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Old 10-28-2011, 11:51 PM
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Originally Posted by mjealey View Post
1. What gearing would be a good place to start? I will be running a Tekin RS Pro and a 13.5 Redline to start.
Originally Posted by Jason Snyder View Post
87/22
87/22 is WAY WAY under geared for a 13.5. For a 13.5, you are going to need to be around 87/29-30, which will not fit in the buggy. The largest pinion you can run with the factory spur is 25, which is under geared for even my 9.5 turn. Your best bet would be to carefully ream out a 78 tooth AE spur, and run a 28 pinion.
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Old 10-29-2011, 12:15 AM
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Originally Posted by Cpt.America View Post
87/22 is WAY WAY under geared for a 13.5. For a 13.5, you are going to need to be around 87/29-30, which will not fit in the buggy. The largest pinion you can run with the factory spur is 25, which is under geared for even my 9.5 turn. Your best bet would be to carefully ream out a 78 tooth AE spur, and run a 28 pinion.
x2, that's undergeared for an 8.5, let alone a 13.5.
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Old 10-29-2011, 05:42 AM
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I ran boosted 13.5 last weekend and ran 79/28, just reamed out a B4 spur until the RW spurs are available.
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Old 10-29-2011, 03:23 PM
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Guys when installing the diff in the gear case,which side does the plastic nut go on? I run RM 3 gear setup. It looks in the book that the adjustment side is on the pinion side. Is this correct? Thanks guys.
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Old 10-29-2011, 04:24 PM
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Originally Posted by Bman's 3XNT View Post
Guys when installing the diff in the gear case,which side does the plastic nut go on? I run RM 3 gear setup. It looks in the book that the adjustment side is on the pinion side. Is this correct? Thanks guys.
you're correct, the adjustment side is on the right with the RM3 setup
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Old 10-29-2011, 05:06 PM
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Originally Posted by Matt Howard View Post
you're correct, the adjustment side is on the right with the RM3 setup
Really? Won't that make the screw unscrew itself when you apply power?
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Old 10-29-2011, 05:15 PM
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hi guys im putting together my 210 with rm4 now what side does the motor go on. i already put it together and its seems like the motor goes to the right side of the car is this right ,, please help

thanks ,,,brian
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Old 10-29-2011, 05:26 PM
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Originally Posted by x7tristan View Post
Really? Won't that make the screw unscrew itself when you apply power?
look at the pics in the manual, the adjustment screw head goes on the right side
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Old 10-29-2011, 05:27 PM
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Originally Posted by BRIAN77 View Post
hi guys im putting together my 210 with rm4 now what side does the motor go on. i already put it together and its seems like the motor goes to the right side of the car is this right ,, please help

thanks ,,,brian
RM4 the motor will be oppposite from what your used to, the solder tabs will be on the right side
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Old 10-29-2011, 05:44 PM
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Originally Posted by Matt Howard View Post
look at the pics in the manual, the adjustment screw head goes on the right side
The manual is wrong, I followed the manual and my diff unscrewed itself when you held one wheel. All other classic RM3 have the NUT on the spur side
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Old 10-29-2011, 05:58 PM
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Originally Posted by x7tristan View Post
The manual is wrong, I followed the manual and my diff unscrewed itself when you held one wheel. All other classic RM3 have the NUT on the spur side
two weeks racing and my diff is fine, built per the manual.
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Old 10-29-2011, 06:24 PM
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thank you matt .. how do u like the rm4 over the rm3.

thanks again ,,,BRIAN
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Old 10-29-2011, 06:27 PM
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Originally Posted by BRIAN77 View Post
thank you matt .. how do u like the rm4 over the rm3.

thanks again ,,,BRIAN
I've only run RM3 so far. I run on a pretty high traction indoor track so I don't need the extra rear traction from the RM4 setup.
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Old 10-29-2011, 06:42 PM
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I was playing with an out of box Durango yesterday, man, this thing handles pretty good, and pulling out the diff takes all of 5 seconds! They need a buggy!
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Old 10-29-2011, 08:29 PM
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Originally Posted by Matt Howard View Post
two weeks racing and my diff is fine, built per the manual.
+1
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