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@Tesseract
I just got my first fixed off ebay and I am loving it. However the bike is currently set up with 44/18 gearing which I think is just a little low for my commute. I would like to get a 17t cog (and possibly a 16t) and I was wondering how I can tell which cogs will fit my hub? There seem to be a few different styles of interface. I would take a look myself but I don't have a chainwhip or lockring remover yet.
The hub is a Maillard track hub, I am not sure what vintage. Any ideas what will fit and who might sell them?
Cheers,
Tony