Motor wont go in right!

[Down-side]

I'm not a noob!!

V2 gearbox completely stock on two separate M4's. Pulled them apart for reviews. Everything went together smoothly untill the motor installs.

I drop the motor in and make sure it springs freely up and down. Installed the wires correctly. Then double checked for free movement. No problems yet...

... Then i put the bottom plate on (never touching the adjustment screw). No matter how i install the bottom plate it still seems to have a hard time spinning the gears. It gives me a funny noise like its binding up and the motor and battery get hot. What seems to be happening is when i install the bottom plate it might be pushing the motor toward the front of the gun causing it to bind up a little...

Anyone have input??

[Styrak]

Adjust the motor by using the screw on the bottom of the motor plate. Should solve your problems.

[Down-side]

does absolutly nothing... if i go tighter it binds... if i go loose it does nothing.

[mcguyver]

Wire location. Some guns are very fussy about the position of the wiring in the grip. Bends in the right places, with wiring routed in precise spots can affect the position of the motor. G&P was really bad for that.

Make sure that you remember the motor shim, if your gun has one (small set screw indicates you should have one).

[Down-side]

The motor shim is in place... i've tried moving the wires every direction.. i guess i'll keep trying. Just odd that it happened to two guns

I hate V2's!!

[mcguyver]

A good test is to install everything, and remove the motor height adjusment screw from the endplate entirely. If the motor moves freely and doesn't bind when you push on the shim with a small Allen key or similar, then you have it right. If not, you got it wrong and keep trying.

[Down-side]

i keep trying and trying... no luck

[Drake]

Try loosening the screw inside the buffer tube a bit; it screws into the spring guide and I've seen some mechboxes (like the Progears) that had a bit of play at the rear, so if you overtightened that screw the whole mechbox would get pulled back/down a bit... tiny little bit, but enough to cause this kind of problem.

As for wires, I usually run both on the rear of the grip, along the ridge where one of the screws goes into. I've never really run into problems while doing that.

[Down-side]

thanks drake i'll give that a try

[Down-side]

no go... still binding up

[Nova316]

are your grip screws over tightened? the ones that go from the grip to the gearbox?

[Down-side]

nope

[Drake]

Dunno what you did when you reassembled, so I'll ask just in case: did you check the shimming before putting the spring back in? (i.e., gears were spinning okay/freely?) If the shimming is too tight it'll bind up.

And for the sake of trying to narrow down the source of the problem, maybe try unscrewing the grip plate a bit to let the motor sink down a bit (you'll probably have to pull it out partially and let the grip plate push it back in as you screw that in). Just a few millimeters/16th of an inch at a time. Then at least you'll know if this is being caused by the motor sitting too high, or something else.

[Drake]

Also, I presume the motor isn't turning at all, right?

Check your wiring... make sure the leads are plugged in right (motor, and wires that go from the mechbox to the fuse holder/fuse plate, and to battery.

I did that once after a few beers *oops*

[m102404]

Take the motor out of the grip and hook up the wires to it. Pull the trigger to confirm it is turning. (and it does matter which terminal the +ve and -ve go to, if they're backwards, you'll just blow fuses or heat things up if you're not running a fuse)

If the motor is spinning, put it back in and use your thumb/finger on the motor housing to hold it in place (don't shock yourself) and see if it goes. If it doesn't, you've got a problem inside the mechbox.

Good luck