Showing posts with label Electric Supercar. Show all posts
Showing posts with label Electric Supercar. Show all posts

Saturday, August 16, 2014

Renovo Motors unveils Shelby CSX9000 based electric supercar

Taking the shape of a muscle car from an earlier era, Renovo Motors has unveiled the Renovo Coupe all electric supercar.  The car, based on a factory-modified Shelby American CSX9000 rolling chassis (“Cobra Daytona Coupe”), has a 0-60 miles/hr time under 3.4 seconds and a top speed over 120 miles/hr.  That's faster than the Tesla Roadster, FWIW.


That performance is generated by a mid-mounted dual-motor drive train, with "sequential axial-flux motors" producing more than 370 kW (500 hp) and 1,000 lb-ft (1,356 N·m) of torque.  It has a single-gear transmission, and various energy mappings for various driving conditions.    The power ramps to FULL in under 37 milliseconds - essentially full-torque-at-zero-RPM.

The battery pack is built using the company's patent-pending modular battery pack system.  Instead of making the pack as one block, it's spread around the car - which supposedly lets Renovo optimize the weight distribution.  It is also supposed to support fast charging in under 30 minutes, so that it would be a great track day car allowing multiple runs in one day rather than spending the day waiting for a recharge.

Having been to more than a few race tracks I can say that high power electricity supply is a major problem, and therefore achieving a 30 minute recharge at most tracks will most likely require special arrangements.  For example, at the 2014 REFUEL, Tesla Motors brought the hardware for a full Supercharger station so the Model S's could quickly recharge between sprints.  However, Laguna Seca was only able to support the required electrical service because when MotoGP comes to Laguna Seca the press/media tent and a bunch of other MotoGP infrastructure is set up at the same spot, and therefore the Laguna Seca Raceway already had a massive electricity supply.

Specs:
  • 0-60 miles/hr in under 3.4 seconds
  • 1000 ft-lbs of direct-drive torque instantly available
  • Twin sequential axial flux motors producing over 500 horsepower
  • Incredible throttle response with full power available in just 37 milliseconds
  • Patent-pending modular lithium ion battery technology
  • A curb weight of just 3,250 lbs
  • 30 minute quick charge and 5 hour level 2 charge
  • Genuine, factory modified Shelby American CSX9000 rolling chassis
  • Flexible control system with dynamic in-cabin regen adjustment
  • Proudly built in Silicon Valley, USA
  • Entering limited production in 2015
  • Featured at the 2014 Pebble Beach Concours d’Elegance
  • Preview at the Gold Rush Rally to benefit the Taylor Lynn Foundation

“Renovo Motors sought to create an aspirational vehicle that demonstrates the performance, control, and excitement that is possible with EV technology,” said Renovo’s CEO Christopher Heiser. “We have poured our passion and innovation into the Coupe in an effort to deliver a truly amazing driving experience, and we’re honored to present the Production Prototype of our car at the Concours d’Elegance.”

“Our motivation to design and build our cars is not artificially tied to any particular propulsion technology,” notes Jason Stinson, Renovo Motors CTO. “Simply put, we can do things with electric vehicles that can’t be replicated by any other platform. Exploring these areas, reducing them to practice, and building them into our products is at the core of what we do best.”


The company was founded in 2010, is based in Silicon Valley, and is normal for startup companies located here, has been operating in stealth mode ever since with a staff of just 3 people.

Being located in Silicon Valley one should expect a venture capital company in the background.  Tony Schneider, the former CEO of Automattic, lists himself as an advisor to Renovo Motors and in a blog post explains that True Ventures is an investor in Renovo. He says: "The team at Renovo is world class and the car is spectacular – I’ve witnessed its acceleration and it’s totally awesome!"

The Renovo Coupe is now on sale for the princely sum of $529,000

Sources:  Green Car Congress, Renovo Motors  (all images copied from Renovo's website)



Friday, March 1, 2013

EU to explode electric car stereotypes with VOLAR-E 1000 horsepower electric supercar

Spanish engineering firm Applus+IDIADA just demonstrated a wicked fast electric race car near Barcelona at the Circuit de Catalunya during the F1 Test Days.  The VOLAR-E is a custom built electric race car sporting four electric motors, 1000 horsepower, 1000 nM torque, and specs, design and look that's suspiciously similar to the Rimac Concept One electric supercar.  Going by the comments on both the YouTube video and Applus' Facebook page there may be a little bit of cross border rivalry going between Rimac fans and Applus.

Applus VOLAR-E
The specs are:- 4x electric motors, 1000 horsepower, 1000 nM torque, 640 volt 38 kilowatt-hour battery pack, a DC fast charge system capable of a 15 minute recharge, a fancy touch panel control system in the cockpit, four driving modes, a torque vectoring system, vehicle dynamics control, etc.  The 0-60 time is 3.4 seconds.

Comparing these specs to the Rimac Concept One, well, let's just say these are very similarly spec'd cars.

Applus got the contract from the European Union to build this car in October 2012.  The purpose stated at the time was to "help overcome the current technological and social barriers of electric cars and promote acceptance of electric vehicle technology by the public and the mass introduction of this type of vehicle into our society."

In other words - by building such a car the EU wants to blow up the "slow boring ugly golf cart" stereotype.

Going by postings on Applus' Facebook page there isn't much doubt that Rimac had a huge hand in building this car.   A video of the workshop clearly has a Rimac logo on the wall, and a post covering the battery pack design shows battery modules from Rimac.

By the way - the battery pack is made of 10 modules, each are 60 cells in a 20S3P (3 parallel'd cells, with 20 in series) for 64 volts 60 amp-hours per module.  That equates to the 640 volts overall system voltage.

The battery chemistry is lithium-iron-phosphate which is a curious choice for a performance vehicle.

Other than the little controversy over who actually built the VOLAR-E, going by the video it does the job of blowing up stereotypes.

Source: Applus, VOLAR-E, the wicked fast 1000 HP electric race car on a mission to explode stereotypes


Saturday, September 29, 2012

Nesesis, electric supercar built by Ecotricity, sets UK electric car land speed record

The Nemesis, an electric supercar built by UK electricity supplier Ecotricity, broke the UK electric car land speed record on Thursday. The Nemesis, based on a Lotus Exige chasis, driven by Nick Ponting at Elvington Airfield near York, has set the new UK electric car land speed record at 151 miles/hr, breaking the 137 miles/hr record from a couple years ago set with a car built by Sir Malcolm Campbell and driven by Don Wales.



The Motor Sport Association was on hand to officially verify the record.  The team made two pairs of runs, with the record in each case being the average of two runs in opposite directions.  In the first pair of runs the team broke the existing record with a 148 miles/hr average speed.  On the second pair of runs they upped the record to 151 miles/hr.

Because the Nemesis was built by an all-British engineering team, based on  a British designed and built car (Lotus Exige), sponsored by a UK wind energy company, on a UK track, the company is playing up the "all British" aspect of the record.  It's possible that the electric motors and other components are also from British companies, as there is at least one British company (EVO Electric comes to mind) making a suitable electric motor.

The Nemesis was built on a Lotus Exige bought second hand on eBay. Ecotricity's spec sheet for the car says it has a 0-100 miles/hr time of 8.5 seconds, two 125 kW motors, giving 330bhp, and 600Nm of torque. The battery pack is 96 x 100 A/h 4.2 V pouch lithium polymer cobalt cells for 36 kilowatt hours of electrical capacity. Driving range is 100-150 miles depending on driving habits, and whether you can keep the car at a reasonable speed. It cost under £1 million pounds to build, and an 18 month build time.

Mr Vince said: “This is brilliant. We built the Nemesis to smash the stereotype of electric cars as something Noddy would drive – slow, boring, not cool – and I think we’ve done exactly that today. Hopefully this will further stimulate debate about the future of transport in Britain and how we’ll be getting around when the world runs out of oil. What we’ve been able to demonstrate is that wind-powered cars are not just feasible, but can be a load of fun.”

See: Ecotricity's Nemesis breaks UK electric car land speed record

Ecotricity: http://www.ecotricity.co.uk/about-ecotricity/eco-labs/nemesis and http://www.ecotricity.co.uk/news/news-archive/2012/the-nemesis-smashes-uk-electric-car-land-speed-record