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Thread: Frame changes for 1954 Panheads

  1. #1
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    Default Frame changes for 1954 Panheads

    For 1954 Panheads the factory used two wishbone frames and a straight-leg frame. But at what stage, as far as engine serial numbers are concerned, did the second wishbone appear and when did the straight-leg frame appear?

    I imagine the AMCA has factory documentation and/or factory drawings revealing when the frame changes occurred and I would appreciate it if I could obtain copies of whatever is available. Iíll be happy to pay in advance to cover any cost. Thank you.
    Eric

  2. #2
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    If no-one can post factory evidence in answer to my question then what does the AMCA use as proof when examining the frame of a 54 on the judging field?

    As Iíve mentioned before, Palmerís 37Ė64 SE has contradictory info regarding when changes occurred. At one stage it said the straight-leg frame returned at approx engine SN 3501 while another page indicated the change occurred at about engine SN 4500.

    And Palmer is contradicted by at least one AMCA judge who says the change to straight leg occurred at around engine SN 4000. Both refer to a factory drawing/blueprint but if they mean the same drawing then how do they reach different conclusions re the changeover?

    If the factory drawing was posted then the situation would be resolved and everybody would benefit.
    Eric

  3. #3
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    silence.....
    D. A. Bagin #3166 AKA Panheadzz 440 48chief W/sidecar 57fl 57flh 58fl 66m-50 68flh 70xlh

  4. #4
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    If you do a google search for frame blueprints you may be surprised at what you find.
    Be sure to visit;
    http://www.vintageamericanmotorcycles.com/main.php
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    Also be sure to visit http://www.caimag.com/forum/

  5. #5
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    I thought that Chris may have a copy of the referenced drawings, but maybe Palmer is the only person that has the referenced drawings? I don't know what AMCA judges use.
    Last edited by FCJ; 09-19-2020 at 04:29 PM.
    Fletcher Clark Johnston
    AMCA #282

  6. #6
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    Quote Originally Posted by FCJ View Post
    I don't know what AMCA judges use.
    Common sense. :-)
    Be sure to visit;
    http://www.vintageamericanmotorcycles.com/main.php
    Be sure to register at the site so you can see large images.
    Also be sure to visit http://www.caimag.com/forum/

  7. #7
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    Quote Originally Posted by Chris Haynes View Post
    If you do a google search for frame blueprints you may be surprised at what you find.

    Iíve done that many times over the years and drawing 47004-49A shows up all over the place.

    But the one Iím chasing is said to be 47000-40A and I have had no luck finding it. Apparently you have though so perhaps you could provide a link to it.
    Eric

  8. #8
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    Quote Originally Posted by Speeding Big Twin View Post
    Iíve done that many times over the years and drawing 47004-49A shows up all over the place.

    But the one Iím chasing is said to be 47000-40A and I have had no luck finding it. Apparently you have though so perhaps you could provide a link to it.
    Eric
    George Hood bought the frame table from Eddie Ryan's San Pedro, CA H-D Dealership. It came with a stack of H-D frame blueprints. Whether he had the -40 print you need or not I don't know. Sadly he just passed this week and I have no idea what is going to happen with his stuff.
    Be sure to visit;
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    Be sure to register at the site so you can see large images.
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  9. #9
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    We know Bruce Palmer has the drawing I'm chasing but I donít know where he got it from. Can anyone tell me? I donít know why there are contradictions regarding its content and neither do I know why the drawing hasnít been posted. If it was posted then the contradictions could be resolved and everybody would benefit.
    Eric

  10. #10
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    Quote Originally Posted by Chris Haynes View Post
    If you do a google search for frame blueprints you may be surprised at what you find.

    Still no luck finding drawing/blueprint 47000-40A.

    According to you in other threads the blueprint says that after frame 3000 in 1954 they were all straight leg.

    Palmer disagrees. Depending on which page of his book is read, the factory drawing is said to show the change from WB to straight leg happened at approximately frame 2500 or about frame 3500.

    Three changeover points from WB to straight leg? Are any of them correct? I do not know but apparently the drawing does and that is one of the reasons Iíd like to see it posted. And Iím betting a lot of other people would also appreciate seeing it.
    Eric

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