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11" brake conversion

Discussion in 'Early CJ5 and CJ6 Tech' started by tommy b, Nov 26, 2005.

Page 2 of 2
  1. Nov 30, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    9,221
    Holes in rotors of race cars allow hot gasses to escape, on a street car the difference is negligible at best from my understanding.

    Holes in a drum allow water to escape the drum, I'm guessing it does the same thing with gasses too since the drum is a more enclosed space than a disk brake and is not vented like most rotors are.
     
    sparky, Nov 30, 2005
    #21
  2. Dec 1, 2005
    tommy b

    tommy b Member

    Golden, Colorado
    Joined:
    Oct 23, 2005
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    341
    My boy recently told me that when he used to drive Shaggy through a stream, he would lightly press on the brake pedal to keep the water out of the drums. Seemed to work for him, but I'm still going to drill the 11 inchers 'cause it looks cool and should work better. Ron, Further up this thread you suggested attaching an electric drill to my toolpost. That would work except the drums are too large (by 1/4") to fit my chuck. They hit the ways so I can't clamp them up. I'll keep looking into it and let you know how I finally solve the problem.

    tommy b
     
    tommy b, Dec 1, 2005
    #22
  3. Dec 1, 2005
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
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    Sep 20, 2002
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    3,437
    Tommy, did you see the pic of the jig I made to hold 2 drums back to back, and set up under a drill press?

    I still think Billy's Bridgeport method is the ticket :)

    I used to ride my brakes for awhile after a water crossing. It would dry them out somewhat, but not great.
    The drilled drums are great :)
     
    lynn, Dec 1, 2005
    #23
  4. Dec 1, 2005
    53Flattie

    53Flattie Intigator

    Easley, SC
    Joined:
    Sep 23, 2002
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    855
    I have the mylar template that Lynn made. If you want it, PM your address to me and I'll mail it out.
     
    53Flattie, Dec 1, 2005
    #24
  5. Dec 2, 2005
    tommy b

    tommy b Member

    Golden, Colorado
    Joined:
    Oct 23, 2005
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    No, I missed it. Can you direct me to the posting that shows it? Thanks. I'm looking to build a jig to use my drill press as my lathe is too small.

    tommy b
     
    tommy b, Dec 2, 2005
    #25
  6. Dec 2, 2005
    blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    Portland Tn.
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    Sep 20, 2002
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    Tommy......Look for a used dividing head..Prolly pick one up sheep
     
    blevisay, Dec 2, 2005
    #26
  7. Dec 2, 2005
    blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    Portland Tn.
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    blevisay, Dec 2, 2005
    #27
  8. Dec 2, 2005
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
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    lynn, Dec 2, 2005
    #28
  9. Dec 2, 2005
    tommy b

    tommy b Member

    Golden, Colorado
    Joined:
    Oct 23, 2005
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    Lynn,

    Thanks. The picture helps a lot. The Topping site sure does a good job of explaining the benefits of drum drilling. Now I have to figure out how to design a template (angled metal) for laying out my particular hole pattern.

    tommy b
     
    tommy b, Dec 2, 2005
    #29
  10. Dec 2, 2005
    $ sink

    $ sink Gazillians of posts

    Virginia Bch
    Joined:
    Nov 25, 2004
    Messages:
    1,373
    measure the circumferance of the drum where you want the holes. lay out a piece of masking tape on a clean counter in the kitchen. mark of the number of evenly spaced holes you want on one edge of the tape. wrap the tape around the drum with the marks along the line where you want the holes. place your drums in the jig. start drillin






    rocket science
     
    $ sink, Dec 2, 2005
    #30
  11. Dec 2, 2005
    linckeil

    linckeil Member

    Danbury CT
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    Aug 19, 2004
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    what i'm gonna do when i drill mine is do what is said above, but center punch all the holes first, then double and triple check to make sure they are all evenly spaced.
     
    linckeil, Dec 2, 2005
    #31
  12. Dec 2, 2005
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
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    I center punched all of mine.
    The exact spacing isn't critical to the 3rd decimal place... i'd estimate tolerance on spacing is probably ok within 1/8"... the key is to not change the balance of the drum too much.
    Mine was off a bit on each drum, I just split the difference on the last 2 holes. Had a minor vibe for awhile ... might still be there but don't really notice it.
     
    lynn, Dec 2, 2005
    #32
  13. Dec 5, 2005
    willysnut

    willysnut Banned

    Newnan, Ga.
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    Oct 8, 2003
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    What size holes are you drilling?
     
    willysnut, Dec 5, 2005
    #33
  14. Dec 5, 2005
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
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    I drilled 1/8" holes. Billy did the same, and I believe Tommy said he's going with 1/8" as well.
     
    lynn, Dec 5, 2005
    #34
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