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Old 09-16-2008, 01:07 AM   #16
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I also don't see pinions with that kit. I don't think the R40 pinions will fit on the MTX-4 clutchbell. So you might have to buy pinions as well.
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Old 09-16-2008, 06:37 PM   #17
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I happen to own a mugen and the clutch Kit for the MTX-4 does not include the pinions. Those are separate, go figure.
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Old 09-16-2008, 06:48 PM   #18
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Do you happen to know if the R40 pinions will work or not. If not whihc do you recomend?

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Old 09-17-2008, 12:03 AM   #19
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well i would first get the light weight two speed for it because it comes with 0.8 gears and the mugen spur gears should work and then from there it depends on the track you run at on the gearing options like on my mtx4 i run 18 22 pinions but cant remember the spurs well hope this helps i thjink you can get a light weight two speed for it on ebay
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Old 09-17-2008, 12:29 AM   #20
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Originally Posted by dvu View Post
Thanks for the advice. If I do get the MTX-4 clutch, which hole would I need to widen (the flywheel hole)?
I'm not sure if the MTX4 clutch fits, I was referring to the MTX3 clutch, and the holes you need to widen are the engine mount holes in the chassis. The MTX3 had 1.0 module gears so the pinions from it should be a direct fit, or you can upgrade to the R40 Hara/2005 lightweight 2 speed and use 0.8 mugen spurs which are tougher than the HPI ones with mugen pinions

All of this is pretty pricey, and then you've got to get the thing to handle, replace the rear camber links (the stock ball joints strip) AND find parts. Personally I think you'd be better off buying a 2nd hand MTX4
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Old 09-17-2008, 11:10 AM   #21
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I think I'll go ahead and go with the MTX4. If I also get the Mugen pinions, do I need to change out the spur gears as well, or will by stock R40 gears work?

Thanks, Duc
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Old 09-18-2008, 11:37 PM   #22
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Just take the time and effort and set up your clutch properly. It really can be made to work properly. It may not have the punch on a high grip track with a modified motor, but it will work fine until you learn to drive and setup your car. Look here to set up your stock clutch.

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