Originally Posted by tanguy frame
I use the caliper technique, measuring inside to inside. I found that the unstretched dimension over 10 links (10? 11?) is 5.2 inch. I found this by measuring the diameter of the rollers new (0.3 inch), and offseting the pitch by the diameter (5.5 inch minus .3 inch = 5.2 inch.
I think I'm doing essentially what you did. I took a brand new chain and found that x no of links (I don't remember the no) was 106.5mm and adding the calculated stretch limit of .55mm, the wear limit of a used chain is 107.05mm. My road bike was at 106.9 and my mountain bike at 107.7(!). So I put the road bike chain on the mountain bike and the new one on the road bike. I was surprised the mountain bike didn't jump, not even the smallest cog.