Earlier this week, one of those jobs that just keeps giving more.
Set out to spend a few spare minutes swapping the chain ring and chain on my Pompino. Had ordered in new parts, but quickly decided the sprocket was too worn as well, so checked the spares boxes in the loft and, as expected, found a suitable one. In removing the chain ring, noticed how badly the bottom-bracket and chain-stay area was rusting, so started on applying coats of green Hammerite. In between other things, bouts of rain, etc, that took several sessions. Found also that the rear mudguard, which we patched up years ago at the start of a Kelvedon Oyster event, was now split quite badly. Happily I have quite a few spare ones of those as well, so raided the loft again. Thought that, while fitting it, I'd better add the ACME mud flaps that I had put by for that bike. Finally started on the original job. Overall, several days.
Repeated the process on the single speed I use on Zwift - chain ring and chain again, sprocket fine this time. Fifteen minutes maybe, which is what I had planned for the Pompino...