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Open Heart Surgery on the Tesla Roadster Electric Car

by Michael Graham Richard, Gatineau, Canada on 08.28.08
Cars & Transportation

Tesla Roadster Electric Car photo

Quick Look at Tesla's Insides
Number 1 on the photo above is the AC electric motor. It might look a bit like a vacuum cleaner, but this beast can generate 248 hp (185 kW), spin up to 13,000 RPM, and its max torque of 200 ft-lb is produced from 0-6,000 RPM.

Number 2 is the transmission. After some problems and a temporary two-speed transmission, the Roadster now will have a one-speed transmission with a drive ratio of 8.27:1 that allows it to do 0 to 60 mph in around 4 seconds.

Number 3 (above and below) is the power electronics module. One of its tasks is to recapture energy during braking to recharge the batteries, and to make sure that acceleration during a fast start stays under control and that everything stays smooth (if the car wasn't programmed to hold back, it could be downright unpleasant for the people on board).

Number 4 (above and below) is the battery pack. 6,831 lithium-ion cells arranged into 11 modules connected in series with a lot of safety sensors and cooling systems to avoid catastrophic cell failures. Full charge time is around 3½ hours, it contains about about 53 kW·h of energy, and it weights between 900 and 1000 lb (400-450 kg). Estimated life: over 100,000 miles (160,000 km).

For those who are curious to know, we did a post about what happens to a Tesla battery at the end of its life.

Tesla Electric Car photo

Number 5 is the Tesla Roadster's body and frame. It is made of carbon fiber and aluminum to keep the car as light as possible, requiring less power to move it and extending its range.

Electric Cars
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17 Electric Cars You Must Know About

More Under the Hood of Tesla Roadster
Tesla Roadster: A Look Under the Hood

Comments (13)

Is that blue fluid next to the batteries an antifreeze mix of some sort to watercool the batteries? It looks like the back of the car to me, so I think that'd be a strange place to put the wiper fluid.

Out of curiosity, would climate control for the batteries be beneficial enough to help range? I know cooling is to keep them from exploding, which of course would seriously hurt the range. But say the system could also heat them on cold days so that the cars would be useful on a New England winter day, since I hear electric cars lose a ton of range in winter?

jump to top Tim says:

Drool...
gimme, gimme, gimme

jump to top Anonymous says:

AC motor, not DC.

http://en.wikipedia.org/wiki/Tesla_Roadster#Motor

http://www.teslamotors.com/performance/tech_specs.php

kind of a big difference

--
MGR: Thanks, fixed.

jump to top vboring says:

Yah!! this will be great for all the people who can afford a $100k car, since gas prices are hitting them the hardest.....

jump to top elevendog says:

"Yah!! this will be great for all the people who can afford a $100k car, since gas prices are hitting them the hardest....."

way to totally miss the point

jump to top Anonymous says:

Enlighten me then, what is the point?

jump to top elevendog says:

Yup, you missed the point. All high-tech stuff starts out expensive but gets cheaper as it is mass-produced (an example: a 103-inch LCD TV was sold for over $100,000 for the last year, now its going mass-produced and the price is dropping to $60,000) (yeah, its a bad example of "too much", but a good example the price drop).

Round 1: Tesla is affordable by Joe Upper Class
Round 2: Tesla 2, Chevy Volt, Prius Plug-In option (all due in one to three years), affordable by Joe Upper Middle Class
Round 3: Everything else in 5+ years, affordable by Joe Six Pack

jump to top Doug (the original) [TypeKey Profile Page] says:

Never was there a more insignificant and irrelevant
car than the exorbitantly overpriced and underperforming Tesla roadster. Even Lotus' designers couldn't save this little flop from the junk heap of history. Starting with a totallly obsolete battery pack consisting of 8671 cells, each one ill-desinged for this application as well as being a member of a long since obsolete lithium ion generation one technology, the whole car is an
afterthought of poor thinking. For over $100,000 you would expect a vehicle to be able to handle a
relatively short trip to a destination 125 miles down the road. This little gem can't do that, or very much
else. battery-only electrics are the height of stupid, as in Hollywood and Silicon Valley dumb and dumber. When the Fisker Karma comes out, after
Tesla quits trying to sue them into nonexistence ,
the Tesla will be consigned to the junk heap of history by a car that not only looks twice as good, carries three times as many passsengers, can take you anywhere you want to go, all the while avoiding virtually the same amount of gasoline and emissions as the totally impractical Tesla, and get there plenty fast. DSorry, Tesla, your day in the sun, compliments of some brainless Holltwood environmentalists is just about over.

jump to top ArthurGlen [TypeKey Profile Page] says:

Wow, someone is emotional.

The market for cleaner cars is wide open, and there's space for more than one approach. I love series hybrids like the Volt and Fisker, but they also have downsides (you carry that engine around all the time, you still have most of the downsides of gas cars when it comes to maintenance, etc).

Tesla has mentioned that they are considering making hybrids too,btw.

jump to top Anonymous says:

Ah yes arthur glen is surely a drill more oil will solve everything republican.

jump to top steve says:

What IS the deal with the rabid fanboy-ism? The difference between the Tesla and the Karma, for one, is that you can actually go and buy a Tesla. Well, you can't really because there's a waiting list, but they are out there on the roads.

Yes, I think plug-in/series hybrids are the way forward for the foreseeable future, but the fact is that there isn't one out there yet (other than expensively modded Priuses). The Karma seems to be a vaguely promising project, but I'll believe it when they actually start rolling off the production line - FWIW, until there were credible reports of Teslas being shipped to buyers, I still had suspicions of the Tesla project being just vapourware.

But still - what's with the "my favourite technology is the only decent one, everything else is crap and irrelevant and a waste of time"? That attitude is not going to solve our energy/climate problems...

jump to top Julius says:

the numbers don't match up.

Picture 1: Number 3 is I don't know what, maybe the power module, number 4 is definitely the frame, not the battery

Picture 2: Number 3 is definitely the battery pack (not the power module) and number 4 is definitely the power module (not the battery pack), number 5 is a bumper, which needs labelling, apparently.

jump to top Andyduncan says:

Tesla, TH!NK, AC Propulsion, Lightning Cars, Liberty Electric Cars...

It's all necessary. As Gordon Brown argues uncontroversially; "a sustainable economy is THE challenge for this century"

And, obviously, finite fossil fuels cannot be a part of a sustainable economy.

Cheers

Barry Shrier


jump to top Barry Shrier says:

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