my bad

the stock front sprocket on me speedmaster was a 16 tooth not 17

I now have a 19/42 set-up and it ROCKS! I still have a blast from stoplights and haven't had any problems in the hills and such

and occasionally I still look for a 6th gear on the big road!

USS Carl Vinson, HT2 and USN Fire marshal, 50,000 miles sailing over the briney deep *World cruise 1983*, plankowner CVN-70