Originally Posted by
ciocc_cat
Too low? Not if you don't race and live in flat to slightly rolling terrain (south Louisiana) where the biggest "hill" is an overpass - like I do. I run 47-41 chainrings with a 13-23 (6-speed freewheel). I don't race anymore and most of my rides are solo training/recreational rides. I typically cruise at 17 mph in my 41/17 (63.6-inch) gear. Unless you live in hilly terrain and/or are a competitive cyclist, then I don't see a need for a 53 tooth ring (unless you just like to look macho).
I missed the touring bike part... I run a 34-50 compact crankset with a 14-25 rear cassette, I don't race yet, but I'm gearing up for it. In my highest gear at a 90 cadence, I'd be going around 26 miles per hour... Too low for a lot of people, but if your on a touring bike I don't see a problem with it.