I tried to do a search to answer my questions, so I apologize in advance if this has been discussed to death already.
Recently picked up a used TK2. I saw on another thread where Carleton recommended a few chainrings and cogs in different sizes. After looking on Ebay I was pleasantly surprised to see new cogs only run about $20 apiece (finally something bike related that's not too expensive!).
I have a few questions about finding the right chainrings and cogs:
Since the Felt website listed the existing cog as being 15t x 1/2 pitch x 1/8 I assume I need to find cogs that are 1/8 wide? I have no idea what 1/2 pitch means.
The bike has a Sram crankset, do I need to buy any particular brand of chainrings (Shimano, Sram, FSA, Campy)? What about cogs?
Finally (on an unrelated note), why do track cyclists put tape on their top tubes???