good ride into work today. no trains blocking the route! woop. 71 deg. cloudy but not raining. had my rear wheel rebuilt and changed from 700c / 35 to 700c / 28 a week ago and have noticed my rides are lots faster. have consistenly shaved 5 minutes off the commute both ends. Average speeds have increased by about 1 mph. nice. I also think the engine is getting stronger too. the commute went from 3 miles/ride to 10-11 miles/ride mid May and am starting to see and feel changes on the road. nice!