PCC Carbon Fiber clutch cover

[RMK-King]

I wanted to ask some opinions on this new carbon fiber clutch cover from patrick customs.
http://patrickcustomcarbon.com/index.php?dispatch=products.view&product_id=29778

The carbon cover and full titanium fasteners removes almost a pound of weight from the primary which is a lot of rotating mass. Theory is this should reduce stress and make the engine rev faster and be more snappy.

My question is since carbon fiber does not absorb heat like the aluminum clutch cover will this increase the clutch temperature since there is less surface area to absorb the heat? Most of these covers have been used on race sleds with good results from what I have heard,but I do not know of anyone who has tested one on a MTN sled yet.

 

[Scott]

This product came up a few months ago.

The website days it saves 280g of clutch weight.

My question is if the clutch is lighter, will you need to run more clutch weight to tame the rpms?

 

[RMK-King]

Supposedly it does not change the peak RPM,just gets there faster.

 

[Scott]

I'm all for that.

But, it's pricey.

 

[rydningen]

Wont adding this cover mess up the balancing?

Or are the stock covers an independently balanced item before it goes on the clutch?

 

[RMK-King]

The carbon covers are pre balanced, not sure if the aluminum ones are balanced separate from the clutch or not.

 

[Scott]

It's my belief that clutches are balanced only as a fully assembled unit.

Who would balance a cover, and then assemble it to find that more balancing needed done? That wouldn't work out too easily, right?

 

[mountainhorse]

If you add the cf cover... you WOULD need to re balance the clutch.

 

[RMK-King]

Here is some more detailed info on the weight savings, I weighed the stock clutch bolt and pins myself.

Stock clutch pins/nuts- 53.25 grams
stock clutch bolt-220 grams
stock cover with bolts-500 grams
total-773.25 grams


TI clutch pins/nuts-31 grams
TI clutch bolt- 145 grams
Carbon cover with TI bolts-220 grams
Total-396 grams

377.25 grams= .83lbs total weight reduction

 

[Scott]

I wish I could find the old thread...I'd merge it with this one.

This thing is dead sexy.

 

[Merlin]

I wanted to ask some opinions on this new carbon fiber clutch cover from patrick customs.

I believe the term for it is something like "preoccupation with inconsequential increments"

 

[milehighassassin]

He is on the forum. Maybe he'll chime in.


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[Scott]

And they have panels now too? (info from another thread)
Is the champ hood a one-piece unit for RMSHA-minded guys?

 

[Scott]

Ok, thread derailed....


They also have a carbon/kevlar go-flap.

Not much of a weight loss, but trick. And cool.

 

[Scott]

Ok, back on track....more clutch parts:

 

[Scott]

ok....off track again.
http://patrickcustomcarbon.com/index.php?dispatch=products.view&product_id=29814

 

[Scott]

Tunnel cover.

 

[milehighassassin]

The go lever is really designed to be stronger for the guys that race and break them.

All that stuff is trick. Still too rich for my pockets.


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[Scott]

Yeah, I read that. Interesting.

Makes me think of when Brad Wursten broke the throttle flapper off in his femoral artery and almost died on the mountain.

 

[RMK-King]

Lots of neat trick stuff, carbon fiber sure is spendy though.

When Polaris went to belt drive they claimed 5lbs less resistance when carving do to less rotating mass, I wonder how much more resistance would be removed by shaving a pound of weight off the clutches?