Originally Posted by WHOOOSSHHH...

Just did a singlespeed conversion. 42/17 gearing. I just happened to have a 42. I am new to ss and find climbing with this combo is perfct, even border line tough. Flats and slight downhil however, l find me not being able to spin fast enough to gain speed. I pretty much top out at 21 mph on the flats. Any suggestions on which chainring I should switch out? Thanks!