The very first day I rode my bike to work, the seat post was slowly sliding down into the frame. A few weeks back I had to adjust it up again. Some would suggest that the bike is trying to tell me to loose some weight. Again, the seat was too low.
So, this evening, I went out to put it up again ready for the morning. So I tightened it up. Then a bit more, Well then just a bit ... ping!!! Nuts.
What to do? First a quick check of the old bike. That was too small. Next I called my brother to see if he had a spare. Same problem. This bike has a seat tube of 34.9mm. It was getting late, and there was only one thing for it. A quick dash to the local Halfords and I managed to pick up a spare.
We are back on the road.