Originally Posted by Timmi

don't be a sarcastic troll.

I have tried some SRAM chains, 9 speed, I think it was 951 and 971 if my memory is correct, on some freewheels not designed for 9spd, and the chain wouldn't go on.

your old gary fisher probably had the 8speed spacing, but thinner cogs, and a thinner steel chainring. are you still restoring old all-steel bikes with cotter-pin steel cranksets and steel brakes? or have you finally accepted that people should be riding on something lighter than 50lbs?

normally I would just ignore you, because you are making these otherwise nice forums very unpleasant for all of us, but I don't want you misleading people into doing stupid things. putting a thinner chain on a good bike, with components actually to spec, will accelerate wear on the alloy chainring's teeth, as the chain is narrower than the teeth are wide. some cogs might not accept the chain either, some might, some might difficultly and cause accelerated wear and weakening to the chain - not to the breaking point, but so as to increase chain stretch for serious riders. at the prices a chain go for these days, (and you can buy them in bulk - find out where bike messengers buy them in your city), it's really not a smart move to use the wrong chain on a quality drivetrain.

...as for your garyfisher and other antiques, well, you can probably use whatever.