I was looking for a good cheep hub to attach a FW to, and found this one that looks good: "Finally, a fixed/free flip flop hub for your mountain bike at a reasonable price. Throw a thread-on freewheel on one side for everyday riding and a track cog on the other side for when you’re feeling really frisky" I get the "flip flop" part, and I THINK the "fixed/freewheel" means you can mount a FW on one side OR use a regular cog on the other side with a FFW system. Can anyone confirm this? If so, that would allow for good future options, no comps though. Anyway, has anyone tried one and/or know if they are any good? Here is a link http://www.webcyclery.com/.docs/product_id/1711/pg/product_details.html Thanks Steffen'