PUSIROD eepe m rs U IVAN MUNNINGHOFF Its obvious cant keep pushrods connected ervo end control-surface end theres going nasty mishap nearly ways secure pushrod ways put finish model Some methods work very well others less satisfactory Let start off disclaimer An article such may conceivably offend manufacturers pushrod keepers accessories Please keep mind following comments personal opinion therefore necessarily represent last word use suitability particular productthey simply reflect experience said lets cover some ways secure end pushrod Its important note its possible pushrod threaded device both ends rotate under just right vibration conditions slowly unwind fittings Admittedly its remote possibility Ive seen happen conclusion use threaded fittings both ends same pushrod unless some positive means prevent pushrod rotation small jam nut better nothing isnt necessarily foolproof Overall best pushrod end old-favorite Z bend cant unwind unless wire breaks no conceivable failure mode just works great bends can created small pair sturdy pliers commercially available devices designed make such bends Just keep vertical right-angle section short possible Perhaps next-best method 900 bend wire small wheel collar secure Most wire used pushrods 1A6 music wire sturdy enough installations important thing make absolutely certain collar tight servo arm short enough bring wire through servo side arm will capture wire between arm servo should collar fall off wire stays place 60 Model Aviation Sq Spruce Pushrod Servo Arm Keep Vertical Leg Short As PossibleControl Horn 1111111111 Pushrod Wire Inserted Hole Pushrod Wrap String Secure Glue 1/16 Music Wire Servo Arm Wheel CollaControl Horn V 1116 Music Wire standard homemade pushrod design above can strong effective commercial unit Its also easy adapt different applications Ideas shown reflect successful applications used author 4 1/16 Plywood ~Pushrod 1/ie Wire Pushrod September 1996 61 Z Bend Threaded Connector 1/161/4 Piece 2-56 threadof Fuel Line Straight Out Through Drilled Hole-Good nd-Not Good Bulkhead next method involves threaded couplers Most work very well few precautions take however Always use some sort retaining device keep legs fitting springing open under load vibration Some come little clips seem work well dont can use -inch piece fuel line slipped over end coupler Make sure fuel line doesnt interfere control horn Dont spring legs open too far leading possible problems its really cold plastic becomes brittle making failure link likely threaded links movable connections matter watch wear either hole enlargement pin wear use concentric-tubing-type pushrods have some good news Once 2-56 rod threaded approximately 1/2-inch end inside tubing nuclear blast wont pull out really secure mechanical crimping link secure before start soldering Another item Ill never use sort retainer merely snaps place over end piece wire Most either metal plastic will fall off slightest provocation Lets quickly address problem pushrod flexing very long unsupported pushrod can bend under mechanical load under U load effective length pushrod will change install remove linksyou can permanently bend metal Theres also possibility big-time problem using threaded links effort save money some modelers buy bicycle spokes use pushrod wire Although wire isnt hard springy spokes look like standard 2-56 threaded rods usually come links two different kinds rods can easily mixed up theyre thrown together same pile links seem thread onto spokes fairly easily Unfortunately thread some obscure metric version does properly engage threads links link will come off its subjected heavy loads use spokes metric threaded wire standard 2-56 links plastic versions threaded links also work well have limitations legs spread connecting pin very vulnerable damage Use gently temperature very high plastic can soften Now touchy part recommend never use type pushrod connection involves soldering modelers just arent good enough soldering make reliable joint Besides us use small soldering irons intended minor electrical projects Theyre good making electrical connections mechanical bonding Any shop instructor will tell electrical work solder supposed make good electrical connection wire should have good mechanical connection its own same applies pushrods Ive witnessed numerous crashes directly attributable soldered pushrods insist using links use some form 62 Model Aviation unsupported pushrods can bend under mechanical G load simple wire support around pushrod will help eliminate flexing wire support installed /4lqm spruce pushrod method works well middle-of-the-fuselage support small square thin plywood also makes good pushrod support method works well pushrods pass close bulkheads A-inch piece fuel line slipped over end threaded clevis will keep springing open under load flexes control may lost pushrod made -inch-square spruce suggested above two reasonable ways support middle prevent flexing method choose will determined pushrods location respect bulkhead another suitable mounting point Use small square thin plywood support pushrod its near bulkhead use bent piece wire its middle fuselage Check out sketches photos modelers use plans call wide Z-bend pushrods exits aft end fuselage extremely bad idea pair bends causes pushrod loads misaligned centerline pushrod can lead unwanted flexing Either two guides mentioned above can help reduce bending tendency However better solution use Z-bend Drill long hole through side fuselage install straight pushrod last watch-out youre folks uses brand radio keep equipment separated brand dont problems can arise example output arms Futaba Airtronics units interchangeable splines slightly different top small black screws secure arms servos arent same either same probably true other combinations radio brands wrong arm mounted wrong servo arm can slip resulting loss control Find brand like stick exclusively opinions based 30 years experience evaluate own hope havent offended too manufacturers IFICATIONS Engine requirements Wing Span Wing Area Fuselage Length Fuselage Width Weight Range Wing Loading Range Radio Functions 20 to 36 50-53 435 sq 30-33 3/4 3 3-1/2 lbs 154 to 175 oz sq ft 4 Channel Northeast Aerodynamics rolling out new line-up eight new Profile Warbirds flyers want carve tight holes sky other adversaries dare show face offering eight popular World War II combat aircraft F6F Hellcat P-40 Warhawk Japanese Zero Hawker Hurricane Focke-Wulf 190 Messerschmitt BF-109 Russian Mig-3 course great P-Si Mustang Profile Warbirds engineered same Northeast Aerodynamics tradition make kits best money can buy Ask favorite hobby shop call us direct sirens screaming bogies coming 10 oclock. -Cs 150 Robinson Road Hudson NH 03051 881-5899 Mastercard Visa accepted September 1996 63 LIGHTING SYSTEMS THE ORIGINALS. Still Best RAM 01 Adj Flash Nay Lights 9V NEW 94 span w/ wing light conn $2995 RAM 02Strobe Light 9V adjustable flash rate1995 RAM 03Landing Li9hts 4BV receiver controlled3995 RAM 04Mars Rotating Beacon 9V adjustable rate1995 RAM 06Sky Lights 18 Li9ht Set 72-9V best way fly night2495 RAM 14Big Airplane Navigation Lights 9V 168 span non flashing2495 RAM 15Non Flash Nay Lights 9V NEW 94 span w/ wing light conn1495 RAM 16Econo Landing Lights 9V servo controlled brightest1995 RAM 23Real Strobe Li9ht 3V brightest2995 RAM 65 T6 Lg Scale Lighting 72-9V Comb #s 0414 & 16 100 span 5995 0 SEE YOUR DEALER S SEND STAMPED ENVELOPE FOR RAM iNFO unavailabie locally send check money order full credit card info cost item pius $400 l$50O foreigni immediate shipment Inciude fuli address u PS Sorry no COD ~am 229A E Rollins Rd d Lake Beach IL 60073 Introducing finest mode/s accessories Very high speed slope thermal sailplane OPUS-V Electric version OPUS-SE clocked 200 km/h Glass carbon fiber construction made Czech Republic Wing span 72 tuselage length 42 F5B use eg Astro-25 -40 10 cells ri Intelligent microprocessor-operated chargers flight pack plus transmitter and/or receiver batteries Manufactured Europes leading supplier chargers speed controllers Automatically adapts 4 36 cell flight packs charge current up 90 Amps Multiple discharge/charge cycles will recondition tired battery packs Digital display battery capacity voltage current charge time etc l PAF Powder Micro glass balloons German-engineered precision work wonders filler Simply lay bead PAF-Powder between two materials joined apply few drops thin CA glue ensuing bond literally strong glass Use wood plastic cloth metal steel piano wire nylon what have YAW-2 YAW-E Piezo solid-state gyros size servo precision gyros weigh less 2 oz YAW-E 07 oz best credentials Size weight price under $250 IZJiCt 2323-C Tamara Lane San Marcos CA 92069 L.Jfax 619 744-1773tel 619 752-9330 SCRAMBLE. $4995 Introductory Offer
Edition: Model Aviation - 1996/09
Page Numbers: 60, 61, 62, 63
Edition: Model Aviation - 1996/09
Page Numbers: 60, 61, 62, 63
PUSIROD eepe m rs U IVAN MUNNINGHOFF Its obvious cant keep pushrods connected ervo end control-surface end theres going nasty mishap nearly ways secure pushrod ways put finish model Some methods work very well others less satisfactory Let start off disclaimer An article such may conceivably offend manufacturers pushrod keepers accessories Please keep mind following comments personal opinion therefore necessarily represent last word use suitability particular productthey simply reflect experience said lets cover some ways secure end pushrod Its important note its possible pushrod threaded device both ends rotate under just right vibration conditions slowly unwind fittings Admittedly its remote possibility Ive seen happen conclusion use threaded fittings both ends same pushrod unless some positive means prevent pushrod rotation small jam nut better nothing isnt necessarily foolproof Overall best pushrod end old-favorite Z bend cant unwind unless wire breaks no conceivable failure mode just works great bends can created small pair sturdy pliers commercially available devices designed make such bends Just keep vertical right-angle section short possible Perhaps next-best method 900 bend wire small wheel collar secure Most wire used pushrods 1A6 music wire sturdy enough installations important thing make absolutely certain collar tight servo arm short enough bring wire through servo side arm will capture wire between arm servo should collar fall off wire stays place 60 Model Aviation Sq Spruce Pushrod Servo Arm Keep Vertical Leg Short As PossibleControl Horn 1111111111 Pushrod Wire Inserted Hole Pushrod Wrap String Secure Glue 1/16 Music Wire Servo Arm Wheel CollaControl Horn V 1116 Music Wire standard homemade pushrod design above can strong effective commercial unit Its also easy adapt different applications Ideas shown reflect successful applications used author 4 1/16 Plywood ~Pushrod 1/ie Wire Pushrod September 1996 61 Z Bend Threaded Connector 1/161/4 Piece 2-56 threadof Fuel Line Straight Out Through Drilled Hole-Good nd-Not Good Bulkhead next method involves threaded couplers Most work very well few precautions take however Always use some sort retaining device keep legs fitting springing open under load vibration Some come little clips seem work well dont can use -inch piece fuel line slipped over end coupler Make sure fuel line doesnt interfere control horn Dont spring legs open too far leading possible problems its really cold plastic becomes brittle making failure link likely threaded links movable connections matter watch wear either hole enlargement pin wear use concentric-tubing-type pushrods have some good news Once 2-56 rod threaded approximately 1/2-inch end inside tubing nuclear blast wont pull out really secure mechanical crimping link secure before start soldering Another item Ill never use sort retainer merely snaps place over end piece wire Most either metal plastic will fall off slightest provocation Lets quickly address problem pushrod flexing very long unsupported pushrod can bend under mechanical load under U load effective length pushrod will change install remove linksyou can permanently bend metal Theres also possibility big-time problem using threaded links effort save money some modelers buy bicycle spokes use pushrod wire Although wire isnt hard springy spokes look like standard 2-56 threaded rods usually come links two different kinds rods can easily mixed up theyre thrown together same pile links seem thread onto spokes fairly easily Unfortunately thread some obscure metric version does properly engage threads links link will come off its subjected heavy loads use spokes metric threaded wire standard 2-56 links plastic versions threaded links also work well have limitations legs spread connecting pin very vulnerable damage Use gently temperature very high plastic can soften Now touchy part recommend never use type pushrod connection involves soldering modelers just arent good enough soldering make reliable joint Besides us use small soldering irons intended minor electrical projects Theyre good making electrical connections mechanical bonding Any shop instructor will tell electrical work solder supposed make good electrical connection wire should have good mechanical connection its own same applies pushrods Ive witnessed numerous crashes directly attributable soldered pushrods insist using links use some form 62 Model Aviation unsupported pushrods can bend under mechanical G load simple wire support around pushrod will help eliminate flexing wire support installed /4lqm spruce pushrod method works well middle-of-the-fuselage support small square thin plywood also makes good pushrod support method works well pushrods pass close bulkheads A-inch piece fuel line slipped over end threaded clevis will keep springing open under load flexes control may lost pushrod made -inch-square spruce suggested above two reasonable ways support middle prevent flexing method choose will determined pushrods location respect bulkhead another suitable mounting point Use small square thin plywood support pushrod its near bulkhead use bent piece wire its middle fuselage Check out sketches photos modelers use plans call wide Z-bend pushrods exits aft end fuselage extremely bad idea pair bends causes pushrod loads misaligned centerline pushrod can lead unwanted flexing Either two guides mentioned above can help reduce bending tendency However better solution use Z-bend Drill long hole through side fuselage install straight pushrod last watch-out youre folks uses brand radio keep equipment separated brand dont problems can arise example output arms Futaba Airtronics units interchangeable splines slightly different top small black screws secure arms servos arent same either same probably true other combinations radio brands wrong arm mounted wrong servo arm can slip resulting loss control Find brand like stick exclusively opinions based 30 years experience evaluate own hope havent offended too manufacturers IFICATIONS Engine requirements Wing Span Wing Area Fuselage Length Fuselage Width Weight Range Wing Loading Range Radio Functions 20 to 36 50-53 435 sq 30-33 3/4 3 3-1/2 lbs 154 to 175 oz sq ft 4 Channel Northeast Aerodynamics rolling out new line-up eight new Profile Warbirds flyers want carve tight holes sky other adversaries dare show face offering eight popular World War II combat aircraft F6F Hellcat P-40 Warhawk Japanese Zero Hawker Hurricane Focke-Wulf 190 Messerschmitt BF-109 Russian Mig-3 course great P-Si Mustang Profile Warbirds engineered same Northeast Aerodynamics tradition make kits best money can buy Ask favorite hobby shop call us direct sirens screaming bogies coming 10 oclock. -Cs 150 Robinson Road Hudson NH 03051 881-5899 Mastercard Visa accepted September 1996 63 LIGHTING SYSTEMS THE ORIGINALS. Still Best RAM 01 Adj Flash Nay Lights 9V NEW 94 span w/ wing light conn $2995 RAM 02Strobe Light 9V adjustable flash rate1995 RAM 03Landing Li9hts 4BV receiver controlled3995 RAM 04Mars Rotating Beacon 9V adjustable rate1995 RAM 06Sky Lights 18 Li9ht Set 72-9V best way fly night2495 RAM 14Big Airplane Navigation Lights 9V 168 span non flashing2495 RAM 15Non Flash Nay Lights 9V NEW 94 span w/ wing light conn1495 RAM 16Econo Landing Lights 9V servo controlled brightest1995 RAM 23Real Strobe Li9ht 3V brightest2995 RAM 65 T6 Lg Scale Lighting 72-9V Comb #s 0414 & 16 100 span 5995 0 SEE YOUR DEALER S SEND STAMPED ENVELOPE FOR RAM iNFO unavailabie locally send check money order full credit card info cost item pius $400 l$50O foreigni immediate shipment Inciude fuli address u PS Sorry no COD ~am 229A E Rollins Rd d Lake Beach IL 60073 Introducing finest mode/s accessories Very high speed slope thermal sailplane OPUS-V Electric version OPUS-SE clocked 200 km/h Glass carbon fiber construction made Czech Republic Wing span 72 tuselage length 42 F5B use eg Astro-25 -40 10 cells ri Intelligent microprocessor-operated chargers flight pack plus transmitter and/or receiver batteries Manufactured Europes leading supplier chargers speed controllers Automatically adapts 4 36 cell flight packs charge current up 90 Amps Multiple discharge/charge cycles will recondition tired battery packs Digital display battery capacity voltage current charge time etc l PAF Powder Micro glass balloons German-engineered precision work wonders filler Simply lay bead PAF-Powder between two materials joined apply few drops thin CA glue ensuing bond literally strong glass Use wood plastic cloth metal steel piano wire nylon what have YAW-2 YAW-E Piezo solid-state gyros size servo precision gyros weigh less 2 oz YAW-E 07 oz best credentials Size weight price under $250 IZJiCt 2323-C Tamara Lane San Marcos CA 92069 L.Jfax 619 744-1773tel 619 752-9330 SCRAMBLE. $4995 Introductory Offer
Edition: Model Aviation - 1996/09
Page Numbers: 60, 61, 62, 63
PUSIROD eepe m rs U IVAN MUNNINGHOFF Its obvious cant keep pushrods connected ervo end control-surface end theres going nasty mishap nearly ways secure pushrod ways put finish model Some methods work very well others less satisfactory Let start off disclaimer An article such may conceivably offend manufacturers pushrod keepers accessories Please keep mind following comments personal opinion therefore necessarily represent last word use suitability particular productthey simply reflect experience said lets cover some ways secure end pushrod Its important note its possible pushrod threaded device both ends rotate under just right vibration conditions slowly unwind fittings Admittedly its remote possibility Ive seen happen conclusion use threaded fittings both ends same pushrod unless some positive means prevent pushrod rotation small jam nut better nothing isnt necessarily foolproof Overall best pushrod end old-favorite Z bend cant unwind unless wire breaks no conceivable failure mode just works great bends can created small pair sturdy pliers commercially available devices designed make such bends Just keep vertical right-angle section short possible Perhaps next-best method 900 bend wire small wheel collar secure Most wire used pushrods 1A6 music wire sturdy enough installations important thing make absolutely certain collar tight servo arm short enough bring wire through servo side arm will capture wire between arm servo should collar fall off wire stays place 60 Model Aviation Sq Spruce Pushrod Servo Arm Keep Vertical Leg Short As PossibleControl Horn 1111111111 Pushrod Wire Inserted Hole Pushrod Wrap String Secure Glue 1/16 Music Wire Servo Arm Wheel CollaControl Horn V 1116 Music Wire standard homemade pushrod design above can strong effective commercial unit Its also easy adapt different applications Ideas shown reflect successful applications used author 4 1/16 Plywood ~Pushrod 1/ie Wire Pushrod September 1996 61 Z Bend Threaded Connector 1/161/4 Piece 2-56 threadof Fuel Line Straight Out Through Drilled Hole-Good nd-Not Good Bulkhead next method involves threaded couplers Most work very well few precautions take however Always use some sort retaining device keep legs fitting springing open under load vibration Some come little clips seem work well dont can use -inch piece fuel line slipped over end coupler Make sure fuel line doesnt interfere control horn Dont spring legs open too far leading possible problems its really cold plastic becomes brittle making failure link likely threaded links movable connections matter watch wear either hole enlargement pin wear use concentric-tubing-type pushrods have some good news Once 2-56 rod threaded approximately 1/2-inch end inside tubing nuclear blast wont pull out really secure mechanical crimping link secure before start soldering Another item Ill never use sort retainer merely snaps place over end piece wire Most either metal plastic will fall off slightest provocation Lets quickly address problem pushrod flexing very long unsupported pushrod can bend under mechanical load under U load effective length pushrod will change install remove linksyou can permanently bend metal Theres also possibility big-time problem using threaded links effort save money some modelers buy bicycle spokes use pushrod wire Although wire isnt hard springy spokes look like standard 2-56 threaded rods usually come links two different kinds rods can easily mixed up theyre thrown together same pile links seem thread onto spokes fairly easily Unfortunately thread some obscure metric version does properly engage threads links link will come off its subjected heavy loads use spokes metric threaded wire standard 2-56 links plastic versions threaded links also work well have limitations legs spread connecting pin very vulnerable damage Use gently temperature very high plastic can soften Now touchy part recommend never use type pushrod connection involves soldering modelers just arent good enough soldering make reliable joint Besides us use small soldering irons intended minor electrical projects Theyre good making electrical connections mechanical bonding Any shop instructor will tell electrical work solder supposed make good electrical connection wire should have good mechanical connection its own same applies pushrods Ive witnessed numerous crashes directly attributable soldered pushrods insist using links use some form 62 Model Aviation unsupported pushrods can bend under mechanical G load simple wire support around pushrod will help eliminate flexing wire support installed /4lqm spruce pushrod method works well middle-of-the-fuselage support small square thin plywood also makes good pushrod support method works well pushrods pass close bulkheads A-inch piece fuel line slipped over end threaded clevis will keep springing open under load flexes control may lost pushrod made -inch-square spruce suggested above two reasonable ways support middle prevent flexing method choose will determined pushrods location respect bulkhead another suitable mounting point Use small square thin plywood support pushrod its near bulkhead use bent piece wire its middle fuselage Check out sketches photos modelers use plans call wide Z-bend pushrods exits aft end fuselage extremely bad idea pair bends causes pushrod loads misaligned centerline pushrod can lead unwanted flexing Either two guides mentioned above can help reduce bending tendency However better solution use Z-bend Drill long hole through side fuselage install straight pushrod last watch-out youre folks uses brand radio keep equipment separated brand dont problems can arise example output arms Futaba Airtronics units interchangeable splines slightly different top small black screws secure arms servos arent same either same probably true other combinations radio brands wrong arm mounted wrong servo arm can slip resulting loss control Find brand like stick exclusively opinions based 30 years experience evaluate own hope havent offended too manufacturers IFICATIONS Engine requirements Wing Span Wing Area Fuselage Length Fuselage Width Weight Range Wing Loading Range Radio Functions 20 to 36 50-53 435 sq 30-33 3/4 3 3-1/2 lbs 154 to 175 oz sq ft 4 Channel Northeast Aerodynamics rolling out new line-up eight new Profile Warbirds flyers want carve tight holes sky other adversaries dare show face offering eight popular World War II combat aircraft F6F Hellcat P-40 Warhawk Japanese Zero Hawker Hurricane Focke-Wulf 190 Messerschmitt BF-109 Russian Mig-3 course great P-Si Mustang Profile Warbirds engineered same Northeast Aerodynamics tradition make kits best money can buy Ask favorite hobby shop call us direct sirens screaming bogies coming 10 oclock. -Cs 150 Robinson Road Hudson NH 03051 881-5899 Mastercard Visa accepted September 1996 63 LIGHTING SYSTEMS THE ORIGINALS. Still Best RAM 01 Adj Flash Nay Lights 9V NEW 94 span w/ wing light conn $2995 RAM 02Strobe Light 9V adjustable flash rate1995 RAM 03Landing Li9hts 4BV receiver controlled3995 RAM 04Mars Rotating Beacon 9V adjustable rate1995 RAM 06Sky Lights 18 Li9ht Set 72-9V best way fly night2495 RAM 14Big Airplane Navigation Lights 9V 168 span non flashing2495 RAM 15Non Flash Nay Lights 9V NEW 94 span w/ wing light conn1495 RAM 16Econo Landing Lights 9V servo controlled brightest1995 RAM 23Real Strobe Li9ht 3V brightest2995 RAM 65 T6 Lg Scale Lighting 72-9V Comb #s 0414 & 16 100 span 5995 0 SEE YOUR DEALER S SEND STAMPED ENVELOPE FOR RAM iNFO unavailabie locally send check money order full credit card info cost item pius $400 l$50O foreigni immediate shipment Inciude fuli address u PS Sorry no COD ~am 229A E Rollins Rd d Lake Beach IL 60073 Introducing finest mode/s accessories Very high speed slope thermal sailplane OPUS-V Electric version OPUS-SE clocked 200 km/h Glass carbon fiber construction made Czech Republic Wing span 72 tuselage length 42 F5B use eg Astro-25 -40 10 cells ri Intelligent microprocessor-operated chargers flight pack plus transmitter and/or receiver batteries Manufactured Europes leading supplier chargers speed controllers Automatically adapts 4 36 cell flight packs charge current up 90 Amps Multiple discharge/charge cycles will recondition tired battery packs Digital display battery capacity voltage current charge time etc l PAF Powder Micro glass balloons German-engineered precision work wonders filler Simply lay bead PAF-Powder between two materials joined apply few drops thin CA glue ensuing bond literally strong glass Use wood plastic cloth metal steel piano wire nylon what have YAW-2 YAW-E Piezo solid-state gyros size servo precision gyros weigh less 2 oz YAW-E 07 oz best credentials Size weight price under $250 IZJiCt 2323-C Tamara Lane San Marcos CA 92069 L.Jfax 619 744-1773tel 619 752-9330 SCRAMBLE. $4995 Introductory Offer
Edition: Model Aviation - 1996/09
Page Numbers: 60, 61, 62, 63
PUSIROD eepe m rs U IVAN MUNNINGHOFF Its obvious cant keep pushrods connected ervo end control-surface end theres going nasty mishap nearly ways secure pushrod ways put finish model Some methods work very well others less satisfactory Let start off disclaimer An article such may conceivably offend manufacturers pushrod keepers accessories Please keep mind following comments personal opinion therefore necessarily represent last word use suitability particular productthey simply reflect experience said lets cover some ways secure end pushrod Its important note its possible pushrod threaded device both ends rotate under just right vibration conditions slowly unwind fittings Admittedly its remote possibility Ive seen happen conclusion use threaded fittings both ends same pushrod unless some positive means prevent pushrod rotation small jam nut better nothing isnt necessarily foolproof Overall best pushrod end old-favorite Z bend cant unwind unless wire breaks no conceivable failure mode just works great bends can created small pair sturdy pliers commercially available devices designed make such bends Just keep vertical right-angle section short possible Perhaps next-best method 900 bend wire small wheel collar secure Most wire used pushrods 1A6 music wire sturdy enough installations important thing make absolutely certain collar tight servo arm short enough bring wire through servo side arm will capture wire between arm servo should collar fall off wire stays place 60 Model Aviation Sq Spruce Pushrod Servo Arm Keep Vertical Leg Short As PossibleControl Horn 1111111111 Pushrod Wire Inserted Hole Pushrod Wrap String Secure Glue 1/16 Music Wire Servo Arm Wheel CollaControl Horn V 1116 Music Wire standard homemade pushrod design above can strong effective commercial unit Its also easy adapt different applications Ideas shown reflect successful applications used author 4 1/16 Plywood ~Pushrod 1/ie Wire Pushrod September 1996 61 Z Bend Threaded Connector 1/161/4 Piece 2-56 threadof Fuel Line Straight Out Through Drilled Hole-Good nd-Not Good Bulkhead next method involves threaded couplers Most work very well few precautions take however Always use some sort retaining device keep legs fitting springing open under load vibration Some come little clips seem work well dont can use -inch piece fuel line slipped over end coupler Make sure fuel line doesnt interfere control horn Dont spring legs open too far leading possible problems its really cold plastic becomes brittle making failure link likely threaded links movable connections matter watch wear either hole enlargement pin wear use concentric-tubing-type pushrods have some good news Once 2-56 rod threaded approximately 1/2-inch end inside tubing nuclear blast wont pull out really secure mechanical crimping link secure before start soldering Another item Ill never use sort retainer merely snaps place over end piece wire Most either metal plastic will fall off slightest provocation Lets quickly address problem pushrod flexing very long unsupported pushrod can bend under mechanical load under U load effective length pushrod will change install remove linksyou can permanently bend metal Theres also possibility big-time problem using threaded links effort save money some modelers buy bicycle spokes use pushrod wire Although wire isnt hard springy spokes look like standard 2-56 threaded rods usually come links two different kinds rods can easily mixed up theyre thrown together same pile links seem thread onto spokes fairly easily Unfortunately thread some obscure metric version does properly engage threads links link will come off its subjected heavy loads use spokes metric threaded wire standard 2-56 links plastic versions threaded links also work well have limitations legs spread connecting pin very vulnerable damage Use gently temperature very high plastic can soften Now touchy part recommend never use type pushrod connection involves soldering modelers just arent good enough soldering make reliable joint Besides us use small soldering irons intended minor electrical projects Theyre good making electrical connections mechanical bonding Any shop instructor will tell electrical work solder supposed make good electrical connection wire should have good mechanical connection its own same applies pushrods Ive witnessed numerous crashes directly attributable soldered pushrods insist using links use some form 62 Model Aviation unsupported pushrods can bend under mechanical G load simple wire support around pushrod will help eliminate flexing wire support installed /4lqm spruce pushrod method works well middle-of-the-fuselage support small square thin plywood also makes good pushrod support method works well pushrods pass close bulkheads A-inch piece fuel line slipped over end threaded clevis will keep springing open under load flexes control may lost pushrod made -inch-square spruce suggested above two reasonable ways support middle prevent flexing method choose will determined pushrods location respect bulkhead another suitable mounting point Use small square thin plywood support pushrod its near bulkhead use bent piece wire its middle fuselage Check out sketches photos modelers use plans call wide Z-bend pushrods exits aft end fuselage extremely bad idea pair bends causes pushrod loads misaligned centerline pushrod can lead unwanted flexing Either two guides mentioned above can help reduce bending tendency However better solution use Z-bend Drill long hole through side fuselage install straight pushrod last watch-out youre folks uses brand radio keep equipment separated brand dont problems can arise example output arms Futaba Airtronics units interchangeable splines slightly different top small black screws secure arms servos arent same either same probably true other combinations radio brands wrong arm mounted wrong servo arm can slip resulting loss control Find brand like stick exclusively opinions based 30 years experience evaluate own hope havent offended too manufacturers IFICATIONS Engine requirements Wing Span Wing Area Fuselage Length Fuselage Width Weight Range Wing Loading Range Radio Functions 20 to 36 50-53 435 sq 30-33 3/4 3 3-1/2 lbs 154 to 175 oz sq ft 4 Channel Northeast Aerodynamics rolling out new line-up eight new Profile Warbirds flyers want carve tight holes sky other adversaries dare show face offering eight popular World War II combat aircraft F6F Hellcat P-40 Warhawk Japanese Zero Hawker Hurricane Focke-Wulf 190 Messerschmitt BF-109 Russian Mig-3 course great P-Si Mustang Profile Warbirds engineered same Northeast Aerodynamics tradition make kits best money can buy Ask favorite hobby shop call us direct sirens screaming bogies coming 10 oclock. -Cs 150 Robinson Road Hudson NH 03051 881-5899 Mastercard Visa accepted September 1996 63 LIGHTING SYSTEMS THE ORIGINALS. Still Best RAM 01 Adj Flash Nay Lights 9V NEW 94 span w/ wing light conn $2995 RAM 02Strobe Light 9V adjustable flash rate1995 RAM 03Landing Li9hts 4BV receiver controlled3995 RAM 04Mars Rotating Beacon 9V adjustable rate1995 RAM 06Sky Lights 18 Li9ht Set 72-9V best way fly night2495 RAM 14Big Airplane Navigation Lights 9V 168 span non flashing2495 RAM 15Non Flash Nay Lights 9V NEW 94 span w/ wing light conn1495 RAM 16Econo Landing Lights 9V servo controlled brightest1995 RAM 23Real Strobe Li9ht 3V brightest2995 RAM 65 T6 Lg Scale Lighting 72-9V Comb #s 0414 & 16 100 span 5995 0 SEE YOUR DEALER S SEND STAMPED ENVELOPE FOR RAM iNFO unavailabie locally send check money order full credit card info cost item pius $400 l$50O foreigni immediate shipment Inciude fuli address u PS Sorry no COD ~am 229A E Rollins Rd d Lake Beach IL 60073 Introducing finest mode/s accessories Very high speed slope thermal sailplane OPUS-V Electric version OPUS-SE clocked 200 km/h Glass carbon fiber construction made Czech Republic Wing span 72 tuselage length 42 F5B use eg Astro-25 -40 10 cells ri Intelligent microprocessor-operated chargers flight pack plus transmitter and/or receiver batteries Manufactured Europes leading supplier chargers speed controllers Automatically adapts 4 36 cell flight packs charge current up 90 Amps Multiple discharge/charge cycles will recondition tired battery packs Digital display battery capacity voltage current charge time etc l PAF Powder Micro glass balloons German-engineered precision work wonders filler Simply lay bead PAF-Powder between two materials joined apply few drops thin CA glue ensuing bond literally strong glass Use wood plastic cloth metal steel piano wire nylon what have YAW-2 YAW-E Piezo solid-state gyros size servo precision gyros weigh less 2 oz YAW-E 07 oz best credentials Size weight price under $250 IZJiCt 2323-C Tamara Lane San Marcos CA 92069 L.Jfax 619 744-1773tel 619 752-9330 SCRAMBLE. $4995 Introductory Offer
