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Joined: Mar 2005
Posts: 1,803
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Back on subject- here's a US built automobile, available today for US$50 - $100,000 depending on model. New Tesla model S, family sedan. clap

http://www.youtube.com/watch?v=LoFVO31CbE0

more: http://www.youtube.com/watch?v=1kCG-WqpVnI


Wood work but can't!
Joined: Mar 2005
Posts: 1,803
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While reading up on the various full electric and hybrid car models now available, and despite the much-vaunted new battery technology, it struck me how little real progress is being made for a practical, long life, high energy vehicle battery. Crunching numbers, it seems that new models have very modest actual specific energy, at the road, of less than 100Wh/kg. Gasoline has 10,000Wh/kg to put that in perspective, so even at 25% efficiency it seems far superior, [and take away the Gummint subsidies and sales would probably plummet]. Toyota use NiMH in the non-plug in Prius, [Prii?], restricted to about 35-75% of full-cell capacity for life-extension - and which will give no better SE in practice than Edison’s 1906 alkalines, albeit at higher discharge amps - and no gassing – but Edison’s cells will literally run for 100 years! Li-ons are similarly restricted. Go lower than 20% of full charge and the cells are ruined, and they deteriorate fast, no matter how they are treated. The new Tesla Sedan has a claimed 200 mile range - but the battery is a mighty slab that occupies the entire floor pan, 8” thick or more. Here, like Brunel’s first transatlantic steamers, range has been won by building a really big, big ship, reducing drag to 0.24 and filling it with coal to the gunnals! frown


Wood work but can't!
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twh Offline
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I'll bet on hydrogen fuel cells.

Joined: Mar 2005
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..and here's the genius whose vision has ushered in the Electric Age. This interview is with one of the most extraordinary visionaries alive today, Elon Musk: PayPal, Tesla, SunCity, SpaceX. If you can't watch it all, just look at 17:40>. Incredible.
http://www.youtube.com/watch?v=IgKWPdJWuBQ


Wood work but can't!
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Since a Prius was discussed.... laugh


[Linked Image from static.neatorama.com]

I had been looking for this photo for a while,lost the link.

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