This time of the year I run a 42 x 16 with 172.5 crank arms (I am 6' 5"). It is fairly flat where I am and this allows me to spin around 90-100 rpm most of the time. I live in Michigan and there is still snow on the ground and salt on the roads. For training and lack of cleaning, my fixed gear gets all the miles this time of the year.


After I get in shape, like around June-July I put on 48 x 16 or 15 with 175 arms. This gets me going a little better.