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Technical Rear Model A spring eyes too wide - loose shackle bushings

Discussion in 'Traditional Hot Rods' started by Crotty 32, Apr 16, 2021.

  1. Crotty 32
    Joined: Apr 20, 2020
    Posts: 39

    Crotty 32
    ALLIANCE MEMBER

    I am mocking up my ‘32 roadster project and found that the Speedway 3/4” OD shackle bushings are quite loose inside the So-Cal speed shop Model A rear buggy spring eyes. Quick check on the digital calipers and the ID of the eyes are 0.7715” instead of 0.75”.

    What are the thoughts on a fix? Do I try to heat and hammer the eyes to squeeze them down to an ID of 0.75”? Or should I find a different shackle set up with some bronze bushings that have that wider OD to fit the spring eyes better? Any vendor recommendations?

    Many thanks!

    IMG_6092.JPG


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  2. rusty valley
    Joined: Oct 25, 2014
    Posts: 2,817

    rusty valley
    Member

    I think the first thing i would do is call So Cal and ask why they sell a spring that is not standard size ! If the hole is not round, like squeezing it a bit would fix it, that would be great, but how to do that cold will be a challenge. heat not recommended. Gobs of JB weld?
     
  3. rusty valley
    Joined: Oct 25, 2014
    Posts: 2,817

    rusty valley
    Member

    Easiest would be make some bigger nylon bushings on a lathe
     
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  4. Tman
    Joined: Mar 2, 2001
    Posts: 34,901

    Tman
    ALLIANCE MEMBER

    Those Speedway bushings are junk anyway. A hard unknown plastic. Ask Socal what bushings they prefer.
     
    Last edited: Apr 16, 2021
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  5. Jmountainjr
    Joined: Dec 29, 2006
    Posts: 1,367

    Jmountainjr
    ALLIANCE MEMBER

    So Cal should be able to set up up with a bushing that will work. If not, try Pete & Jakes. If making one, I would use brass. Most likely can find a ready made bushing with a slightly bigger OD and turn down to fit. Maybe McMaster Carr or a spring shop. This is all assuming that the spring eye is fairly round.
     
  6. Oilite bushings. Make your own.
     
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  7. Tman
    Joined: Mar 2, 2001
    Posts: 34,901

    Tman
    ALLIANCE MEMBER

  8. Crotty 32
    Joined: Apr 20, 2020
    Posts: 39

    Crotty 32
    ALLIANCE MEMBER

    So I’ve got an inquiry out to SoCal asking for bushing recommendations for their irregular ID spring eyes. I also searched for a spring shop near me and apparently the oldest in America is in the next town over! Started in 1849 and still going strong - I love that. I may swing by there next week to see what they can do and for how much.

    I’m also looking into Oilite distributors to see if I can purchase something close to what I need and somehow make it fit without a lathe to turn it down on.

    Seems to me that I will be ditching these Speedway nylon shackles and move towards a grease-able shackle set up. Anyone have experience with these from MacsAuto? https://www.macsautoparts.com/1928-...MIuITxiceD8AIVY8qzCh3mWAOgEAQYAiABEgI3QPD_BwE



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  9. Tman
    Joined: Mar 2, 2001
    Posts: 34,901

    Tman
    ALLIANCE MEMBER

    Those are way better than the Speedway ones
     
  10. burl
    Joined: Nov 28, 2007
    Posts: 748

    burl
    Member
    from Minnesota

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  11. sdluck
    Joined: Sep 19, 2006
    Posts: 2,795

    sdluck
    Member

    Try McMaster and Carr
     
  12. Crotty 32
    Joined: Apr 20, 2020
    Posts: 39

    Crotty 32
    ALLIANCE MEMBER

    I’ve never heard of McCaster and Carr - quite a resource and selection. Thanks for that tip. Couldn’t find what I needed there, though.

    Does anyone know the dimensions of the Third Gen Auto shackles? Part #A-5630-KT? The listed dimensions of 6x4x1” do not make any sense to me. I’ll likely pull the trigger on this set up if I’m sure it will fit. Then I’ll head over to the local spring shop to ask them to whip up a spring eye bushing that will fit this oddball OD spring eye for me.

    Thanks all for the help.


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  13. jimvette59
    Joined: Apr 28, 2008
    Posts: 887

    jimvette59
    Member

    Try googling Bunting Bronze I used them years ago to order oillite bronze.
     
  14. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 5,597

    Ebbsspeed
    ALLIANCE MEMBER

    Have any of you made shackle bushings out of Delrin/Acetal? I've turned out a lot of motorcycle chain tensioner idlers with it, and it seems to be a pretty good candidate for shackle bushings too. Harder than a whore's heart, works easily on the lathe.
     
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  15. butch27
    Joined: Dec 10, 2004
    Posts: 2,848

    butch27
    Member

    My rear ones are made of Delrin--- no trouble
     
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  16. bchctybob
    Joined: Sep 18, 2011
    Posts: 3,248

    bchctybob
    ALLIANCE MEMBER

    I’m using the stock type spring eye bushings on my roadster like the ones from Mac’s or Snyder’s. I could measure one for you and get back with the OD?
    EDIT: The bushings from Snyder's measure 0.755" O.D. No help with your problem.


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    Last edited: Apr 17, 2021
  17. Tman
    Joined: Mar 2, 2001
    Posts: 34,901

    Tman
    ALLIANCE MEMBER

  18. Illustrious Hector
    Joined: Jun 15, 2020
    Posts: 148

    Illustrious Hector
    Member
    from Alberta

    Limeworks in California used to sell oilight bushings
     
  19. Crotty 32
    Joined: Apr 20, 2020
    Posts: 39

    Crotty 32
    ALLIANCE MEMBER

    Thanks for checking for me


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  20. Crotty 32
    Joined: Apr 20, 2020
    Posts: 39

    Crotty 32
    ALLIANCE MEMBER

    Oilite could be the way to go for me. I may also need to invest in a lathe or a friend with one to turn these down to a snug fit inside this wacky ID spring eye size


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  21. krylon32
    Joined: Jan 29, 2006
    Posts: 7,494

    krylon32
    Alliance Vendor
    from Nebraska

    P&J's does offer a 2.25 wide X 7/8th OD urethane rear spring bushing
     
  22. dirt car
    Joined: Jun 26, 2010
    Posts: 282

    dirt car
    Member
    from nebraska

    Speedway Motors lists 3/4" bronze bushings on page 5 of the most recent catalog part # 910 33329 designed for the 2-1/4" shackles however, could probably be trimmed for 2" or 1-3/4" as needed.
     

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