Need help with overheating motors

[canabubba]

I've got 2 M4's with the same issue - the motors are overheating.

I'm running 11.1-volt lipos, with mosfets.

Gears are high-torque. Springs are somewhere in the 110-120 range.

Nothing remarkable at all about he guns.

The problem I'm having is heat. After a hundred shots or so, I can feel the grip getting warm, and soon after, they're hot, and on a couple of occasions, the motors have seized up on me.

Granted, these motors have NOT been hi-end motors. I think the ones I've lost are a stock G&G, one was a neo-dymium (can't recall the brand off hand), one was a basic Element hi-torque.

Everything is lubed and shimmed properly. Could it just be that the lipos are just too strong?

They're Turnigy's from Hobby-king.

Would a higher-end motor handle the power better?

Any thoughts would be appreciated

thanks

[kaiu]

If you're using an AB mosfet, might be your mosfet?

[wind_comm]

when you say shimmed properly: did you start from the bevel or the spur?
mosfet: proper hardwired kind or sh*tty plug and play fakefet? AB or not?

[canabubba]

I usually shim from the bevel gear to get the best alignment with the motor.

They are proper hardwired mosfets without active braking.

The reason I'm suspecting the batteries (ie the voltage) is that I'm getting the same problem on two guns, both running 11.1's.

Granted, the internals of the guns are pretty much identical, too.

[Scarecrow]

What kind of mosfet and fps?

I had high heat with my new black talon spectre at first with a systema and m700 at 400 fps, 12.8v or 11.1. I bought a Tienly from airsoftparts, godsend of all motors, Zero heat now. Motor makes a ton of difference, tailor it to your set up.

-Renegade)
gotta log out when using bosses computer...

[canabubba]

which tienly did you get, the ultra torque or the ultra performance?

I'm not pulling a heavy spring - one gun is sub-400, the other is around 420.

[lurkingknight]

you shouldn't need a super high end motor to pull a 110 on standard gears.

Pull the motor and feel/inspect the pinion. If you're shimmed improperly at the bevel it will show excessive/uneven wear on the pinion.

If you run bearings, they can hide bad shim jobs by still allowing the gears to turn.

[canabubba]

agreed - everything spins perfectly freely, no uneven wear.

I'm thinking I just had crap motors that couldn't handle the 11.1 volts.......

[Styrak]

Maybe you should scale back on the battery...

[Renegade)]

Originally Posted by canabubba

which tienly did you get, the ultra torque or the ultra performance?

I'm not pulling a heavy spring - one gun is sub-400, the other is around 420.

I got the 35000 Ultra Torque. I figured with my Pro Wins spring swap the 45000 might be a bit much when I switch to a lower FPS spring, this seems to be the happy medium with zero problem when I go full FPS set up.

Originally Posted by Styrak

Maybe you should scale back on the battery...

Never... I actually dremeled out my crane stock to custom fit these 12.8v Lifepos I got from a friend in a deal... More power, quicker trigger response and bb to target time!
Im sure your talking to the OP, but I wanted to chime in, with the right set up, 11.1 or higher is fine. With the wrong set up, get ready to replace alot of gears, motors, pistons, ect...

[Sloth]

My stock M4 motor heated up a lot from 11.1 volts, you need to buy a decent motor simple as that. What mosfet are you using?

[canabubba]

mosfet source escapes me at the moment......very reputable....lots of guys here use him....Canadian.....sorry - too late on a Friday...brain shutting down.....


but thanks for the tips guys

[Sloth]

Originally Posted by canabubba

mosfet source escapes me at the moment......very reputable....lots of guys here use him....Canadian..

Is it one of Terry fritz units?

Buy yourself a Lonex Torque motor.
you typically need to upgrade internals when you start using 11 volts

[ThunderCactus]

The eagle force in my 249 runs off 11.1v, and it doesn't heat up until I'm really laying shit down. It's a ferrite magnet motor though, fairly low torque.
Good motors heat up less, better bearings, better balance. It also makes a difference if you have a torque or speed motor.
More windings in speedy motor have a thinner gauge cause more resistance and therefore more heat.

Holy balls is motor theory ever complicated, but bottom line is I highly doubt any of us are using an optimized motor lol
You need a different motor winding to run at an optimal speed under different loads. Could be your just need a higher torque motor to handle the load

[Xhausted]

11.1v is simply hard on your motor. My G&P MOE Magpul M4 gets warm sometimes, but not enough to overheat. Watch out for wires that are getting pinched!