Hi All,

I recently experienced a problem with my Neu motor which resulted in the ESC almost catching fire in my model during flight. I landed without power and realised how lucky I was when I removed the canopy. Prior to this flight the model has be performing faultlessly without any sign of an impending problem.

I removed the power unit from the model and established the Brenner V3 contra drive was in perfect working order. The ESC was obviously toasted (big time) and the NEU motor seemed a little difficult to turn but would spin. I pulled the motor apart and checked the windings,stator, bearings and nothing obvious stood out. Check to make sure the windings had not shorted to the case and also checked that the windings had not gone open circuit.

At this stage I was not sure if the ESC failed or my NEU was in fault. I had an old ESC laying about so I decided (Stupidly) to see if the motor would run as it seemed OK from what I could tell. Anyway I connected power ESC armed up and as soon as I advanced the throttle the motor chugged for a couple of seconds and the ESC toasted itself.

Obviously the motor has a big issue and it sits in the bottom of my trash can. Anyone experienced this before - Considering the Hacker C54 now - once bitten twice shy.