Originally Posted by
ken_matthews
KRANZ, your comment above concurs with Sheldon Brown's site stating 26tpi threads. How would I measure the width? I've seen measurements for ex. 70mm or 74mm and wondering how to take that msrmt. Is that measuring the width of BB of frame only (not including lock ring, etc.)?
Off the top of my head, I'd say it is the distance from the centerline of the bike to the point midway between the two chain rings.