I loved the simplicity and match to the original, as it seems that it installed exactly like the original motor would have. I ran the rc car for about 20 minutes on slick concrete and then there was a terrible grinding noise that came from the car. The grinding noise ending up being the gears barely catching, because the bearing went out in the motor so the gear on the motor shaft was able to separate from the spur gear. This happened on the 3 motors that I ordered from you guys, and this was the only motor on the market that I could find that matched up to the car, so I ordered another 5 motors with the intent that I will have to need spares if each motor will only last 20 minutes.
