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NEW SETTING ON ULMER CLUTCH KIT

Discussion in 'Engine & Clutching' started by TOMBOB, Dec 4, 2019.


  1. TOMBOB

    TOMBOB TY 4 Stroke Junkie

    Messages:
    522
    Location:
    Saranac,Michigan.
    Country:
    USA
    Snowmobile:
    2006 VECTOR GT
    Just change the setting on Ulmer clutch kit from 9-1 to 6-1 and after putting on the belt
    And running the sled, belt has dropped from top of clutch to below top of clutch.
    Do I have added washer to correct this?
     
  2.  

  3. paradise

    paradise Extreme

    Messages:
    64
    Location:
    charles city
    Country:
    USA
    Snowmobile:
    09 vector
    you shouldn’t have to , that l don’t think would of been changed, just a little less spring pressure.
     
  4. TOMBOB

    TOMBOB TY 4 Stroke Junkie

    Messages:
    522
    Location:
    Saranac,Michigan.
    Country:
    USA
    Snowmobile:
    2006 VECTOR GT
    Guess I jumped the ship. Looked at again and it back to normal
     
  5. Rich Kay

    Rich Kay TY 4 Stroke Guru

    Messages:
    969
    Location:
    SE MI. Howell
    Country:
    USA
    Snowmobile:
    Yamaha apex rtx
    on a stand … let the clutches shift out some but giving it some fare amount of throttle, then let tings settle to a natural stop with no brakes applied as this will give ya a good indication of belt ride height.
     
  6. Wobbie

    Wobbie Newbie

    Messages:
    7
    Location:
    Braeside
    Country:
    Canada
    Snowmobile:
    15 Vector
    So does this result in more degrees of rotation or less? What affect has it had on the behaviour of the sled?
     
  7. TPAY243

    TPAY243 Expert

    Messages:
    438
    Location:
    Northern Wis
    Country:
    USA
    Snowmobile:
    2014 Yamaha Sr Viper LTX SE
    What's the reason to change the wrap on spring? Ulmer has endless hours of testing these kits and there is a reason why he had 9-1 in the directions. Changing it to 6-1 will make it shift faster and probably drop your RPM'S 4 to 500 on top.
     
  8. TOMBOB

    TOMBOB TY 4 Stroke Junkie

    Messages:
    522
    Location:
    Saranac,Michigan.
    Country:
    USA
    Snowmobile:
    2006 VECTOR GT
    Just wanted to try a different setting. I called him about .
     
  9. TPAY243

    TPAY243 Expert

    Messages:
    438
    Location:
    Northern Wis
    Country:
    USA
    Snowmobile:
    2014 Yamaha Sr Viper LTX SE
    I see your running the soft start spring in your primary that will also have an effect on the performance. The kit was not designed around that spring did you let Ulmer know about that.These clutch kits are designed to work with the parts and directions it came with. Not saying they can't be improved on but 9 times out of 10 when you start messing with them you loss prefomance.
     
  10. 2006Apexed

    2006Apexed Veteran

    Messages:
    37
    Location:
    Wisconsin
    Country:
    USA
    Snowmobile:
    2006 Apex RTX
    Stock 2006 Apex RTX. How does the soft start spring compare to the full Ulmers kit designed for trail riding? My stock setup engages way too aggressively for my tastes. Thanks.
     
  11. TOMBOB

    TOMBOB TY 4 Stroke Junkie

    Messages:
    522
    Location:
    Saranac,Michigan.
    Country:
    USA
    Snowmobile:
    2006 VECTOR GT
    I did loose top in speed, but that's not my thing. Going back to Ulmer spring next trip 2-14-20
     

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