Tag Archives: Tesla Roadster Sport

The Fastest Electric Vehicles on Earth

Electric vehicles have full torque, all the time, with no transmission, clutch, oil pan, exhaust system,or  fuel tank to weigh it down, it is no wonder they are some of the fastest land objects on wheels. I was asked to include this speedy infographic on my website, and I was happy to oblige. Credit to carfinance24/7, interesting stuff.

2010 Tesla Roadster Sport

This is a pretty cool video on the Tesla Roadster Sport.

First, there is a pretty informative overview of the interior. The Roadster now has a working glove compartment, alright! The transmission selector is now four buttons on the center console instead of a traditional lever. You can select from drive, neutral, reverse, and park. The console also features a port for your ipod or iphone, which from experience, really comes in handy nowadays. Accents on the car are all true carbon fiber, which is rare, because of how commonly it is faked.
Tesla Roadster Sport

The host also gives the battery of the Tesla Roadster Sport a once over. Giving the predictable, “There’s not much to look at here” quip. The Tesla Sport only has a single speed, so there is no complicated transmission bungling up the power to the wheels. He notes the car has 288 hp as apposed to the 248 of its predecessor; which gives it a 3.7 0-60 acceleration, .2 second quicker.

The best part of this video in my opinion is the host’s explanation of the Roadster’s regenerative brakes. When you hit the brakes, you are still using friction braking. The regenerative braking is when you lift off the gas, and you are slowed down by the regen brakes to give a “synthetic compression braking”. So it gives you that pulled forward feeling like you get when you lift off the gas in too low a gear in a regular vehicle.

Inside the Tesla Roadster Sport

Tesla Roadster Sport
Tesla recently announced its Roadster Sport edition. To be succinct, the Sport powers from 0-60 mph in 3.7 seconds (.2 seconds faster than the base model), has a sweet HEMI muscle car like orange and black paint job, Yokohama performance tires, custom suspension, and blacked out rims.

So how do you get more juice out of an electric motor? You can’t add performance headers and intakes or any fun widgets like turbo and superchargers. So Tesla hand wound the wires that wrap around the stator to create more power. The stator is the stationary part of an electric generator or electric motor. The non-stationary part on an electric motor is the rotor. Here is a picture of a traditional rotor (left) and stator (right):
Stator and Rotor


The stator is an electromagnet (see left), meaning when an electric current passes through it, the rotor is magnetically attracted to spin in a certain direction.  So if you hand spin the wires into the stator, you can pack more wires in, allowing more electrical current to pulse through each segment.  The more powerful current sequentially magnetizes each segment  and spins the attracted rotor faster.  Also, I’m not an electrical engineer so you can correct me in the comments section.

The Tesla Roadster is powered by a 3-phase, 4-pole electric motor, producing a maximum net power of 248 hp (185kW). The Sport Model, with its higher density, hand wound stator produces a maximum of 288 hp (215 kW). Both motors are designed for rotational speeds of up to 14,000rpm, and the regular motor delivers an efficiency of typically 90%, or 80% at peak power.  Couple this with Tesla’s new Powertrain 1.5, and you have one of the meanest electric machines ever produced.

Tesla Roadster Sport

Sources: Wikepedia: Stator, Tesla Motors, Jalopnik

Press Release:

Tesla Motors introduces Roadster Sport

SAN CARLOS, Calif.—(BUSINESS WIRE)—Tesla Motors Inc. began taking orders today for the Roadster Sport, a high-performance sports car based on the world’s leading all-electric, zero-emission vehicle.

The Roadster Sport does 0 to 60 mph in 3.7 seconds, compared with 3.9 seconds for the standard Roadster. It comes with a hand-wound stator and increased winding density for lower resistance and higher peak torque. In addition to Yokohama’s Ultra High Performance tires, the Roadster Sport has improved suspension with adjustable dampers and anti-roll bars that will be tuned to the driver’s preference.

The Roadster Sport starts at $128,500 in the United States and €112,000 (excluding VAT) in Europe. Deliveries begin in late June.

“This car can beat nearly anything in its price class – yet it is twice as efficient as compact hybrid sedans,” said Michael van der Sande, Tesla’s senior vice president of global sales, service and marketing. “If you refuse to compromise on performance or the environment, the Roadster Sport is your only option.”

The Roadster Sport is the first derivative of Tesla’s proprietary, patented powertrain. San Carlos, Calif.-based Tesla plans to begin producing the all-electric, zero-emssion Model S five-passenger sedan in 2011.

Tesla has delivered more than 150 Roadsters to customers, and about 1,100 people are on the waiting list. Customers who haven’t taken delivery may upgrade to the Roadster Sport.

“The Roadster Sport embodies Tesla’s spirit of continuous improvement,” said CEO, Chairman and Product Architect Elon Musk. “The Roadster has been a great success, but no one at this company remains satisfied with the status quo.