Current Projects chat and miscellany

Leave the chainset alone and get a CS-6600 16-27 cassette, 53/16 is plenty of top gear for riding around town.

£50?

No. £29 for the cheapest one I'd give house room.

I wouldn't suggest buying new. A tenner is the most i'd pay on here for a standard chainring.

And going from 53 to 48 is only 10%, so if you're crossing over to the 21 sprocket, changing the ring is only going to move you up 1 cog to the 19.

48/19 is actually 0.1% higher than 53/21

You have assumed what degree of crossing he's experiencing.