1. Husqvarna Motorcycles Made In Sweden - About 1988 and older

Clutch spring Barnett vs oem ?

Discussion in 'Vintage/Left Kickers' started by toolie, Aug 10, 2022.

  1. toolie Husqvarna
    AA Class

    Location:
    Ontario, Canada
    Husqvarna Motorcycle:
    1986 400 XC, 2018 TE300
    Other Motorcycles:
    1986 Can-am 250 ASE-sold, 1985 RZ500
    Why is there such a big difference between the oem and Barnett clutch springs?

    BTW, I'm replacing the clutch with Barnett fiber and steel plates. I also machined the wear on the aluminum clutch hub. 20220810_073413.jpg

    Attached Files:

  2. 2premo Husqvarna
    Pro Class

    Location:
    Northern NV
    Husqvarna Motorcycle:
    98 WR360, 1987 WR430, 1988 XC430
    Other Motorcycles:
    Sherco 300, 2002 KTM 380EXC
    the length wire thickness and coil count determine the spring pressure at different lenghts
    you will need to measure the spring rate at closed and open to determine if its higher or lower
    not sure but probably considered before including
  3. 86 400 XC Husqvarna
    Pro Class

    Location:
    Calgary
    Husqvarna Motorcycle:
    75,82,83,2x84,85,3x86,87,88 and 89
    Other Motorcycles:
    more Huskys
    I have put them in 4 of my bikes, they work great. Much lighter to pull and never had any issues with my clutches slipping.
  4. motomwo Husqvarna
    AA Class

    Location:
    Imbler Oregon
    Husqvarna Motorcycle:
    Many vintage big bore and automatics
    If you want to know for sure compare the two different springs on a valve spring compressor/tester. Your local machine shop should have a tester if you don't.

    Marty
  5. toolie Husqvarna
    AA Class

    Location:
    Ontario, Canada
    Husqvarna Motorcycle:
    1986 400 XC, 2018 TE300
    Other Motorcycles:
    1986 Can-am 250 ASE-sold, 1985 RZ500
    Thanks, I was a little concerned the spring force might be a little light. I'm sure Barnetts calculations are correct, if anything the Husqvarna spring specs seem a bit odd. With the amount of preload on the installed spring then the actual travel while pulling in the clutch lever in, it looks like it might be close to bottoming out.