Venting/Porting TRA Cover
- Thread starter HPJUNKIE
- Start date
What cover? The clutch guard?
H
Highmarker
Well-known member
I would think that could throw off the balance pretty easy.
Not much meat there that isn't critical to strength, also holds the ramps and the rubber damper is riveted. All the power goes through this before it gets to the sheaves. I would hasitate to mess with it. The movable sheave however can have material removed like the Doo race clutch.
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What WB said^^^. The more holes you put in it, even if you balance it, there is a likely possibility that a crack will form, which means more likely to catastrophically fail. Doubt you are going to find much cooling there, better to spend the time getting cold air from above the hood down towards the clutch. If the hot air is just venting into and circulating hot air, probably very little performance advantage IMO. You would be better off adding some venting to the existing belt cover IMO.
M
Macattack
Member
There used to be a company out of Spokane Wa who would machine the excess material off of the movable sheave. Balance it and send it back to you. But they are now out of business. I've had good luck with 2fun4u vests on the side and SLP vents forward and aft. For the past 2 seasons, I've averaged a belt per 1000-1300 miles.
OK, I'm probably going to be pointed and laughed at, but what if you were to add a RC airplane prop to the outside of the clutch, as rpm increases, so does the airflow over the clutch. Wouldn't affect balance, might lop some fingers off, though!
8
8alltheway
Member
Wow ^, that idea might be like one of those things that sounds just crazy enough that it might work? im sure not gonna be the first to try it tho 
. sounds dangerous for sure...i like it
. sounds dangerous for sure...i like itI've always wondered why they don't just put a couple fins on the outside, and put a shroud around it, like a rat cage fan. That'd suck some air through it, and use the shroud for two purposes. You see them do it on big AC/DC motors all the time.
Well, who wants to try it? Might have to be something to look into, with summer coming, I'm always looking for an excuse to tinker on my sled!
Might have to be something to look into, with summer coming, I'm always looking for an excuse to tinker on my sled!
does every one have problems with skidoo clutches running hot?
I think "hotter" than others would be a fair statement.
No. Mine are always cool (or warm to the touch after a long pull) but I think its mostly in part to the 20-some-odd 1 1/4" holes I have in the belt shroud, low gearing and mesh hood.
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