throttle surging
 

The last time I flew my Het f-18 when I went toi full throttle the motor went up and down from 40 to like 37 amps whic you could distinctly hear. Any ideas??? the speed controller is rated at 40. as I backed the throttle off the surging went away .I flew at a lower amperage and all was fine but if possible I'd like to run it at say 40.Any thoughts would be greatly appreciated!!!!! Thanks Chris

RE: throttle surging
 

Chris,
Sorry for the delayed answer. Sounds like your pack is not able to handle the load. The surge is more then likely the esc tripping.

By lowering the throttle, you are not lowering the amp draw, just the amount of time, that the esc and pack are seeing the amp draw.

I'm guessing here, but I'd say your pack is borderline to the amp draw you have, it's able to handle the amp draw in very short bursts, but can't sustain it at wide open throttle.

Hook up a meter to your set up, and you should have an acurate answer real quick, as if the pack is the culprit.;)