 You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more
I am thinking this is probably the new chain and cassette on the very old very worn chainring - any other thoughts
rear wheel bearing/hub.
You're riding over snails?
Pedal bearings. BB bearings. Freehub. Knees.
pedals are smooth, BB is new, freehub was fine last ride before the change of chainring
I suspect you are right and it's the chainring.
Have you checked your pockets for bags of crisps?
Been anywhere sandy? After a wet day a Chicksands my bike made crunchy noises/felt gritty when pedalling, for about a month, no matter how hard I cleaned it. I was about to replace the bottom bracket when it finally rid itself of the last few grains.
Definitely your knees then.
Was the chainring coupled with the loose cones