Chains and Chainring width 6-7-8 speed.....
 

Is the width the same for 6,7,8 speed drivetrains? I need to get a crankset for an 8-speed setup and can't remember if the width is different than the 7/8.

Thanks!

Yes, aside from Suntour Ultra freewheels.

Incidentally, all* multispeed gears in the last half century or so use 3/32" gear teeth, but 9-11 speeds use narrower spacing.

*Aside from some oddball exception someone will bring up.

Sutherland's 7th Ed. Chains currently available on their website....

http://www.sutherlandsbicycle.com/Chapter5.pdf

just a quick thread hi-jack so I can repeat one of my favorite phrases:
"Zorch stroking, fast and bulbous."
Thanks, Frank, and
thanks, thinktubes, for reminding me...;)