Sure, I understand that "it is not hard to build a light fixed gear", but I disagree that "it is hard to build a heavy fixed gear" Is your example typical of the norm or is it an exception? My observation is that most FGs are steel framed and have generally heavy wheels, even expensive ones. I have a 1976 Schwinn Paramount P14 steel track bike that is only 49cm and has very light tubular box section rims/tires and no brake, and it weighs 17 lbs. I'm sure that a 60cm version would be a good pound heavier. I see that the Wabi has a "thin walled tubing frame", so I sure hope you treat it with kid gloves.