Had to call
emergency services after a roadside fix gone wrong.
The seatpost has been slipping. I tightened it to the limit of tightenability before my ride, then marked the post with tape to see if it kept going down. It did.
It then struck me that this is likely because I'd temporarily swapped posts with a metal one which has anti-seize on it, which I hadn't wiped off before reinstalling the carbon post.
I had some paper towels in my saddlebag, so I stopped to do that. Unfortunately I broke the bolt in the process of unclenching it. (I actually had a spare clamp as well – but the wrong size!) If it weren't for the saddlebag, too heavy to safely hold or hook on my handlebars, I would've just ridden home out of the saddle. Even walking seemed preferable to a callout, but it's 5 miles, which while hardly a marathon, was too much of a hairshirt approach when there was someone who could be roused from her cozy nest.
. . .
On order: a new clamp, because I can't extract the remainder of the bolt. It rattles around, taunting me. (I considered
loctiting it out, but not sure how hold the extraction tool, probably another allen key, to the end of the bolt until it sets. And no, that verb will never catch on.)
Also on the way is a torque wrench which looks like it was made on Blue Peter, but which reviews assure me does indeed mostly work.
Also beats eggs