Originally Posted by james_swift
I only put that info out there 'cuz I was lazy to do the research. Here's the actual dirt on the Shimano UN-series:
103mm: symmetrical
107mm: symmetrical
110mm: asymmetrical, non-drive side 3mm longer
ah I wondered what you were up to.
hey I forget to mention that based on your advice (IIRC) I asked for a Dura Ace or other quieter 14T 3/32" cog instead of the Surly cog.
Realizing I havent broken any new ground here but am standing in the footprints of others, my thanks to you and all who are being so helpful.