I mentioned my interest in 650B wheels a few weeks ago in a Brain Fart. I’ve been slowly putting together the needed parts. So far Kirk Pacenti has come through with a set of Neo-Moto tires and Velocity has provided a set of 650B Blunt rims.
tires and rims

The tires both weighed in at 711 grams and the rims at 465 and 462.

Hubs and spokes are in the works, look for more updates soon.