double shifts between your 2 favorite ratios gets old soon enough..
triples have a smaller 3rd chainring* .. My touring rigs used a 50,40,24t
*doubles common now are limited by the bolt circle to 34t.
corrected 50- 34
back when freewheels were 13t I built a 52-36 double .. or so.
Last edited by fietsbob; 12-19-13 at 01:29 AM.