I had a Zin report prepared after a fit a few years ago. In the meantime, I made lots of incremental changes (replaced the saddle, new bars, etc), and got a second Zin report to compare old vs new.
Here's a screenshot comparing the two, side-by-each. My questions:
-how could the frame stack and reach possibly differ across these two reports? And not just by a mm or two ... but by, like, 2cm each? That's like a different frame! I would get it if armpad stack or other things had changed, but frame stack and reach are absolute, aren't they? And these don't really rely on the Zin operator, do they?
-How do I translate this information into "correcting" the rest of the measurements?
Here's a screenshot comparing the two, side-by-each. My questions:
-how could the frame stack and reach possibly differ across these two reports? And not just by a mm or two ... but by, like, 2cm each? That's like a different frame! I would get it if armpad stack or other things had changed, but frame stack and reach are absolute, aren't they? And these don't really rely on the Zin operator, do they?
-How do I translate this information into "correcting" the rest of the measurements?