Tyre scrubbing on trike with dual-shock suspension

This post is a continuation of the previous post, except considering using the wishbones as they are intended, with two shock absorbers. Previous post:

https://bkhome.org/news/202310/tyre-scrubbing-on-trike-with-suspension.html

SolveSpace design, using the 222mm shock absorbers that came with the wishbone kit:

...the shock absorbers are connected at the top by a pivoted bar; the horizontal line joining them is pivoted in the middle, to allow for leaning.

I played around in SolveSpace, and this design looks good. The shock absorbers only allow 50mm compression; however, this results in 75mm vertical displacement of the wheels. That's just on 3 inches, before the shock absorbers reach their limit -- they have a rubber stopper to lessen the impact if the limit reached.

Plotting it, like did before:

..."0" on the vertical axis is when riding along on a smooth road. Hit a ripple that sends both wheels up; can go up 3 inches before the shock absorbers reach maximum compression.

For 50mm vertical deflection, scrubbing is about 2mm each way; about 1mm per tyre. Well, it depends where set the "0" point; could move it up a bit on that curve and get close to 0.5mm per-tyre each way for 30mm deflection. Maybe a bit of tweaking of wishbone mounting coordinates can improve that curve a little bit more.

In SolveSpace I played around with leaning and single-wheel deflection. For example, if one wheel hits a bump and is deflected up 50mm, the shock absorber on that side reaches maximum compression, and horizontal scrubbing on the road between the two wheels is only 0.35mm. So, hitting a bump on one side, there is less vertical travel that will be cushioned. There is a limit on amount of lean allowed, as a shock absorber will hit the top wishbone -- easy to put a limit on leaning to avoid that.     

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