clutching for elevation question

[jasonsamko]

I have a buddy with a 2011 switchback assault 144 with a 2" track.
He will be going out west with us this year and im trying to figure out what wieghts he will need to buy.
we will be riding cooke, west yellowstone, and snowies.
i know snowies we ride between 10k -11k
not sure about cooke or west yellow.
but need to know what gram weights he needs to cover those areas.
His sled is stock with stock clutching.

Thanks,

 

[skibreeze]

Running 58g in my '12 PRO

 

[barry1me]

would a switchback assault with a 2inch track use the same weights as a pro rmk with a 2.4" track?

 

[jasonsamko]

I found out that the switchback uses flatland clutching. Different springs as well as weights.
Looks like he will have to change a primary spring and weights.
I believe I
His secondary will be fine as rpm is controlled in the primary. Secondary controls shifting.

Hopefully some one with a switchback will chime in. Otherwise I will call some clutch gurus tomorrow and get exact answers I need.

 

[WyoPro]

Secondary controls shifting....yes. But the helix and spring combo has a direct impact on rpm as well...

 

[jasonsamko]

Basically looking for the easiest way to make it work "good" out there for him. He is only riding out west 2 times a year for 2 days each time. Not sure if he's gonna want to change secondary spring and helix to gain a bit of performance.
I got the specs for changing everything over. Hope to find an option for him to get good performance with less money out of pocket and less time doing change over. He may want to change everything but I want to offer him a easy option if there is one.

 

[Covelli44]

Wish I could help you but I am the furthest from a mechanic. Give it a day and check back, somebody will have the perfect setup for you. If all else fails you can try contacting a dealer out there and see what they recommend

 

[Pro-8250]

Last year we had a friend with the exact same sled your Buddie has. Except we were in Island Park ID. We went with 10-60 in the primary and left the secondary alone. Didn't hear any complaints. Which is ironic being that he has been a Ski-doo guy his whole life.

 

[GoBigParts]

According to the Polaris Cutching chart 10-58's looks like the best set-up for 10,000-12,000 feet which is where most riding takes place in the snowies correct?

For the 2 times I'm going to be going out there a year I wonder if it is worth changing the secondary spring like the cart says. Does anyone run 10-58's with the stock black secondary spring?

 

[barry1me]

According to the Polaris Cutching chart 10-58's looks like the best set-up for 10,000-12,000 feet which is where most riding takes place in the snowies correct?

For the 2 times I'm going to be going out there a year I wonder if it is worth changing the secondary spring like the cart says. Does anyone run 10-58's with the stock black secondary spring?

ya I ran the 10 58s in my 163 last year in snowies with stock black secondary spring....seemed good to me. I did buy the black/purple secondary spring, but I never installed it.

 

[GoBigParts]

A lot of guys are saying 60's. I putting the 58's in especially seeing how the first tank of gas will have oil in it.

 

[barry1me]

A lot of guys are saying 60's. I putting the 58's in especially seeing how the first tank of gas will have oil in it.

I have 58s and 60s and last season I found the 58s put me right at 8200rpms on my 163 at the snowies. My sled is all stock, if you had a few mods I would bet the 60s would be dead on.