nice read, thanks

first result from Simpack wobble simulation (wait till 0:20 to see the wobble appearing).
The model seems to be working for the skateboard. Next step will be for the flexboardz

That'd be without rider input?
Interesting ... sims are cool!

I have not yet all the info about simpack simulation hypothesis but , yes, I think that it involves a rider but it is not represented on the video...more info soon...

Simpack analysis of the Flexboardz stability is progressing...here is the output video and we will have some detailed analysis soon.

Again, you need to wait 30 sec before it starts wobbling...

At the end, you can see a small cube; it represents the rider weight (the hypothesis is that the rider is rigidly linked to the board like a dummy or a beginning/frightened rider (rigid ankle / no dampening)...

it must be noted that, under this hypothesis (no dampening), all board will wobble at some stage...

Here is the report from Simpack Stability analysis :

I hope to get more explanations from them soon...and to introduce some rider control/dampening to get a more realistic simulation (keep in mind that rider's weight is rigidly linked to the board which increase the instability)

I don't know why the pics are so small (you can get more details here :Flexboardz.com/Wobble )