Originally Posted by
TSummerfield
Any ideas as to how I can diagnose this problem?
You already have. You fried the motor. I believe you. Now, you believe you, and move on to next steps. I see where Ancheer sells the motor separately for $219. It will be at least $50 to get it laced into your existing wheel. You risk doing this again if you don't get a bigger motor or learn how to keep the 250w from overheating.