Originally Posted by
Barrettscv
Hi,
I would reconsider the small chainring and cassette.
Most touring cyclist travel use the 30 to 80 gear-inch range for all but the steepest climbs and decents. This covers the 8-20 mph speed range @ 85rpm.
The 12-27 with a 48,36 & 22t chainring set offers a tighter set of combinations in the range, without sacrificing climbing range.
I'd agree with going to a 22 inner but there's really no reason for going to a 12-27 cassette. The closer ratios don't really gain anything while a lower gear is far more helpful when climbing. You may not use a 22/32 (or 22/34) all the time but when you need to use it, you need it.