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"The Best"  Yamaha Wolverine  Machined Sheave

Call in and talk with Todd on custom weight set ups, the following a guidline for general riding style. 

We have 14gr, 16gr and 18gr weights to choose from and two different springs

Must use a Power Commander with the 14gr to keep from hitting the rev limiter

Big tires are rough on clutch parts, using tires larger than 28" is not recommended but if you must, do so at your own risk of clutch parts. Also, the use of snorkels are not recommended, if tires larger than 28" and or snorkels with any size tires use this product at your own risk. 

Who needs a Machined Sheave and what does it do?

This first part is the newest addition to this article.  Who needs a sheave is a guy who is after the lowest of low crawling ability in his wolverine, the guy who wants to handle larger tires better on acceleration and who wants to add just a mile or two to top end.  The top end will be limited by power not clutching.

A stock clutched machine with no slug kit will in fact outrun you for a short distance simple due to how this clutch locks the wet clutch up with the slug kit and the low ratio in sheave.  But you can do stuff a stock clutched vehicle cant dream of doing.  Don't read too much into this, this only happens when you stab it from a dead still and under normal riding conditions you don't do this so as I jokingly say, don't create you and me an issue by doing that.  Clutchig is very specific when you are trying to accomplish something, no such thing as a do all set up, you simply can't have your cake and eat it to with clutching.  If you get bored, read some of our tech articles on RZR clutching, even though the clutches work slightly differently the end result is the same, you have to set it up to do what you want.  Want to do everything then leave it stock, it just does not do anything particularly well.

Before we get into the clutch kit tech info, Hunterworks highly suggests the Wet Clutch Slug Kit in the Wolverine.  The wet clutch seems to be a weak link especially in the vehicles that use large tires such as 28" and above.  Does not mean a guy with stock tires won't benefit just saying the large tire guys really need it.  Click the link above and read the tech article that goes with the slug kit.

The Slippery Washers are highly recommended, click the link for more info on those.

We are going to do the Wolverine differently than we do the Rhino, the Rhino simply needs the machined sheave period and benefits greatly from it and it has been a extremely consistent product for working on 11 years now with sales right at 4000 sold!!

The differences are going to be "clutch kits" for the Wolverine then a machined sheave.

I have an opinion on tires for any vehicle but especially for these, I personally would not go over 28" tires on these vehicles, too much weight, too much load. The Wolverine will handle it a bit better due to bigger engine and lighter weight vehicle but still none the less tires larger than 28" are rough on vehicles.

So take that with a grain of salt if you like but I promise with the huge tires there comes consequences. Also snorkels are bad, not enough air, if you must use at least 3" pipe.

My disclaimer on huge tires and snorkels is that the exception to the rule does not change the rule, for every one guy who does not have trouble there are ten that do.

Mixed use or general trail riding Stock tire to 27" Tires on flat ground

The parts: 18gr weights, greaseless cam plate slides and gold secondary spring.  (slug kit highly recommended)

Benefits: Better acceleration, more belt grip, better low to mid performance, better back shifting for better climbing hills, dunes etc.

Mixed Use or general trail riding 28" to 29" tires

The parts: 16gr weights, greaseless cam plate slides and purple secondary spring (slug kit highly recommended)

Benefits: Better acceleration, more belt grip, better low to mid performance, better back shifting for better climbing hills, dunes etc.

Mud or very slow high load riding with 30" and above tires

The parts: 30" 16gr with purple secondary spring  31" and larger 14gr and purple spring (slug kit highly recommended)

Hill climbing, foot to the floor style of riding on steep hills or banks

The parts: 14gr weights, greaseless cam plate slides and purple secondary spring (slug kit highly recommended)

This combination will have higher rpm while cruising and may lower top speed.

Must use a Power Commander with the 14gr to keep from hitting the rev limiter

"The Best" Wolverine Machined Sheave:

All Sheaves:

We now coat all our sheaves with a new dry lube. Read the tech article on the coating by clicking HERE.

The weight and spring choices still apply exactly with the machined sheave as stock sheave in the above kit.

The advantage of the sheave is the belt rides lower in the primary sheave at rest than stock so take off is improved simply because you are in "lower gear" if you will on the clutch than stock and the machining done on the top adds a couple more mph on top end and lower cruising RPM.  This means those guys with the really big tires can get them moving from rest better and easier.

We add a .5mm shim with our sheave to give you the absolute maximum about of belt travel without hitting the clutch cover that can be had.

We have also removed the seal protrusion off the face of the sheave so that when the belt drops down it will not hit it and hurt the belt.  The seal pocket has been deepened and reinstalled

So the machined sheave with the clutching components and wet clutch slug kit would be the ultimate of "The Best"

The Machined Sheave and slug kit would be great for rock crawlers as well, less slippage of wet clutch and better 0-8 mph performance with the machining.

General Clutching Info:

Any time you increase the load on a vehicle from riding in sand, bigger tires, added weight to vehicle, heavy occupants, higher elevation you lose engine rpm so you need to pick it back up with the right clutch set up and that is normally lighter roller weights and stiffer secondary springs.

If your vehicle is bone stock, stock tires, you are a normal weight, no additional weight, don't ride in sand or high elevation then this kit may or may not benefit you but again the slug kit surely will make your wet clutch last longer.

Also, we like a greaseless clutch set up over the grease.  To keep from having to retype it click this link to the machined sheave tech article and read the part about grease vs greaseless and read the maintenance on it which is at the bottom. We highly suggest you run even our clutch kits greaseless, with no cover on the sheave itself, no little screws that hold it on and no O-ring, leave it open just like we do our machined sheave. It does require you to clean all that grease out, no good way, rags, pressure washing and brake clean to get all the greasy residue out. Also now that we coat them with the dry lube we use, it makes it run very efficient.

Warnings!!!!

The Wolverine are larger and heavier machines than Rhino's were and they use basically the same clutching, that means this clutch runs hotter in stock form than the Rhino does. So expect the following: If you use tires larger than 27" on either, you will go through more belts more often and you might flat spot a roller weight more often.

The snorkels that are 2" really add to this problem.  Riding slow in high range is a no no, use low range when driving under 30 mph for extended periods of time or doing any really slow manuvering.  Using low range pushes more air into the clutch due to higher rpm and less load on the belt.  If you use our machined sheave you can run faster in low range than stock.

No matter the vehicle, rhino, RZR,  or Wolverine big tires and the kind of riding they allow simply is rough on belts and weights.

Feel free to call with any questions

Todd

Hunterworks Inc.
12097 Kelly Lane

Collinsville, MS 39325
Phone: 601-771-0070
Fax 601-771-0073

Email: todd@hunterworks.com

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