42/16 would be 70.9 gear inches, 42/13 would be 87.2.
Now I am not really in a position to talk having run 49/15 on the street for around six months but at least it does mean that I have some experience of it- and it's pretty hard work going up hills.
42/16 would be 70.9 gear inches, 42/13 would be 87.2.
Now I am not really in a position to talk having run 49/15 on the street for around six months but at least it does mean that I have some experience of it- and it's pretty hard work going up hills.