Bits from everywhere. Seven frames donated parts. Gob welds galore on seamless mild steel. Almost no chrome moly. I’ve been slowly working on this for years. Most of the time it hangs on my shop wall and I collect parts from bikes people give me. I threw the parts in a box. This winter I did an inventory and found out I had enough to start again. I had no more excuses. The main frame is from a fixie picked up cheap as the craze is over. I had to buy pedals, cables, seat post, tires and two seats to cut up and make into a reasonable facsimile of a new Brooks B 72. It’s geared as original so it’s no good for modern single track. The original was a downhill bike as there weren't good climbing gears. The originals were made from bulk aircraft chromo and was light so the laterals were added. I wouldn’t trust my welds for downhill. It’s welded by stick, MIG and some brazing. The high heat, poor fitting tubes and gob welds make for a brittle frame. I hope to gravel race it this year, if I finish it. The tire tread pattern is similar to the originals but the tread is not flat like a car tire as were the originals. It took awhile for the rounded side wall grip design to be be developed. The story goes that 70s racers would cut the tread to make it round and cut grooves in the trimmed area to improve cornering grip. The vintage motorcycle brake/clutch levers were picked up a few years ago. I have another set of vintage motorcycle levers but they aren’t as nice.