Still, I got a bit done today. I was a bit stuck for what to use for the rear end. Motorbike? Sierra? Herald? Those seemed to be the choices, and I do not have any dead motorbikes lying around. The Sierra stuff was a bit heavy and the driveshafts don't stick out far enough before turning into a CV joint.
It's only supported on one side, so I've used heavier tubing and it will have plenty of triangulation. The motor goes in the gap between the two tubes at the chassis end, and the spring will act on the upper tube. Probably.
Now I need to choose the pulleys. Or should it be chain drive? Decisions...
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