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  1. #1

    Join Date
    May 2016
    Posts
    3

    Default Centerline Wheel Info & Help

    Picked up a Centerline 16x3 wheel with 3/4 sealed bearings for use on an 04 Softail chop I'm kicking around.

    It has the typical 00-up large center bore for the rotor and pulley, and standard 5 on 3.25" bolt pattern, but the hubs are threaded for 5/16-18.

    Anybody ever deal with this?

    Seems like the pulley side should be 7/16-14 and the rotor side 3/8-16. Are these actually front wheels? Any issue with drilling and tapping to the appropriate sizes?

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    Last edited by gwhite; 11-26-2021 at 6:59 PM.

  2. #2

    Join Date
    Mar 2015
    Posts
    149

    Default

    When I built my rigid, picked up a dual flange hub and laced a 4 inch rim to it, turned out to be a front, drilled and tapped the sprocket side but just used a front rotor on the other side.

  3. #3

    Join Date
    May 2016
    Posts
    3

    Default

    Quote Originally Posted by 1954bmw View Post
    When I built my rigid, picked up a dual flange hub and laced a 4 inch rim to it, turned out to be a front, drilled and tapped the sprocket side but just used a front rotor on the other side.
    Right on! The puzzling thing is that it has the proper offset for the softail rear - it measures 1.402 from the bolt surface to the rim shoulder, dead nuts in the middle of the 04 service manuals spec of 1.392-1.412" offset. Front 16" wheels are specd at 1.272-1.292" offset)

  4. #4
    Senior Member

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    Join Date
    Jan 2018
    Posts
    157

    Default

    7/16"-14 tap drill is .366"
    3/8" is already .375" on major diameter.

    3/8"-16 tap drill is .312"
    5/16" is .312"

    I would only chance the 3/8" up grade.

    So, my answer is don't do it.


    Major diameter minus one over the pitch equals tap drill size.
    e.g. .4375" - 1/14", or .437" - .071" = tap drill size of .366".
    IMO, losing .009" is too much.
    Tap drill formula equates to 78% thread interference as it is.
    Last edited by 10scDust; 11-27-2021 at 6:55 AM.

  5. #5

    Join Date
    May 2016
    Posts
    3

    Default

    This wheel is tapped 5/16-18.

    It NEEDS to be 3/8-16 on the rotor side and 7/16-14 on the pulley

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