An upcoming "Group Buy Production Run" of water jet cut parts for other builders has inspired me to develop a more practical method of achieving accurate bending results.
Anyone building a Skyote needs one of these anyway. This is a 36" brake. There are many options but smaller brakes don't generally have the backbone required to bend 4130.
The operator is responsible for achieving the proper bend angle. A simple angle gauge for 97.2 degrees and 82.8 degrees will be provided with the fitting kits.
With a little practice you can get really close every time. Adjusting fittings which are a little over bent is easy. Also, you can C-clamp a stop onto the frame of the brake.
Only one jig is required for the 4130 kit parts because I made small adjustments (0.015"+/-) to all of the fitment models so the the bend offset from the edge of each fitting is identical. This method is considerably faster than my precision ram type press brake.