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Old 11-21-2011, 12:10 PM   #1
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Anyone run green spring in their secondary?

Does anyone run a green spring in their secondary? I listened to a recommendation and went from a red/white spring in secondary clutch to a green spring in my 02 MT 800 EFI 151. Has anyone else made this change? If so how did it work and what hole did you use for pretension? Also where is a good place to buy bearings part (# 1602-375) and drive sprockets other than dealer?
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Old 11-21-2011, 03:55 PM   #2
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I found the green to be too stiff and could not get it to shift up fast enough, hard on rollers too. Maybe with a steep helix it would be alright but I had it on a 53* and my 900 just didn't like it, went back to the R/W
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Old 11-21-2011, 04:11 PM   #3
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Not by choice...

Hi. Have had a green spring i my secondary clutch. That was used with stock low alt setup (70.5g and purple primary, 55deg helix) and 21/40 gearing. Did try both center and lowest spring pre tension.

The machine was very on/off and was slightly to high on revs. I did not like it a bit. Perhaps with some other changes it could work.

Did change back to stock red/white and that was more to my taste. And if tensioned at the highest some of the same up/down shift can be archived.

Did later try 19/40 gearing that so may recommend for low alt. Any i really love it. Also tried 19/43 but that was to low for me... Have also made some further changes with adjustable weight, other helix... Not all tested yet.
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Old 11-21-2011, 04:38 PM   #4
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Yeah, I even like the R/W in my 02 570mc.
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Old 11-22-2011, 06:47 AM   #5
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too tighten the spring do you put it the last hole to the right?
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Old 11-22-2011, 10:00 AM   #6
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Yes, you wind the spring tighter.
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Old 11-22-2011, 12:11 PM   #7
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The recommendation came from my parts guy I was going through at the time. My parts guy was highly recommended to me by an old sled head friend of mine. I just took his word for it and ordered the spring. Maybe hes not as knowledgeable as I assumed he was. He said it would help tremendously for back shifting in deep snow conditions. I still consider myself a rookie since I bought my sleds half way through the season last year. I have not had a chance to run it yet. I am in the process of putting on a new track and found a bad bearing, retaining collar and driver. The red/white that was in it was set to the highest pretension. Maybe I will try the green on the lowest and go from there. Thanks guys
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Old 11-23-2011, 08:07 AM   #8
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It will backshift very fast, just doesn't upshift well. That spring was developed for snow cross racing and steep helix angles. If you have a R/W wound tight and still not backshifting something else is wrong. Wrong weights in primary, bad rollers or bushings, belt too soft, or you need a diferent helix angle. You can get your bearings at an auto parts store for about $11.00
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Old 11-23-2011, 05:30 PM   #9
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Well, bad driveline bearing could easily be interfering with torque feedback, giving bad backshift. This, along with a worn out spring could be the whole problem. Try the green, but if it's too much, remember to try a new red/white, it really should be just right.
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Old 01-14-2012, 11:12 AM   #10
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Well I got the sled all put back together and I took your guys advice and put the R/W back in. Not much snow in my area delayed testing but after adjusting tension I found that 1 hole from full tension was the sweet spot for the snow conditions I was in at the time. It runs about 7400 at wot then winds up to bout 7500 on the top end.

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