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Technical 1926 Model T Ford Roadster Sub Rails "Help Needed"

Discussion in 'Traditional Hot Rods' started by chev34ute, Jan 8, 2023.

  1. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    Hey Guys. l picked up these panels over NYE with the intention of creating my own Roadster body. 7960325A-B9D6-447A-A697-255F5C47927C.jpeg
     
  2. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    I already have a cowl and doorsand the idea is for me to use the other panels as patterns to create new one ones out of steel. Everything from the cowl back will be new incuding the doors. 97E27A92-728B-4AA1-98A4-F489BE590D6D.jpeg
     
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  3. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    The reason i am fabricating all the panels is beacuse its virtually impossible to find these original panels here in Australia, the second reason is i dont have the funds to purchase a fibreglass body, nor do i want one. One thing i do have is the equipment and resources to fabricate a body from flat steel. This is the Model A Roadster body i have been working on. 087D31CE-943F-4F03-A58F-13EABF50A95F.jpeg
    58A9A6B7-68D0-4076-BE0B-1396E86E3B81.jpeg
     
  4. rusty rocket
    Joined: Oct 30, 2011
    Posts: 5,223

    rusty rocket
    Member

    There was a picture here on the H.A.M.B. where they took the front half of a T roadster and graphed on the back half of a model A sport coupe rear quarters.
     
  5. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    The most important foundation for any project as extensive as this is to have a solid set of subrails. I constructed these ones out of 1x1 and 2x1 Rectangular Hollow Steel, while much cheaper than reproduction sub rails , RHS based sub rails are actually much stronger as well. 6DC227BE-66CE-4412-8411-D5850A4AF38A.jpeg
     
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  6. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    I will be constructing the subrails for the Model T Roadster using the same material. The subrails shown above will be used as a jig for the Model T ones.
     
  7. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    So the only thing holding me back is a lack of measurements. 4731C696-DB9D-40A0-8642-17A847B9CE76.png
     

    Attached Files:

  8. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    I found these images courtesy of google but i have been unable to source any of the sub rails on their own. A77D1D61-E4D4-438A-8958-302664AF8FBB.png
     
  9. alanp561
    Joined: Oct 1, 2017
    Posts: 5,291

    alanp561
    ALLIANCE MEMBER

    Did you try the Wescott Model T frame drawing. Frame measurements and a scale to work off of for the subrail.

    upload_2023-1-8_21-56-22.png scale to
     

    Attached Files:

  10. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    Using Gridpaper i was better able to illustrate the measurements i require.
    3CE28FE1-4775-4092-9322-C1B32B06D30F.jpeg
     
  11. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    Thanks for the feeback but im actually building the body to sit on a Model A frame as its more rigid and will offer more leg room.
     
  12. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    This measurement is perhaps the most important. Its the distance between the rear crossmember and the middle crossmember, the centre tub fastens to.
    E6A3DFAE-BBB2-4491-BFEA-1F38550835D4.jpeg
     
  13. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    The other important measurent is the distance between the left front corner and right rear corner taken from the inside. This will insure a square frame. B0F5286B-B4D2-4224-BF15-CAA3FF04069B.jpeg
     
  14. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    The overall length taken along the centre.
    10F0B208-373F-44FE-92DB-357AFE6BDBBF.jpeg
     
  15. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    The final one is the width of the middle and second last cross members.
    389E2EE5-5309-4E79-B9F1-DC080BFAFC6D.jpeg
     
  16. randombob
    Joined: Apr 7, 2021
    Posts: 24

    randombob

    Try the below, let me know if I missed the mark. There is pics of the sub frame in the thumbnails, excuse the mess. All measurements in imperial, sorry. 1926 Model T roadster body.

    edit: I'll get overall in a little bit, just noticed that

    PXL_20230109_220650509.MP.jpg
     

    Attached Files:

    Last edited: Jan 9, 2023
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  17. Shadow Creek
    Joined: May 14, 2014
    Posts: 304

    Shadow Creek
    Member

    upload_2023-1-9_20-11-5.jpeg Not sure if this helps or not, I saved this a long time ago
     
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  18. Gofannon
    Joined: Feb 8, 2007
    Posts: 982

    Gofannon
    Member

    Depending on what style build you're aiming at, you might want to consider shortening the deck a little to get shorter wheelbase and better proportions. Also, you don't need a full cowl. Subframes were often cut away or discarded entirely.

    upload_2023-1-10_15-22-34.jpeg

    upload_2023-1-10_15-22-54.jpeg

    upload_2023-1-10_15-28-53.jpeg

    upload_2023-1-10_15-28-30.jpeg
     
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  19. Gofannon
    Joined: Feb 8, 2007
    Posts: 982

    Gofannon
    Member

    Navarro's T

    upload_2023-1-10_16-3-40.jpeg

    upload_2023-1-10_16-4-7.jpeg
     
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  20. chev34ute
    Joined: Nov 13, 2011
    Posts: 1,433

    chev34ute
    Member

    Thanks for that.
     
  21. manyolcars
    Joined: Mar 30, 2001
    Posts: 9,517

    manyolcars

    The subframe shown here is for roadster pickup, not the same as coupe
     
  22. randombob
    Joined: Apr 7, 2021
    Posts: 24

    randombob

    The T mentioned was a roadster, otherwise I wouldn't have jumped in.

    I still owe you overall! 88.5" from front to outside, on a 1926 roadster body.
     
    chev34ute likes this.

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