2019 new vents and clutching

Daag44 · Jul 15, 2018

summ8rmk said:
If the 'vent ' doesn't create enough heat or enough air movement, u will end up with a giant ice formation there......

There isn't much of a problem for trail sleds. I just don't get why there isn't a different exit for off-trail sleds.

mountainhorse · Jul 15, 2018

Begs the question...Still.

WHY are these sleds making so much heat in the first place in clutches??

.

caper11 · Jul 16, 2018

mountainhorse said:
Begs the question...Still.

WHY are these sleds making so much heat in the first place in clutches??

.

Lots of things, and every sled will be different. It up to the owner to optimize the performance of the sled.

Teth-Air · Jul 16, 2018

If you have owned other brands and then switched to Doo, you would quickly realize that hot clutches are not normal and you will only leave performance on the table by simply taking the heat away rather than stop it from happening in the first place. Proper clutching needs very minimal cooling. If the G4 was getting the power to the snow it should have easily beat up on the Cat. In most cases this is has not happened.

christopher · Jul 16, 2018

Reg2view said:
We'll see. The new panel and secondary cover is a nice piece for some enterprising tinker'er to mount an electric fan to pull air up and out of the panel, too. BRP comes up with their share of new ideas, some of them actually work, maybe this will be another.
.

Yup
I can see that Aftermarket part coming SOON!:face-icon-small-hap

Wheel House Motorsports · Jul 16, 2018

christopher said:
Yup
I can see that Aftermarket part coming SOON!:face-icon-small-hap

We ran a dirtbike radiator fan in the left footwell on a G4 and Axys, both move a LOT of hot air. I can assure you the footwell has no problem with ice buildup unless it is VERY cold out. And as soon as you get out in more open terrain it all melts right off. Pretty wild how quick it melts off when your blown 100+ degree air out of it.

Even though Ski-Doo still needs to address the source of the heat, good airflow around clutches is never a bad idea. Even the best working sleds are going to make heat when things are being worked.

mountainhorse · Jul 16, 2018

Exactly.

That heat is wasted energy.... and so is the energy used to cool them down.

Teth-Air said:
If you have owned other brands and then switched to Doo, you would quickly realize that hot clutches are not normal and you will only leave performance on the table by simply taking the heat away rather than stop it from happening in the first place. Proper clutching needs very minimal cooling. If the G4 was getting the power to the snow it should have easily beat up on the Cat. In most cases this is has not happened.

.

Blk88GT · Jul 16, 2018

Any word on the final clutch calibration of the 19s? If the sleds are on dealer lots, someone must have looked....

DanoXRS · Jul 16, 2018

donbrown said:
I'd bet it ice anyway to some degree unless you can heat the channel and have a drain port on the bottom.

IMHO a little venting experience with a 05-06 era 866cc engine.

Im gonna add velour vents on the top and a regular screen type across the side/bottom.

Gonna do similar on the exhaust side.

Plus drilled holes on the plastic belt cover.

Too bad we cant float the secondary BUT I read on here someone cut the channel on the shaft for secondary float?

Why can't we float the secondary?

Dano. :face-icon-small-coo

DanoXRS · Jul 16, 2018

Blk88GT said:
Any word on the final clutch calibration of the 19s? If the sleds are on dealer lots, someone must have looked....

One would think!!! lol

donbrown · Jul 17, 2018

DanoXRS said:
Why can't we float the secondary?

Dano. :face-icon-small-coo

I have my sleds in storage far away. BUT if memory serves me correctly the secondary clutch is bolted in a fixed position on the shaft?

On Polaris you simply remove the spacers/washers "centering" clutch. The clutch would float compensating for belt deflection.

I think the SKIDOO shaft has little or no tolerance to let it float?

There is a discussion on here someone cut the spline on the shaft allowing float.

Big10inch · Jul 17, 2018

What is the reason for shrouding the clutches on all that extra plastic? When you open the panel on a Cat or Polaris the clutches are right there for all the world to see. It would seem to me, Doo is shooting themselves in the foot with the basic design.

They can patent that nonsense all day long because the others simply do not need it. Maybe exposing the clutches to more air would work, it seems to on the other brands.

It is a great thing to be an innovator but when it simply does not work, and is contrary to what does work, maybe it is time to swallow that pride and follow what really works for your customers. It seems so obvious that just unshrouding all of that would be an improvement in air flow and a simple weight reduction.

Teth-Air · Jul 17, 2018

DITCHBANGER said:
Wonder if BRP will claim another 70f drop in clutch temps.

I hope they claim to drop another 200 degrees!

Teth-Air · Jul 17, 2018

Big10inch said:
What is the reason for shrouding the clutches on all that extra plastic? When you open the panel on a Cat or Polaris the clutches are right there for all the world to see. It would seem to me, Doo is shooting themselves in the foot with the basic design.

They can patent that nonsense all day long because the others simply do not need it. Maybe exposing the clutches to more air would work, it seems to on the other brands.

It is a great thing to be an innovator but when it simply does not work, and is contrary to what does work, maybe it is time to swallow that pride and follow what really works for your customers. It seems so obvious that just unshrouding all of that would be an improvement in air flow and a simple weight reduction.

Maybe Doo clutches are shy and feel naked when exposed!

Ski-doo#1 · Jul 17, 2018

christopher said:
FACTORY
That sled arrived yesterday

Christopher,

Any chance you or anyone has a better picture of the new clip up front?

Thanks.

farmboy84 · Jul 17, 2018

donbrown said:
I have my sleds in storage far away. BUT if memory serves me correctly the secondary clutch is bolted in a fixed position on the shaft?

On Polaris you simply remove the spacers/washers "centering" clutch. The clutch would float compensating for belt deflection.

I think the SKIDOO shaft has little or no tolerance to let it float?

There is a discussion on here someone cut the spline on the shaft allowing float.

Yes, there are aftermarket splined shafts and machined secondary clutches that allow it to float. Will cost you about $400.

christopher · Jul 17, 2018

Ski-doo#1 said:
Christopher,

Any chance you or anyone has a better picture of the new clip up front?

Thanks.

That blue one wasn't mine, so I am just sharing pics of it.
When mine arrives I would be happy to take LOTS of details photos.

DITCHBANGER · Jul 17, 2018

Big10inch said:
What is the reason for shrouding the clutches on all that extra plastic? When you open the panel on a Cat or Polaris the clutches are right there for all the world to see. It would seem to me, Doo is shooting themselves in the foot with the basic design.

They can patent that nonsense all day long because the others simply do not need it. Maybe exposing the clutches to more air would work, it seems to on the other brands.

It is a great thing to be an innovator but when it simply does not work, and is contrary to what does work, maybe it is time to swallow that pride and follow what really works for your customers. It seems so obvious that just unshrouding all of that would be an improvement in air flow and a simple weight reduction.

The G4 is too enclosed, cats let alot of heat out up by the steering column, poos have vents on the hood. The G4 is the worst sled i have seen with heat evacuation, for some reason BRP wants the quietest sled on the market which in turn traps heat under the hood.

christopher · Jul 17, 2018

DITCHBANGER said:
The G4 is too enclosed, cats let alot of heat out up by the steering column, poos have vents on the hood. The G4 is the worst sled i have seen with heat evacuation, for some reason BRP wants the quietest sled on the market which in turn traps heat under the hood.

But that is the real issue.
BRP has determined that their customers want a Mechanically Quiet sled. Nice exhaust note, but don't want to hear the clutches shifting back and forth.

Ski-doo#1 · Jul 17, 2018

Cause quiet and smooth running all add up to #ThatSkidooFeeling

Not joking.

2019 new vents and clutching

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