ignition problem
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i've got a sachs 3.4 with CH ignition. the problem i'm having is when i start the engine all my servos go crazy. I made about 20 flights before problem started. any suggestions.
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crashhappy
Sounds like a loose spark plug boot/cap.
Also look for loose metal to metal contact like a loose muffler, loose connector on the ignition/ignition battery/ both the receiver and ignition switches.
It definitely sounds like RF interference so very carefully check everything that has to do with the ignition
Sounds like a loose spark plug boot/cap.
Also look for loose metal to metal contact like a loose muffler, loose connector on the ignition/ignition battery/ both the receiver and ignition switches.
It definitely sounds like RF interference so very carefully check everything that has to do with the ignition
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i checked every thing i could think of. even opened ignition box found a broken wire (repaired it) could the box be the problem. im new to electronic ignition & its an old system
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I had this exact same problem several years ago. All was fine for a long time, then all at once there was lots of servo twitch and zero range with the motor running. I chased it till I was nearly blue in the face. Finally found a radio switch that was worn and the vibration from the running engine caused it to have intemittant contact. Replaced the switch and the problems went away. I just plugged the battery direct to the reciever to find the problem.
It could also be an inteference problem as stated above, but check for a loose or worn switch or connector first. Epecially if you have no range with your antenna up.
It could also be an inteference problem as stated above, but check for a loose or worn switch or connector first. Epecially if you have no range with your antenna up.
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i've done the switch bypass (first thing) i messed with it today a little. not good i think. i hear spark jump in the box. this cant be a good thing. looks like off to CH come tuesday
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You may want to get a spare sensor. Many times if you lose ground or something, it will damage the sensor.
ORIGINAL: crashhappy
i've done the switch bypass (first thing) i messed with it today a little. not good i think. i hear spark jump in the box. this cant be a good thing. looks like off to CH come tuesday
i've done the switch bypass (first thing) i messed with it today a little. not good i think. i hear spark jump in the box. this cant be a good thing. looks like off to CH come tuesday