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Thread: rear hub issue on my U model

  1. #1
    Join Date
    May 2012
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    London. UK
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    9

    Default rear hub issue on my U model

    I have a '46 U model and when I ease on the rear brake I get an on-off-on type action. I guess the brake hub is warped out of shape or has a high spot. Sounds possible or am I missing something more obvious?
    I have known old cars to have warped hubs along with the same issues. Anyone have experience of this?

  2. #2
    Join Date
    Sep 2007
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    Jersey City
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    Try relining the shoe before ya hang the brake drum. Bob L

  3. #3
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    May 2012
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    London. UK
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    I've just pulled the rear wheel and hub off. Here's what I found. New hub and shoes but don't like the look of the backplate.






  4. #4
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    May 2012
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    Looks like the hub is out of true. What does anyone think?





    I assembled the brake in the wheel and clamped the spindle in a vice. When I spun it you can feel a tight spot just the same as on the bike.
    I then applied a dust of matt black spray paint onto the hub surface and when spun again the brake lining took the paint off in the exact area where the marks are.
    This I'd say is proof the hub is out of true so I'm going for a new one. Any thoughts?

  5. #5
    Join Date
    Jul 2011
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    189

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    Hello could be the rewelded center on the 1st picture /or possibly the repop brake shoes also looks like the wrong brake springs. looks like a coobled together assemby

  6. #6
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    First off the brake drum and shoes are after market but no big deal. The problem comes in to play with the backing plate. In order for that item to fatigue and crack it had to be moving in and out. By the look of the brake drum it's not tracking straight. Unless the guy that welded it up made sure it was 100% flat you will end up with the problem your having. I have an extra backing plate here if your interested. Bob L

  7. #7
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    May 2012
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    Thanks diesel.
    I'm with you on not liking the re-welded parts. Maybe a whole new rear brake set up wouldn't be a bad thing! Might start with a hub first and see how it goes.
    I don't think you could warp one especially when you think of the amount of heat needed. More like it was warped from new. Could just be a poorly made hub? Anyone heard of this before with re-manufactured hubs?

  8. #8
    Join Date
    Aug 2004
    Location
    Beautiful Northern New Mexico
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    1,420

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    Tip number one,
    Do not confuse a hub with a brake drum. Two different animals, and mixing terminology will get you more confusing info than you need!
    The center of the wheel is the hub. The brake outer housing is a drum.
    Yours is made up of a bunch of mismatched reworked parts, so getting a good brake action will be difficult at best. Check the drum for roundness, the shoes for concentricity, the backing plate for flatness and parallelism, and you will find your problem!
    Robbie
    Rubone Amca #2736

  9. #9
    Join Date
    Jul 2011
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    189

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    Sorry to be frank Bob the repo crap has a lot to do with this mans problem.if the rest of the parts involved are any thing at all like the pictures i see hub/drum/ shoes face plate and hardware .he has a major problem

  10. #10
    Join Date
    May 2012
    Location
    London. UK
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    Sorry for the wrong terminology, that's crossing over with car stuff and I'm British!
    Thanks for everyone's input. I'll do those checks.

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