I have just moved my Scorpion 4025-10 / Scorpion Commander 90amp ESC into a new model. Last week everrthing was running fine but today I went through the ESC / Transmitter programme to set the throttle limits and I could not get the motor to run. I get the flashing diode but not the two beeps described with the stick at full throttle, I then move the stick to shut throttle within the prescribed 10 seconds. When I advance the stick I now get a rattle from the motor and the prop moves jerkily. I have tried re-programming everything and tried a different receiver, nothing seems to work. I then moved the ESC to a different model with a Scorpion 4025-16 and it works just fine!!

It seems like a motor problem to me, any ideas guys?

John