blindmank13 wrote:It would spin at times then wouldn't. But wouldn't keep firing.
That's the bug I was talking about. Motor has 3 coils and 3 contact-pads for the brushes. All 3 coils are actually wound from the same piece of wire, and the contact-pads have a sticking piece of copper that's bent over the wire where the coil ends and a new coil starts. The wire has the brown enamel coating so it can be wound tight, and they count on the pressure acted upon the folded copper piece to break the coating and make good electric contact with the contact-pad. And I think it only barely scratches the enamel coat, then, over time, oxides build up and break the electric contact on one pad. So the motor only works if you either hand-spin it or you're lucky ho have it stop with brushes on the two "working" contact-pads.
Same happens to systema motors, so you're not entirely safe switching to one. No ideea about the JG clones, haven't had the opportunity to cross paths with one, sadly.
To solve the problem forever, you'd need just a soldering iron, besides the skill to dismantle the thing
![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
I've used a Dremel with a metal wire brush to clean the enamel off the ends of the wires towards the contact-pads, but one can scratch them with a cutter blade as well. Same treatment for the folded piece of copper, then a glob of solder was added between the two, with liberal amounts of flux paste to insure good grip. It took me a couple of hours, because it was the first time I've dismantled this kind of motor, and with a replacement two weeks and a hundred dollars away, had to be extremely careful, but the next one I fix will be a 15 min. job
![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
All credit goes to Tackleberry, the Systema guru, but keep in mind that all his experience applies to the CTW, since it's an exact clone. All the bugs have been cloned in.