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Old 09-25-2020, 12:23 PM   #3571 (permalink)
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anyone?

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Originally Posted by freebeard View Post
So, has anyone compared flat fences to those coupound curve skegs the supercars use?
https://www.thegentlemanracer.com/20...-revealed.html

A limitation of fabrication technique?
Not me! And it will never happen.

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Old 09-26-2020, 02:30 PM   #3572 (permalink)
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Quote:
Originally Posted by freebeard View Post
So, has anyone compared flat fences to those coupound curve skegs the supercars use?
https://www.thegentlemanracer.com/20...-revealed.html

A limitation of fabrication technique?
This type of car is not going for low drag - they need a fair bit of downforce. So, the diffuser angle is not good for minimum drag.
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Old 09-26-2020, 02:51 PM   #3573 (permalink)
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MacLaren actively modulates the downforce for just that reason.

I think the diffuser could be structured like an M-hull running in reverse.


http://img.bhs4.com/4c/a/4caeaab7954...4303_large.jpg
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Old 10-06-2020, 12:55 AM   #3574 (permalink)
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https://duckduckgo.com/?q=piech+automotive+EV
Quote:
Thiel Invests As EV Startup Pich Automotive Hires Porsche ...
https://www.forbes.com/sites/michael...d-tesla-execs/
Founded by Anton (Toni) Pich, the son of European automotive legend Dr Ferdinand Piech and the grandson of Ferdinand Porsche, Pich Automotive aims to produce customer EVs by 2022. Photo: John ...


EV Startup Pich Automotive Appoints Former VW Group Boss ...
https://www.carscoops.com/2020/10/ev...r-as-chairman/
Pich Automotive's team also includes former BMW, Porsche, and Tesla executives. ... Figuring out which electric vehicle startup will survive or not is a lottery these days, ... Piech.
As a Tesla and VW fan I find this interesting. Ex-VW and Tesla executives' new startup has a design almost as good as the Renovo/Cobra Coupe. And a five-minute 80% charge rate.


https://www.insidehook.com/wp-conten...1551816354.jpg


https://i.pinimg.com/736x/c6/08/72/c...97e0e43983.jpg
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Old 10-06-2020, 09:24 AM   #3575 (permalink)
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I like the look of the front of that car, it is the first new car that looks happy. I do wonder though if the 80% in 5 minutes is from 0% or 20%, and where that would be practical to do without specialised grid connections. Rough calculations: 0.2kWh/km and 500km range gives 100kWh. They must be charging at about 1MW to get a 5 minute charge. That is like a small power station's worth of power.
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Old 10-09-2020, 02:40 PM   #3576 (permalink)
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Old 10-09-2020, 03:15 PM   #3577 (permalink)
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Old 10-09-2020, 03:49 PM   #3578 (permalink)
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Could be a CyberCityHawk if it was in 304 stainless steel. It's got the chamfered front corners and longitudinal razor edges.
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Old 10-09-2020, 05:44 PM   #3579 (permalink)
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Lineal descendent of the U.S.ARMY, Piasecki VZ-8 Airgeep.
I saw something about Cormorant(sp?).

Last edited by sgtlethargic; 10-10-2020 at 12:49 PM..
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Old 10-09-2020, 06:33 PM   #3580 (permalink)
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Quote:
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Could be a CyberCityHawk if it was in 304 stainless steel. It's got the chamfered front corners and longitudinal razor edges.
304 SS has about 1/6 the strength-weight ratio of 6061 T-6 Aluminum (the most common aircraft alloy.) It seems an unlikely choice for a vehicle which already has undersized, inefficient lifting elements.
The SR-71 needed SS for the heat resistance and oxidation resistance when hot, but a new industry was created to use Titanium for barely acceptable heat resistance at half the weight.

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