I posted awhile back about a roller clutch set up for my sportsman. Since then I have been in contact with Hot Seat, Jack Schultz, and Rick Ritter via email. So now comes the big question. Has anyone done the mod, whether it was roller or not? I get lost when the chat turns to helixes and driven sub-assemblies. Just wanting to find the best set up for my quad, as in 2700 miles of quadding, the clutch seems a little on the worn out side. Been reading up on the benefits of the CVT transmission, and I know for sure now that this is truly one of the most tunable and at the same time simple transmission and power delivery system available. And also, ever tried to shift gears with size 14 air force boots on?

 

Will see dealer today about simply rebuilding the stock clutch. Maybe will be the simplest and cheapest clutch mod yet, as it seems no one has approached this end of the performance curve.

 

No experience with fiddling with a roller clutch setup.
Have fiddled a little with the stock one, though. If you are getting yours rebuilt, pay another $18 and upgrade to the white primary spring. It will give you more zip off the bottom with no loss of top end speed. Some have gone to the green spring, but in my opinion, it is almost too severe for technical riding, especially on the 4 stroke machines.

 

My dealer recommends leaving the spring alone and only change the weights. I weigh more than the average bear, so I want good lowend torque when i ride but not so much to scare the wife (110 lbs) when she drives. What is correct for a '01 SP500HO, with an elevation from 2000-8000?

weetoots

 

So what weights are we talking about changing to? The weights I put on from AAEN I assume were a little lighter than stock. And is the white springs softer than the green one, which is what I have on now.

 

The way it worked best for me (and everyone is different) is to have the weights for your altitude with the stock setup. The dealer had this done when I got the machine. Then I 'upgraded' to the white spring, which allows the engine to rev up just a bit more before the clutch grabs or upshifts, but still allows for the same top speed.
Now here is the kicker. I have the white Polaris spring. Normally, the green is more severe, or higher performing. However, Aaen springs are color coded differently than Polaris (from what I am told).
The white spring I am referring to has a wire diameter of .177 inch & a free length of 2.8 to 3.05 inches. The Green is .177 diam. wire also, but longer, @ 2.93 to 3.18 inch. If you have the specs for the spring from Aaen, you should be able to compare & see what you have.

The weights may be a better way to do this 'right', but the spring is something you can change yourself in 15-20 minutes & costs under $20, so you can afford to experiment to see which one fits your riding style.

 

I like my EPI kit!

I don't get around these parts much, so email if ???