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Bubb-a-lign

Discussion in 'The Tool Shed' started by Jeepenstein, Jul 26, 2023.

  1. Jul 26, 2023
    Jeepenstein

    Jeepenstein Me like Jeep..

    North Central FL
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    So what you see there is the patent not pending Bubb-A-lign toe in tool.. Yep, 3/4 sch. 40 PVC and a piece of all thread and a nut..

    I didn't go full Bubba though, I did use my lathe to square the ends of the PVC and crown the head of the all thread for accuracy.. Then measured it with a tape measure haha.. Anyhow, it worked like a champ and reset the toe on my son's XJ (after a 3" lift) in minutes an with a fair degree of accuracy.. Just think of it as a 54" ID micrometer. I measured from the ground up 12", marked the rim just inside the bead and measured front and back. Adjust and repeat as necessary to get 1/16" smaller in front than back. I was shocked at my initial measurement, how far off it was. Drives great now though! Since this worked so well I'm going to improve this a bit for universal use.

    Oh and don't mind the green XJ in the background that appears to be a hovercraft.. I stole the 3" suspension from my 98 for the 99 you see and I am going to put a new 4.5" on the 98..

    [​IMG]
    [​IMG]
    [​IMG]
     
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  2. Jul 26, 2023
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    Well sure, if you want to do it the *hard* way... :whistle:

    toe-in_adjustment_20230719_191730.jpg

    toe-in_adjustment_20230719_191721.jpg

    toe-in_adjustment_20230719_191714.jpg

    :twist:
     
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  3. Jul 26, 2023
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    Unknown-1.jpeg
    Measure to the inside of the rims, fore and aft.
     
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  4. Jul 26, 2023
    Jeepenstein

    Jeepenstein Me like Jeep..

    North Central FL
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    Leave it to me to overthink some $h1t.. Haha.. I dig the foldy stick with the slide on it, never seen one with the slidey part..
     
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  5. Jul 26, 2023
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    Your pictures don't show for me, but curious what you came up with.
     
  6. Jul 26, 2023
    danielbuck

    danielbuck Uncle Buck

    USA
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    I have 2 3' long pieces of 2" aluminum angle that I keep set aside for this, and usually clamp to the brake rotors/drums and use tape measures like Howard showed.
     
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  7. Jul 27, 2023
    Jeepenstein

    Jeepenstein Me like Jeep..

    North Central FL
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  8. Jul 27, 2023
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    Cool.

    In my collection I actually have an alignment measuring tool made of wood - it came from a blacksmith's shop and was used for setting toe-in on horse drawn wagon axles.
     
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  9. Jul 27, 2023
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    :pics:
     
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  10. Jul 28, 2023
    Jeepenstein

    Jeepenstein Me like Jeep..

    North Central FL
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    Funny, I was actually going to the shop to make one from wood when I tripped over the PVC and had the aha moment..
     
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  11. Jul 29, 2023
    wheelie

    wheelie beeg dummy 2024 Sponsor 2023 Sponsor

    York, PA
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    Hmmm. Maybe I’m the village idiot then. I made up a device out of crap I had laying around. It’s about a 6x8 plate of maybe 1/2 steel with some like 1/4 rod welded to it. The rod holds an old metal pointer thingy that has a thumb screw on it so I can move it left to right for different size tires.
    I make a paint line around the circumference of each tire then set the pointer up against the center of each tire and spin the tire to create a light scribe line to measure at the front and back of the tires.
    It seems to work pretty well
     
  12. Jul 29, 2023
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    Just as aside - back in the Dark Ages, I was told that measuring at the front and back was not good enough. The One True Way was to measure a spot on the rim, then roll the vehicle forward a half-turn and measure again at the same point on the rim. This to eliminate variabilities in the tire and/or rim.

    A similar tweak was to spin the wheels and scribe a centerline on each tire, measure to that.
     
  13. Jul 30, 2023
    Jeepenstein

    Jeepenstein Me like Jeep..

    North Central FL
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    I can see where that would be "better" but I would venture that most modern wheels don't have enough runout in them to make that necessary. I can certainly see on older stuff that would be a thing.
     
  14. Jul 30, 2023
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    Not so sure. A friend bought new set of wheels, and they were so bad the tire shop refused to put rubber on them.
     
  15. Jul 30, 2023
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    That's why I went with my setup, they're 6" DWV pipe caps that I milled flat spots on the ends. My theory is the the area at the lug nut's is about the only place that's guaranteed to be flat the the hubs.
     
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