Well, for the first, I tried switching over from S.S. to fixed gear for a day and man, did I suffer! I really liked the feel, but I am used to standing up on the pedals while coasting to stretch the hamstrings, calves and back every ten or fifteen miles, and FG just won't let you do that. I did 30 miles and got such leg cramps I had to slow way down and pedal standing up to get any relief. Maybe the gearing was too low (I was spinning at 96-100 rpm with tailwinds and almost no resistance) or I just went too far the first time. Not fun.

I changed back to S.S. today and had a wonderful 25 miler @ 17.5 mph average. Really hesitant to try it again. Any ideas?