Commute here is DC this morning was great. It was a crisp 56 degrees when I left the house this morning. My commute is just short of 19 miles each way, and I was making great time this morning, i.e. the legs felt great. About half way through my ride, I got my first flat. Fortunately, I had all my tools with me along with a spare tube. Changed the flat in about 10 minutes and was off. By the time I got to my office my rear tire was flat again. Grrrrr! Really need to fix the flat before my ride home tonight. Guess I will be running to the bike store at lunch to pick up a few more CO2 cartridges and a new tube.

Regarding my flat, does this sound like a pinch flat? I have changed a million tubes on bikes over the years, but this is the first on my roadie (Campy Vento wheelset). I'm going to check my tube and see if I can see where the damage occurred. Any suggestions?

GB