I have a road bike (Carlton Flyer, 1977) with a regina extra rear cassette. I'm interested in downgearing it (i live on a massive hill) and am trying to identify whether it is a freewheel or cassette and if downgearing is possible - before I start pulling it apart.
Ideally, I'd like to replace it with the same type, or add an extra ring at the top to give me a climbing gear. Doesn't have indexed shifters so I don't think that would be an issue.
Any help appreciated!