Alrighty. I have an AGM Socom 16, for which I got the following upgrades: SHS High Torque Motor, JBU M14 Cylinder, G&P Steel Spring Guide, Modify S110 (360 ish spring), and an Intellect 9.6v 1600 mah battery.
First issue: The battery was dead on arrival, and I contact Ehobby about it, but I'm still waiting for their reply. The only reason I bring this up is that it meant that I had to use an 8.4v stock Dboys battery.
Second issue: the JBU cylinder was too long by a few millimeters, so I ground it down on the back end (nearest the spring guide). It fits and I don't see any problems because the compression is still near perfect, just letting you all know. It fits perfectly in the gearbox slots.
Third issue: The side notches on my spring guide wouldn't fit into the slots on the gearbox, so while trying to flatten them out they came off altogether. The spring guide still fits fine in the gearbox. I don't worry about it rotating, because the base of the spring guide already rotates to begin with. (look at the little side 'spikes' in this picture http://shop.ehobbyasia.com/media/catalo ... 7_mark.jpg )
Okay, so after I cleaned out all the china grease, I reshimmed the gearbox as best I could with the shims it came with (only six I think). When I have nothing but the gears inside the gearbox and close the shell (both sides), the gears spin freely when I spin them. They don't go for a whole long time, but they get at least a rotation every time I push them. So they really shouldn't be that tight.
First attempt:Then I put in the cylinder, spring, spring guide, tappet plate, etc. When I hook up the motor along with everything else, I pulled the trigger and nothing happened. The tabs on the motor started getting pretty hot and so did the tamiya connectors.
So I unplugged it and took out the motor. At this point the motor was separate, but everything else was assembled. I taped it down, pulled the trigger and the motor spun at full speed. So the wiring was not the issue here.
Second attempt: I took the whole thing apart again, gave the gears a bit more grease and some silicone oil. I also adjusted the shims, and they seemed to spin even better. I put everything back together, except I admit I forgot to put on two tiny springs that pull the trigger apart from the contacts (so the trigger contacts were together the whole time). When I plugged in the battery, the gun was probably trying to shoot full auto but the motor couldn't move.
I removed the motor again, taped it down and tried it again. Now the motor won't do anything, but I think that it might be the battery, since I potentially fried it.
What is causing the lock up? Did I fry the battery, the motor, or both?
Please offer any insight.