Ah, there aren't 2 rings, the outer region is part of the freewheel and the circlip is what holds the sprocket in place? According to this:
"Place the wheel on its side with the sprocket facing upward. Take a careful look at the mechanism and locate the spring circlip. This is the snap ring that holds the sprocket in place on the hub.
3
Fit the flat-head screwdriver into the circlip's groove. Use leverage to pry up the ring a bit at a time, gradually moving around the outside groove. Set the circlip aside."
That sounds like a really messy way of doing things, I'm worried that I'll scrape/dent the parts. Has this been designed by someone who's attracted to risk / danger? An extreme sports fanatic perhaps?
Last edited by chagzuki; 10-09-10 at 07:01 AM.