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Thread: 9 tooth drivers mountain max

  1. #11


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    Very nice vincent! I have yet to dig into everything thats done to my sled. Theres a hill climb next week and i'm just trying to figure it all out. I'll try to keep the 9 tooth drivers. Your saying after your performance mods you had to re clutch correct? The way the sled is set up is perfect for the pipes as of now. No over revving with the performance mods, who ever set it up before me knew what they were doing and thats why I dont want to switch everything around by switching to the 8 tooth drivers. The 121 spun like a son of a gun so i feel there is plenty of power for more traction. I really appreciate this forum its alot of fun to see what these old triples can do!

  2. #12
    Senior Member ProStock Vincent's Avatar
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    In stock form my sled always over reved. I figured going from a stock worn out 0.75 lug track to the Cobra would have help with that, but it didn't and I had to reclutch.
    Last edited by Vincent; 01-11-2019 at 11:50 AM.

  3. #13


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    Got it then I should be good then! Thanks for the info!!!!

  4. #14
    Senior Member Open Mod A couple of bucks's Avatar
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    Quote Originally Posted by vanslay View Post
    I can get around a 2.0 ratio if i run the 19/39 combo with the 8 tooth driver. Does that sound more acceptable?
    Running 19/39 gears coupled w/ 8 tooth drivers is going to put you waaaay too low.
    IMG_0184.JPG
    Dannyboy

  5. #15


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    This was the chart I was looking at. I'm just going to stick with the stock gearing and drive for now until I have the money for gears and clutch work. Track is on the way, mounting brackets going in tonight. Another quick question for you guys... Will the sxr shocks fit on the mountain max skid? I was going to give that a go tonight as well while I have the skid out.

  6. #16
    Senior Member Open Mod A couple of bucks's Avatar
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    A 21 w/ your current 9 tooth drivers would be perfecto.
    Last edited by A couple of bucks; 01-15-2019 at 04:25 PM.
    Dannyboy

  7. #17


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    When I change the drive is when I'll do the gearing. What gearing would you suggest with the 8 tooth? I currently have stock gearing for the mm 600 (19-39) and the sxr (22-39)

  8. #18
    Senior Member ProStock Vincent's Avatar
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    Quote Originally Posted by vanslay View Post
    When I change the drive is when I'll do the gearing. What gearing would you suggest with the 8 tooth? I currently have stock gearing for the mm 600 (19-39) and the sxr (22-39)


    Start with the sxr's 22-39 gears with the 8 tooth drivers.. But like you've already mentioned, you still may need to gear up to a 23 tooth top gear to compensate for the drivers.
    Last edited by Vincent; 01-15-2019 at 09:46 PM.

  9. #19


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    This is a 500 ft hillclimb race run Sunday. You think I should just run the 8 tooth this weekend and my clutching should be ok with the pass until I get the 23 tooth gear? I have a bunch of 1.5 studs lieing around I'd like to put in it but the 9 tooth won't let them fit right now...

  10. #20


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    http://www.cmsaracing.com/calc.htm?f...qJ1MKxK8Y0c0kA

    This calculator is pretty awesome! I'm going to go with the 8 tooth and stock 700 gearing. I feel like it will be a good starting point for the 500 ft drags. I'll keep you all posted. She will be together thursday night and testing and suspension tuning will start friday morning!

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