Bottom bracket weirdness

unxetas The cranks have a double chainring, which I'm planning on turning single using shorter bolts. Apparently, using a bb for a double chainset, it places the inner ring at 41mm and the outer at 46. So if I were to use the inner ring, it should work pretty good, right? Or do I definately want a track bottom bracket? If so, any cheap ISO tapered track bb's around?

Campag make cheap (ten sheets) ISO Cart BBs. Either Mirage or Veloce. Spindle is 111mm on both.

Do you know the standard spindle length for the cranks you wish to use?

Do you really need the hassle?

You've got a bike that works!

Ride and enjoy.