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Thread: 38 frame identification ①

  1. #1
    Join Date
    Feb 2010
    Location
    ***an
    Posts
    93

    Default 38 frame identification ①

    Hi here、
    any idea..?
    this is a 38 frame I was told. I realized some #s on it... please refer the pics attached.
    S__155131909.jpg S__155140101.jpg S__155140100.jpg
    looks 404.. 202...4... these are original stamp or what? please advice.

    tks
    Shin

  2. #2
    Join Date
    Jan 2003
    Location
    England
    Posts
    1,305

    Default

    I have a 1938 frame here with a UL motor in it. Bruce Palmer's book was most useful in dating it. It has the closed end axle clips, no dent under the frame to clear the later 74 cubic inch cylinder heads, and no die numbers on the engine mount forgings.

  3. #3
    Join Date
    Apr 2008
    Location
    Upper Yarra Valley, Victoria. Australia
    Posts
    894

    Default

    Hi Shin. The casting numbers look original Harley but your not showing the parts that will define a 38 frame. Is the left axle carrier undercut in the machining of the axle slide. Does the left axle carrier have a cap tack welded on the end. There's more info that the experts could give but if you post a pick of the left axle carrier and maybe left side of the neck and the cross braces under the oil pump, you'll get knowledge from some of the people who know.
    Steve Little
    Upper Yarra Valley. Victoria.
    Australia.
    AMCA member 1950

  4. #4
    Join Date
    Aug 2004
    Location
    Beautiful Northern New Mexico
    Posts
    2,745

    Default

    The dash/speedo mount has been replaced. Those are also non-standard welds by the rear stays to top tube.
    Robbie Knight Amca #2736

  5. #5
    Join Date
    May 2009
    Posts
    133

    Default

    I have what I've always believed to be a '38 frame. The left axel carrier has a welded cap at the brake anchor. I don't understand the meaning of "undercut".


  6. #6
    Join Date
    Apr 2008
    Location
    Upper Yarra Valley, Victoria. Australia
    Posts
    894

    Default

    Quote Originally Posted by larry View Post
    I have what I've always believed to be a '38 frame. The left axel carrier has a welded cap at the brake anchor. I don't understand the meaning of "undercut".


    Hi Larry.
    If you clean the road grime off the part you have pictured, you will be able to see that instead of a raised axle slide, (the area that the axle slides along) it is undercut. The machinist has cut it away and the machining is undercut into the part.
    Regards Steve.
    Steve Little
    Upper Yarra Valley. Victoria.
    Australia.
    AMCA member 1950

  7. #7
    Join Date
    Jul 2006
    Location
    Central Florida
    Posts
    937

    Default

    Show a pic of the other side of the left axle carrier in your Post #5. Q is about how it's machined on the other side.

  8. #8
    Join Date
    Feb 2010
    Location
    ***an
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    Default

    thank you guys! any advice about the#s 404..... ? please take a look closely..
    Last edited by hdhikaru; 06-18-2019 at 06:34 PM.

  9. #9
    Join Date
    Feb 2010
    Location
    ***an
    Posts
    93

    Default

    Attachment 25038 how about this sidecar loop. looks original to me but no casting#. grind off or repop..?? advice please. Shin

  10. #10
    Join Date
    May 2009
    Posts
    133

    Default

    There is no raised portion at the axel slide. It appears to be as forged.



    The inside surfaced is raised.


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