My fiancÚ bought a failed attempt of a Trek fixed gear. I want to convert it to a manual two speed for his birthday. My budget is 200 for the parts I still need. I have already purchased Shimano 600ex brake levers and cable housing. Here is where I need help.
Problem 1: I would prefer to buy two chainrings (46 and 36). The current chainrings are 130bcd. Can I buy two chainrings or do I need to buy a new crankset? If I can get away with buying two chainrings, what do I need to know to make sure they are compatible?
Problem 2: I have brake levers. I need brake calipers. What do suggest that will look good and function reliably.
Thanks for all of your help!!