Originally Posted by rpenmanparker

Took me a while to find it, but I finally did. Here is a page that shows the IRD offset to be only 1.5 mm. I don't know the validity of this publication, but taht rings a bell regarding what I remembered from previously investigating this question. The Velocity Aerohead OC has 4.0 mm offset, significantly more.

http://leonard.io/edd/rim/361-ird-ca...metry-rim-700c