One challenge with the design brief is that the fittings and tubing may not exist. Bike tube sets come in lengths and butting appropriate for diamond frames. There’s no 853 butted mixte side tube that’s 3.5 feet long. That part is going to be straight 4130. Without lugs the joints get tig welded or fillet brazed
I reorganized my list in the prior post and added a few
Last edited by Darth Lefty; 12-30-22 at 09:13 AM.