More bicycle tinkering. I swapped rear cogs around to give both SS bikes a 2:1 ratio (34:17 and 36:18). Test rides confirmed my hunch; a bit more effort on climbs and a lot less spinning out on flats. While I was at it, I went ahead and installed a DMR chain tensioner that I had on hand on Big Red. Unfortunately, the metal piece that the skewer goes through won't fit in my dropouts, so the tensioner is just bolted tightly (with Loctite) on my derailleur hanger. I'll carry the spare chainring with me in case I need it in a pinch as a ghost ring. If you look closely at Big Red, you'll see my bodged cog arrangement. I used almost all of my SS hub spacers on the Crossroads build, so to make up the difference, I took apart an old cassette and used a couple of the spacers and the two smallest cogs. Works a treat!