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Accelerated Composites - Aptera - 330 mpg Hybrid Car

 
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Feb20-09, 06:54 PM   #18
 
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Accelerated Composites - Aptera - 330 mpg Hybrid Car

Quote by mgb_phys View Post
Drag coefficent of an unfaired bike = 0.95
Drag coefficent of Vw 1L = 0.159

Interestingly Cd depends on smoothing out the details of the airflow as much as general shape.
A Hummer has the same Cd as a lotus seven (tiny 2 seater open cockpit British sports car) but a lot more frontal area.
Sure, as expected since a normal sedan has Cd~0.2. The mass and tire dependent rolling resistance will be 3 or 4:1 in favor of the bike/scooter.
Feb20-09, 07:07 PM   #19
 
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Quote by mheslep View Post
A 100mpg ICE car sounds doable - a reach but doable. ...
Quote by mgb_phys View Post
..A Fiat panda with 1L diesel used to do almost that nearly 20years ago.
A simple google search on the Panda diesel shows that's an overstatement. ~70mpg now, not 100mpg, and certainly not 20 years ago.
Feb20-09, 10:25 PM   #20
 
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Quote by mheslep View Post
A simple google search on the Panda diesel shows that's an overstatement. ~70mpg now, not 100mpg, and certainly not 20 years ago.
The original Panda 20years ago only weighed a fraction of the modern one (a new meaning to the word tinny!) it sold with a 600cc petrol engine, put a modern small diesel in it and it would do that (at least for real gallons)

They even had a 4x4 version of the orignal, it was an interesting drive - not exactly overpowered, but if you got stuck 4 of you could lift it out of the hole.
Feb21-09, 03:23 PM   #21
 
Quote by russ_watters View Post
The company will suck more money from sucker dreamers, then go belly-up. It's an impressive scam they've been able to pull, actually. Reminds me of the solar power tower.
This seems to be the cool thing to do these days. I can think of 5 venture start ups that have or are currently pulling this scam and of course people buy into it hook line an sinker.

BTW, we got about a 1 ft of snow today so far. If I owned one of those, how the hell am I suppose to get anywhere?
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