To test the disc cog, I bolted it on the Surly/Mavic 717 wheel and set everything up. I took the bike, now with front brake only, outside the garage and planned to give it a try. At first I couldn't get it started, because I was so much used to coasting. Once I figured it out I rode around the community a couple loops. The ride felt different but it was definitely interesting. I'm going to ride on the pavement a little more before venturing into the wildness.