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Join Date: Feb 2011
Location: Celina TN
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You left out a lot of info. I will assume you mean you went with 12 gram grease-less rollers and grease-less sliders. Did you happen to do anything to your old sheave prior to testing against the new one? After 2000 miles the old sheave would be smoothed out on the face so did you scuff it back up so it would at least grab comparable to the new one? Also did you use the new rollers and sliders on both sheaves for the test? The original rollers might be a little worn on the covers so once again, not the same. What is the cost of both setups? What is exactly machined on both, was it the sheave face or the roller ramps and hub? Did you use a shim at all?
There are quite a few different companies producing machined sheaves for the rhinos and grizzlies and each one of them does their machining a little different to produce almost the same results. A few of these companies do not machine the face of the sheave but inside the roller ramps and hub. I have read on a few different Rhino Forums that guys with the rhino 450s have gained on average 4 - 6mph top end with a few that are machined like this, and with them designed this way you add a shim for all your low end torque gain, instead of machining the face to allow the belt to travel lower. The video from what I could see looked like the difference was 1 mph both in top speed and at shift points. That could just be because you old sheave is...well old lol.
|450, changed, rhino, sheave|
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