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Thread: Frame ID

  1. #1

    Frame ID

    Took a quick look at a frame today that has been chopped years ago. Left axle plate is a 7 and right is a 9. Looked in Palmers and that doesn't match up to anything I saw. Sidecar loops are gone, neck has been replaced. Has a good bit of paint on it so numbers didn't jump out at me. The frame looks to be usable, just wondering if the axle plates have been replaced or swapped. Can stop and take a longer look on Wed. Seadub

  2. #2

    Re: Frame ID

    Just curious if these 2 date codes could be correct for any of the years? Seadub

  3. #3

    Re: Frame ID

    Quote Originally Posted by bianese View Post
    Just curious if these 2 date codes could be correct for any of the years? Seadub
    He is referring to forging numbers, not date codes.
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  4. #4

    Re: Frame ID

    The numbers to the right of the forge casting which I thought were the date code numbers? Seadub

  5. #5
    Join Date
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    Re: Frame ID

    No "Date Codes" on frame castings, merely different forging numbers some of which overlap several years. The YOM date code is only on late '52 or so up frames stamped into the right side of the top motor mount, often lost on chopper frames and never on any thing earlier.
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  6. #6

    Re: Frame ID

    Left axle plate is a 7 and right is a 9
    7 was used in 47 and 48 on left axle plate
    9 was used from 50 to 54 on right axle plate.
    47 is knuckle frame, 48 is wishbone pan frame.

  7. #7

    Re: Frame ID

    Quote Originally Posted by 1950panhead View Post
    7 was used in 47 and 48 on left axle plate
    9 was used from 50 to 54 on right axle plate.
    47 is knuckle frame, 48 is wishbone pan frame.
    So it appears to be a '47 as it is not a wishbone and has had a later axle plate replaced. As always, much appreciated. Seadub

  8. #8
    Join Date
    Jun 2009
    Location
    Western Australia
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    1,355

    Re: Frame ID

    Seadub, although Palmer provided die numbers for some frame parts it doesnít necessarily mean things always occurred like that. With his die number charts he says empty fields mean the die numbers have not been determined. And he also says others may be identified.
    Are die numbers visible on the engine mounts and seat post forging? Also look for a frame repair number stamped on top of the seat post forging.

    Regarding a frame date code, the earliest Iím aware of is on a Harley Panhead rigid and itís 3 B (1953 February). Many people believe the practice began in 1952 but drawing number #47004-49A says frame date codes began on January 5, 1953. Obviously that means there may be some frames out there with date codes one month earlier than what Iíve seen. But 1952 frame date codes? Iíve never run across one and Iím not surprised about that.
    Eric

  9. #9

    Re: Frame ID

    Quote Originally Posted by Rubone View Post
    No "Date Codes" on frame castings, merely different forging numbers some of which overlap several years. The YOM date code is only on late '52 or so up frames stamped into the right side of the top motor mount, often lost on chopper frames and never on any thing earlier.
    I said date code but meant date clues, not the letter/number, true date codes. Going to pick it up tomorrow and get it blasted later in the week. That should make it pretty plain what is correct and what has been replaced. Seadub

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