Primary Clutch Fan
- Thread starter traveler
- Start date
Post up a pic of that cat fan!!
isn't it crazy that when someone comes up with something so simple that makes so much sense? I first saw it and thought... damn, why didn't i think of that? Just like better boards I bet all the manufacturers will have this within a few years.
I wonder if that wouldn't just fit on the P-85... they are fairly similar on the clutch cover.
Not on the dragon though... not much distance to the fender... But on the pro... Maybe??
Not on the dragon though... not much distance to the fender... But on the pro... Maybe??
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I wonder if that wouldnt just fit on the P-85... they are fairly similar on the clutch cover.
Not on the dragon though... not much distance to the fender... But on the pro... Maybe??
Not on the dragon though... not much distance to the fender... But on the pro... Maybe??
Tell me if I'm out in left field here........
1. It would seem that on the P85, the spider arms are going to create a lot of air turbulence/air movement. A spinning clutch with spider arms combined with shock tower vents would draw air into the area, correct?
2. Wouldn't a fan housing with the blades open to the direction of the spinning clutch create drag and put more load on the motor?
1. It would seem that on the P85, the spider arms are going to create a lot of air turbulence/air movement. A spinning clutch with spider arms combined with shock tower vents would draw air into the area, correct?
2. Wouldn't a fan housing with the blades open to the direction of the spinning clutch create drag and put more load on the motor?
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xc6rider
Well-known member
Their's no stationary item behind it to collect and create movement. I think it would just be like a cavitating pump. Good idea, but I don't think it's gonna do anything??? Who knows though. Maybe it's got other design intentions?
I'd be affraid to get objects lodged in it or frozen snow/water and create balance issues.
I'd be affraid to get objects lodged in it or frozen snow/water and create balance issues.
Hear you on balance..
But on the fan working, this fan is sucking air in from the center hole and "throwing" it out. Combine that with a cold air intake c-c with the clutch/fan and although you cant seal that connection I bet you would pull cold air in to the clutch compartment.
RS
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xc6rider
Well-known member
Yeah, I don't doubt it will move air, just dont think it's gonna be a BIG difference. If they reversed the way the fins are designed to move air and opened the outside edge as an intake, I'd think that would catch air from the outside diameter and force it through the bolt hole location much more effeciently?? But such design would certainly increase chance of lodged objects as it would go from large opening to small opening.
Interesting idea tho, that's for sure!
Some simple R&R with some test runs and a temp gun may show some good results though.
EDIT..... After taking another look at it, it is designed more so of how i'm thinking, just flowing center to outer. Fins have more of S form to them than I thought.
Now lets see someone play with a temp gun.
Interesting idea tho, that's for sure!
Some simple R&R with some test runs and a temp gun may show some good results though.
EDIT..... After taking another look at it, it is designed more so of how i'm thinking, just flowing center to outer. Fins have more of S form to them than I thought.
Now lets see someone play with a temp gun.
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At 8000 RPM... that squirrel cage fan is gonna move huge amounts of air.
AS for ice... clutch temps of about 100 Degrees will keep ice from forming plenty good.
Sucks it in the center, curls around the rim and blows it out around the rim of clutch... pumping air ... The clutch without the fan would "churn" air.
I would want to index it and have it balanced with the clutch.
3 bolts, some simple green and air every 10 rides or so... big deal... keep it clean!!
I clean my belt and clutch every 3rd ride anyway... sometimes every 2 rides.
AS for ice... clutch temps of about 100 Degrees will keep ice from forming plenty good.
Sucks it in the center, curls around the rim and blows it out around the rim of clutch... pumping air ... The clutch without the fan would "churn" air.
I would want to index it and have it balanced with the clutch.
3 bolts, some simple green and air every 10 rides or so... big deal... keep it clean!!
I clean my belt and clutch every 3rd ride anyway... sometimes every 2 rides.
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I just posted a thread on the Doo page also about this, my buddy just got back from the SD Statefair and said is Doo dealer just got off the phone with BRP and said there was late breaking news about some fan cooled thing they are going to add to the new 2012 Doo's looks like they seen the one on the new AC's and thought it looked good so they are going to do the same thing, way to go AC looks like they hit a home run !!
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snowmobiler
Well-known member
i wonder if it sounds like a turbo.
Now if you notice it mounts by 3 studs with nuts right between the posts! Looks like you will need some custom clutch cover? Or is there a cross brace that mounts to the post bolts? Cat said they will have ones to adapt to older sleds, we will see.
Mike
Mike
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xc6rider
Well-known member
Drill, tap, balance=home free. Would take some very good measurements to get centered and drilled correctly though, or it'll be way out of balance. Best way would be to have one designed balanced that uses existing bolt holes.
Lots of headaches for trying to transplant it. I'll be leaving mine stock
Lots of headaches for trying to transplant it. I'll be leaving mine stock
After considering this and reading your thoughts I'll have to side with xc6rider on this.
If it is bolt on then sure, go for it.
If not I believe a fan on the inside of some mesh @ a good location should do the trick. The PRO clutching area is super vented towards the footwell so if you push cold air in there you'll get plenty cooling.
Top this with one of my old ideas and make a thin wall, sheet-metall or plastic, from bulkhead to hood and separate the clutching area from the engine bay and any heat problem MUST come from wrong clutching.
RS
If it is bolt on then sure, go for it.
If not I believe a fan on the inside of some mesh @ a good location should do the trick. The PRO clutching area is super vented towards the footwell so if you push cold air in there you'll get plenty cooling.
Top this with one of my old ideas and make a thin wall, sheet-metall or plastic, from bulkhead to hood and separate the clutching area from the engine bay and any heat problem MUST come from wrong clutching.
RS
Maybe this was already mentioned....but the main benefit of this piece is to avoid tearing a hole in the side panel when laying the sled over. Ask any XP rider about the side panel being that close to the clutch....and the P-85/Cat clutch will be even worse than the TRA. I believe the prototypes had a solid plastic piece just for this purpose and then the fan idea was implemented later as a side benefit. ???
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