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Old 11-18-2008, 03:00 PM   #1
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Default jrxs and brushless

ok i want to put brushless into my jrxs and heard i have to change my gearing to run a 17.5 i am currently running a 128t spur and a 28t pinion i heard that there is a spur gear adapter of some kind if im right on this does anybody know the company?? and also if anybody runs this in their tc do you know what gearing i should be running if using a 17.5?? thanks in advanced cody
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Old 11-18-2008, 03:19 PM   #2
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I believe it is a prs gear adaptor
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Old 11-18-2008, 03:48 PM   #3
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Default prs

2/3 run PRS at our club. Mine has a plastic adapter that works but is quite leaves pinion at the very end of the shaft for good mesh.

Awaiting my PRs. Service to LHs is slow and direct has extortionate shipping.
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Old 11-19-2008, 08:21 AM   #4
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Quote:
Originally Posted by steve eaves View Post
I believe it is a prs gear adaptor
yep found it thanks just need to know gearing now
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Old 11-19-2008, 08:39 AM   #5
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I'm running 112/53 using the PRS adapter in my JRXS fir rubber tire with a 17.5. You'll probably want 112, 114 and 108 spurs and pinions from 46-53 to cover all your bases.

If you're running foam, adjust accordingly for rollout. In rubber I[m on 62mm diameter tires.
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Old 11-19-2008, 08:42 AM   #6
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im running 58's on foam
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Old 11-19-2008, 12:10 PM   #7
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My rollout on 62mm rubber tires is 50.34mm with 112/53 gearing, on 58mm foams yo'd want a 108 spur with 54 or 55 pinion to get the same rollout. Ort a 106 spur with a 53 or 54 pinion.
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