3034 mosfets work in any standard build, so unless it's faulty I can't see that being the problem. Have you tried a different battery?

 

Yes; a 11.1 30C 3000 Mah was tried, a 11.1 1200mah 15c buffer tube lipo, and even at one point a 9.6NiMH was tried; all of them get hot within 20 shots. i was reading somewhere about how certain mosfets don't necessarily fail, but the printed boards do; could it be that when i re-soldered the connections i damaged the board, and therefore its getting hot? Its not mechanical resistance so it has to be electrical resistance somewhere; and the wires further down towards the gearbox and motor are not hot at all; the battery is very hot, the mosfet is very hot, and the wires between them get warm, but not hot. I've also tried multiple blade fuses, thinking it might be resistance in the fuse itself, but it changed nothing, even when changing the amperage of the fuse.

 

Do you have a multimeter? Something's definitely wrong in the mosfet area of the wiring... quite likely the mosfet itself. Multimeter is a good way to check... just see how much resistance is in the mosfet.

 

If the mosfet isn't functioning you'd still get trigger contact arcing right? You could check for that.

 

No. If it's fried, the gun'll be firing in full-auto without him pulling the trigger[i.e., not trigger arcing]. This is something else... not sure if it's a short yet.

 

Sounds like a short to me...

 

Check the amps to see how well the gun cycles

Where did you get the 3034 - fleabay = possible/likely fake
only buy 3034's from digikey mouser farnell RS or reputable places
most stuff on fleabay are fakes which will blow on stock 10 amps

Like them Big Dragon ACM mosfet boards with the blade fuse included
they blow very easily coz the mosfet is fake crap

Did you use a tvs diode or schottky diode across the motor like ICS recommend
at least something or one of them to reduce spikes would be a wise consideration too

check ya wiring, check your amps or you fried the 3034 by soldering too much too long
(of it was a fake)

 

Tvs diode With a mosfet? I was on the impression this combination is a no no. either one or the other.

maybe this is the reason why its causing an issue. there shouldn't be a diode on your motor

 

ICS suggest a diode on their motors, just saying what they themselves say
personally if they thought it was a good idea why not install one in the first place

TVS diode on mosfet, well most mosfets will have some protection
the 3034 has one built in, but from a high amp build/motor the spikes can be way ott

I know people have ignored the TVS on 3034
my own gut feeling is perhaps TVS or ICS across motor to lower spikes

think high amps, cooked 3034 or likely a fake one from fleabay