I'm in a similar situation. I have a Trek 920 with the Hyperdrive C chainring set and all other Shimano STX components stock as of 1994. The chain jammed on me yesterday, and now that I look at it, the chainring set is in poor shape. The cassette looks OK, although with some visible wear.
This thread just kind of died without any recommendation. I guess I will replace the crank & chainring set. Is there some advantage to doing the cassette at the same time? Are there entire sets sold at a discount? Any recommendations on what to get?
Also: This bike is a 21-speed, but cranksets often refer to nine- or 10-speed. Does this refer to the number of gears in the cassette, or something else?
I mainly ride the bike around town. I have road tires on it. I might go on trails someday, but it doesn't seem imminent.
Thanks!
Gavin
Last edited by Stokestack; 08-22-16 at 07:34 PM.