Rhino 660 vs grizzy 660 primary sliding clutches - Yamaha Rhino Forum - Rhino Forums.net
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post #1 of 6 (permalink) Unread 01-06-2020, 06:10 AM Thread Starter
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Rhino 660 vs grizzy 660 primary sliding clutches

Are they sliding clutches the same? It appears all the internal parts are the same but the part number for the complete sliding clutch is different. Even the weights seem to be the same. The fixed sheave is also the same part number.
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post #2 of 6 (permalink) Unread Yesterday, 05:20 AM
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Assuming you mean the wet clutch, I thought they were the same and I just looked part numbers up and they are the same
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post #3 of 6 (permalink) Unread Yesterday, 05:59 AM Thread Starter
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I am referring to the primary sliding sheaves that squeeze the belt.
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post #4 of 6 (permalink) Unread Yesterday, 08:05 AM
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Quote:
Originally Posted by jkaiser View Post
I am referring to the primary sliding sheaves that squeeze the belt.
Ah, the movable sheave

yes they are different, we use the grizzly sheave to machine.

Exert from a tech article of ours

A Grizzly sheave is different than a rhino sheave by the fact that it has more roller weight travel than a rhino sheave does and by simply installing a grizzly sheave in a Rhino it will give you about 5 more mph than a stock rhino sheave but no other changes.

So what we are doing is machining a grizzly sheave half as much as we used to machine rhino sheaves which were a third less than most people did their rhino sheaves and we still achieve the same top speeds but no roller weight flop. I am going to use some round numbers for an easy explanation. If a roller weight will roll out .050 more in a Grizzly sheave than a Rhino sheave and you are machining .100 off the Rhino sheave then you only need to machine .050 off the Grizzly sheave to achieve the same affect.

This portion gives you the top end speed you’re looking for without roller weight flop because there is only a very small ledge formed by the machining process all the while getting the same amount of roller weight travel as a machined Rhino sheave.
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post #5 of 6 (permalink) Unread Yesterday, 03:52 PM Thread Starter
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That makes sense. The parts breakdown did not give a specific number for just the sliding sheave, only the complete sheave. It appears all the inner parts are identical, must just be the differences you noted that makes the difference.

I purchased a Chinese aftermarket, I will compare it to my Rhino to see what I got.
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post #6 of 6 (permalink) Unread Today, 04:51 AM
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Quote:
Originally Posted by jkaiser View Post
That makes sense. The parts breakdown did not give a specific number for just the sliding sheave, only the complete sheave. It appears all the inner parts are identical, must just be the differences you noted that makes the difference.

I purchased a Chinese aftermarket, I will compare it to my Rhino to see what I got.
From Yamaha you can and no fan of the Chinese stuff, normally does not work out well.
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