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1929 AA Bevel Gear Rear End

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  • 1929 AA Bevel Gear Rear End

    While on Junk Jaunt over the weekend I ran onto a 1929 AA bevel gear rear end for sale. I know you don't see very many of these and I have always wondered why. Were they that bad? I know they were only used for a short time between the worm drive and the more common 30-31 AA rear end. Also was wondering how sellable it might be. Told the guy to let me know if he did not sell it. So I may get a call about it later this week. Rod
    "Much of the social history of the Western world, over the past three decades, has been a history of replacing what worked with what sounded good." Thomas Sowell

  • #2
    This is from Neil Wilson, maybe he knows why it was dropped so fast.

    Bevel Gear Type Rear Axle 1928-1929

    late 1928 through early 1929.

    The July 24, 1929 Indianapolis service letters announced that the differential housing with “HS” for high speed and “LS” for low speed axle was being used for gear ratio identification. There was no indication as to where on the housing the stamping was located.



    • #3
      Thanks Bob. Will email Neil and see if he has some insight. Only the 3rd one I have seen in 30 plus years in the hobby. I won't say that I would have even noticed during the first 10 years. None of them were still attached to their chassis, which seems somewhat telling. One of the other ones I seen belongs to my second cousin and is laying in the grass next to his corn field. Belonged to my Great Grandpa. Rod
      "Much of the social history of the Western world, over the past three decades, has been a history of replacing what worked with what sounded good." Thomas Sowell


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