After one crash with my new e-flite 4100kv motor installed it stopped working. All it would do is just chatter back and forth. I called e-flite and they said they can't warranty crash damage. I took the motor apart and found the very large magnet inside chipped a big edge off. $50 on one crash. i'm very disappointed. My rim fire outboard has taken many crashes even on pavement with no problems. What to do?

Inrunners are bad for that,a bad enough crash(sometimes it dosn't take a hard one,just the correct direction of force) will shock the magnet causing it to crack/splinter.the only thing you can do is get a new mag/shaft assy.BUT before you order it inspect the windings very closely, use a good glass magnifing lens, to ensure that they didn't get cut and/or scratched as this may lead to a shorted winding burning out not only the motor but the esc and possibly the battery as well from over current.

after looking at both of my brushless motors, i'm wondering what is the best way someone could go about pulling an end cap off. i've never done it myself. are they usually threaded on?

the eflight (which I think is a himax) have brittle magnets, I've done the same thing to two motors. Try this motor, it's about as cheap as fixing your e-flight and works just as well but seems more durable.

http://www.bphobbies.com/view.asp?id...49&pid=U834468

I've crashed HARD several times and the motor is going strong.