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hope to hear from all with experience in clutching mods, including input from our members from the 2 well known companies that do these setups.

I thank you all for your information!

I wasn't to do these mods as I desire a lower gearing for crawling. and better engine breaking? a higher top speed would be nice but the improved low speed crawling ability and of course reliability is #1. was told both ways on the high speed limit. some say higher speed in addition to better low speed. and some say top speed is reduced. like to know the facts.

I was told that the belt life would be cut in half. true?

benefits of doing this besides lower gearing? downfalls?

please set me straight!
thanks guys!
 

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here's a yamaha corporate video of how the ultramatic system works:


i installed a WV clutch in mine and have never looked back. i don't need to go 60mph for the type of riding i do, so it wasn't a concern either way.
my rhino is a real stump puller, and it's smooth all the way through the rev range and back shifting when coming out of a hot corner is perfect.
belt wear? none. if anything there is less wear because it's not working as hard. the revs drop when i'm cruising so it's not over-revving the engine.
 

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hope to hear from all with experience in clutching mods, including input from our members from the 2 well known companies that do these setups.

I thank you all for your information!

I wasn't to do these mods as I desire a lower gearing for crawling. and better engine breaking? a higher top speed would be nice but the improved low speed crawling ability and of course reliability is #1. was told both ways on the high speed limit. some say higher speed in addition to better low speed. and some say top speed is reduced. like to know the facts.

I was told that the belt life would be cut in half. true?

benefits of doing this besides lower gearing? downfalls?

please set me straight!
thanks guys!

Engine braking can't be changed, done on the one way bearing in wet clutch

Very little top end to be had machining the clutch

Some more bottom end, a change in weights and secondary spring will all make a difference.

I am having trouble getting off the phone to finish up the sheave for the Wolverine.

I know what it is going to be, just need to do some quantifying

Todd
 

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Engine braking can't be changed, done on the one way bearing in wet clutch

Very little top end to be had machining the clutch

Some more bottom end, a change in weights and secondary spring will all make a difference.

I am having trouble getting off the phone to finish up the sheave for the Wolverine.

I know what it is going to be, just need to do some quantifying

Todd
This isn't entirely accurate. More secondary spring pressure will cause more felt engine braking, as it will backshift faster when letting off the throttle.
 

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I would be mostly concerned about belt life. If it shortens the life of the belt then I would pass on this mod.
It doesn't shorten the life of the belt per say, but as your belt wears it will go too far down in the clutch.

I think 2000 miles out of a belt is acceptable. Actually we recommend changing one if you are going in the clutch with a 1000 miles on it.
 

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Changing a belt at 1,000 or even 2,000 miles is unacceptable for me! I plan on getting at least 5,000 miles from the belt.
Agreed! I got 4000 miles or so out of my Grizzlys belt when I had it and it was still fine, just thought it would be nice to have a spare so I replaced it. If I was happy with 1000 miles out of a belt then I shoulda just bought a Polaris!
 

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2,000 miles seems a bit short to me, but I wonder how long that would take to reach that millage. I only put 590 on my grizzly in a year and 2 months..

I guess if I can get a year out of it I could live with it.I also wonder if a shim would be a cheaper better option if we want long belt life.
 

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Can a belt be changed on the trail with the Yamaha system? My new Kawasaki 800 would require an impact wrench and pulling both clutches to get the belt changed due to the 800 sheaves being bigger in diameter than the 750.
 

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Todd, is there a solution to the Wolverine limiters yet?
 

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A salesman told me the wolvie had a 50 mph limiter like my 14 teryx.
 

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A salesman told me the wolvie had a 50 mph limiter like my 14 teryx.
It tops out at 53. I'd say that's due to the programming rather than the clutch because when you get there, the motor starts to cut out.
 

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A salesman told me the wolvie had a 50 mph limiter like my 14 teryx.
MIne runs 54 stock and is hard to get it to bang off limiter.

I have a power commander on mine that is not available yet and our sheave and it runs 60 down a slight down grade and about 57 on a flat

It needs more power, not sure I would spend the money just for three more mph


Todd
 
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