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Posted by admin | Posted in Green Energy | Posted on 07-11-2009

Tags: electric, energy, motor, science, tesla, tesla motors, tesla motors ipo, tesla motors model s, tesla motors stock, tesla motors wiki

How does the new Tesla Motors Roadster compare to GM’s older EV1?

Mileage per charge… charge storage capacity… acceleration and power… battery types etc… Will Tesla Motors and others be able to produce lower cost electric vehicles while yet maintaining a somewhat good balance with performance?

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The EV1 is in many ways the father to the Tesla Roadster. The AC drive technology pioneered in the EV1 is at the heart of the Tesla.
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The battery technology used in the EV1, called NIMH, is still ground-breaking. Sadly, a major oil company bought the patents to NIMH, and they have chosen to no longer make those batteries available for electric vehicles. Luckily, the Li-Ion batteries used in the Tesla have an even higher energy density, giving that car a 250-mile range, almost double that of the EV1. Patents for Li-Ion batteries are mainly in the hands of Asian companies, beyond the reach of major oil companies.
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Power, with a decent sized electric motor, is an easy goal for an electric car. Electric motors have a much higher efficiency, and significantly wider powerbands than gasoline engines. This is how the Tesla can out-dragrace Ferraris and Vipers despite having a smaller-horsepower motor, and a much lower power-to-weight ratio than other sports cars.
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Cost, as with any other consumer product, is a function of market penetration. VCRs and DVD players did not become cheap until everybody started buying them. The same will be true of electric cars. An electric motor is far, far simpler and easier to manufacture than a gasoline engine. Electric motors have only one moving part! If electric vehicles ever catch on, cars will be cheaper than they are now, and last much longer – because electric motors almost never need repair.
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Proof electric cars can be cheap:

- Here’s a small businessman who makes new electric cars out of old 1980’s car bodies. Prices start under $5000:

http://grassrootsev.com/convert.htm

-And here are some Chinese electric cars (EVs are much more popular over there) which are priced in American dollars – this is what we could buy them for, if they were available here. Prices start at $6500:

-http://www.fevehicle.com/services.html

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