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Technical Spline Cutting (Moser says no)

Discussion in 'Traditional Hot Rods' started by JT1930, Mar 18, 2019.

  1. JT1930
    Joined: Jul 1, 2018
    Posts: 120

    JT1930
    Member

    HAMB’ers who else does spline cutting. I need my f150 trans main shaft turned and milled to my Model A 6 spline. Moser engineering told me they can’t do this but others have had it done by them in the past.


    8F3338BC-0C4F-4BB9-AE08-434D3BD88840.jpeg A893D0EC-3846-46F6-B0F6-93D6FD071657.jpeg
     
  2. Mr48chev
    Joined: Dec 28, 2007
    Posts: 24,590

    Mr48chev
    ALLIANCE MEMBER

    The shaft may be hardened to the point where it isn't productive to turn it down and machine new splines. I've seen a few pieces off industrial equipmemt that were that way when I sent them in to be worked on and the shop said that the steel had been hardened to the point that they couldn't machine it.

    If it is just something they don't want to deal with though a good job shop machine shop should be able to handle it.
     
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  3. JT1930
    Joined: Jul 1, 2018
    Posts: 120

    JT1930
    Member

    Mr 48. I see. I’m going to a industrial machine shop today and see what they can do. They’ll be turning my model A flywheel down so I’ll give them a try.
     
  4. Mr48chev
    Joined: Dec 28, 2007
    Posts: 24,590

    Mr48chev
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    It should be pretty much standard procedure if the shaft is machineable.
     
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  5. Beanscoot
    Joined: May 14, 2008
    Posts: 883

    Beanscoot
    Member

    When I worked at a transmission shop I learnt the "trick" of roughly removing the hardened surface of the shaft with an angle grinder while the shaft turned slowly in the lathe, then machining.
    I think it was on a TH400 shaft though, maybe the Ford is through hardened?
     
  6. burl
    Joined: Nov 28, 2007
    Posts: 548

    burl
    Member
    from Minnesota

    Depends on how hard it is.We machine materials up to about 60 rc.Not sure if that piece is hardened through or just case hardened.Makes big difference.Theres ways to machine harder material like edm and grinding we do that as well.
     
  7. JT1930
    Joined: Jul 1, 2018
    Posts: 120

    JT1930
    Member

    Thanks for the info everyone.

    I did cut it with a cut off wheel and it went fairly easy.
     
  8. F&J
    Joined: Apr 5, 2007
    Posts: 13,135

    F&J
    ALLIANCE MEMBER

    have you run a hand file on that cut ?
    .
     
  9. JT1930
    Joined: Jul 1, 2018
    Posts: 120

    JT1930
    Member

    F&J no but I can when I get home.
     
  10. big john d
    Joined: Nov 24, 2011
    Posts: 66

    big john d
    Member
    from ma

    i have had axles resplined at mitchel drivetrain service on rt 20 off 146 in ma very happy with the end result 15087546502
     
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  11. F&J
    Joined: Apr 5, 2007
    Posts: 13,135

    F&J
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    Or if you still have the scrap piece you cut off, try drilling a 3/16 or 1/4 hole in the center of the cut?
     
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  12. Try JDM Machine in Staples, Minnesota.

    They just cut some tapered internal splines in a pitman arm for a bus (48' Motor Coach, actually) application for the company I work for. I know they also do external splines. They did a very good job.
     
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  13. Cyclone Kevin
    Joined: Apr 15, 2002
    Posts: 3,808

    Cyclone Kevin
    Alliance Vendor

    Cook’s Machine Works, Los Angeles... been doing it for 80 yrs, call Paul or Jim....they could help you out.
    323-268-6571.
     
    Last edited: Mar 18, 2019
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  14. Big John D gave you a good source, and it is not that far from you.
     
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  15. dreracecar
    Joined: Aug 27, 2009
    Posts: 2,691

    dreracecar
    Member
    from so-cal

    You mean "COOK's"
     
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  16. Atwater Mike
    Joined: May 31, 2002
    Posts: 9,265

    Atwater Mike
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    Good machine shop has tooling and tool speed to overcome hard metals...
    Old machine shop had broaching machines and were restricted to some Rockwell bumps.
     
  17. Cyclone Kevin
    Joined: Apr 15, 2002
    Posts: 3,808

    Cyclone Kevin
    Alliance Vendor

    Sorry, Fixed it.....Fat thumbs :).
     
  18. JT1930
    Joined: Jul 1, 2018
    Posts: 120

    JT1930
    Member

    I’d say it’s case hardened. I can drill the inside of the shaft. The outside is a bit harder.
     
    F&J likes this.

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