I have two bikes with ramped 7-speed cogs in the back and both shift just fine with Suntour Barcon friction shifters. I have a 9-speed cassette I'm going to try at some point, but I haven't gotten around to picking up a 9-speed chain, so I can't comment on 9 speeds.
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I stop for people / whose right of way I honor / but not for no one.

Originally Posted by
bragi
"However, it's never a good idea to overgeneralize."