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When do you guys replace your secondary springs?

Discussion in 'Engine & Clutching' started by Redbeard, Mar 9, 2019.


  1. Redbeard

    Redbeard Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    1,687
    Location:
    IN
    Country:
    USA
    Snowmobile:
    2012 Apex, 136 M20, PB80
    2008 Vector, 136 M20, PB80
    2004 RX Warrior
    1995 Vmax 4 800
    1995 Vmax 600 LE
    1995 Ovation 340 LE
    When do you guys determine the appropriate time to replace your secondary springs? Do you have a set mileage you change them, or do you monitor the performance? I have over 9,000 miles on my current spring and I'm noticing a 200-ish drop in RPM and a loss of 10 mph.

    The drive belt is new, the engine and driveline are healthy, and the primary is tip-top...been through all of this.

    I assume a weakened spring would allow the secondary to shift too soon and pull down my revs?

    :sled1:
     
    Last edited: Mar 10, 2019
  2.  
  3. Redbeard

    Redbeard Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    1,687
    Location:
    IN
    Country:
    USA
    Snowmobile:
    2012 Apex, 136 M20, PB80
    2008 Vector, 136 M20, PB80
    2004 RX Warrior
    1995 Vmax 4 800
    1995 Vmax 600 LE
    1995 Ovation 340 LE
    I think I just answered my own question ...

    Team roller secondary:

    Left spring is brand new, right is used. Same spring, but there is 1/4" difference in height between the two. The used spring is shot!

    I don't see any reason a stock Yamaha spring, or other mfg, wouldn't fall into the same category.

    Today's lesson:

    Don't run your clutch springs 9,000 miles, or performance will suffer. :cool:

    20190309_174926.jpg
     
    Last edited: Mar 9, 2019

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