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

Fix for rusty Femsa magneto cam?

Discussion in 'Vintage Restoration Projects' started by Bill Orth, Sep 7, 2014.

  1. Bill Orth Husqvarna
    A Class

    Location:
    Parker, Colorado
    Husqvarna Motorcycle:
    MI 400 Cross, MJ 450WR, MK 250WR
    Other Motorcycles:
    Rickman/Triumph, and 15 others
    I just started working on an MJ 250WR and found that dampness had gotten into the magneto cover. Everything steel is pretty rusty, but salvageable. The inner cam surface of the flywheel had some serious rust spots that have left significant pitting. I know this would ruin the points rubbing block quickly, so am thinking of a solution. Has anyone tried fixing this condition by putting a light film of JB Weld on the rubbing surface and then sanding it back down to metal, so the JB fills in the pits? Or any other ideas? Thanks for the collective wisdom on the site!
  2. Nordman Husqvarna
    A Class

    Location:
    Norway
    Husqvarna Motorcycle:
    1999 wr 250
    I think a epoxy will work fine if the damage isnt that bad, just make sure that its clean befor you fill it. If it isnt clean, it will not stick for most of the time.
    Used epoxy's as filler, not on this tho. But it works great if you do it right.
  3. suprize Husqvarna
    Pro Class

    Location:
    Bendigo, Australia
    Husqvarna Motorcycle:
    WR 400, bike in a box Moto Villa 350
    Other Motorcycles:
    ktm 300
    id try the epoxy
  4. jimspac Husqvarna
    Pro Class

    Location:
    Connecticut
    Husqvarna Motorcycle:
    82 250WR, 82 430WR, 84 250WR, 85 400
    Other Motorcycles:
    86 400WR, 82 Montesa Cota 349
    The epoxy is somewhat denser than JB Weld. But for your application you may want something like liquid steel as epoxy may still wear down somewhat fast