Nice, but much not usable wheel before you scrape the trucks. Concrete will eat them up quickly.

I think there will be big problems with this approach.

The smaller diameter will result in faster rotation, so as you go over on the side, the wheel speed will have to markedly increase. If the wheels compress at all, you'll have multiple different diameters in contact with the ground at the same time. Fundamentally the wheel cannot rotate at 2 different speeds at the same time, so this will result in one part of the surface having to actually slip.

therefore I see this having quite reduced traction.

That doesn't add up Adrien. If that were the case then vehicles with curved or rounded wheels, like a motorcycle, would have major issues when turning at speed.

This thing is a revelation.It rides like nothing you have ever tried before.Like Dustin said,a motorcycle tire has rounded side walls so you can bank into turns.Waves are curved, this board makes the road feel like one giant wave.

You've tried one?

The question of torque wind-up is a canard. The main concern is contact patch, which I assume can be dealt with by choosing polymers wisely. It looks like this would provide a straighter lean, where body/board/wheels are more in alignment, and the ground contact point would be more inboard than outboard. I bet it is faster going straight as well. If Shredder has ridden this unit I say his word is Gospel.

A little more wheel diameter please. More than few millimeters of wear and the thing will be bottoming out. Nice work in all other respects. How are you preventing axle bending with weight substantially over the outside of the long wheel? Mucho strong axlel and top flight bearings I hope.

I'd use a tapered axle and use a smaller bearing on the outside and larger bearings on the inside to over come axle issue. Agree, regarding needing more wheel diameter to keep the skateboard trucks from bottoming out.

along way from the days were we nail two skate halves together on either end of a two-by-four, LOL!! Any Old Schoolers out there?!!

Here it is Carving.

you could achieve exactly the same result by applying some negative camber to the axles

With the smaller contact patches, especially when tipped over onto two wheels, how well does it resist skidding sideways on smoother surfaces?

Thanks, Micheal Carter...its all about the ride and its all fun!

You can get just as much lean on a longboard with wheel cut-outs; seems like they're addressing a problem that's already been solved...

I believe the "tilt" and "twist" in the trucks are what allow the tapered wheels to align to the turn- shape and gain added wheel-to-ground surface area. This twisting and tilting allows skateboards to turn, this should function to aid in turning and increase wheel friction.... Or at least, that is how it seems from the video.

Old Schooler here and actually still have one of the first 63' boards purchased at a Sears in Virginia. Many a long hill ride on streets and some on sidewalks in Alexandria, most of the carving was to slow down. Not a bunch of tricks then. Great way to get from there to here or the other way around. Still doesn't match the thrill of riding the real things in Hawaii, though. Sidewalk surfing's a blast even when we used to hookybob behind trucks, buses and an occasional car.