This “World’s Fastest Electric Race Car” Features 3 Formula E Electric Motors

MAR 12 2018 BY AUTOSPORT 7

The Perrinn prototype billed as the world’s fastest electric racing car will be powered by three Formula E motors.

British constructor Perrinn, which has ambitions to take an all-electric car to the Le Mans 24 Hours, has agreed a deal with an undisclosed FE powertrain supplier to provide the motors for its LMP1-based 424 prototype.

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The motors, two powering the rear axle and one the front, will give the 424 a power output of 750kw, equivalent to just over 1000bhp.

Marque founder Nicolas Perrin told Autosport:

“We have agreed a deal with one of the existing FE suppliers to use its season four [2017/18] powertrain, but we can’t say which one until the business plan is in place.”

“The FE motors are limited by regulation to 200kW, but they can go higher and we will be using them to their full capacity, which gives us the 750kW or 1000bhp.”

The Yorkshire-based team will buy off-the-shelf battery cells to assemble its own batteries, arranged in nine modules each containing 64 cells.

Perrin, a former Williams Formula 1 design and race engineer, is now working to raise the £2million to build the 424 and undertake initial testing.

He is confident that he can have the car up and running six months after the build process begins.

Perrin believes a car that will weigh in at 1200kg, 330kg more than a hybrid P1 contender, can achieve lap times between those of LMP1 and P2.

A top speed of 220mph (355km/h) and acceleration from 0 to 100km/h in two seconds have been targeted.

The aim is to use the 424 as a test bed for future developments in electric-vehicle technology, leading up to a Le Mans assault in the first half of the next decade.

The Perrinn, which was conceived as a privateer LMP1 contender, has been substantially redesigned for the all-electric application.

“The philosophy is the same, but we had re-thought the whole car around the integration of the batteries and there are a lot of detail differences,” he said.

The car is 200mm longer than the maximum allowed in LMP1 to accommodate the batteries, which will have a total weight of 400kg.

These will be integrated within the monocoque, as will be the case in the second-generation Spark/Dallara FE car for season five.

“We originally thought about bolting the batteries on the back of the chassis, but what we have come up with is a much neater way of doing it,” explained Perrin.

Perrin believes that technological advances could allow an all-electric prototype to race at Le Mans without the need to change batteries “within four to five years”.

“Our plan is to build a new car every year to incorporate advances in battery and charging technology,” he said.

Don Panoz’s Green4U electric car will undergo a change of battery at each pitstop should it land the ‘Garage 56’ grid slot for an experiment at Le Mans in 2019.

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7 Comments on "This “World’s Fastest Electric Race Car” Features 3 Formula E Electric Motors"

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Michael
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Michael

So, slower than the new Rimac. Got it.

Can we give the “fastest” thing a rethink?

You can’t be fast at anything with just a CAD drawing.

Oglark
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Oglark

Packaging matters. This is a smaller car.

1Kaspars
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1Kaspars

2016 Pikes Peak International Hill Climb
electric eO PP100 had 1190 kW, set a new record for electric vehicles.

Josh
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Josh

Slower than Rimac and the roadster ? WTF these people don’t have internet to get up to speed ?

Empire State
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Empire State

While it’s impossible to tell which “car read about on the internet” is faster, given the few specs in the article, and the facts that both the new prototype road car and the as yet unbuilt prototype race car are not yet available, one thing is clear. Some of those making comments here don’t understand the difference between what’s needed in a race car and what makes press in a quick road car like a hypercar. It’s not the people behind the Perrinn who lack information depsite their having access to the internet.

Tim Vollmer
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Tim Vollmer

Racing an electric at LeMans will be all about efficiency, not ultimate performance. Having the battery capacity to run decent stint lengths between pits and the ability to swap the battery quickly is the make or break issue.

In this respect the Formula E motor is well suited to the job; Formula E teams push for optimal efficiency. Because the battery capacity available is well short of being able to run the car full steam for the entire race, finding 1 or 2% more motor or inverter efficiency means you can have the throttle pegged a full second or two longer every lap. Cooling a motor that’s full power for so long is also very difficult, the more efficient it is the less heat it generates in the first place.

Its also an off the shelf solution, which means less cost, allowing more for the battery, where it really matters.

Bolt driver
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Bolt driver
You can’t compare pikes peak to 24hr of Le Mans. Pikes peak is ideal for electric vehicles for two reasons, 1) it’s short, only 12 miles. 2) the elevation removes over half the hp of a normally aspirated ice. 24hr cars get maybe 6 mpg. So even if an ev is 4x as effiecient as an ice it would use 1.4 kwh/mile. Race distance is about 3000 miles. So that is 4,200 kwh of energy needed at a minimum. I would expect it would be closer to 6000kwh as I would expect closer to 3x as effient. With a battery weight of 400kg we can guess at a capacity of 74 kWh based on 185wh/kg(Alta motorcycle). At best case that would be 57 battery swaps or charges. Seems like battery technology has a ways to go before this is really feasible. I believe there is no way they can do this in 5 years with no battery swap or charge. Just driving 3000 miles on one charge with a 400kg battery would completely change transportation as we know it. if such a setup was available the long range semi would be easily achievable. I like my ev, but this sounds… Read more »