Originally Posted by Aeroplane
IMHO, the best option I've seen for this sort of thing is this:
... or else this:
I have been lusting over the Ti Iditabike racer for a while! Did you notice that the front and back wheel are identical, complete with another casette and freehub? That's good design. It looks like Ti racks too.
That bike probalby weighs less than my steel snow bike, even with the huge wheels and racks on it.
They still don't float over deep soft snow. But they handle much better. If the snow is deep it's actually less work to plow throught with a narrow tire. But the wide tire helps a lot of other things. If there is a hard crust the wide tire can keep you up on top longer. A very light bike and rider helps too.