It has been a couple hundred miles since I cleaned everything and installed a new belt, I did not clean everything prior to the video. and yes I went from 12 greased rollers (+2 gram covers) to 12 gram greaseless so the lighter weights could be most of my gain.
The Whiterhino cut uses a shim, the JBS cut does not.
The white rhino sheave is cut on the outer radous which allows the weights to sling out further, the JBS does not.
The JBS sheave is cut a little smoother and deeper where the rollers set,
I was not trying to do a real comparison just trying to show my results going from old sheave with greased weights to new sheave with greaseless, I have been wanting to try the greaseless weights for a while and felt it would be best to go with a fresh sheave at the same time. I have a new set of 10gram roller weights I may try in the whiterhino cut sheave later to see how it does. I also plan on doing a little work on the whiterhino cut to see if I can smooth out the roller ramps so it does not have the shift/stall at 30-32. I am also thinking about trying the JBS cut with the shim to see how it does and the whiterhino cut without. I'll get a more detailed write up later on after I get sometime on the new setup.
Originally Posted by Butch450
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.