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Discussion Starter #1
I just found out that my secondary spring on my 2nd sled, an 81 Trailcat, was broken all last year, only rode it once or twice myself.
Have new spring on order, but question is how much preload gets put onto one of those, if any.
I assume that some preload is needed to get the driven clutch to close up in back shifting.
Can't wait for snow to test her out, might go find some frosty grass early some saturday morning, and go wake up some cows.

When hell freezes over, we'll ride there too.
 

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probably has 5 holes which the spring tang can fit in,use middle hole;
also you also need to twist the helix a i/3 of twist just past the first of ramps and assemble
 

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Discussion Starter #3
Thanks Xc,
So that's basicly 1 click back, correct?
How will I know if I need to go up or down in the spring tang holes?
My guess would be more tension = higher revs, more torque, faster backshifting and lower top end.
lower tension = the reverse.
Correct me if I am wrong.
Hey great name for a band "The Spring Tang Holes"

When hell freezes over, we'll ride there too.
 

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More/less tension will raise/lower your wide-open-throttle (WOT) by about 200 rpm. Depending on the sled.
That's the general rule: tune your secondary clutch first to match your riding style or conditions, then tune the primary to keep the engine in the powerband as well as choose the initial clutch engagement rpm. Fine tuning is the hard part. There's so many variables.
Secondary= senses torque.
Primary= senses load.
 

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Discussion Starter #5
Thanks alot Megaman & Xc special,
I think that I've got it now, just some testing, and trial and error.
I have never been much into tuning the carbs and clutches,
I used to think, if she starts then get on and go, if not then fix it.
I have learned alot hang'in around here, so I'd love to start tweek'in my
machines to get the most bang out of them.
Thanks again,
Kev

When hell freezes over, we'll ride there too.
 
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