I finished this a few hours ago. It needs powdercoat. But, it’s otherwise ready to go. I only have a 5 or 6 miles on it, and I’m a relative novice. So, a report of it’s performance, from me, doesn’t have much value at this point.
The frame is fillet brazed .049" cromoly tubing and a steerer from a wrecked Surly 1x1 fork. The bearing holders are steel shaft collars.
I’m using the same heavy tire that George is riding. The production 60tpi tires will be up to 660 grams lighter. And, some creative machining removes 300+ grams from the rim. I’m looking forward to riding it with less rotating mass, but I’m happy riding it as is. I’m biased, of course.