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Technical brakes

Discussion in 'The Hokey Ass Message Board' started by Huckster59, Feb 16, 2023.

  1. Kerrynzl
    Joined: Jun 20, 2010
    Posts: 3,508

    Kerrynzl
    Member

    Clean the inside surfaces with a "rotary flap wheel"
     
  2. Huckster59
    Joined: Aug 21, 2008
    Posts: 556

    Huckster59
    Member

    can you turn the stock drums?
     
  3. Kerrynzl
    Joined: Jun 20, 2010
    Posts: 3,508

    Kerrynzl
    Member

    yes!
    You get uneven friction surfaces etc from when parked for extended times
    It feels like the drums are oval shaped [and pulse]. but is actually an uneven co-efficient of friction

    Sanding the shoes also helps.
     
  4. alchemy
    Joined: Sep 27, 2002
    Posts: 22,049

    alchemy
    Member

    Sure you can have the hub/drum assemblies turned. Don’t try taking the drums off the hubs. Tell the tech to take it easy on them as they don’t make them any more. Some like to take a deep cut, which you don’t want.
     
  5. aussie57wag
    Joined: Jul 13, 2011
    Posts: 673

    aussie57wag
    Member
    from australia

    I'd consider just fitting a vacuum power booster on the drums. If your not doing a lot of towing and mountain driving the power boosted drums will be more than adequate for a cruiser. It will also be a lot cheaper and easier
     
  6. Huckster59
    Joined: Aug 21, 2008
    Posts: 556

    Huckster59
    Member

    well it sat for twenty years i’ll try to clean up before i take them to shop and turn them. thought about disc but i have 14” slots. don’t think the disc fit the 14”.
     
  7. 1971BB427
    Joined: Mar 6, 2010
    Posts: 9,540

    1971BB427
    Member
    from Oregon

    If he might have uneven surfaces now, he damn sure will using a flapper wheel to clean the drum! Nothing more than emery paper by hand should be used on drum brake surfaces. I'd take the drums to a shop that can check them for trueness, and can do a slight drum turning if needed.
     
    coast40 likes this.
  8. Kerrynzl
    Joined: Jun 20, 2010
    Posts: 3,508

    Kerrynzl
    Member

    PBR VH44

    I've never had an issue using a flap wheel in a cordless drill. [or using a flap disc on brake rotors] but this doesn't account for the incompetence of the user.
    If an idiot wants to spot reduce some rust he will cause problems

    @Huckster59 give them a good cleanup with a flap wheel in a cordless drill [don't lean on it, and keep it moving]
    If you need the drums machined, you will need oversized matching shoes.

    Do the DIY part first, before taking it to a brake machinist. Brakes don't go out of true while parked [it takes heat cycles]
    The flap disc is a trackside repair I've done that has been very successful
    once I got my wife to spin the rotor while I took to it with a flap disc in a 4" grinder. Then the caliper is re-installed and back on the track again [up to 170mph]
    This ^^^ was caused by debris picking up in the rotor.
     
  9. Even Wikipedia says you need to take a deep breath and try again.

     
  10. poco
    Joined: Feb 9, 2009
    Posts: 1,562

    poco
    Member
    from oklahoma

    If you go with disc do no use speedway, i had to modify brackets to get them to work and they make the front 2 inches wider.
     
  11. Huckster59
    Joined: Aug 21, 2008
    Posts: 556

    Huckster59
    Member

    i have been saving for wilwood
     
    gimpyshotrods likes this.
  12. Pete1
    Joined: Aug 23, 2004
    Posts: 2,261

    Pete1
    Member
    from Wa.

    You can't go wrong there.
     
    gimpyshotrods likes this.
  13. Huckster59
    Joined: Aug 21, 2008
    Posts: 556

    Huckster59
    Member

  14. disc brakes and dual system master cylinders are some of the few parts permitted regardless of the pre 65 rules
     
  15. Huckster59
    Joined: Aug 21, 2008
    Posts: 556

    Huckster59
    Member

    Backs done. New springs. No to tackle the front again. ;)
     

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    coast40 likes this.

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