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Discussion Starter · #1 ·
Hey Everyone,
Is there anyone out there that knows of a good solid clutch set up for the 500 motor, non power valve, for lower engagement around 4-4500 instead of 5-5200 and comes on aggressive, meaning pulls hard all the way up to 82-8500? My wife's sled (99 P/S 500 EFI 136"x 1.5") is all bone stock and she likes the feel of my 600 the way it pulls hard on the bottom end.
Mine isn't stock... it has stock primary with the exception of ground down 54g weights for a softer engagement, engages at 4-4200 rpm but pulls hard all the way up to 8200. The secondary has a 57/51 helix and a black/red spring. It backshifts great and when riding in some tricky tight trails you can let it go down to 3800- 4000 and the primary is still engaged and doesn't have that annoying jolt she doesn't like (nothing extreme) like when the clutch engages on her's at 5-5200 in the same trail situation.
I had mine done 2 years ago by a out of town friend who has now moved and I don't have his # anymore! bang your head
Would there be anything I could find at the Arctic Cat dealer or another dealer that might give her what she wants and I could install this weekend or would I have to order something from D&D or some other aftermarket company? I dunno
 

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keys to getting the sled to pull harder down low is more weight in the primary and a multi angle helix with a start angle higher than the crappy straight 51 or 53 that comes stock. 57-51 is a good helix, if you like how your sled shifts with it, put one in you're wife's sled and get a set of polaris wts (a gram or two lighter than what you have in your sled). if your cat dealer doesn't have that helix they should have a 57-50 or 55-53. either will be a big improvement over the stock helix.
if you can't get polaris wts look for a cat wt with similar profile.
the 500 and 600's react very similar to clutch changes. the 600's have a few more hp so they can pull more weight.
a stiffer secondary spring (like cat red/white) will greatly improve backshift and give the sled a little more snap. it will also help keep peak rpms up, which will drop when you go with heavier weights.
 

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:site: Listen to that man.
 

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Edsled is right on.

Some dealers don't know the angle on the helix, so just ask for a Thunder Cat helix, it is a a 57-50. Use the RED/WHITE secondary spring and you'll be pretty close on the setup. I like to use the Cat 500-55 weights and grind them to get the right rpm. Good luck and let us know how it turns out.
 

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Discussion Starter · #5 ·
Thanks Ed and thanks for the input guys! I really appreciate it. I ordered the Helix (57/50) A.K.A Thundercat helix, the spring and the weights from the dealer today and they should all be here next Tuesday/Wednesday. I had to go on Brown's Leisure World and look through the years of sleds to find the helix I needed and as it turns out (Like Enginerd said) I found it under the 2001 TCat parts fiche.
I will try everything next week... can't wait! Maybe then the wife will stay on her sled... then some more 70+mph drags with her again. I only start pulling away from her on top end, although that was before I had mine done. She's really got a good 500 there. Plus the fact shes wild! :devil_angry: After all, it only has 900 miles on it! still lots of good use yet!
Will keep you posted guys,
Thanks again!
 
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