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Technical To drill or not to drill.

Discussion in 'Traditional Hot Rods' started by reekie6, Oct 17, 2019.

  1. speedshifter
    Joined: Mar 3, 2008
    Posts: 230


    I have a hard time understanding how holes raise the vertical yield point. Hope engineers comment on this. Greg
  2. gimpyshotrods
    Joined: May 20, 2009
    Posts: 17,898


    I wasn't there, but let me know if:

    Every hot rod built made it into a magazine, and you saw every single magazine.
    kidcampbell71 likes this.
  3. lippy
    Joined: Sep 27, 2006
    Posts: 5,162

    from Ks

    I had a factory 1928 Harley davidson and the rods were drilled. Use to see a bunch of carved out ford axles on old dragsters.But they were super light on the front . Lippy
    kidcampbell71 likes this.
  4. Deuce Daddy Don
    Joined: Apr 27, 2008
    Posts: 5,024

    Deuce Daddy Don

  5. Lighten the load baby !

    Bandit Billy and kidcampbell71 like this.
  6. -Brent-
    Joined: Nov 20, 2006
    Posts: 5,897


    The "Life of Riley" Roadster, which became the McMullen Roadster, had a drilled, dropped, and chromed axle (and drilled split bones). It was photographed/documented in 1956.

    Here's a thread on that.

    But to your question, if you want an "authentic" 50's hot rod, there's a lot more to get right. Drilled or not is a matter of personal taste.
    kidcampbell71 likes this.
  7. Barrelnose pickup
    Joined: Aug 20, 2008
    Posts: 1,206

    Barrelnose pickup

    You beat me to it, not a lot of axle left there!
    swade41 likes this.
  8. Road Angels
    Joined: Mar 2, 2015
    Posts: 125

    Road Angels

    F-1 axle, chassis engineering axles, and some other after market forged units, drill them they are really strong and weigh more than twice that of the factory 30's and early 40's smiley axles witch are really light..ok for show but for go I would not do it for the street...most city and towns roads suck big time...I do love the truck has over 70 holes drilled in it that are 1-1/2" and bigger
  9. Stock Racer
    Joined: Feb 28, 2010
    Posts: 679

    Stock Racer

    I prefer drilled and it's all about the look. IMG_0599.JPG
    akoutlaw and dirty old man like this.
  10. 1971BB427
    Joined: Mar 6, 2010
    Posts: 6,089

    from Oregon

    I beam type axles just beg to be drilled! I've never put one under any car I built without drilling it first! It just takes a plain I beam to the next level, and really doesn't weaken it if you do so correctly, and properly sized and spaced.
    dirty old man and Stock Racer like this.
  11. Bullit68
    Joined: Sep 16, 2009
    Posts: 113

    from Verona, PA

    There really isn’t much “load” between the kingpins at all. The center of the axle is just keeping the spindles straight. You can drill the shit out of it.
    Legal disclaimer: so I’ve been told....
  12. ekimneirbo
    Joined: Apr 29, 2017
    Posts: 1,629

    from Brooks Ky

    Yes,you do!
  13. Vic Walter
    Joined: Jan 21, 2018
    Posts: 95

    Vic Walter

    This thread reminds me of that episode of American Hot Rod where Boyd and Blue Bear went toe to toe on the question.

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