Well, I not about to argue with my own original statement that there are multiple ways to accomplish the goal. I had to sketch out FB's method to understand it (I think). I've done a rough representation below. The advantage is that it requires no special tools. The disadvantage is that it relies on multiple measurements that are difficult to make accurately, one of which is multiplied significantly. I ran some rough figures, and a mere 1mm difference in measurement B alone makes for over a 2.5 mm difference in calculated rake.
Last edited by cny-bikeman; 02-16-18 at 06:14 PM.
Reason: Corrected to add 1/2 of fork column diameter