Oh now I’m really intrugued…
I hadn’t thought about the wheels but that make so much sense. So, perhaps, if we could intruduce some (a bunch of?) lateral flex without impacting wheel tension, or shock and bearing wear we might be on to something interesting…
Just kidding. Maybe if you ran shepical bearings on your linkage to account for any misalignment or motion and large, affordable (they’ve got the wiggle built in!) main pivot bearings (from a wheelbarrow?) it might be accidentally awesome?
That would really help explain what I think I’ve got going on here. Interesting 