I tried it with the 451 rear wheel off my Swift shod with a 1-1/8" Primo Comet. The tire hit the Nano's rear brake bridge. I didn't bother checking the front.

Too bad, as I'd heard that the first version of the Nano either came in 451 or could fit them.

Edit: Smallwheeler, the top picture you just posted was one of the first lot. I remember now they came with the bullhorn handlebars and cross levers. That was a nice setup.