Spoke breakage at thread/nipple junction

daveornee wrote in message ...
John Black Wrote:
Wow, so many good thoughts! Thanks for all the input.

To Carl & Sheldon & Qui si parla campagnolo: The one hole off
theorum... A very good surmise. I thought I remembered that the
Velocity Aerohead OC rim had all spoke holes in a plane. I have taken
a look under the rim tape and all spoke holes do indeed appear on one
plane. Perhaps my sight cannot discern a slight offset for left versus
right side spokes, or an oriented spoke bed, on this rim. If so, this
theory lives.

SNIP?

I took a look at the Velocity Aerohead OCR rims I have.
There is an offset you can see from the side facing toward the bub as
well as the rim tape side.
Not only does the theory live, but it helps explain the problem and
solution.

I built an aerohead oc recently and recall that the holes were indeed
offset\angled alternating left and right, as usual. It may be harder
to discern this via looking underneath the rim strip now that the
wheel is built. Try looking at the spoke hole where the spoke broke
and see if you can tell that the hole is drilled at an angle.