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Drilling 11" drums with fins????

Discussion in 'Early CJ5 and CJ6 Tech' started by Old Bill, Feb 11, 2006.

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  1. Feb 14, 2006
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
    Joined:
    Sep 20, 2002
    Messages:
    3,437
    Ron, thats what I did. Scribed 3 lines on the outside, drilled my holes on 3 lines, staggered in relation to each other. They work very well. Disc-like performance when dry, and very good when wet.
    I used Postal non-finned new drums.

    The "spiral" across the drum is probably the best thing to do.
    Billy, I didn't realize that you did the spiral... 8)
     
    lynn, Feb 14, 2006
    #21
  2. Feb 15, 2006
    Rondog

    Rondog just hangin' out

    Parker, CO
    Joined:
    Aug 25, 2005
    Messages:
    2,918
    If I had access to a Bridgeport and a dividing head.....but I don't even have a drill press. Can't see trying to do them in a vise.

    Having a machine shop do two rows of holes on straight planes on four drums will be expensive enough, having them do the spiral effect would be outrageous.
     
    Rondog, Feb 15, 2006
    #22
  3. Feb 15, 2006
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
    Joined:
    Sep 20, 2002
    Messages:
    3,437
    I looked at the CH Topping site. It was something like $35/drum, plus shipping 4 heavy drums east coast to west coast and back... :shock:
    I decided if I was going to consider spending that amount, I may as well get something for my $$$ besides holes... ;)
    I bought a 12" benchtop Delta drill press, built a jig from some 2x10 and pipe, drilled them myself for less than Topping would have charged... and have used the drill press for many projects since then! :D
     
    lynn, Feb 15, 2006
    #23
  4. Feb 15, 2006
    Old Bill

    Old Bill Aggressively passive....

    Really Southern...
    Joined:
    Nov 12, 2004
    Messages:
    822
    Ron, if you would be ready to do this in the next month or so, PM me. I may be able to help out....
     
    Old Bill, Feb 15, 2006
    #24
  5. Feb 15, 2006
    vanguard

    vanguard

    Moisture aside, Heat dissipation is more important than venting and that's what the fins are for.
     
    vanguard, Feb 15, 2006
    #25
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