Weights for Clutching

powdersrider11 · Dec 16, 2008

I was just wondering what everyone's opinion was on the weight for your primary clutch. I recently just bought weights for both clutches so I can ride out west. I have a 2002 800 mountain cat EFI LE 144. Does the 55 gram weight that the sent me, that goes into the primary clutch, really make that much of a difference when riding in the powder out west? They told me that with the 55 gram in the snowmobile won't upshift as fast when driving in the deep powder. I was just wondering if it's worth the 50 bucks I paid for it.

winter4ever · Dec 16, 2008

Changing weights is one of the most important and cheap things you can change for seriouse rpm gains for going up in elevation. ideally you wont notice a change from going from a low elevation to a high one, but thats unlikely cuz your engine makes a lot less power.

mil81 · Dec 16, 2008

winter4ever said:
Changing weights is one of the most important and cheap things you can change for seriouse rpm gains for going up in elevation. ideally you wont notice a change from going from a low elevation to a high one, but thats unlikely cuz your engine makes a lot less power.

Yup, what he said. The loss of horsepower, as well as the extra drag on the machine require more weights in your primary. I don't know much about the Cat clutching, but the doo's require a lot more clutching to get the machine up to it's max potential in the hills.

Rixster · Dec 16, 2008

I am assuming the weights you have now are heavier then 55? IF so then you are on the right track. Normally you have to loose weight when you gain elevation.

powdersrider11 · Dec 17, 2008

Rixster said:
I am assuming the weights you have now are heavier then 55? IF so then you are on the right track. Normally you have to loose weight when you gain elevation.

Yeah I right now I have the weights in for here, MN. I know putting the secondary clutch weights in isn't that hard. But what about the primary clutch weight. Is that one hard to put in?

Squeal · Dec 17, 2008

putting weights in the secondary clutch is a *****.

winter4ever · Dec 17, 2008

squeal is right, amatures should not attempt to put weights in their secondary.

rdr99 · Dec 17, 2008

I hope you're talking about a 55 degree helix and not 55g weights... Run somewhere in the area of 64-68g at elevation. Doesn't it say on top of the airbox what to run at elevation? It won't be perfect, but it would be a good start.

shortstop20 · Dec 17, 2008

Less primary weight is required at high elevation compared to lower elevation. Weights go in the primary clutch and a helix goes in the secondary clutch. Each clutch has a spring as well.

powdersrider11 · Dec 17, 2008

Sorry, I was confused. I thought the 55 Helix was called a weight not a helix. I have put in the weights into the primary clutch before but I haven't put the helix into the secondary clutch. Is putting the helix in pretty complicated and time comsuming?

type_a_positive · Dec 18, 2008

Swapping helixes in an AC 2002 800 is easy

shortstop20 · Dec 18, 2008

^^^^^^^^
Yep, pretty easy to do.

powdersrider11 · Dec 22, 2008

sweet thanx.

polarisfornow · Dec 22, 2008

wow i was so confused by this post. first i saw 55g weights and thought wow that is really light for an 800. then i saw weights in the secondary and thought, my secondary doesn't have weights what is he running.

BTW make sure you mark exactly how your secondary came apart because they are balanced and need to go back together the same way they come apart. i like to use a sharpie.

diggler · Dec 22, 2008

polarisfornow said:
wow i was so confused by this post. first i saw 55g weights and thought wow that is really light for an 800. then i saw weights in the secondary and thought, my secondary doesn't have weights what is he running.

BTW make sure you mark exactly how your secondary came apart because they are balanced and need to go back together the same way they come apart. i like to use a sharpie.

agreed i thought 55g would be a little light, 62-64 is what you should be running. and it will take 5-10 mins to swap that helix all you need is a 13mm wrench and some allen wrenches.

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Weights for Clutching

powdersrider11

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