The other day one of the motors died out on my most used desk toys. It provides a nice 6-7 minute break when I remember that it has charged; it needed to be fixed ASAP(it keeps me sane through all the work). This one was very quick and easy. Anyone with a steady hand with a bit of soldering skill could do it. When I say “quick” I mean literally less than a minute to replace a motor on the Estes Proto X Nano.