I have a vintage race frame with a Shimano Dura Ace 7400 series double-ring crankset on a Shimano bottom bracket of some kind.
I intend to use the frame to build a fixed gear bike. As I understand, these road cranks are different from track/singlespeed cranks in terms of alignment, so I would need to replace them. Is that very necessary, or is simply removing one of the chainrings enough?
If the crankset is to be replaced, what about the bottom bracket? Will the existing bottom bracket fit, or are BBs used for single-speeds different in some way? The only difference I can imagine is the width of the part for crank attachment.