Thinking of going 1x9 since I almost exclusively use my middle ring anyway. Only thing is that I tend to use mostly the low end of my cassette with the 32t ring I have. I would like to try out a 28 or 30 because I think that would have me working more of the middle of my cassette. Of course the problem is a standard 104BCD set of cranks wont take anything less than a 32t ring. Do they make cranks with a different BCD that can take smaller rings? I could just use the location for my small right I guess but that seems like it would really throw off the chain-line.
Links to any recommendations appreciated!