Four bar ? Is that the design that swings up, instead of out ?
I like that design, but am unsure how I would make it work around the edges.
With a hinged design, I just have to create a rigid arch attached to the lip.
I'm trying to avoid air, and especially water, from getting in between the cover and and the wheel and ripping it off.
I'm still curious how the 4bar design works.
I'll try again to find some videos showing it in action
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