Originally Posted by
tanguy frame
I made a combination of measurements and calculations to get the chainlines for each cog; from the inner cog out, the chainlines are approximately 6, 11, 16, 21, 26, 31, 36, 41, 46, 51.
you have the big cog 6 mm from the bike's centerline? That can't possibly be right. You couldn't build a wheel that would support that. Your measurements are off by ~20mm I bet