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Was wondering the same question.............I picked up a set of 60/60 gears out of a Crossfire & the secondary clutch from it.

I'm hoping that will solve the problem of it being such a pig on fuel........not concerned too much about top speed, just want to get more than 60 miles to a tank of fuel on my M7.

You'll probably have to get '07 gears out of a crossfire or Fseries sled (depending on how tall of gears you want to run), because of the reverse gear.

I would imagine small changes to the clutching would / will have to be made.
 

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How much top end do you want, and what r u getting now? There really is NO need to change gears unless you change tracks and secondary clutch. The gain with any gear wil be little to none in stock form. The M6,7,8,10 are all geared to run in a respective 1:1 ratio or less which is around 50-60 mph, after that you are in the very ineffcient OD. The top speed for all of these machines at thier respective operating rpm is approxamately 100 mph. This CANNOT be achieved unless on a run stand, or going DOWN HILL on ice or similar resistance surface. Keep in mind after 80 mph, you can start to expect light to severe damage with track and skidframe components, it will depend on how your suspension is adjusted at time. Things like track stab,clips flying off, blown thru hyfax( in just one pass) lugs being ripped off completely, IS POSSIBLE or LIKELY. Alot of track sag, good for MTN riding, catastrophic on a high speed run. On a run stand at the hillcross, an entire rug destroyed and sent out back about 40'. the extrovert drivers will tuck the rug under and into the rail caps and this is where most damge begins. A very good holeshot rippin setup for an M8, is a AC y/g,red, or new gold primary spring. Weights will have to be adjusted for your Alt. secondarybelow 3K, 48/44-36 or 44-36 full progressive ODS can get you both from dalton, a spring in the 150-280 range for the secondary and 036 belt or 046, if an 060 belt is used a lower 125-225 spring can be used, Your weight and snow conditions will determine exactly what spring is best for you, as the load a 2.5 lug track adds to a motor is WAY more and sensitive to clutching than a short lug. Springs are cheaper than weights and new helixes, and can make wonders of what else you might have in your box. Above 3K a 46/42-36 or a 44-36 FP is better. A D&D shift assist is a must for smoother shifting and CONSISTENT results. Also shims of any kind to adjust spring pressures with new helixes are a good idea to make quick rate changes, .25 is about 30 lbs on the AC orange spring.
 

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hey sleeper are those helix angles avail. in the one piece cam? if not and using the 04-05 end cap can't the plastic nut be used for the tension as well? forgive the ignorance was looking for a one piece and now had to revert to the old style and no nothing about it. thanks
 

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<div class='quotetop'>QUOTE (swf7 @ Jan 31 2007, 01:22 PM) <{POST_SNAPBACK}></div>
was just looking for the M8 stock gear ratio and what would work to get a little more speed/possible better fuel milage. thanks .[/b]
Go to www.hiperf.com its diamond drive ind. They have all gear ratios and options. Your M8 should be2.33 .My M1000 is 2.11and i know there at least 2options in between. Good luck.
 
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