To Wheel Or Not To Wheel ?

[freebeard]

Today it would be bamboo with joins wrapped in hemp tape.


https://bamboobike.wordpress.com/42-2/

[All Darc]

Are you seriously?

Do you think a bamboo frame, following the same design, put together with this "eco tape" (ith resin to finishe, right ?) can weight 1/4 of the steel frame and also be resistant enough ?

Originally Posted by freebeard

Today it would be bamboo with joins wrapped in hemp tape.


https://bamboobike.wordpress.com/42-2/

[All Darc]

Bamboo fibers stronger than steel ?

https://www.dezeen.com/2015/11/04/ba...festival-2015/

But resistance of fibers it's not the same as resistance of a tube for other kind of pression. Or not???

China uses bamboos replacing steel in some building since many years ago, if I remamber well.

[freebeard]

Between [Today, 09:07 AM] and [Today, 10:22 AM], local time, a light went on. To get equal performance from steel you'd have to 3D print voids at teh mesoscale.

And, seriously, those bamboobike folk go on about randomizing the loose fibers. They could just use hemp tape and rely on the weaving to structure the fibers. Then it's down to how you wrap the join. And drawing the air bubbles out from the resin with a vacuum.

Want to live in a doughnut?


https://inhabitat.com/sustainable-bamboo-pavilion-for-communal-living/bamboo_pavilion_02/

[Angel And The Wolf]

Originally Posted by freebeard

Want to live in a doughnut?


https://inhabitat.com/sustainable-bamboo-pavilion-for-communal-living/bamboo_pavilion_02/

Living room in the middle? All rooms short distance from the living room.

[freebeard]

I think it's a communal space in the [off-]center with apartments/dorm rooms behind a separating hallway.

Being in the Pacific NW, I appreciate the water management.

[All Darc]

I finally got information for the Solarworld No.1 solar car .

Professor Eckard Beese, from Bochum University, responsible for the final shape, was kind to provide information.


"Dear Mr. XXXXX


in the Audi wind tunnel, the ready-to-drive vehicle had a cw value of 0.097.

Because we wanted to adjust the geometry as close as possible to the original Morelli contour, which is getting narrower towards the front, the solution offered three wheels, one wheel at the front.

This is not the optimal solution for the handling, but for the aerodynamics.

With two wheels in front, the geometry has to be changed significantly, which makes the aerodynamics worse.


Sincerely yours

Eckard Beese"

It's probably the best Morelli's shape use for final drag coefficient ever made. Aztec solar car had a 0,12 CW, Aptera type 1 (Zen) had a 0,11 (while 2E version had 0,12). The Fusion Machine (4 seats bike) probably have higher than 0,097 due front wheels despite streamlined covers.

Solarworld no.1 also have a lower frontal area, while Aptera large front wheels stream covers probably increased the frontal area significantly. So I presume the difference for CDA between solarworld no.1 and Aptera is even higher.

[freebeard]

That is pretty slick. Now all they need is transparent solar panels to eliminate the windows.

[All Darc]

Nice video show the construction process :

https://www.youtube.com/watch?time_c...&v=FwqFfUiQDT8

Originally Posted by freebeard

That is pretty slick. Now all they need is transparent solar panels to eliminate the windows.

[freebeard]

2:22 — a competitors ingress/egress.

2:29 — Solarworld No.1 uses a turntable pant for the front wheel, like BamZipPow's Dark Aero trailer. That's likely why they show gain over four wheels.