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Old 03-10-2018, 11:20 AM   #101 (permalink)
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Today it would be bamboo with joins wrapped in hemp tape.


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

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Old 03-10-2018, 12:07 PM   #102 (permalink)
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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 ?



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


https://bamboobike.wordpress.com/42-2/
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Old 03-10-2018, 01:22 PM   #103 (permalink)
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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.
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Old 03-10-2018, 04:06 PM   #104 (permalink)
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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/
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Old 03-10-2018, 06:17 PM   #105 (permalink)
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Living room in the middle? All rooms short distance from the living room.
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Old 03-10-2018, 09:53 PM   #106 (permalink)
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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.
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Old 03-12-2018, 10:42 AM   #107 (permalink)
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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.




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Old 03-12-2018, 01:14 PM   #108 (permalink)
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That is pretty slick. Now all they need is transparent solar panels to eliminate the windows.
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Old 03-12-2018, 01:27 PM   #109 (permalink)
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Nice video show the construction process :

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

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That is pretty slick. Now all they need is transparent solar panels to eliminate the windows.
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Old 03-12-2018, 08:32 PM   #110 (permalink)
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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.

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