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Axle Size

Discussion in 'Flat Fender Tech' started by auto_guy, Mar 24, 2010.

  1. Mar 24, 2010
    auto_guy

    auto_guy Member

    Joined:
    Jan 11, 2009
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    58
    I am looking for the size for the axle tubes. Front and rear. Mine is a 51 flatty.
     
    auto_guy, Mar 24, 2010
    #1
  2. Mar 24, 2010
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Do you have a tape measure?

    Not to be rude, just wondering why you don't measure?
     
    Patrick, Mar 24, 2010
    #2
  3. Mar 24, 2010
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    You can make a cheesy caliper with two sticks and a nail (or a nut and bolt). Set the caliper to the tube size and measure the distance with your tape.
     
    timgr, Mar 24, 2010
    #3
  4. Mar 24, 2010
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    Sep 23, 2002
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    If you have the stock Dana 41 or tapered axle 44 that should be 2 1/2" diameter tube. Don't remember on the front.
     
    nickmil, Mar 24, 2010
    #4
  5. Mar 24, 2010
    duffer

    duffer Rodent Power

    Bozeman, MT
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    Front will be 2.5" also if stock
     
    duffer, Mar 24, 2010
    #5
  6. Mar 24, 2010
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Dana 25/27 is 2 1/8".

    I just measured.
     
    Patrick, Mar 24, 2010
    #6
  7. Mar 24, 2010
    duffer

    duffer Rodent Power

    Bozeman, MT
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    I stand corrected, but the tube on the 25 in the 3B measures 2.258 over the paint, so I am assuming it is 2.250 od tube.
     
    duffer, Mar 24, 2010
    #7
  8. Mar 24, 2010
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    OK, so I measured more carefully, both the 25 and both 27's, and it's 2 1/4"..:D
     
    Patrick, Mar 24, 2010
    #8
  9. Mar 24, 2010
    auto_guy

    auto_guy Member

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    Sorry guys i cant measure it. Im on a business trip. Its boring in the hotel room so i figured i would order some parts for my little project i got going. Looks like i need some perches for 2.25 axle for 2.50 springs. That sounds like an odd size to find.
     
    auto_guy, Mar 24, 2010
    #9
  10. Mar 24, 2010
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    2 1/2" rear tube, 2 1/4" front tube.

    You're swapping in 2 1/2" springs?
     
    Patrick, Mar 24, 2010
    #10
  11. Mar 24, 2010
    auto_guy

    auto_guy Member

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    Jan 11, 2009
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    Yes i am.
     
    auto_guy, Mar 24, 2010
    #11
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