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Rigid Frame Transmission

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  • Rigid Frame Transmission

    Hi, I am a new member and this is my first post. I have a '38 chief frame and I am putting a '48 motor in it. As I understand it I need to change the transmission main shaft and the driver gear. I believe the parts are longer for a rigid frame chief. I have some parts that are useable but I am unsure if they are for a rigid or sprung frame. Does anyone have the parts for a rigid frame Chief that they can measure the length of and let me know so I can see if what I got will work. Thanks

  • #2
    Originally posted by Jimmy D View Post
    Hi, I am a new member and this is my first post. I have a '38 chief frame and I am putting a '48 motor in it. As I understand it I need to change the transmission main shaft and the driver gear. I believe the parts are longer for a rigid frame chief. I have some parts that are useable but I am unsure if they are for a rigid or sprung frame. Does anyone have the parts for a rigid frame Chief that they can measure the length of and let me know so I can see if what I got will work. Thanks
    The drive shaft and driver gear are shorter for a rigid frame. I can measure after the weekend if needed.You also need a ridged inner primary cover with straight rather than angled chain adjuster.
    And you will need to fabricate a belt cover when you put generator behind seat post,or else let belt run uncovered.
    Tom

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    • #3
      Originally posted by tfburke3 View Post
      The drive shaft and driver gear are shorter for a rigid frame. I can measure after the weekend if needed.You also need a ridged inner primary cover with straight rather than angled chain adjuster.
      And you will need to fabricate a belt cover when you put generator behind seat post,or else let belt run uncovered.
      Tom
      I measured what I got the drive shafts are 10 7/8" long, all the same lengths. I suspect for later Chief.
      The Driver gears are 2 1/4", 2 5/8" and I got one at 2 7/8" long but it is missing a tooth. I suspect the 2 1/4" for rigid frame and 2 5/8" for late Chief. And yes I have a early primary for rigid frame, I was hoping that a later model belt guard will work.

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      • #4
        Check out Jerrygreerindian web site.He has diagrams with dimensions that help identify the various different year Indian parts 36-53.
        Tom

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        • #5
          Yes Greers had good parts drawings. Helped a lot, thanks.

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