I built one by removing all the sprockets on a freewheel exept one of the middle ones and then tacked the freewheel solid. I didn't know if I would care for a fixed gear bike so I wanted to go super cheap to find out. I didn't like it so it has been sent to the back of the garage to await another stroke of genius.
personally i dont like the idea of fixed gear, but if i could try it for free i was going to, i might try jb welding a sprocket to a lock ring or something and give it a whirl.
For some reason I've really been wanting to do a fixed cog rear wheel with a shimano freewheeling chainring on the front. Then some sort of disc brake caliper can clamp onto the chainring for braking. Just because its kind of backwards I guess.
thats what schwinn did in the 70s and 80s. so if you swapped out the front sprocket and the crank to a normal setup, would it be a multi-gear fixie? :lol: