I got my girlfriend, who's torn apart and fixed gearboxes before, and her dad who's done it and was also a mechanic for twenty years. We tore it up and replaced the parts and reassembled the weapon. It didn't fire, we could hear the motor trying to work but the gears wont spin. We spent half of christmas eve trying to fix it and all day on christmas trying to trouble shoot it.
Late christmas night we got about three cycles out of it and the piston, the whole piston, locked to the rear with the spring under full tension. We tore it out again and started over, we've been continuing this process ever since. We've assembled everything exactly as it's supposed to be, used several vidoes for reference, shimmed and reshimmed it to exact CA guide standards and still nothing. We've used three different size batteries and still nothing. We've used a stock CA high speed motor, and a EG max hyper 1000 high torque motor and... still nothing. On our last try on a different gearbox the piston locked in the half cock position.
When we pull the trigger the motor attemtpts to turn but the gears dont spin. We've manually turned the gears with a scewdriver and they turn just fine but when we put the motor in the grip and put power to it, it doesn't do a damn thing. We've been at this for three days now, tearing it apart and meticulously rebuilding it.
Does anyone have any ideas or suggestions other than buy a new gun?
EDIT: I know that this picture does not show a fully assembled gear ox, I'm just using the picture to give you an idea of what I'm working with.
