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Old 03-01-2013, 06:48 AM
char393's Avatar
cha cha
Join Date: Oct 2003
Last Online: 11-03-2018 08:26 PM
Location: Conroe, Texas
Posts: 19,948

The helix changes where or maybe how the clutch engages/disengages... Is that correct?

Looking forward to seeing some pics from your first outing.
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Old 03-01-2013, 09:27 AM
coryR's Avatar
Intermediate Class
Join Date: Jan 2011
Last Online: 06-11-2014 05:02 PM
Location: newfoundland canada
Posts: 325

sick sled man my neibour has one similar to it. must be awesome riding in alaska!! i bet my little xrs 800 wouldnt get too far in the snow you guys get up there haha.. i agree with you when you say snowmobiles are twice as expensive.. thats for sure!! they break a lot more often too, always somthing to be fixed lol! good luck with the build though
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Old 03-01-2013, 02:33 PM
crdude's Avatar
Missing the days of riding
Join Date: Jul 2004
Last Online: 05-12-2020 10:02 PM
Location: Big Lake, Alaska
Posts: 4,503

Char, clutching a sleds is combination weights, springs on both clutchs and a helix. They all work together to achieve a desired effect. which changes with temperature, elivation and between sleds (a good clutch setup in my proxr would not work as well in a rmk given the the same conditions and vise versa even though they have the same engine)

Now, changing the helix effectivly changes the load put on the engine, if you run a helix with to steep of a ramp angle the engine will not have enough torque to pull its RPM that you want to run.

So, lets say my 700 makes its peak power between 7900-8100 RPM, I want my clutch setup to keep me in these RPM's at all time when im wide open so I'm always getting the max amount of power.

This is about the simplest way to try to explain clutching.

coryR, yeah there alot of prox's (very similar sled to this) out there. But I'v been holding onto this one, snowcheck only and made for only one year. Most places say there were only 242 of these proxr 800's, and there alot less now due to people parting them out & wrecks.. basicly, this sled is rare as hell. lol
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