Installed a new motor, jam happened after.

[SPK]

Hello,

I just replaced the motor in V3 Gearbox,
The spring in it is a SP120, had been working on it for at least 2 years, it also used to have a TM EG1000 and a stock Cyma cm028 motor.

Worked fine until I change the motor, I even cleaned the whole gearbox, then it worked, for a few shots, until I reassemble the whole gun, and to see it just do a lil "zap" and while I can actually feel the inner working, like they're trying to pull the spring.

Other infos :`
Battery used
Intellect 9.6v mini 1400mAh
G&G 9.6v mini 1600mAh
Sanyo 9.6v mini 1600mAh.
Every parts in the gearbox looks fine and aren't stock, been the same since 2008.

Note that I'm not a newbie at upgrading/fixing rifle, I've been doing it for a little bit more than two years, and often, but yeah, this is an issue I wonder what may be causing.

[Styrak]

Motor height, not enough battery power, or a shimming issue.
You also didn't say what motor you upgraded to?

[SPK]

The shimming should be good, it worked great using the previous motors,

And it's a Guarder Durable Motor.

I suspected Battery power at first, the motor height, I haven't adjusted it , might be that too...

[venture]

Ensure that the motor is sitting properly in the bracket. Then check motor height, sounds too tight.

[SPK]

I'll check it right away, I'll get back to you guys if it works.

Edit: Didn't change anything.

Note: The battery & wiring gets a tad hot. Motor works out of the gearbox.

[FACE]

Originally Posted by SPK

Hello,

Every parts in the gearbox looks fine and aren't stock, been the same since 2008.

Note that I'm not a newbie at upgrading/fixing rifle, I've been doing it for a little bit more than two years, and often, but yeah, this is an issue I wonder what may be causing.

Seems to me that if you've been fixing guns for a little more than 2 years and you haven't tried checking the motor height before you posted your problem here, you need to go back to basics.

Realizing that the gun was jamming after you put a new motor in would DIRECTLY point to the motor height adjustment FIRST. Than you can work your way backwards and go from there. I like to call it, deductive reasoning, common sense and point to point elimination troubleshooting. I've been doing it in my line of work for over 12 years now and it's worked for me so far.

Cheers,
FACE

[SPK]

Thanks for the input, I appreciate the kind and polite help.

But as to it, I did redo the gearbox, looked each and every parts, the wiring, and all. Also took a close look at everything in the motor cage.

The reason I did not do the height adjustment is quite simple, the first time, the jam was caused by one guy I was giving basic training, did not pay attention to how he settled it in. The second time, when I did it entirely, it worked extremely fine, which is why I figured out it was working great.

After I did all that it worked great, until I reassemble the whole replica into one part.

[HKGhost]

When you install a new motor, you need to re-shim the bevel gear to that motor. Even if you think that are both exactly the same dimension, they could be off by .5mm. So check that and then adjust the motor height.

[SPK]

Ohh that's one great advice, I'll try that once I have time this weekend.

(I'm hell of a lot rusty on when it comes to motor changing I've gotta say, I'm more used to fix things in G&G's AR & GBB mags at the shop, please forgive my mistakes)

[audi_bhoy]

Just curious, does it still jams with previous/other motors? If so, then the problem is most likely in the gearbox, otherwise it would be a faulty motor...

[SPK]

I'll try with the older motors too, (Haven't had time much lately)

I'll let you know once I try to see if its either the motor, or the gearbox.

[DoctorBadVibez]

I know a lot of folks would say this is a "duh" questions but have you checked the polarity of the motor connections?

If its shimmed right and you can manually cycle your piston (I use a long hex head with a coated head, and cycle the piston manually through the air nozzle by pushing the hex head through to see if its seated right in the rails, if not, there's your first sign)

So to wrap up, if piston cycles well, shimming is perfect (MAKE SURE that your bevel gear shimming is correct), then check your motor connections to see if they are reversed.

When it works, shoot something quickly to gain a level of satisfaction.