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@Tash
Hi, I've been utfs but nothing seems to answer my question...
My girlfriend's bike is a Fuji frame with wheels from a Charge....as far as I know, they are the standard white deepish rimmed ones with formula fixed/free rear hub.
Currently, she rides the freewheel side with a (46/18), but she wants to move to fixed (yay!), which has no sprocket on. I want to put a sprocket on the fixed side of the hub for her so she can ride it fixed, but I'm unsure if I'd be doing it right. (She lives in Nottingham, so LBS won't necessarily know shit)
I was thinking of a 17 or 18T sprocket, which should be OK I think as the axel isn't very far back.
But will it need a lockring? I don't understand how to check which side is 'threaded' (?) to put a lockring on.
The way it seems from reading around, is that if the freewheel side has a lockring already on it, I can simply screw a sprocket onto the fixed side and then it'll be ready to go?? Am I totally wrong?!
Any help appreciated...sorry I have no photos :)