Late? Centerline wheel help

[gwhite]

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?

[1954bmw]

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.

[gwhite]

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)

[10scDust]

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.

[gwhite]

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