Originally Posted by
AlmostTrick
Single speed crank is what you should use. Is the one you have the same style? (square taper, or something else?) If so, use it.
Lots of choices on budget wheels. What's wrong with your present wheels?
A lot of budget singlespeed cranks are just doubles with a singlespeed chainring. Chainring and bottom bracket/chainline matters far more than the crankarms.