New sprocket - Alloy or cromo?

Tried out my geared bike this morn on way to work on 42-14 - thought i could push a bit more -it may be a struggle up the hills but it seriously sucks sticking to 23-24mph down hills on 42 16///

maybe should just go with the 14?

by sticking to - i mean spinning madly at

I've only just seen this. Not even 120rpm downhill.

Unless you've got some kind of physical disability, it's a fucking disgrace, and you should fit a freewheel.

Whereabouts in Yorkshire are you? I'm going to write to your fucking MP, you big girl's blouse.