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Frontal crash test.  (Source: Tesla Motors)

Side crash test.  (Source: Tesla Motors)

Aftermatch of rear crash test.  (Source: Tesla Motors)

  (Source: Tesla Motors)
Tesla Motors' highly anticipated Roadster comes closer to fruition

Tesla Motors' Roadster has been in development for quite some time now, but it appears that there is finally light at the end of the tunnel for the project team.

Malcolm Powell, Tesla Motors' Vice President of Vehicle Integration, announced yesterday that The Tesla Roadster has passed all Federal Motor Vehicle Safety Standards (FMVSS) and is legal for sale in all 50 states.

"Thanks to great design, structural analysis, build quality and well run test management, we have successfully completed the entire suite of dynamic impact testing to meet both FMVSS and, as importantly, our own very strenuous internal performance targets," said Powell. "This is a great achievement for Tesla; it takes us another (major) step closer to our final goal and is another demonstration that EVs are as real as any other vehicle on the road."

The Tesla Roadster performed admirably in front, rear and side crash tests. "I always find it interesting when people say, 'Isn't it dangerous carrying all those batteries around?' Well I don’t know about you, but I’d rather carry a load of relatively inert battery cells than 10 gallons of highly volatile, flammable liquid," added Powell. "I will not comment on how other companies design their vehicles but at Tesla, we have paid great attention to the integrity of the design for crash management."

In addition, the vehicle passed basic rear view mirror, lighting and windshield defogging/defrosting tests.

Production of the $100,000 roadster will begin on March 17 although the first models to roll off the assembly line will come equipped with "temporary" transmissions.

Tesla claims that the temporary transmissions are of a design that has been road tested more than 100,000 miles, so owners shouldn't be too concerned about reliability or safety. Performance, however, does take a nose dive -- the first production models will only accelerate 0-60 in 5.7 seconds instead of 4 seconds as previously promised.

The temporary transmissions will be replaced with production-level hardware at Tesla Motors’ expense when it is available.

The Tesla Roadster is loosely based on the aluminum-intensive Lotus Elise and features an electric motor powered by 6,381 lithium-ion cells. The projected range for the two-seater is just over 200 miles.



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RE: This is nice but...
By masher2 (blog) on 1/25/2008 12:07:24 PM , Rating: 2
> "200 miles is 200 miles, regardless of if you are doing 100mph or 40mph, the range is pretty much the same "

As a previous poster points out, this is incorrect. The curve should be a little flatter than that of an IC engine, but still heavily influenced by speed and, even more so, acceleration patterns.

I'm sure a jackrabbit driver could drop the published 200 mile range down to 50 miles or so, simply by driving the vehicle hard.


RE: This is nice but...
By Screwballl on 1/25/2008 12:44:30 PM , Rating: 2
Maybe in a SUV with a flat front but this is a highly aerodynamic vehicle that should see very little drag at any speed under 100mph (not accounting for cross winds or headwinds). We are talking 190 miles at 100mph or 210 miles at 40mph.
The IC engine is reliant on aerodynamics, constant RPMs, smaller vehicle/engine size and/or mediocre speeds to achieve better gas efficiency. If you are not moving/idling, it uses gas and power that affects gas mileage. With battery power, aerodynamics is the only real factor. If you are not moving then only the electrical components are using power (radio, A/C, heater). Even if you do that 0-60 in 6 seconds repeatedly, you should still see close to 200 miles since the drain is the same whether you're doing it in 6 seconds or 20 seconds.

Now the long term storage capacity of the battery may be reduced with long term "hot rodding" but if the transmission is only rated for around 100K miles then that should give out long before the battery capacity becomes an issue. Plus as Tesla may be replacing the transmission, they may also come up with a battery upgrade a few years down the line that will be replaced for free (or small fee) at that time as well.


RE: This is nice but...
By masher2 (blog) on 1/25/2008 12:58:45 PM , Rating: 2
> "but this is a highly aerodynamic vehicle "

First of all, it doesn't look "highly aerodynamic" to me. The sports car look isn't as efficient as it appears. A Lamborghini Countach, for instance, isn't much more aerodynamic than a Hummer H2...and both are far worse than a simple Toyota Camry.

Second of all, you forget one simple fact. At cruising speed, *all* the energy expended is due to drag (aerodynamic, road, and drivetrain). All these are either linear or quadratic functions of velocity....but at high velocities, quadratic terms dominate, no matter what the drag coefficient is.


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