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ujiro · July 2nd, 2007, 15:45

Hey everybody, I recently upgraded my TM M4 RIS with a PDI 150% spring, new bushings and shims, and a ball-bearinged spring guide. After I got it in, it wouldn't run, so I tried a more powerful battery. I used an Intellect 9.6V 4200 mah battery, and while it did finally run, after about half a magazine, it made an incredibly awful, loud whining sound. Upon opening up the mechbox, I found that my spur gear had lost an entire tooth, and the 2 surrounding teeth were ground down to very little left.

What I want to know is, would you recommend upgrading the entire gear set to like a torque up set? Or a different type of set perhaps. Or should I just replace the spur gear with a better made one. Thanks.

July 2nd, 2007, 15:45	#1
ujiro Trader rating Join Date: Aug 2006 Location: Burlington, ON	Gear Problem / Decision Hey everybody, I recently upgraded my TM M4 RIS with a PDI 150% spring, new bushings and shims, and a ball-bearinged spring guide. After I got it in, it wouldn't run, so I tried a more powerful battery. I used an Intellect 9.6V 4200 mah battery, and while it did finally run, after about half a magazine, it made an incredibly awful, loud whining sound. Upon opening up the mechbox, I found that my spur gear had lost an entire tooth, and the 2 surrounding teeth were ground down to very little left. What I want to know is, would you recommend upgrading the entire gear set to like a torque up set? Or a different type of set perhaps. Or should I just replace the spur gear with a better made one. Thanks.