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Tell me why I can't redrill my own axles?

Discussion in 'The Hokey Ass Message Board' started by evintho, Dec 28, 2013.

  1. evintho
    Joined: May 28, 2007
    Posts: 1,704

    evintho
    Member

    Seems pretty simple. 8" Ford rear with Chevy steel wheels. On my floor model drill press I'd lower the table all the way down so I'd have a surface perpendicular to the drill head. Next, I'd build a tall jig outta 1" square tubing to secure the axle to the table. I'd bolt this template to the existing 5 x 4.5" wheel studs, make my marks using the 4.75" holes and drill away! What am I missing here?

    [​IMG]
     
  2. Keep
    Joined: May 10, 2008
    Posts: 662

    Keep
    Member

    There is no reason, there are jigs being sold all over to change the bolt patterns of axles.

    Not sure I would use a plastic ring for a pattern.
     
  3. People have been re drilling axles since guys wanted to change wheels. HRP
     
  4. it will never work, your supposed to pay people a lot of money to do that
     

  5. Keep
    Joined: May 10, 2008
    Posts: 662

    Keep
    Member

    Here are the measurements for the 4.5-4.75 jig
     

    Attached Files:

  6. i recently had this come up when a customer wanted the larger bolt pattern wheel put on his '70 duster. i planned to drill out the axle for the larger pattern but [1] there was the hole, to access the axle flange, that would have had to be welded closed and [2] the larger bolt holes would have been drilled too close to the out side edge. i don't know if you will run into these issues just food for thought.
     
  7. gimpyshotrods
    Joined: May 20, 2009
    Posts: 18,035

    gimpyshotrods
    ALLIANCE MEMBER

    HAMBer Rottenleonard makes nice drill guides, and sells them here. I have a couple, including a custom one he made for me. Good stuff. Super accurate, and well made.
     
  8. 56sedandelivery
    Joined: Nov 21, 2006
    Posts: 6,695

    56sedandelivery
    ALLIANCE MEMBER

    I believe you'll find the "jigs" right here in the classifieds; E-Bay for sure. Butch/56sedandelivery.
     
  9. gimpyshotrods
    Joined: May 20, 2009
    Posts: 18,035

    gimpyshotrods
    ALLIANCE MEMBER

  10. 1946caddy
    Joined: Dec 18, 2013
    Posts: 1,711

    1946caddy
    Member
    from washington

    No problem at all. I've done several. Use a centering punch to get the holes exact.
    Use a large vise and socket or piece of pipe to press in the new studs.
     
  11. That will be the deal breaker on the Ford axle.....
     
  12. R Pope
    Joined: Jan 23, 2006
    Posts: 3,309

    R Pope
    Member

    Be sure you have the right size bit, the wheel stud has to fit just right. I drill a hole in some scrap first to make sure it is a tight fit. The holes in factory axles aren't always a standard size.
     
  13. blowby
    Joined: Dec 27, 2012
    Posts: 7,402

    blowby
    Member
    from Nicasio Ca

    I did it by bolting on a dual pattern wheel and using it for a drill guide.
     
    29EHV8 likes this.
  14. Ruiner
    Joined: May 17, 2004
    Posts: 4,145

    Ruiner
    Member

    There's a reason rottenleonard's drill guide jigs are made with tubing, people...using 1/8" of steel or plastic to keep anything centered or vertical is a crap shoot...don't ever trust a drill press to remain perpendicular unless the thing weighs 700+ pounds and is built like a tank...you do NOT want your wheel studs going into crooked, oblong, or oversized holes...as a machinist and a fabricator, rottenleonard's drill guides are the only thing I would use by hand...I don't know the guy and I don't give a shit if he sells any of them, I just recognize a good idea when I see it...take my opinion for whatever it may be worth, but I'm not risking mine or anyone else's lives by doing a botched wheel stud job because I was too damned cheap to pay someone to do it right or to buy the right wheels...there's enough hacks in the world already...
     
  15. langy
    Joined: Apr 27, 2006
    Posts: 5,735

    langy
    Member Emeritus

    I made a jig years ago out of some 2" thick aluminium, it centres on the driveshaft hub where the drum sits, I fitted the stud holes with hardened tubes, I just clamp in place and drill down, pretty easy to make really.
     
  16. Fugly Too
    Joined: Feb 26, 2012
    Posts: 257

    Fugly Too
    Member

    They ought to give you a medal brother. Most places will drill those 4" bp axles with a clear conscience and if you put any power to them they'll split the outer ring on the axles.
     
  17. H.G. Wells
    Joined: Mar 11, 2006
    Posts: 386

    H.G. Wells
    Member

    Might not be the case with stock axles, but with most aftermarket pieces you will wipe out drill bits on the hardened hub.
     
  18. sunbeam
    Joined: Oct 22, 2010
    Posts: 5,190

    sunbeam
    Member

    Second that I've done it many times. same with brake drums because drums are located off the center hole the stud holes do not have to be as accurate.
     
    Last edited: Dec 29, 2013
  19. evintho
    Joined: May 28, 2007
    Posts: 1,704

    evintho
    Member

    Exactly what I was looking for, opinions and real world experience! Nobody's told me why I can't do it so it looks like I will. I have a 50's Craftsman floor model dp that's very heavy and quite stout that I refurbished.......should do the job. As far as the axle flange access hole, I plan to weld in a machined slug.

    As far as drill bit diameter, I assume you size it to the wheel stud shoulder width and the knurl just locks the stud in?
     
  20. Dan Timberlake
    Joined: Apr 28, 2010
    Posts: 1,307

    Dan Timberlake
    Member

  21. Ruiner
    Joined: May 17, 2004
    Posts: 4,145

    Ruiner
    Member

    A drill press isn't going to hold that sort of tolerance, your best bet is to drill .010 or .012 undersize and buy a reamer...I really want to stress how serious it is to do your wheel studs properly...don't skimp out on safety...

    Posted using the Full Custom H.A.M.B. App!
     
  22. langy
    Joined: Apr 27, 2006
    Posts: 5,735

    langy
    Member Emeritus

    Or tap them for 1/2" fine set screws, If i'm using studs I like to drill and ream to size.
     
  23. These are nice !!! Well worth every penny & come with the drill bits too!
    I drilled a small oiling hole in the drill guide and that made life a lot easier for on car drilling.


    I'd change one thing though, the final hole size requires a 0.625 shoulder on the stud, that's theeee biggest they come and if you should ever have a problem there's not a bigger one to go to. Also need to clearance the big head of those studs for some chevy axles when adding a 4.5 pattern.
     

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