Rddevo

It’s the stock 1J spring and a 7.4v 15c nurpol

You can hear the motor start and the gears start turning and then it stops dead. And it’s a high speed.

Hi all I upgraded the motor in my sa-eo3 and since it has started misfiring. It only happens in semi auto and the motor randomly begins spinning and then stops midway through before the piston moves fully. The motor works perfectly before it interacts with the gears ,the battery is brand new and fully charged. Does anyone have any ideas what could be causing it?