Hi

I have posted this on another forum (just before I went to work today) came back to realise it wasn't very active so... I'm pasting it here (in this happening place):

I am a bit of a tourer, and I am the proud owner of a classical touring dawes galaxy. I've had this bicycle for a number of years, and have noticed the cassette and chain skipping. I'm in the process of replacing them both, as I had planned since the day I bought the bicycle.

I am surprised with the low range of my cassette (for touring) and I just really need to know whether my 12-24 cassette can be replaced 'simply' with say a 12-28, I have an old basic Shimano RSX 8 speed system; or would this be a problem with the derailleur?
I am on the verge of buying a cassette and chain at the moment, and of-course do not want to buy the wrong one. I understand I would later also need to work out the appropriate length of chain in accordance to the new sized cassette.

Am I going to be fine?

Ben.

P.S. My chainset range is 30 - 42 - 52. And never do I use the 52 sprocket; It might be worth changing this I assume?