For my visual learners out there, here’s a slideshow about Presta-valve tubes. They come in differing stem lengths, and I usually end up with many tubes on hand, all of the wrong length. Not an insuperable obstacle, however; watch the slides for details.
Another brisk morning, although it’s been getting slightly warmer. Since I moved to the tent, I’ve been on the asleep at 10:30, up at six schedule that everyone inside more or less shares. That plus the cold I’m shaking off has kept me off the piste in the mornings. Instead I get up, wash up, dress, clean off the bike’s brake pads (I used to check the tire inflation too, but with the short valve stem of the current rear tube, it’s a little more difficult to use the gauge), and ride the 400 meters distance to breakfast, then over here to the internet cafe to catch up on whatever emails I’ve received during the night.
It was a little tricky because the new tube had a shorter valve stem than the punctured tube, and its business end was just peeking out of the tube, not far enough to attach the pump. So I remembered a trick I’d used before and pulled out the Schraeder adapter, which was able to screw onto the end of the valve and allow me to fill the tube with air anyway.
The funny thing is that I spent the rest of the afternoon wondering if there was some kind of bad mojo that had caused my flat. I keep having to remind myself, “There’s plenty of air in the tube. I could hit a shard of glass or a staple any time. I had enough air in there for a week, so it’s not like there was some kind of slow leak. It’s a tear in the tube and there’s nothing I can do about it.”