Newbie question

[interregnum]

I have an old Raleigh with a Sturmey-Archer rear hub. The chain is on fine, but when I rotate the pedals the rear wheel won't turn. How do I fix this? I know very little about bikes...

[DaveM]

Might need the gears adjusted. Look at: http://www.sheldonbrown.com/sturmey-archer.html<br />
There's a section about adjusting near the bottom of the page.

[Dana]

I have a bike with 20 inch wheels. There are many mountains in my area. I want to ride over those mountains easily and don't know what crankset and cassette to put on my bike. Any ideas?