> For a prototype, you could just use 4 headsets, or 4 BBs or 4 hubs > (from old junk bikes). I would suggest the headsets. As shown in the attached picture you can just cut off the fork tube where the thread ends. Then use two upper cups and cones for the bearings and a short piece of head tube between them. The linkage between the 4 pivots consists of tubes and 5 mm steel plates. > Name Ideas: Following the snake tradition I would call it "Sidewinder". Vython for "virtual python" is nice too ;-) Greetings from Jürgen.
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