Hi all, many thanx for all the replies, I think I may need to test some ratios while on my next road ride and see what feels nice, and then convert to what I can use with the spare CR I have here, I have a Galli 44T and some Campagnolo SR cr ranging from 43T or 44T up to 47T, so I should find something there, I was looking forward to using the 47T because it fills up the Campagnolo cyclo chain guard nicer than a 44T would, I have a 16T rear cog, but I can see its going to get bigger, maybe a 19T would be closer.......regards wayne davidson Invers NZ.......