Bizarr ???

[Black hawk Down]

when the engine is shut down, All servos work all functions normal. as soon as engine is fired up,
all servos going haywire, intermittent response. shut engine down, everything is functional.
using align 2n1.

Any one else with this situation?

[erniefritz]

regulator or RX , i would turn it on and move all your wires individually to see if it's a break in one of the wires , then you could tap on the Rx or 2 in 1 to see if either reproduce the intermitent glitch...

[TerranAce007]

Sounds like a vibration problem. If the engine is running smooth and everything is balanced, it might be a sign that something is wrong with the electronics setup...

[drdot]

fwiw...
Check the alignment of the starter shaft and motor...If out, a lot of rf can be generated by the metal to metal friction...

John.

[avatar71]

could be the isolator mounts in the receiver...

[fsusmithc2]

Check that your pitch/aileron servo wires aren't hitting the starter shaft. The shaft does spin mighty fast while the engine is running unless the starter shaft is inserted. Mine come close to touching it but I've zip-tied them so they don't hit.

[Black hawk Down]

Thanks for the Input. I am learning exponentially.
The Receiver was the problem in this case. changed it out and all is working fine.