Further testing has been done with the bolted joint.
About 350 foot-lbs of torque for the joint, the video is here if you are interested
Demo Nov 24, Bolted Joint Testing V4 - YouTube
The next test version (after some discussion with the group) will replace the flat plate used as a large washer with an 'L' shaped angle iron. This should reinforce the side wall that failed in this test.
I'll be starting a new thread tomorrow, Dec 11, for the half-scale model of the WikisPEED SGT01. This will be an accurate half-scale model as closely as I can manage.
The thread will start tomorrow since I had ordered the aluminum tubes cut to length from a local dock-building shop (boat docks). They work almost exclusively in aluminum and they can supply cut aluminum pieces for less than I can purchase the aluminum tube for retail. The aluminum is sold in 20 foot lengths, and I do not need to purchase an entire length!
Anyway, I ordered the tube and will bring it home tomorrow. So that's when the thread will begin.
The frame should go together fairly quickly - I will be using the untested upgrades described above. The strength should exceed the 350 foot-lbs that I tested in the video.
After the car frame is complete, I will plan modifications that are required to make the car frame into a truck ... and Weston's truck will continue.