SSAZ07 One of the smarter things I've done this winter was commit to doing a race in Arizona in early February. That didn't really mean I had to race, since racing can often take the fun out of a good ride and the last race I did was an 8-beer DNF four years ago, it just means riding on dirt without getting frostbitten. Enter Single Speed Arizona, a 40-mile death jaunt up and around Mt.Lemmon, just outside Tucson. Just getting off the plane and feeling the warm air was almost worth the plane ticket. Our friend Stephanie picked Chewey, Hurl…