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Low Elevation Clutching

MDEVO

Chic Chocs Addicts
Lifetime Membership
Snowchecked a 17-Prormk 163 and unfortunately they ship these to us with clutching for a much higher elevation.


Wondering if anyone has dialed in clutching for around 2k?


Thinking 10/70 and gold spring in primary as that is how they ship international models...?


Any help or a starting point appreciated.
Cheers!
 
Mine came with a Black 120/320 and 70 gram weights for low elevation and worked great at the 2200'.... I was even able to run 68 gram weights in certain condition's.


Run the Polaris Black
or
Almond/Red 165/310 would be a nice upgrade...
 
Mine came with a Black 120/320 and 70 gram weights for low elevation and worked great at the 2200'.... I was even able to run 68 gram weights in certain condition's.


Run the Polaris Black
or
Almond/Red 165/310 would be a nice upgrade...


Nice ....thanks for info....
I recieved similar info from a friend in Quebec, and he also sugested the SLP green/pink as upgrade.
Cheers
 
Im thinking about trying something different than the MDS weights that I have on my SKS right now. I have not been that impressed with those so far. May end up trying that green/pink with 11/70's
 
run gold/70's for 600' here in michigan. no issues. rpms are right on the spot.

the older pro rmks we ran 68's but on axys we run 70's.
 
Before i went to a2d's clutching i ran stock with 70's and for general hill shooting and riding they worked ok.

In the steep and treed they sucked, backshift was lazy. Getting on and off the throttle 2 or 3 times mid hill and the rpm would settle low first then lower finally turnout.



After the clutching the sled jumps off the bottom much quicker (trackspeed not rpm) when dipping through the trees in a sidehill rpm instantly recovers after a hole and trackspeed is consistently 3-5 mph higher when climbing than stock.

https://vimeo.com/182299957

Listen to the motor tone and how the sled recovers from setting the ski's under the tree.

Sled is a 16 163x3 with slp pipe set.

My brothers sled is the blue, mine is orange. Setup exactly the same.
 
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I ran the recommended gold spring and 10-70s at 1500 feet. Rpms were spot on, and I found the engagement to be lower than with the black spring, which is what I'm after. I ran all the factory recommended setups riding at 1250-1750 feet, 5000-6500 feet, 8500-10000 feet, and 9500-11500 feet in the 4 different areas I rode this year and was always maxing out where I should be. Stock clutching backshift is super quick imo, but the up shift is so God dam lazy no matter what altitude you're at, you can hear the slow up shift clear as day in all my pov videos. https://m.youtube.com/watch?v=Aa-W5KuQdJY
 
Before i went to a2d's clutching i ran stock with 70's and for general hill shooting and riding they worked ok.

In the steep and treed they sucked, backshift was lazy. Getting on and off the throttle 2 or 3 times mid hill and the rpm would settle low first then lower finally turnout.



After the clutching the sled jumps off the bottom much quicker (trackspeed not rpm) when dipping through the trees in a sidehill rpm instantly recovers after a hole and trackspeed is consistently 3-5 mph higher when climbing than stock.

https://vimeo.com/182299957

Listen to the motor tone and how the sled recovers from setting the ski's under the tree.

Sled is a 16 163x3 with slp pipe set.

My brothers sled is the blue, mine is orange. Setup exactly the same.


Works real nice!!
Mine is a 163x2.6 has a can but no SLP (yet), wondering if the extra couple ponies you've got would make much difference with how clutching is set up? I suppose 2.6 to 3 track length would help my track speed. I'm gonna give them a call...thanks for the video's!!!
 
I ran the recommended gold spring and 10-70s at 1500 feet. Rpms were spot on, and I found the engagement to be lower than with the black spring, which is what I'm after. I ran all the factory recommended setups riding at 1250-1750 feet, 5000-6500 feet, 8500-10000 feet, and 9500-11500 feet in the 4 different areas I rode this year and was always maxing out where I should be. Stock clutching backshift is super quick imo, but the up shift is so God dam lazy no matter what altitude you're at, you can hear the slow up shift clear as day in all my pov videos. https://m.youtube.com/watch?v=Aa-W5KuQdJY

That is a beauty spot, and some nice riding. It does sound lazy compared to Sheetmetalfab's set up. Thanks for the info and video!!
 
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