just other transmitter its operating too close YouThe Guy Whos Too Close 72080 72320 72160 72400 72320 72080 72400 72160 72960 72080 Note 75640 has stayed clean As Lord said Tower Babel EXTENSION CABLE EXTENSION CABLE Figure 2Advanced Bird-Dog Add AM radio DPDT switch build inside AM radio case George did Spread out guys add warning Pay attention taxi take off land distances between transmitters plays big part determining much interference encounter past knew servos jumping around Now can find out 3 Leave everything turned go looking other problems Pump fuel listen interference electric fuel pump b Connect glowdriver listen interference c Start engine listen interference d Have friends hold plane up center wing panels run engine up down speed range work controls may discover some on-board inter ference clattering metal parts partly severed wires bad battery cells and/or jumpy feedback pot wipers e Stop engine take off wing turn off Continued page 100 January 198231 THE BASIC BIRD-DOG DPDT SWITCH -u0 AM RADIO IEGAIN Losing control can night mare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inhouse radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control tO0 1925 E fly Futaba flEiU K. ro Line KRAFT Creighton RoadPensacola FL 32504904/478-6745 Safety Preston Continued page 12 lachymatory tear-producing can cause eye irritation tearing used poorly venti lated places modeler correspondents related experience lung congestion after visits doctor treatment allergies attributed problem use cyanoacrylate glues Satellite City brochure has say about mucous membranes Mucous surfaces can become irritated prolonged exposure cyanoacrylate vapors poorly ventilated areas Vapor irritation eyes mucous mem branes will noticeable under conditions low relative humidity visitor Australia staying us week during summer Some may know himFord Lloyd Australian team captain 1980 Scale World Champ ionships also Scale judge US Nats same year Ford mentioned having ex perienced sinus problems using cyano acrylate glues may have accentuated low humidity Australian climate So lookout such symptoms live Arizona use cyanoacrylates vapors cause problem maybe small fan near workbench would help wind up months column wed like alert untidy modelers possible fire hazard may exist because sloppy habits course doesnt apply majority us routinely clean up work area after building session! Some recent correspondence Dremel tells us adding paragraph instructions accompany belt sander will state following Cleaning Remove accumulated dust debris inside motor frequent intervals hold vacuum sweeper hose rear motor vents see figure 20 tapping motor housing screwdriver handle light non-marring hammer loosen dirt blow air motor will blow dirt bearings Failure keep motor clean will result overheating motor could result fire dust flam mable forewarned balsa dust flammable couple modelers have reported smolderingtype fires Dremel belt sanders modeler reported similar experience table saw have workbench like Bill Northrops see Bill Northrops Work bench issue ModelBuilder d have problem Have safe month John Preston 7012 Elvira Couri Falls Church VA 22042 writing edvertuaars mention read about Model Aviation Radio Technique/Myers Continued page 31 transmitter start moving wires around gently inside plane may find fractured wires some loose dirty plugs switch has taken too much caster oil antenna wire has fractured inside insula tion strain relief dozens other little gremlins Have fun point know some people saying Thatstoomuchtrouble Well Im saying have flight Just investigate little have reason tool lets listen problems can see making servos nervous little practice youll learn differentiate between RFI will effect flying wont crash ignorance 4 Moving advanced Bird-Dog see AM receiver offers least six useful functions a When charge transmitter impound area next contest will find AM radio quickest easiest way discover anyone has left atransmitterturned Merely touch screw holding volume control top antenna hear BRRR youll know its course AM receiver must turned volume must turned up can hear it must Continued page 102 u.s. 55rr t.Si.t 5E....I,.,SSSgS.....5tU .. . .. ....n..........nnm .i.......flfla, --MJ MAS ENTERPRISES 1979-1980SPECIALISTS IN cHAMPION M I1E _ F __roudly HeadRC HELICOPTERS HELl-BOY 40 HEADQUARTERS LT HELICOPTER Ot staff qoalified assser qoestiocs tatfing froro tstalling train gear flying yoor ship inserted SCHLUTER HELl BOY 60 Size CALL FOR OUR LOW PRICES Ssshlager Helissopser Pans Stock Including Pipes Fuselages Etc LOWEST PRICES WEBRA now available J WAS ENTEIjVHIaS- Us~Ilb P0 Box 727 Miami FL 33197 Phone 1305 255-0658,System S OVERSEAS DISTRIBUTORS Stock Helicopter Kits Accessories Engines @ Radios Parts S Books CR//CKFT Cricket Parts AMERICAN R/C MANTIS NOW ONLY $11998 -A 100 Model Aviation \ 14$ Aeromarimes BIG TRACT Electric Retractable s, ing Gear 1/5 Scale & 1/4 Scale Models proud present modeling public advanced well constructed landing gear designed 1/5 scale & 1/4 scale models up 85 pound weight components used systems ot best Quality available parts manutactured highest standards insure strength quailty reliable periormance system comes complete battery pack charger servo switch harnes 2 15 long estentions loctite mounting bolts 3 view full size drawing tor mall ing plan modifications electric retractable landing gear system has designed 8nd tested throughty suitable tor installation varity aircrah models units available TWIN GEAR MAINS TRI-GEAR MAINS steerable NOSE GEAR ROTATING MAINS Master Kits P-40 Nosen Corsair retractable steerable TAIL WHEEL special units Nick Ziroli Models AEROMARINE believe modeler should able build models live up true scale counter part both pertormance function think 1/4 scale retracts think BIG-TRACT Call write 8 page illustrated catalog retract systems available upon request Enclose $100 16 page catalog other fine products AEROMARINE ENTERPRIZES BOX 282 BEACHWOOD NJ 08722 201 240-3882 Cadillac Big Retracts Check out Standard features 50-60 Retract Cycles Per Charge Scale 10 Second Retract Time Aluminum & Stainless Steel Spring Loaded Air Shock 3 Sets Springs Custom Tune Tension Scale Oleo Strut Retract Angle Just 900 Can Set anywhere Between 800 & 1100 Making Universal Types Models Toe & Toe Out Wheel Can Adlusted Providi Correct Ground Handling Tracking unit independently operated self locking position Full 1 year warranty Completely assembled & ready operate via simple servo operation Looking Hard Find Soarinq Goodies 75/lie c3a4fane 5/acory o has complete Comprehensive line RIO Soaring products toeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products O We serve serious fl/C soaring enthusiast supplies kits other items have sought long Call write today Pree product listing & price sheet Sailplane Factory PO Box 341 Red Lion PA 17356 717 244-4508 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin 102 Model Aviation once used portable radio locate switch washing machine arcing continuously spoiling TV reception house another occasion located electric light bulb fractured kept welding itself together bulb produced annoying continuous noise AM radio sparkles TV until located Since bulb apparently working normally no suspected culprit till AM radio showed up Hold AM radio next fuel pump its pumping discover servos get nervous someone refueling nearby d As use tool will discover some transmitters emit very little energy antenna collapsed metal cased dis appearing antenna others emit quite bit plastic cased part section left exposed tells ones wary some assures theyre turned off pass new magic wand can give greater conft dence e The AM radio can give time signals weather forecasts wary ifs front expected pass through youre out flying news music company youre shop alone t Snaps crackles will warn approach electrical strom long before see lightning hear thunder might want move stuff car early wants caught standing rain Continued page 104 AVAILABLE NOW Woco UPF 7 90-Sipe &23g5 JR Spesiet MK iii 54 Mono 78 Ripe Weight iS ibs2195 Trevel Air 2000 105 Classic Scam Riplane 23 lbs 2295 Trevet Air 4000 99 Radial Rca Classic Ripe 23 ISs 2295 Fekkee 0-wi 85 Cecocac WW i Fightec Ripe 23 lbs2495 Conting seen Sopinith Pop 50 5ipe Sopech Trpehoccd 80 Tcjplaee Waco ATO Lylack Vecsice 50 5iplaoe SleaporI 11 5c5e 55 Sivlace 35 Scale rokke ORi 72 Tiplace Plans shipped UPS Pacel Post Please add $300 torpostage hand/mo fastesr serv/ce send pOstal money order No C 00 orders sent BEHRENS PLAN SERVICE 31-27 Healy Ave. Far Rockeway NY 11691 in2121 337-6987in Electronic Bird-Dog set up monitor receiver has plug-in crystal can monitor channel can get crystal within band course portable tape recorder shown because George offering try identify source interference recording cant yourself address end column tuned between stations controls time sound quality should b You might have reason wonder change time control moved controls transmitter working Hold c hold AM radio near strong operating AM receiver near transmitter electrical disturbances like noisy electric motors antenna get BRRRR sound work high-tension lines can hear static like Quadra. Youll Love PARTNER Optional twin-stack muffler Smoke version available Double-riep piston higher compression ft longer life Optional choke Iasy hand starting Special close-coupled tlgh-tension system less AT radiation Solid-beam type mount optional radial supports avail Roller thrust-hearing exclusively use model aircraft Power-balanced light-weight flywheel 37 SUPER POWER ROPER 24 KIORITZ ENGINE 22 PARTNER ENGINE 23 GUADRA ENGINE 79 ROPER ENGINE 79 ENGINE HUB & MOUNT PACK 79 USED DEMO ENGINE 79 ROPER ENGINE KIT BALENCED 6-BOLT HUB Ropa Parlaar S Oaadraj PROP DRILL JIG RADIAL MOUNT-Rap 37 & 79 RADIAL MOUNT Pad,, RETAIL $24900 21200 12500 13500 9500 7995 1495 SALE 18900 77995 8995 8995 4995 6500 2500 3995 702995 7637295 1237000 Introducing An updated ver sian popular engine Note improvements made especially miniature aircraft Roller Thrust-Bearing Double-Ring Piston Spark Plug Location Low3 1/2 lb Weight Power Output LIMITED TIME OFrER ~LIST $12500 SALE $8995 prop hub Optional brite spinner starter cotd gmove SALE 2495 1000 500 850 795 250 7000 1000 2000 WRITE OR CALL Send 1 8C Stamp Catalogl Will Ship Orders Same Day COD UFiS HORNERS SALESINCRt2Box 9 300 Dixie Hwy.Beecher IL 504431 312 946-2515 131SEMI-SCALE 1920 RUNABOUT PJFIIFLIEfPIl-ft RADIO CONTROLLED NON-RIGID AIRSNIP PRACTICAL SIZE Can Lift 20 00 Use Standard Radios t3 4 Channel] Reqsrsn U Cobb Ft Helion Hollow Available Weldine Sapply Shops FULL CONTROL Modern Thrsnt-Aerodynanis Control Forward Hover Bachward Elevation Torn Ballast Hetiaw Ileleane COMPLETE KIT Fonsed Plastic Die-Cot Balsa $249Plywood Parts Moanling Hardware Wire Plots Switches Bosh Esplain Blimp Operation Detailed Plans Photos Completely Fabri catod Vinyl Holism Envelope Elvotric Motors Radio Batteries NOW YOU CAN FLY YOUR OWNNot Included ELECTRIC POWERED BLIMPCOMPLETE CATALOG $100 Pfldecja 8* lea aem nsaPO BOX 2498 -MALA MESA CALIF 92041 WuiKuVfyUuGPHONE 714 469-8675 714 442-4636 104 Model Aviation lightning rod hands know youre weary reading suggestions bear bit longer whole thing started couple friends Paul Bell Ron Farkas asked Cheap RC channel monitor started idea could add output transformer detector stage RC receiver listen earphones loudspeaker can can locate transformer some junked port able AM radio Unfortunately monitor func tion isnt worth much assessing causes interference plane air cause have both hands full trying get nose up engine stopped buddy might take monitor walk halfway RFI source could quite walk because up sky planes receiver can hearthings miles around Up close monitor can hear own transmitter cant accomplish much wear thing shirt pocket other hand monitor has value sur veying scene before turn transmitter want can plug birddog RC receiver offers interchange able crystals like Airtronics XL Plug crystal channels interested listen Figure 3 cases suspect youre going interested channel intend fly airplane receiver need Electronic Bird-Dog version will costless scanner can buy its versatile wont good dont use Get habit carrying flight box Should elect use suggested Radio Shack radio will find comes tn stout cardboard box makes nice protec tive cover Failing use small camera case final thought compliments Ron Farkas Bird-Dog checks bands 27 35 49 53 72 75 MHz Aint nice Keep letters coming George Myers 70FroehliCh Form Rd Hicks yule NY 11801 Acapulco Diary/Keck Continued page 37 feels results fair representation Hanno Prettner uses bells whistle flying Dave Brown uses very basic setup dont think uses mixture control uses exposed pipe nothing closed Daves real sportsman has problems keeps right smiling dont know what guts doing time outside sure looked collected can proud him job has done team members have certainly come through again flying colors Tony Bonetti new National Champ showed up competition talking together afterwards about just what changes would make aircraft next year both agreed designs flying right now pretty basic way improve work small details lots practice list winners shows wide range good combinations its does practicing gets act together thats going winning Betty Sue Stream helped tabulat ing sunny dispositions competence very reassuring important job banquet something disappointment started late cleared entire group go out beach finally called quits went bed heard later bomb scare rumor fouled up banquet Mexican people have put forward good Homers Specials PART 112 118 117 108 709 119 110 111 107 TWIN STACK EXHAUST-37 & Ko,tz 105 TWIN STACK EXHAUST- Pad,, 120 CHOKE ASSEMBLY- Pen, & 0,ada 121 BRITE SPINNER- Ropa PadS Goad 122 NEOPRENE GAS LINE- p foot 107 RESISTOR SPARK PLUG RCJ-6 113 TO UPDATE EARLY MODEL 37 ENG Nasr dealg, ad beak 37 EXCHANGE Spasaal nechiaed AhaaL 37 BaBbaaiwg fro,t hosg 37 BIG PROPS AVAILABLE Fi,shad eatd balnced sood ALUMINUM HUB WHEELS Finest Wheels Made Feature AUTHENTIC APPEARANCE s EASY & FAST ASSEMBLY Rugged construction aluminum Readily installed removed hub balloon type Equipped Built-in treaded tire retaining device LONG-LASTING SPONGE light weight 0Pat App for
Edition: Model Aviation - 1982/01
Page Numbers: 30, 31, 100, 102, 104
echuiquc THE ELECTRONIC BIRD-DOG multi purpose tool thats easy build thing Im sure readers like gadgets simple cheap effective device finds RFI Radio Frequency Interference sources costs about $25 Needing example illustrate column Went nearby Radio Shack pick up loud speaker boxFigure 1 charmed item 12-172 tiny AM radio Im holding lead photo little investi gation revealed removed block foam rubber under 9 volt battery cavity revealed seemed large enough hold servo amplifier opened vistas expanded capability gave temptation bought Actually expect dear reader may have suitable portable radio junked servo can scavenged parts wont have buy anything must buy parts radio sale $895 can get servo-amplifier kit Ace RC 1 4G25B $1095 pair 22K resistors 29K33 @ 25 ea set 3-pin Deans connectors 19K54 @ $135 Youll also want pair servo extension cables match RC system duplicate Georges setup youll also need small DPDTslide switch RMcM particular Radio Shack radio ideal purposes because old design uses interstage output transformers wont damaged forget switch loudspeaker AM radio before turning right now have cute little box contain ing loudspeaker can switched between servo-amplifier AM radio What good Starting basic Bird-Dog Figure 1 attach loudspeaker servo amplifier Inci dentally works because loudspeaker servo motor replaces have same impedance Now take servo extension Assistant Editor Doug Pratt impressed Georges Bird-Dog rushed homethat nightand built tested abouta half hour parts hand begin Note version AM radio capability Hes learned interesting things about RC interference local flying field already gadget clubmaybe fliershould have flight box 30 Model Aviation George M Myers prototype Electronic Bird-Dog built Fiuio ndii r40 IL I eceiver MS cen see Georges servo amplif ler bit too bulky fit space available cut window back cover make room forthe battery Mod makes battery easierto change Its held strio clear olastic tape Note added parts info article cable plug unused channel Retract channel good RC receiver Bring free end cable outside airplane cut hole mount like charging jack Take other extension cable plug receptacle have just created Cut free end off about 1-in plug may wish use something else Install Deans plug cut wires plug Bird-Dog Figure 3 Diagnoses 1 Turn off transmitter turn airplanes receiver a If hear apop click nothing normal b If hear BRRRRRR either someone else using frequency left transmitter cIfyouBRRRP.. .. BRRRP hearing intermodulation inter ference two other transmitters too close together too close have reprinted combinations will 1 I I SIGNAL DEANS SOCKET CONNECT THE MOTOR LEADS TO THE LOUDI SPEAKER IGNORE GROUND LEAD SERVOLOUDSPEAKER 8 OHMS pIzEJ1 CONNECT RESISTORS 1111 N PLACE OF FEED JJ BACK POTENTIOMETER I L USE SUITABLE ENCLOSUREJ Figure 1Basic Bird-Dog built Doug Pratt Can solder Build Bill Hershbergers listing Together ness Can Bring Glitches printed MA January 81 See youve got read AMA News section too Youre 72080 Guys Gang Up 72160 plus 72240 72240 plus 72400 7216072240 plus 72320 7224072080 plus 72160 72320 plus 72400 7240072080 plus 72240 72240 plus 72320 72320 72960 & 75640 dont have prob lem read 2 Now turn transmitter a If hear BRRRRRR normal b The burping sound can heard two trans mitters operating same frequency Figure 3Typical installation provision Bird-Dog Simplest imaginable scheme provided have extra control chan nel Remember unplug before taxiing out takeoff JEt LOUDSPEAKER case youve just shot down buddy c can get burping sound just other transmitter its operating too close YouThe Guy Whos Too Close 72080 72320 72160 72400 72320 72080 72400 72160 72960 72080 Note 75640 has stayed clean As Lord said Tower Babel EXTENSION CABLE EXTENSION CABLE Figure 2Advanced Bird-Dog Add AM radio DPDT switch build inside AM radio case George did Spread out guys add warning Pay attention taxi take off land distances between transmitters plays big part determining much interference encounter past knew servos jumping around Now can find out 3 Leave everything turned go looking other problems Pump fuel listen interference electric fuel pump b Connect glowdriver listen interference c Start engine listen interference d Have friends hold plane up center wing panels run engine up down speed range work controls may discover some on-board inter ference clattering metal parts partly severed wires bad battery cells and/or jumpy feedback pot wipers e Stop engine take off wing turn off Continued page 100 January 198231 THE BASIC BIRD-DOG DPDT SWITCH -u0 AM RADIO IEGAIN Losing control can night mare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inhouse radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control tO0 1925 E fly Futaba flEiU K. ro Line KRAFT Creighton RoadPensacola FL 32504904/478-6745 Safety Preston Continued page 12 lachymatory tear-producing can cause eye irritation tearing used poorly venti lated places modeler correspondents related experience lung congestion after visits doctor treatment allergies attributed problem use cyanoacrylate glues Satellite City brochure has say about mucous membranes Mucous surfaces can become irritated prolonged exposure cyanoacrylate vapors poorly ventilated areas Vapor irritation eyes mucous mem branes will noticeable under conditions low relative humidity visitor Australia staying us week during summer Some may know himFord Lloyd Australian team captain 1980 Scale World Champ ionships also Scale judge US Nats same year Ford mentioned having ex perienced sinus problems using cyano acrylate glues may have accentuated low humidity Australian climate So lookout such symptoms live Arizona use cyanoacrylates vapors cause problem maybe small fan near workbench would help wind up months column wed like alert untidy modelers possible fire hazard may exist because sloppy habits course doesnt apply majority us routinely clean up work area after building session! Some recent correspondence Dremel tells us adding paragraph instructions accompany belt sander will state following Cleaning Remove accumulated dust debris inside motor frequent intervals hold vacuum sweeper hose rear motor vents see figure 20 tapping motor housing screwdriver handle light non-marring hammer loosen dirt blow air motor will blow dirt bearings Failure keep motor clean will result overheating motor could result fire dust flam mable forewarned balsa dust flammable couple modelers have reported smolderingtype fires Dremel belt sanders modeler reported similar experience table saw have workbench like Bill Northrops see Bill Northrops Work bench issue ModelBuilder d have problem Have safe month John Preston 7012 Elvira Couri Falls Church VA 22042 writing edvertuaars mention read about Model Aviation Radio Technique/Myers Continued page 31 transmitter start moving wires around gently inside plane may find fractured wires some loose dirty plugs switch has taken too much caster oil antenna wire has fractured inside insula tion strain relief dozens other little gremlins Have fun point know some people saying Thatstoomuchtrouble Well Im saying have flight Just investigate little have reason tool lets listen problems can see making servos nervous little practice youll learn differentiate between RFI will effect flying wont crash ignorance 4 Moving advanced Bird-Dog see AM receiver offers least six useful functions a When charge transmitter impound area next contest will find AM radio quickest easiest way discover anyone has left atransmitterturned Merely touch screw holding volume control top antenna hear BRRR youll know its course AM receiver must turned volume must turned up can hear it must Continued page 102 u.s. 55rr t.Si.t 5E....I,.,SSSgS.....5tU .. . .. ....n..........nnm .i.......flfla, --MJ MAS ENTERPRISES 1979-1980SPECIALISTS IN cHAMPION M I1E _ F __roudly HeadRC HELICOPTERS HELl-BOY 40 HEADQUARTERS LT HELICOPTER Ot staff qoalified assser qoestiocs tatfing froro tstalling train gear flying yoor ship inserted SCHLUTER HELl BOY 60 Size CALL FOR OUR LOW PRICES Ssshlager Helissopser Pans Stock Including Pipes Fuselages Etc LOWEST PRICES WEBRA now available J WAS ENTEIjVHIaS- Us~Ilb P0 Box 727 Miami FL 33197 Phone 1305 255-0658,System S OVERSEAS DISTRIBUTORS Stock Helicopter Kits Accessories Engines @ Radios Parts S Books CR//CKFT Cricket Parts AMERICAN R/C MANTIS NOW ONLY $11998 -A 100 Model Aviation \ 14$ Aeromarimes BIG TRACT Electric Retractable s, ing Gear 1/5 Scale & 1/4 Scale Models proud present modeling public advanced well constructed landing gear designed 1/5 scale & 1/4 scale models up 85 pound weight components used systems ot best Quality available parts manutactured highest standards insure strength quailty reliable periormance system comes complete battery pack charger servo switch harnes 2 15 long estentions loctite mounting bolts 3 view full size drawing tor mall ing plan modifications electric retractable landing gear system has designed 8nd tested throughty suitable tor installation varity aircrah models units available TWIN GEAR MAINS TRI-GEAR MAINS steerable NOSE GEAR ROTATING MAINS Master Kits P-40 Nosen Corsair retractable steerable TAIL WHEEL special units Nick Ziroli Models AEROMARINE believe modeler should able build models live up true scale counter part both pertormance function think 1/4 scale retracts think BIG-TRACT Call write 8 page illustrated catalog retract systems available upon request Enclose $100 16 page catalog other fine products AEROMARINE ENTERPRIZES BOX 282 BEACHWOOD NJ 08722 201 240-3882 Cadillac Big Retracts Check out Standard features 50-60 Retract Cycles Per Charge Scale 10 Second Retract Time Aluminum & Stainless Steel Spring Loaded Air Shock 3 Sets Springs Custom Tune Tension Scale Oleo Strut Retract Angle Just 900 Can Set anywhere Between 800 & 1100 Making Universal Types Models Toe & Toe Out Wheel Can Adlusted Providi Correct Ground Handling Tracking unit independently operated self locking position Full 1 year warranty Completely assembled & ready operate via simple servo operation Looking Hard Find Soarinq Goodies 75/lie c3a4fane 5/acory o has complete Comprehensive line RIO Soaring products toeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products O We serve serious fl/C soaring enthusiast supplies kits other items have sought long Call write today Pree product listing & price sheet Sailplane Factory PO Box 341 Red Lion PA 17356 717 244-4508 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin 102 Model Aviation once used portable radio locate switch washing machine arcing continuously spoiling TV reception house another occasion located electric light bulb fractured kept welding itself together bulb produced annoying continuous noise AM radio sparkles TV until located Since bulb apparently working normally no suspected culprit till AM radio showed up Hold AM radio next fuel pump its pumping discover servos get nervous someone refueling nearby d As use tool will discover some transmitters emit very little energy antenna collapsed metal cased dis appearing antenna others emit quite bit plastic cased part section left exposed tells ones wary some assures theyre turned off pass new magic wand can give greater conft dence e The AM radio can give time signals weather forecasts wary ifs front expected pass through youre out flying news music company youre shop alone t Snaps crackles will warn approach electrical strom long before see lightning hear thunder might want move stuff car early wants caught standing rain Continued page 104 AVAILABLE NOW Woco UPF 7 90-Sipe &23g5 JR Spesiet MK iii 54 Mono 78 Ripe Weight iS ibs2195 Trevel Air 2000 105 Classic Scam Riplane 23 lbs 2295 Trevet Air 4000 99 Radial Rca Classic Ripe 23 ISs 2295 Fekkee 0-wi 85 Cecocac WW i Fightec Ripe 23 lbs2495 Conting seen Sopinith Pop 50 5ipe Sopech Trpehoccd 80 Tcjplaee Waco ATO Lylack Vecsice 50 5iplaoe SleaporI 11 5c5e 55 Sivlace 35 Scale rokke ORi 72 Tiplace Plans shipped UPS Pacel Post Please add $300 torpostage hand/mo fastesr serv/ce send pOstal money order No C 00 orders sent BEHRENS PLAN SERVICE 31-27 Healy Ave. Far Rockeway NY 11691 in2121 337-6987in Electronic Bird-Dog set up monitor receiver has plug-in crystal can monitor channel can get crystal within band course portable tape recorder shown because George offering try identify source interference recording cant yourself address end column tuned between stations controls time sound quality should b You might have reason wonder change time control moved controls transmitter working Hold c hold AM radio near strong operating AM receiver near transmitter electrical disturbances like noisy electric motors antenna get BRRRR sound work high-tension lines can hear static like Quadra. Youll Love PARTNER Optional twin-stack muffler Smoke version available Double-riep piston higher compression ft longer life Optional choke Iasy hand starting Special close-coupled tlgh-tension system less AT radiation Solid-beam type mount optional radial supports avail Roller thrust-hearing exclusively use model aircraft Power-balanced light-weight flywheel 37 SUPER POWER ROPER 24 KIORITZ ENGINE 22 PARTNER ENGINE 23 GUADRA ENGINE 79 ROPER ENGINE 79 ENGINE HUB & MOUNT PACK 79 USED DEMO ENGINE 79 ROPER ENGINE KIT BALENCED 6-BOLT HUB Ropa Parlaar S Oaadraj PROP DRILL JIG RADIAL MOUNT-Rap 37 & 79 RADIAL MOUNT Pad,, RETAIL $24900 21200 12500 13500 9500 7995 1495 SALE 18900 77995 8995 8995 4995 6500 2500 3995 702995 7637295 1237000 Introducing An updated ver sian popular engine Note improvements made especially miniature aircraft Roller Thrust-Bearing Double-Ring Piston Spark Plug Location Low3 1/2 lb Weight Power Output LIMITED TIME OFrER ~LIST $12500 SALE $8995 prop hub Optional brite spinner starter cotd gmove SALE 2495 1000 500 850 795 250 7000 1000 2000 WRITE OR CALL Send 1 8C Stamp Catalogl Will Ship Orders Same Day COD UFiS HORNERS SALESINCRt2Box 9 300 Dixie Hwy.Beecher IL 504431 312 946-2515 131SEMI-SCALE 1920 RUNABOUT PJFIIFLIEfPIl-ft RADIO CONTROLLED NON-RIGID AIRSNIP PRACTICAL SIZE Can Lift 20 00 Use Standard Radios t3 4 Channel] Reqsrsn U Cobb Ft Helion Hollow Available Weldine Sapply Shops FULL CONTROL Modern Thrsnt-Aerodynanis Control Forward Hover Bachward Elevation Torn Ballast Hetiaw Ileleane COMPLETE KIT Fonsed Plastic Die-Cot Balsa $249Plywood Parts Moanling Hardware Wire Plots Switches Bosh Esplain Blimp Operation Detailed Plans Photos Completely Fabri catod Vinyl Holism Envelope Elvotric Motors Radio Batteries NOW YOU CAN FLY YOUR OWNNot Included ELECTRIC POWERED BLIMPCOMPLETE CATALOG $100 Pfldecja 8* lea aem nsaPO BOX 2498 -MALA MESA CALIF 92041 WuiKuVfyUuGPHONE 714 469-8675 714 442-4636 104 Model Aviation lightning rod hands know youre weary reading suggestions bear bit longer whole thing started couple friends Paul Bell Ron Farkas asked Cheap RC channel monitor started idea could add output transformer detector stage RC receiver listen earphones loudspeaker can can locate transformer some junked port able AM radio Unfortunately monitor func tion isnt worth much assessing causes interference plane air cause have both hands full trying get nose up engine stopped buddy might take monitor walk halfway RFI source could quite walk because up sky planes receiver can hearthings miles around Up close monitor can hear own transmitter cant accomplish much wear thing shirt pocket other hand monitor has value sur veying scene before turn transmitter want can plug birddog RC receiver offers interchange able crystals like Airtronics XL Plug crystal channels interested listen Figure 3 cases suspect youre going interested channel intend fly airplane receiver need Electronic Bird-Dog version will costless scanner can buy its versatile wont good dont use Get habit carrying flight box Should elect use suggested Radio Shack radio will find comes tn stout cardboard box makes nice protec tive cover Failing use small camera case final thought compliments Ron Farkas Bird-Dog checks bands 27 35 49 53 72 75 MHz Aint nice Keep letters coming George Myers 70FroehliCh Form Rd Hicks yule NY 11801 Acapulco Diary/Keck Continued page 37 feels results fair representation Hanno Prettner uses bells whistle flying Dave Brown uses very basic setup dont think uses mixture control uses exposed pipe nothing closed Daves real sportsman has problems keeps right smiling dont know what guts doing time outside sure looked collected can proud him job has done team members have certainly come through again flying colors Tony Bonetti new National Champ showed up competition talking together afterwards about just what changes would make aircraft next year both agreed designs flying right now pretty basic way improve work small details lots practice list winners shows wide range good combinations its does practicing gets act together thats going winning Betty Sue Stream helped tabulat ing sunny dispositions competence very reassuring important job banquet something disappointment started late cleared entire group go out beach finally called quits went bed heard later bomb scare rumor fouled up banquet Mexican people have put forward good Homers Specials PART 112 118 117 108 709 119 110 111 107 TWIN STACK EXHAUST-37 & Ko,tz 105 TWIN STACK EXHAUST- Pad,, 120 CHOKE ASSEMBLY- Pen, & 0,ada 121 BRITE SPINNER- Ropa PadS Goad 122 NEOPRENE GAS LINE- p foot 107 RESISTOR SPARK PLUG RCJ-6 113 TO UPDATE EARLY MODEL 37 ENG Nasr dealg, ad beak 37 EXCHANGE Spasaal nechiaed AhaaL 37 BaBbaaiwg fro,t hosg 37 BIG PROPS AVAILABLE Fi,shad eatd balnced sood ALUMINUM HUB WHEELS Finest Wheels Made Feature AUTHENTIC APPEARANCE s EASY & FAST ASSEMBLY Rugged construction aluminum Readily installed removed hub balloon type Equipped Built-in treaded tire retaining device LONG-LASTING SPONGE light weight 0Pat App for
Edition: Model Aviation - 1982/01
Page Numbers: 30, 31, 100, 102, 104
echuiquc THE ELECTRONIC BIRD-DOG multi purpose tool thats easy build thing Im sure readers like gadgets simple cheap effective device finds RFI Radio Frequency Interference sources costs about $25 Needing example illustrate column Went nearby Radio Shack pick up loud speaker boxFigure 1 charmed item 12-172 tiny AM radio Im holding lead photo little investi gation revealed removed block foam rubber under 9 volt battery cavity revealed seemed large enough hold servo amplifier opened vistas expanded capability gave temptation bought Actually expect dear reader may have suitable portable radio junked servo can scavenged parts wont have buy anything must buy parts radio sale $895 can get servo-amplifier kit Ace RC 1 4G25B $1095 pair 22K resistors 29K33 @ 25 ea set 3-pin Deans connectors 19K54 @ $135 Youll also want pair servo extension cables match RC system duplicate Georges setup youll also need small DPDTslide switch RMcM particular Radio Shack radio ideal purposes because old design uses interstage output transformers wont damaged forget switch loudspeaker AM radio before turning right now have cute little box contain ing loudspeaker can switched between servo-amplifier AM radio What good Starting basic Bird-Dog Figure 1 attach loudspeaker servo amplifier Inci dentally works because loudspeaker servo motor replaces have same impedance Now take servo extension Assistant Editor Doug Pratt impressed Georges Bird-Dog rushed homethat nightand built tested abouta half hour parts hand begin Note version AM radio capability Hes learned interesting things about RC interference local flying field already gadget clubmaybe fliershould have flight box 30 Model Aviation George M Myers prototype Electronic Bird-Dog built Fiuio ndii r40 IL I eceiver MS cen see Georges servo amplif ler bit too bulky fit space available cut window back cover make room forthe battery Mod makes battery easierto change Its held strio clear olastic tape Note added parts info article cable plug unused channel Retract channel good RC receiver Bring free end cable outside airplane cut hole mount like charging jack Take other extension cable plug receptacle have just created Cut free end off about 1-in plug may wish use something else Install Deans plug cut wires plug Bird-Dog Figure 3 Diagnoses 1 Turn off transmitter turn airplanes receiver a If hear apop click nothing normal b If hear BRRRRRR either someone else using frequency left transmitter cIfyouBRRRP.. .. BRRRP hearing intermodulation inter ference two other transmitters too close together too close have reprinted combinations will 1 I I SIGNAL DEANS SOCKET CONNECT THE MOTOR LEADS TO THE LOUDI SPEAKER IGNORE GROUND LEAD SERVOLOUDSPEAKER 8 OHMS pIzEJ1 CONNECT RESISTORS 1111 N PLACE OF FEED JJ BACK POTENTIOMETER I L USE SUITABLE ENCLOSUREJ Figure 1Basic Bird-Dog built Doug Pratt Can solder Build Bill Hershbergers listing Together ness Can Bring Glitches printed MA January 81 See youve got read AMA News section too Youre 72080 Guys Gang Up 72160 plus 72240 72240 plus 72400 7216072240 plus 72320 7224072080 plus 72160 72320 plus 72400 7240072080 plus 72240 72240 plus 72320 72320 72960 & 75640 dont have prob lem read 2 Now turn transmitter a If hear BRRRRRR normal b The burping sound can heard two trans mitters operating same frequency Figure 3Typical installation provision Bird-Dog Simplest imaginable scheme provided have extra control chan nel Remember unplug before taxiing out takeoff JEt LOUDSPEAKER case youve just shot down buddy c can get burping sound just other transmitter its operating too close YouThe Guy Whos Too Close 72080 72320 72160 72400 72320 72080 72400 72160 72960 72080 Note 75640 has stayed clean As Lord said Tower Babel EXTENSION CABLE EXTENSION CABLE Figure 2Advanced Bird-Dog Add AM radio DPDT switch build inside AM radio case George did Spread out guys add warning Pay attention taxi take off land distances between transmitters plays big part determining much interference encounter past knew servos jumping around Now can find out 3 Leave everything turned go looking other problems Pump fuel listen interference electric fuel pump b Connect glowdriver listen interference c Start engine listen interference d Have friends hold plane up center wing panels run engine up down speed range work controls may discover some on-board inter ference clattering metal parts partly severed wires bad battery cells and/or jumpy feedback pot wipers e Stop engine take off wing turn off Continued page 100 January 198231 THE BASIC BIRD-DOG DPDT SWITCH -u0 AM RADIO IEGAIN Losing control can night mare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inhouse radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control tO0 1925 E fly Futaba flEiU K. ro Line KRAFT Creighton RoadPensacola FL 32504904/478-6745 Safety Preston Continued page 12 lachymatory tear-producing can cause eye irritation tearing used poorly venti lated places modeler correspondents related experience lung congestion after visits doctor treatment allergies attributed problem use cyanoacrylate glues Satellite City brochure has say about mucous membranes Mucous surfaces can become irritated prolonged exposure cyanoacrylate vapors poorly ventilated areas Vapor irritation eyes mucous mem branes will noticeable under conditions low relative humidity visitor Australia staying us week during summer Some may know himFord Lloyd Australian team captain 1980 Scale World Champ ionships also Scale judge US Nats same year Ford mentioned having ex perienced sinus problems using cyano acrylate glues may have accentuated low humidity Australian climate So lookout such symptoms live Arizona use cyanoacrylates vapors cause problem maybe small fan near workbench would help wind up months column wed like alert untidy modelers possible fire hazard may exist because sloppy habits course doesnt apply majority us routinely clean up work area after building session! Some recent correspondence Dremel tells us adding paragraph instructions accompany belt sander will state following Cleaning Remove accumulated dust debris inside motor frequent intervals hold vacuum sweeper hose rear motor vents see figure 20 tapping motor housing screwdriver handle light non-marring hammer loosen dirt blow air motor will blow dirt bearings Failure keep motor clean will result overheating motor could result fire dust flam mable forewarned balsa dust flammable couple modelers have reported smolderingtype fires Dremel belt sanders modeler reported similar experience table saw have workbench like Bill Northrops see Bill Northrops Work bench issue ModelBuilder d have problem Have safe month John Preston 7012 Elvira Couri Falls Church VA 22042 writing edvertuaars mention read about Model Aviation Radio Technique/Myers Continued page 31 transmitter start moving wires around gently inside plane may find fractured wires some loose dirty plugs switch has taken too much caster oil antenna wire has fractured inside insula tion strain relief dozens other little gremlins Have fun point know some people saying Thatstoomuchtrouble Well Im saying have flight Just investigate little have reason tool lets listen problems can see making servos nervous little practice youll learn differentiate between RFI will effect flying wont crash ignorance 4 Moving advanced Bird-Dog see AM receiver offers least six useful functions a When charge transmitter impound area next contest will find AM radio quickest easiest way discover anyone has left atransmitterturned Merely touch screw holding volume control top antenna hear BRRR youll know its course AM receiver must turned volume must turned up can hear it must Continued page 102 u.s. 55rr t.Si.t 5E....I,.,SSSgS.....5tU .. . .. ....n..........nnm .i.......flfla, --MJ MAS ENTERPRISES 1979-1980SPECIALISTS IN cHAMPION M I1E _ F __roudly HeadRC HELICOPTERS HELl-BOY 40 HEADQUARTERS LT HELICOPTER Ot staff qoalified assser qoestiocs tatfing froro tstalling train gear flying yoor ship inserted SCHLUTER HELl BOY 60 Size CALL FOR OUR LOW PRICES Ssshlager Helissopser Pans Stock Including Pipes Fuselages Etc LOWEST PRICES WEBRA now available J WAS ENTEIjVHIaS- Us~Ilb P0 Box 727 Miami FL 33197 Phone 1305 255-0658,System S OVERSEAS DISTRIBUTORS Stock Helicopter Kits Accessories Engines @ Radios Parts S Books CR//CKFT Cricket Parts AMERICAN R/C MANTIS NOW ONLY $11998 -A 100 Model Aviation \ 14$ Aeromarimes BIG TRACT Electric Retractable s, ing Gear 1/5 Scale & 1/4 Scale Models proud present modeling public advanced well constructed landing gear designed 1/5 scale & 1/4 scale models up 85 pound weight components used systems ot best Quality available parts manutactured highest standards insure strength quailty reliable periormance system comes complete battery pack charger servo switch harnes 2 15 long estentions loctite mounting bolts 3 view full size drawing tor mall ing plan modifications electric retractable landing gear system has designed 8nd tested throughty suitable tor installation varity aircrah models units available TWIN GEAR MAINS TRI-GEAR MAINS steerable NOSE GEAR ROTATING MAINS Master Kits P-40 Nosen Corsair retractable steerable TAIL WHEEL special units Nick Ziroli Models AEROMARINE believe modeler should able build models live up true scale counter part both pertormance function think 1/4 scale retracts think BIG-TRACT Call write 8 page illustrated catalog retract systems available upon request Enclose $100 16 page catalog other fine products AEROMARINE ENTERPRIZES BOX 282 BEACHWOOD NJ 08722 201 240-3882 Cadillac Big Retracts Check out Standard features 50-60 Retract Cycles Per Charge Scale 10 Second Retract Time Aluminum & Stainless Steel Spring Loaded Air Shock 3 Sets Springs Custom Tune Tension Scale Oleo Strut Retract Angle Just 900 Can Set anywhere Between 800 & 1100 Making Universal Types Models Toe & Toe Out Wheel Can Adlusted Providi Correct Ground Handling Tracking unit independently operated self locking position Full 1 year warranty Completely assembled & ready operate via simple servo operation Looking Hard Find Soarinq Goodies 75/lie c3a4fane 5/acory o has complete Comprehensive line RIO Soaring products toeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products O We serve serious fl/C soaring enthusiast supplies kits other items have sought long Call write today Pree product listing & price sheet Sailplane Factory PO Box 341 Red Lion PA 17356 717 244-4508 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin 102 Model Aviation once used portable radio locate switch washing machine arcing continuously spoiling TV reception house another occasion located electric light bulb fractured kept welding itself together bulb produced annoying continuous noise AM radio sparkles TV until located Since bulb apparently working normally no suspected culprit till AM radio showed up Hold AM radio next fuel pump its pumping discover servos get nervous someone refueling nearby d As use tool will discover some transmitters emit very little energy antenna collapsed metal cased dis appearing antenna others emit quite bit plastic cased part section left exposed tells ones wary some assures theyre turned off pass new magic wand can give greater conft dence e The AM radio can give time signals weather forecasts wary ifs front expected pass through youre out flying news music company youre shop alone t Snaps crackles will warn approach electrical strom long before see lightning hear thunder might want move stuff car early wants caught standing rain Continued page 104 AVAILABLE NOW Woco UPF 7 90-Sipe &23g5 JR Spesiet MK iii 54 Mono 78 Ripe Weight iS ibs2195 Trevel Air 2000 105 Classic Scam Riplane 23 lbs 2295 Trevet Air 4000 99 Radial Rca Classic Ripe 23 ISs 2295 Fekkee 0-wi 85 Cecocac WW i Fightec Ripe 23 lbs2495 Conting seen Sopinith Pop 50 5ipe Sopech Trpehoccd 80 Tcjplaee Waco ATO Lylack Vecsice 50 5iplaoe SleaporI 11 5c5e 55 Sivlace 35 Scale rokke ORi 72 Tiplace Plans shipped UPS Pacel Post Please add $300 torpostage hand/mo fastesr serv/ce send pOstal money order No C 00 orders sent BEHRENS PLAN SERVICE 31-27 Healy Ave. Far Rockeway NY 11691 in2121 337-6987in Electronic Bird-Dog set up monitor receiver has plug-in crystal can monitor channel can get crystal within band course portable tape recorder shown because George offering try identify source interference recording cant yourself address end column tuned between stations controls time sound quality should b You might have reason wonder change time control moved controls transmitter working Hold c hold AM radio near strong operating AM receiver near transmitter electrical disturbances like noisy electric motors antenna get BRRRR sound work high-tension lines can hear static like Quadra. Youll Love PARTNER Optional twin-stack muffler Smoke version available Double-riep piston higher compression ft longer life Optional choke Iasy hand starting Special close-coupled tlgh-tension system less AT radiation Solid-beam type mount optional radial supports avail Roller thrust-hearing exclusively use model aircraft Power-balanced light-weight flywheel 37 SUPER POWER ROPER 24 KIORITZ ENGINE 22 PARTNER ENGINE 23 GUADRA ENGINE 79 ROPER ENGINE 79 ENGINE HUB & MOUNT PACK 79 USED DEMO ENGINE 79 ROPER ENGINE KIT BALENCED 6-BOLT HUB Ropa Parlaar S Oaadraj PROP DRILL JIG RADIAL MOUNT-Rap 37 & 79 RADIAL MOUNT Pad,, RETAIL $24900 21200 12500 13500 9500 7995 1495 SALE 18900 77995 8995 8995 4995 6500 2500 3995 702995 7637295 1237000 Introducing An updated ver sian popular engine Note improvements made especially miniature aircraft Roller Thrust-Bearing Double-Ring Piston Spark Plug Location Low3 1/2 lb Weight Power Output LIMITED TIME OFrER ~LIST $12500 SALE $8995 prop hub Optional brite spinner starter cotd gmove SALE 2495 1000 500 850 795 250 7000 1000 2000 WRITE OR CALL Send 1 8C Stamp Catalogl Will Ship Orders Same Day COD UFiS HORNERS SALESINCRt2Box 9 300 Dixie Hwy.Beecher IL 504431 312 946-2515 131SEMI-SCALE 1920 RUNABOUT PJFIIFLIEfPIl-ft RADIO CONTROLLED NON-RIGID AIRSNIP PRACTICAL SIZE Can Lift 20 00 Use Standard Radios t3 4 Channel] Reqsrsn U Cobb Ft Helion Hollow Available Weldine Sapply Shops FULL CONTROL Modern Thrsnt-Aerodynanis Control Forward Hover Bachward Elevation Torn Ballast Hetiaw Ileleane COMPLETE KIT Fonsed Plastic Die-Cot Balsa $249Plywood Parts Moanling Hardware Wire Plots Switches Bosh Esplain Blimp Operation Detailed Plans Photos Completely Fabri catod Vinyl Holism Envelope Elvotric Motors Radio Batteries NOW YOU CAN FLY YOUR OWNNot Included ELECTRIC POWERED BLIMPCOMPLETE CATALOG $100 Pfldecja 8* lea aem nsaPO BOX 2498 -MALA MESA CALIF 92041 WuiKuVfyUuGPHONE 714 469-8675 714 442-4636 104 Model Aviation lightning rod hands know youre weary reading suggestions bear bit longer whole thing started couple friends Paul Bell Ron Farkas asked Cheap RC channel monitor started idea could add output transformer detector stage RC receiver listen earphones loudspeaker can can locate transformer some junked port able AM radio Unfortunately monitor func tion isnt worth much assessing causes interference plane air cause have both hands full trying get nose up engine stopped buddy might take monitor walk halfway RFI source could quite walk because up sky planes receiver can hearthings miles around Up close monitor can hear own transmitter cant accomplish much wear thing shirt pocket other hand monitor has value sur veying scene before turn transmitter want can plug birddog RC receiver offers interchange able crystals like Airtronics XL Plug crystal channels interested listen Figure 3 cases suspect youre going interested channel intend fly airplane receiver need Electronic Bird-Dog version will costless scanner can buy its versatile wont good dont use Get habit carrying flight box Should elect use suggested Radio Shack radio will find comes tn stout cardboard box makes nice protec tive cover Failing use small camera case final thought compliments Ron Farkas Bird-Dog checks bands 27 35 49 53 72 75 MHz Aint nice Keep letters coming George Myers 70FroehliCh Form Rd Hicks yule NY 11801 Acapulco Diary/Keck Continued page 37 feels results fair representation Hanno Prettner uses bells whistle flying Dave Brown uses very basic setup dont think uses mixture control uses exposed pipe nothing closed Daves real sportsman has problems keeps right smiling dont know what guts doing time outside sure looked collected can proud him job has done team members have certainly come through again flying colors Tony Bonetti new National Champ showed up competition talking together afterwards about just what changes would make aircraft next year both agreed designs flying right now pretty basic way improve work small details lots practice list winners shows wide range good combinations its does practicing gets act together thats going winning Betty Sue Stream helped tabulat ing sunny dispositions competence very reassuring important job banquet something disappointment started late cleared entire group go out beach finally called quits went bed heard later bomb scare rumor fouled up banquet Mexican people have put forward good Homers Specials PART 112 118 117 108 709 119 110 111 107 TWIN STACK EXHAUST-37 & Ko,tz 105 TWIN STACK EXHAUST- Pad,, 120 CHOKE ASSEMBLY- Pen, & 0,ada 121 BRITE SPINNER- Ropa PadS Goad 122 NEOPRENE GAS LINE- p foot 107 RESISTOR SPARK PLUG RCJ-6 113 TO UPDATE EARLY MODEL 37 ENG Nasr dealg, ad beak 37 EXCHANGE Spasaal nechiaed AhaaL 37 BaBbaaiwg fro,t hosg 37 BIG PROPS AVAILABLE Fi,shad eatd balnced sood ALUMINUM HUB WHEELS Finest Wheels Made Feature AUTHENTIC APPEARANCE s EASY & FAST ASSEMBLY Rugged construction aluminum Readily installed removed hub balloon type Equipped Built-in treaded tire retaining device LONG-LASTING SPONGE light weight 0Pat App for
Edition: Model Aviation - 1982/01
Page Numbers: 30, 31, 100, 102, 104
echuiquc THE ELECTRONIC BIRD-DOG multi purpose tool thats easy build thing Im sure readers like gadgets simple cheap effective device finds RFI Radio Frequency Interference sources costs about $25 Needing example illustrate column Went nearby Radio Shack pick up loud speaker boxFigure 1 charmed item 12-172 tiny AM radio Im holding lead photo little investi gation revealed removed block foam rubber under 9 volt battery cavity revealed seemed large enough hold servo amplifier opened vistas expanded capability gave temptation bought Actually expect dear reader may have suitable portable radio junked servo can scavenged parts wont have buy anything must buy parts radio sale $895 can get servo-amplifier kit Ace RC 1 4G25B $1095 pair 22K resistors 29K33 @ 25 ea set 3-pin Deans connectors 19K54 @ $135 Youll also want pair servo extension cables match RC system duplicate Georges setup youll also need small DPDTslide switch RMcM particular Radio Shack radio ideal purposes because old design uses interstage output transformers wont damaged forget switch loudspeaker AM radio before turning right now have cute little box contain ing loudspeaker can switched between servo-amplifier AM radio What good Starting basic Bird-Dog Figure 1 attach loudspeaker servo amplifier Inci dentally works because loudspeaker servo motor replaces have same impedance Now take servo extension Assistant Editor Doug Pratt impressed Georges Bird-Dog rushed homethat nightand built tested abouta half hour parts hand begin Note version AM radio capability Hes learned interesting things about RC interference local flying field already gadget clubmaybe fliershould have flight box 30 Model Aviation George M Myers prototype Electronic Bird-Dog built Fiuio ndii r40 IL I eceiver MS cen see Georges servo amplif ler bit too bulky fit space available cut window back cover make room forthe battery Mod makes battery easierto change Its held strio clear olastic tape Note added parts info article cable plug unused channel Retract channel good RC receiver Bring free end cable outside airplane cut hole mount like charging jack Take other extension cable plug receptacle have just created Cut free end off about 1-in plug may wish use something else Install Deans plug cut wires plug Bird-Dog Figure 3 Diagnoses 1 Turn off transmitter turn airplanes receiver a If hear apop click nothing normal b If hear BRRRRRR either someone else using frequency left transmitter cIfyouBRRRP.. .. BRRRP hearing intermodulation inter ference two other transmitters too close together too close have reprinted combinations will 1 I I SIGNAL DEANS SOCKET CONNECT THE MOTOR LEADS TO THE LOUDI SPEAKER IGNORE GROUND LEAD SERVOLOUDSPEAKER 8 OHMS pIzEJ1 CONNECT RESISTORS 1111 N PLACE OF FEED JJ BACK POTENTIOMETER I L USE SUITABLE ENCLOSUREJ Figure 1Basic Bird-Dog built Doug Pratt Can solder Build Bill Hershbergers listing Together ness Can Bring Glitches printed MA January 81 See youve got read AMA News section too Youre 72080 Guys Gang Up 72160 plus 72240 72240 plus 72400 7216072240 plus 72320 7224072080 plus 72160 72320 plus 72400 7240072080 plus 72240 72240 plus 72320 72320 72960 & 75640 dont have prob lem read 2 Now turn transmitter a If hear BRRRRRR normal b The burping sound can heard two trans mitters operating same frequency Figure 3Typical installation provision Bird-Dog Simplest imaginable scheme provided have extra control chan nel Remember unplug before taxiing out takeoff JEt LOUDSPEAKER case youve just shot down buddy c can get burping sound just other transmitter its operating too close YouThe Guy Whos Too Close 72080 72320 72160 72400 72320 72080 72400 72160 72960 72080 Note 75640 has stayed clean As Lord said Tower Babel EXTENSION CABLE EXTENSION CABLE Figure 2Advanced Bird-Dog Add AM radio DPDT switch build inside AM radio case George did Spread out guys add warning Pay attention taxi take off land distances between transmitters plays big part determining much interference encounter past knew servos jumping around Now can find out 3 Leave everything turned go looking other problems Pump fuel listen interference electric fuel pump b Connect glowdriver listen interference c Start engine listen interference d Have friends hold plane up center wing panels run engine up down speed range work controls may discover some on-board inter ference clattering metal parts partly severed wires bad battery cells and/or jumpy feedback pot wipers e Stop engine take off wing turn off Continued page 100 January 198231 THE BASIC BIRD-DOG DPDT SWITCH -u0 AM RADIO IEGAIN Losing control can night mare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical inhouse radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control tO0 1925 E fly Futaba flEiU K. ro Line KRAFT Creighton RoadPensacola FL 32504904/478-6745 Safety Preston Continued page 12 lachymatory tear-producing can cause eye irritation tearing used poorly venti lated places modeler correspondents related experience lung congestion after visits doctor treatment allergies attributed problem use cyanoacrylate glues Satellite City brochure has say about mucous membranes Mucous surfaces can become irritated prolonged exposure cyanoacrylate vapors poorly ventilated areas Vapor irritation eyes mucous mem branes will noticeable under conditions low relative humidity visitor Australia staying us week during summer Some may know himFord Lloyd Australian team captain 1980 Scale World Champ ionships also Scale judge US Nats same year Ford mentioned having ex perienced sinus problems using cyano acrylate glues may have accentuated low humidity Australian climate So lookout such symptoms live Arizona use cyanoacrylates vapors cause problem maybe small fan near workbench would help wind up months column wed like alert untidy modelers possible fire hazard may exist because sloppy habits course doesnt apply majority us routinely clean up work area after building session! Some recent correspondence Dremel tells us adding paragraph instructions accompany belt sander will state following Cleaning Remove accumulated dust debris inside motor frequent intervals hold vacuum sweeper hose rear motor vents see figure 20 tapping motor housing screwdriver handle light non-marring hammer loosen dirt blow air motor will blow dirt bearings Failure keep motor clean will result overheating motor could result fire dust flam mable forewarned balsa dust flammable couple modelers have reported smolderingtype fires Dremel belt sanders modeler reported similar experience table saw have workbench like Bill Northrops see Bill Northrops Work bench issue ModelBuilder d have problem Have safe month John Preston 7012 Elvira Couri Falls Church VA 22042 writing edvertuaars mention read about Model Aviation Radio Technique/Myers Continued page 31 transmitter start moving wires around gently inside plane may find fractured wires some loose dirty plugs switch has taken too much caster oil antenna wire has fractured inside insula tion strain relief dozens other little gremlins Have fun point know some people saying Thatstoomuchtrouble Well Im saying have flight Just investigate little have reason tool lets listen problems can see making servos nervous little practice youll learn differentiate between RFI will effect flying wont crash ignorance 4 Moving advanced Bird-Dog see AM receiver offers least six useful functions a When charge transmitter impound area next contest will find AM radio quickest easiest way discover anyone has left atransmitterturned Merely touch screw holding volume control top antenna hear BRRR youll know its course AM receiver must turned volume must turned up can hear it must Continued page 102 u.s. 55rr t.Si.t 5E....I,.,SSSgS.....5tU .. . .. ....n..........nnm .i.......flfla, --MJ MAS ENTERPRISES 1979-1980SPECIALISTS IN cHAMPION M I1E _ F __roudly HeadRC HELICOPTERS HELl-BOY 40 HEADQUARTERS LT HELICOPTER Ot staff qoalified assser qoestiocs tatfing froro tstalling train gear flying yoor ship inserted SCHLUTER HELl BOY 60 Size CALL FOR OUR LOW PRICES Ssshlager Helissopser Pans Stock Including Pipes Fuselages Etc LOWEST PRICES WEBRA now available J WAS ENTEIjVHIaS- Us~Ilb P0 Box 727 Miami FL 33197 Phone 1305 255-0658,System S OVERSEAS DISTRIBUTORS Stock Helicopter Kits Accessories Engines @ Radios Parts S Books CR//CKFT Cricket Parts AMERICAN R/C MANTIS NOW ONLY $11998 -A 100 Model Aviation \ 14$ Aeromarimes BIG TRACT Electric Retractable s, ing Gear 1/5 Scale & 1/4 Scale Models proud present modeling public advanced well constructed landing gear designed 1/5 scale & 1/4 scale models up 85 pound weight components used systems ot best Quality available parts manutactured highest standards insure strength quailty reliable periormance system comes complete battery pack charger servo switch harnes 2 15 long estentions loctite mounting bolts 3 view full size drawing tor mall ing plan modifications electric retractable landing gear system has designed 8nd tested throughty suitable tor installation varity aircrah models units available TWIN GEAR MAINS TRI-GEAR MAINS steerable NOSE GEAR ROTATING MAINS Master Kits P-40 Nosen Corsair retractable steerable TAIL WHEEL special units Nick Ziroli Models AEROMARINE believe modeler should able build models live up true scale counter part both pertormance function think 1/4 scale retracts think BIG-TRACT Call write 8 page illustrated catalog retract systems available upon request Enclose $100 16 page catalog other fine products AEROMARINE ENTERPRIZES BOX 282 BEACHWOOD NJ 08722 201 240-3882 Cadillac Big Retracts Check out Standard features 50-60 Retract Cycles Per Charge Scale 10 Second Retract Time Aluminum & Stainless Steel Spring Loaded Air Shock 3 Sets Springs Custom Tune Tension Scale Oleo Strut Retract Angle Just 900 Can Set anywhere Between 800 & 1100 Making Universal Types Models Toe & Toe Out Wheel Can Adlusted Providi Correct Ground Handling Tracking unit independently operated self locking position Full 1 year warranty Completely assembled & ready operate via simple servo operation Looking Hard Find Soarinq Goodies 75/lie c3a4fane 5/acory o has complete Comprehensive line RIO Soaring products toeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products O We serve serious fl/C soaring enthusiast supplies kits other items have sought long Call write today Pree product listing & price sheet Sailplane Factory PO Box 341 Red Lion PA 17356 717 244-4508 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin 102 Model Aviation once used portable radio locate switch washing machine arcing continuously spoiling TV reception house another occasion located electric light bulb fractured kept welding itself together bulb produced annoying continuous noise AM radio sparkles TV until located Since bulb apparently working normally no suspected culprit till AM radio showed up Hold AM radio next fuel pump its pumping discover servos get nervous someone refueling nearby d As use tool will discover some transmitters emit very little energy antenna collapsed metal cased dis appearing antenna others emit quite bit plastic cased part section left exposed tells ones wary some assures theyre turned off pass new magic wand can give greater conft dence e The AM radio can give time signals weather forecasts wary ifs front expected pass through youre out flying news music company youre shop alone t Snaps crackles will warn approach electrical strom long before see lightning hear thunder might want move stuff car early wants caught standing rain Continued page 104 AVAILABLE NOW Woco UPF 7 90-Sipe &23g5 JR Spesiet MK iii 54 Mono 78 Ripe Weight iS ibs2195 Trevel Air 2000 105 Classic Scam Riplane 23 lbs 2295 Trevet Air 4000 99 Radial Rca Classic Ripe 23 ISs 2295 Fekkee 0-wi 85 Cecocac WW i Fightec Ripe 23 lbs2495 Conting seen Sopinith Pop 50 5ipe Sopech Trpehoccd 80 Tcjplaee Waco ATO Lylack Vecsice 50 5iplaoe SleaporI 11 5c5e 55 Sivlace 35 Scale rokke ORi 72 Tiplace Plans shipped UPS Pacel Post Please add $300 torpostage hand/mo fastesr serv/ce send pOstal money order No C 00 orders sent BEHRENS PLAN SERVICE 31-27 Healy Ave. Far Rockeway NY 11691 in2121 337-6987in Electronic Bird-Dog set up monitor receiver has plug-in crystal can monitor channel can get crystal within band course portable tape recorder shown because George offering try identify source interference recording cant yourself address end column tuned between stations controls time sound quality should b You might have reason wonder change time control moved controls transmitter working Hold c hold AM radio near strong operating AM receiver near transmitter electrical disturbances like noisy electric motors antenna get BRRRR sound work high-tension lines can hear static like Quadra. Youll Love PARTNER Optional twin-stack muffler Smoke version available Double-riep piston higher compression ft longer life Optional choke Iasy hand starting Special close-coupled tlgh-tension system less AT radiation Solid-beam type mount optional radial supports avail Roller thrust-hearing exclusively use model aircraft Power-balanced light-weight flywheel 37 SUPER POWER ROPER 24 KIORITZ ENGINE 22 PARTNER ENGINE 23 GUADRA ENGINE 79 ROPER ENGINE 79 ENGINE HUB & MOUNT PACK 79 USED DEMO ENGINE 79 ROPER ENGINE KIT BALENCED 6-BOLT HUB Ropa Parlaar S Oaadraj PROP DRILL JIG RADIAL MOUNT-Rap 37 & 79 RADIAL MOUNT Pad,, RETAIL $24900 21200 12500 13500 9500 7995 1495 SALE 18900 77995 8995 8995 4995 6500 2500 3995 702995 7637295 1237000 Introducing An updated ver sian popular engine Note improvements made especially miniature aircraft Roller Thrust-Bearing Double-Ring Piston Spark Plug Location Low3 1/2 lb Weight Power Output LIMITED TIME OFrER ~LIST $12500 SALE $8995 prop hub Optional brite spinner starter cotd gmove SALE 2495 1000 500 850 795 250 7000 1000 2000 WRITE OR CALL Send 1 8C Stamp Catalogl Will Ship Orders Same Day COD UFiS HORNERS SALESINCRt2Box 9 300 Dixie Hwy.Beecher IL 504431 312 946-2515 131SEMI-SCALE 1920 RUNABOUT PJFIIFLIEfPIl-ft RADIO CONTROLLED NON-RIGID AIRSNIP PRACTICAL SIZE Can Lift 20 00 Use Standard Radios t3 4 Channel] Reqsrsn U Cobb Ft Helion Hollow Available Weldine Sapply Shops FULL CONTROL Modern Thrsnt-Aerodynanis Control Forward Hover Bachward Elevation Torn Ballast Hetiaw Ileleane COMPLETE KIT Fonsed Plastic Die-Cot Balsa $249Plywood Parts Moanling Hardware Wire Plots Switches Bosh Esplain Blimp Operation Detailed Plans Photos Completely Fabri catod Vinyl Holism Envelope Elvotric Motors Radio Batteries NOW YOU CAN FLY YOUR OWNNot Included ELECTRIC POWERED BLIMPCOMPLETE CATALOG $100 Pfldecja 8* lea aem nsaPO BOX 2498 -MALA MESA CALIF 92041 WuiKuVfyUuGPHONE 714 469-8675 714 442-4636 104 Model Aviation lightning rod hands know youre weary reading suggestions bear bit longer whole thing started couple friends Paul Bell Ron Farkas asked Cheap RC channel monitor started idea could add output transformer detector stage RC receiver listen earphones loudspeaker can can locate transformer some junked port able AM radio Unfortunately monitor func tion isnt worth much assessing causes interference plane air cause have both hands full trying get nose up engine stopped buddy might take monitor walk halfway RFI source could quite walk because up sky planes receiver can hearthings miles around Up close monitor can hear own transmitter cant accomplish much wear thing shirt pocket other hand monitor has value sur veying scene before turn transmitter want can plug birddog RC receiver offers interchange able crystals like Airtronics XL Plug crystal channels interested listen Figure 3 cases suspect youre going interested channel intend fly airplane receiver need Electronic Bird-Dog version will costless scanner can buy its versatile wont good dont use Get habit carrying flight box Should elect use suggested Radio Shack radio will find comes tn stout cardboard box makes nice protec tive cover Failing use small camera case final thought compliments Ron Farkas Bird-Dog checks bands 27 35 49 53 72 75 MHz Aint nice Keep letters coming George Myers 70FroehliCh Form Rd Hicks yule NY 11801 Acapulco Diary/Keck Continued page 37 feels results fair representation Hanno Prettner uses bells whistle flying Dave Brown uses very basic setup dont think uses mixture control uses exposed pipe nothing closed Daves real sportsman has problems keeps right smiling dont know what guts doing time outside sure looked collected can proud him job has done team members have certainly come through again flying colors Tony Bonetti new National Champ showed up competition talking together afterwards about just what changes would make aircraft next year both agreed designs flying right now pretty basic way improve work small details lots practice list winners shows wide range good combinations its does practicing gets act together thats going winning Betty Sue Stream helped tabulat ing sunny dispositions competence very reassuring important job banquet something disappointment started late cleared entire group go out beach finally called quits went bed heard later bomb scare rumor fouled up banquet Mexican people have put forward good Homers Specials PART 112 118 117 108 709 119 110 111 107 TWIN STACK EXHAUST-37 & Ko,tz 105 TWIN STACK EXHAUST- Pad,, 120 CHOKE ASSEMBLY- Pen, & 0,ada 121 BRITE SPINNER- Ropa PadS Goad 122 NEOPRENE GAS LINE- p foot 107 RESISTOR SPARK PLUG RCJ-6 113 TO UPDATE EARLY MODEL 37 ENG Nasr dealg, ad beak 37 EXCHANGE Spasaal nechiaed AhaaL 37 BaBbaaiwg fro,t hosg 37 BIG PROPS AVAILABLE Fi,shad eatd balnced sood ALUMINUM HUB WHEELS Finest Wheels Made Feature AUTHENTIC APPEARANCE s EASY & FAST ASSEMBLY Rugged construction aluminum Readily installed removed hub balloon type Equipped Built-in treaded tire retaining device LONG-LASTING SPONGE light weight 0Pat App for