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Thread: Designing bevel gears

  1. #21

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    Thanks for all the suggestions.
    I do have Law's and a Lindsay reprint of Colvin and Stanley books.
    I'll try a steel pinion and Micarta / linen-cotton phenolic crown.
    Now to source the Micarta at an affordable price!

  2. #22
    Join Date
    Oct 2013
    Location
    USA MD 21030
    Posts
    4,468

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    A riding lawn mower differential might be useful:





    The angle grinder is another option, as mentioned above. This is from a cheap 4-1/2" grinder:




  3. #23
    Join Date
    Sep 2006
    Location
    Big Prairie Mi.
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    2,298

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    What is that mower differential from?

  4. #24
    Join Date
    Oct 2013
    Location
    USA MD 21030
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    An old Craftsman riding mower that had been converted to a go-cart, and I have been using it for an electric tractor project.








  5. #25
    Join Date
    Mar 2010
    Location
    New England
    Posts
    1,138

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    Might be something useful in Gear Technology magazine; online access is free:


    https://www.geartechnology.com/

    Issue index
    https://www.geartechnology.com/issues/

    Subject index
    https://www.geartechnology.com/issues/subject_index.php

  6. #26
    Join Date
    Jan 2016
    Posts
    111

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    Shaft drive motorcycle gear boxes have gears of approximately 2 and 7", 2-3:1 ratio.

    somewhere i have my brother's it runs.. backwards just fine. was run for thousands of miles without any lubrication in it. he bought a new unit for about $300 but it looks like you can find used ones on ebay for under $100.

    here is one for example
    https://www.ebay.com/itm/81-82-83-YA...M/302522751513
    Last edited by johansen; 09-16-2018 at 06:22 PM.

  7. #27
    Join Date
    Sep 2006
    Location
    Big Prairie Mi.
    Posts
    2,298

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    Quote Originally Posted by PStechPaul View Post
    An old Craftsman riding mower that had been converted to a go-cart, and I have been using it for an electric tractor project.







    Hmmm, I'll need to keep an eye open for that style mower, I have a few projects where a compact differential like that would work out.

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