Originally Posted by
cb400
That freewheel looks like it has about 4-8 too many teeth for the short cage NR, that gear it's in in the picture might be the max useable one in the big ring. That makes it about a 9 speed.
Nah. Looks like a 28t big cog, which usually works fine. The chain may be a bit short, though. And the housing is way too long.