I spent a few days not cycling to let the strained calf muscle heal, and taking multivitamins to try and redress any electrolyte imbalance that could have been causing the cramps. Prior to this episode on the road I had noted several instance in my diary when I had been woken through the night by sharp cramps in my calf muscles, and thought it possible the long spell of very hot weather in the UK could have triggered heat-related issues. At last, though, I felt ready to get back in the saddle, and began short local trips of perhaps half an hour.
I set out today on the third such trip, this time intending to go a bit further, and was happily pedalling at a steady pace through the lanes towards home after perhaps forty minutes, when I felt a steady bumping from the back wheel, typical of a puncture. I glanced down but saw no sign of a flat tyre and wondered briefly if I was being fooled by irregularities in the rough surface, but the bumping was regular and slowed when I did, so I hopped off, and saw this.
I deflated the tyre and popped the bead back in, pumped up the tyre again, and walked along for a few years until I found a high enough verge for an easy mount. However, within a few pedal strokes, there was the thump again, and when I stopped and looked, I saw the same behaviour in the identical spot on the wheel.
There was nothing else but to walk the Pedersen home, and here I came across another strange problem. After a few hundred yards, I was hobbling and limping. Glancing down, I saw that my right foot was splayed out at almost 45 degrees, and seemed beyond my control. I switched sides and walked the Pedersen with it to my left, and to my relief my right foot behaved itself, and the left foot didn’t try to misbehave. Up till then I had been faced with the prospect of having to phone up my partner and ask her to come and get me, as the tyre problem precluded even standing on a pedal and scootering along to favour a dodgy foot.
Once home I popped the tyre off the rim and fitted the new spare, after examining the rim closely but finding nothing in the location of the pop-out to explain the problem, and indeed, I couldn’t detect anything obvious such as a broken bead wire in the tyre, but it was quite old, and the back tyre takes more punishment than the front due to the squirming effect caused by pedalling stresses.
As I was in maintenance mode I also decided to close up the rear brakes, because the gap I had allowed in the rear brake blocks to allow easy removal and refitting of the wheel had grown such that I could almost close the brake lever to the handlebars. I halved the gap, re-tightened the clamp screw, and gave a test pull on the rear brake lever. The cable snapped instantly, about an inch from the barrel ferrule where it locked into the brake lever. I had another rummage for the spares I had taken around Scandinavia all those years ago, and replaced a 32-year old cable with a 32-year old spare.