Tube welding question

[agent4573]

Rambozo is right on. Most of the books you'll find on this subject are in "textbook" form, so don't expect easy reading on it, but SAE books are a great source to go learn. Once you get past chassis design, if you read "Racecar Vehicle Dynamics", it is extremely detailed in all aspects of designing and setting up the suspension. If you can understand a decent chassis textbook and the vehicle dynamics book, you can do basic designs of almost any type of vehicle.

[Big Paulie]

you obviously have a tubing notcher, based on the other joints. I would notch one end of a short length of tube, and using a die grinder, create a matching notch 90 degrees rotated on the other end. You cannot fit a piece this short in the notcher, so that is why you can only notch one end, then need the grinder for the other. If you handle it carefully, the body of the piece can be as little as 1/4" offset from one tube to another. Just want to leave enough room to fit the two opposing beads. I've use this technique to join a tubing horizontally to a flat surface, but using one end notched, the other cut square.