Clutch Engagement

[Radar78]

I’d like to find a primary spring for my daughters 07 M6 that allows for a smoother, lower RPM, engagement over stock. Any suggestions?


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[kanedog]

Try a start number of around 100 lbs. Not many new springs have low engagement so you may have to call around and find an old school clutch tuner and/or spring.

 

[boondocker97]

I seem to remember something about a gold spring (maybe out of a bearcat?) from Cat that had a low engagement point.

 

[fishhunter18]

0646-433 Gold 75-275 lbs

 

[Radar78]

Thanks a bunch guys.


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[kanedog]

Thanks a bunch guys.


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Report back with the results. I’m looking frwd to see how it worked! Happy snomo!

 

[kiliki]

speed wrexs 120/310 is the one you want.

 

[mbcat]

Arctic cat dark green primary, 2015 stock 800 primary. 100/300

 

[mbcat]

I run it in my 800, nice low 2800 engagement. Thunder abc kit also smooths out engagement by closing up belt to moveable sheave clearance. Some of them 04-15 primaries have huge clearance. RPM screams up & ckutch slams into belt making abrupt engagement. My 6,7&800 all engage really smooth with any spring from 100-190 initial rate and ABC kit.

 

[Betterview]

I had a 2007 600. To get a smooth take off the spring is a factor but I found that getting the belt tightened to just before sled creeps at idle and keeping the weight swing arm loose enough that the clutch weight swings very freely made the biggest difference. (tighten just enough that that the rubber O-rings contact well, might need a little lock tight on nut)

 

[mbcat]

That def helps, might notice rpm drop from added force weights apply swinging free. Been doin that for yrs too