Originally Posted by
cyccommute
That's a cassette. You need a chain whip and a lock ring remover. Hold the cassette in place with the chain whip and loosen the lockring in a normal manner. You will need a large wrench for the lockring remover.
okay, thank you for answering my question.
I assumed it was a freewheel because the bike is an early 90's Norco Bigfoot, but i guess they had cassettes back then as well.