Modding a Motor Cage

[Bar1975]

I have an SHS High Torque motor (short type) for my AK47. It fit the AK no problems but i recently placed it in my M14 and it seems that i can't back it out of the gearbox enough for it to mesh with the bevel gear. Even with it backed out all the way it's still making a high pitched grinding sound when shooting.

I can see that the motor itself fills the entire available space in this particular motor cage so i was considering using my dremel to actually remove some of the motor cage material to allow the motor to come out of the gearbox a little more. (probably not talking about much material to remove here)

Has anybody ever had to do this sort of thing to a motor cage? I'm wondering if this type of motor is just too long to work in this particular set up? I placed the SHS next to the stock motor and the SHS definitively has a longer axle.. despite both being a 'short' type motor.

i don't want to ruin my M14 motor cage for this that's for sure..

[lurkingknight]

the correct way is to use a pinion puller, remove the pinion, cut the shaft and reinstall the pinion.

[pestobanana]

Originally Posted by lurkingknight

the correct way is to use a pinion puller, remove the pinion, cut the shaft and reinstall the pinion.

Or simply push the pinion down further...

[Bar1975]

Originally Posted by pestobanana

Or simply push the pinion down further...

i can't imagine that being an easy thing to do? I hadn't considered moving the pinion.. just shave away some material from the motor cage..

i'll look at the pinion though..

[coach]

Stand the motors side by side and compare where they might differ in dimensions.

What's the shaft length difference?

[pestobanana]

Originally Posted by Bar1975

i can't imagine that being an easy thing to do? I hadn't considered moving the pinion.. just shave away some material from the motor cage..

i'll look at the pinion though..

It's not that hard, there normally isn't anything more than a tight fit holding it on. A pinion tool is fairly simple and only costs 30 bucks.

[KenTsui]

Yes, I had to do a lot of filing and working with the Dremel to give the motor enough room on my M14. It's just like you said: the stock "short" motor obviously fits fine but the aftermarket "short" one doesn't fit the same way.