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Receiver/servo/enigine issu - 5/1/2012 8:25 PM   
bmur63


 

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Last Login: 3/22/2013
From: lake forest, CA, USA
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I have my hitec servos conncected to the Airtronics MX sport receiver and a nimh batter supplying the setup.  I turned on radio, then receiver and tested the servo movements.  Everything is in working order.  When I turn my 30cc Homelite engine on with tuner pipe, the servo moves to full throttle and cannot be controlled by the radio.  I have everything mounted in a radio box, except the receiver.  The 8 inch antenna cord is placed in a antenna tube and is away from the engine.  What is the problem?



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RE: Receiver/servo/enigine issu - 5/1/2012 11:33 PM   
TheFridge189


 

Posts: 116
Joined: 10/30/2011
Last Login: 5/2/2013
From: , CA, USA
Status: offline 		Could be vibration. Try wrapping all of your electronics in foam, or something like a paper towel. 

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RE: Receiver/servo/enigine issu - 5/2/2012 12:07 AM   
tapkoote


 

Posts: 409
Joined: 8/19/2010
Last Login: 5/2/2013
From: Seattle, WA, USA
Status: offline 		try stepping back 5 ft or so
some radios don't like the tx and rx too close
try a metal sheild between the motor and airel, there might be interference from the Homelite 

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RE: Receiver/servo/enigine issu - 5/2/2012 12:45 AM   
glennb2006


 

Posts: 1385
Joined: 2/9/2007
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From: Newcastle, UNITED KINGDOM
Status: offline 		Most likely is RF interference caused from the High Tension side of the engine ignition, use a supressed spark plug cap, ensure all the engine ground return paths are clean and good.

Glenn

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RE: Receiver/servo/enigine issu - 5/2/2012 4:26 PM   
bmur63


 

Posts: 2
Joined: 2/1/2012
Last Login: 3/22/2013
From: lake forest, CA, USA
Status: offline 		Thank you.  I will try all of this this weekend.  Thank you

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RE: Receiver/servo/enigine issu - 11/18/2012 9:27 PM   
Fernando


 

Posts: 10
Joined: 2/16/2003
Last Login: 2/4/2013
From: Bogota, COLOMBIA
Status: offline 		Hello everyone. I recently bought an airtronics mx sport radio and was planning to install it into an electric boat. I used a brushless motor and an electrifly 25 a esc but definitly couldn't set up the system. I followed all the instructions but it doesn't work. The position where should be the zero position doesnt work and had to pull back the trigger, to the end rigth side of the trigger where it supposse to be the reverse position and pull it back to full to arm the esc. And when try to acelerate the motor suddenly goes to full speed. Any suggestion? I was thinking if having choose that esc was a correct idea or was a mistake... Anyway, anyone have any good idea or have a suggestion?
Thank you

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RE: Receiver/servo/enigine issu - 11/18/2012 9:43 PM   
martno1fan



Posts: 11153
Joined: 1/20/2005
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From: blackpool, UNITED KINGDOM
Status: offline 		Are you using the correct type of plug ? ie resistor plug.

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RE: Receiver/servo/enigine issu - 11/18/2012 11:34 PM   
Fernando


 

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Joined: 2/16/2003
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From: Bogota, COLOMBIA
Status: offline 		Yes. It only has one possibility to connect it

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RE: Receiver/servo/enigine issu - 11/19/2012 5:11 AM   
Ron Olson



Posts: 17508
Joined: 5/10/2002
Last Login: 5/18/2013
From: Kalamazoo, MI, USA
Status: offline 		No, he's asking if the spark plug is a resistor type. Somewhere in the plug's ID number there should be an "R" that denotes it as a resistor plug. If there isn't that's probably the number one cause of the gremlins in your radio system. There are also other things like metal-to-metal rubbing in the driveline or exhaust, a bad ground wire or connection to the engine that are usually secondary places to look.

Fernando, it sounds like you just have a bad servo. It could have gotten wet and ruined it or a cicuit board that couldn't take the vibration. I've seen Futaba 3003 servo's do that more times than I'd liked to have doing that exact same thing.

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