about 2 weeks back, out for a training ride, just after riding through a gravel covered patch of road I hear the hiss hiss hiss of a tyre going flat.
Pull over, change the tube. but when I screw the gas of the bomb onto the adapter thingy half a good portion of the gas escapes.
lesson 1. always make sure the valve on the bomb is closed before inserting the gas.
I inflate the wheel with what is left of the gas. decide that its hard enough to make it home as its only a few kms.
i head off home, but the route takes me past some more road works, and because of the traffic at that time of night I have to keep far left. doing a good 35-40km/h I clip a stone. not even a hiss, just straight down rim hitting tar.
I gave up here and called home for a lift.
stupid me, at home, changing tubes I pinch one of the new ones putting it in, that leaves me with only one spare.
yesterday morning I go out, I'm heading down this hill and catching another cyclist rather rapidly. we are along side some road works when, pshhh hiss hisss hisss. another pinched tube as I hit another stone at 40+ km/h.
Now I usually run my wheels at 110psi, plus I'm using Conti Gatorskins, but with all the crap in the roads these days its becoming rather expensive to keep changing tubes.