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Thread: exhaust cover lengths

  1. #1
    Join Date
    Dec 2009
    Location
    Upstate NY
    Posts
    120

    Default exhaust cover lengths

    Anyone out there have a stock set of "slinkys" who could measure their lengths in the extended position? I think I have 2 fronts, and I want to cut one back to fit the rear exhaust pipe on my rigid frame panhead. Any help would be appreciated.

  2. #2
    Join Date
    Sep 2005
    Location
    Sarasota, Florida
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    4,178

    Default

    I notice you haven't had any replies, so I've got to figure no one has a stock set. Personally, I would just cut the rear to fit the pipe, as I believe there can be extenuating factors that would make for variable applications. I think the best solution would be to study period photos, and count the number of coils, or note the appearance of the coils at various bends in the pipe.
    Eric Smith
    AMCA #886

  3. #3
    Join Date
    Jul 2002
    Location
    North Hills, CA and Pine Grove, CA
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    5,464

    Default

    The length of the front differs between Panheads and Knuckleheads because of the different placement of the pipe to frame clamp.
    Be sure to visit;
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    Be sure to register at the site so you can see large images.
    Also be sure to visit http://www.caimag.com/forum/

  4. #4
    Join Date
    Dec 2009
    Location
    Upstate NY
    Posts
    120

    Default

    Thanks Chris and Eric for your replies. Your idea to count the coils is a good one Eric. And yes, Chris, the front would be shorter for I believe pre-'47 because of the front pipe clamp placement.

  5. #5
    Join Date
    Aug 2004
    Location
    Beautiful Northern New Mexico
    Posts
    2,797

    Default

    Short fronts also are used with a sidecar. Rears differ from Pan to Knuckle due to the pipe bell, etc.
    Robbie Knight Amca #2736

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