RE: McLaren Speedtail: Geneva 2019

RE: McLaren Speedtail: Geneva 2019

Monday 4th March

McLaren Speedtail: Geneva 2019

McLaren confirms 1,070hp for its petrol-electric hypercar ahead of public debut - including 313hp from new battery tech



Given Ferrari is revealing a new V8 berlinetta at Geneva and Lamborghini has released convertible versions of both its supercars, you could be forgiven for thinking McLaren might be a little left out, showing a GT3 car and MSO specials.

Not to be outdone, it has taken the opportunity to confirm new details about the upcoming Speedtail's powertrain. Previously we knew the car would be capable of 250mph, making it the fastest McLaren ever; now we know exactly how it will go about achieving that.

A parallel hybrid without any EV range, the Speedtail will feature the familiar 4.0-litre turbo V8, with 757hp and 516lb ft, plus a new electric powertrain providing 313hp and 258lb ft, for a total of 1,070hp and 774lb ft.

 

More interesting still are the advances in battery technology. The batteries in a Speedtail weigh nearly half that of a P1's battery pack at 52kg, yet boast four times the energy density. So in 2013 96kg of batteries enabled 179hp and 192lb ft; just half a dozen years later and 52kg proffers 313hp and 258lb ft. Which is pretty incredible.

The Speedtail will also be fitted with with wireless charging (see diagram), and can't be plugged in. As for how long the powertrain can stay at the full 1,070hp, it's currently too early to tell. You'll remember the requirement for a P1 was a flat out, full lap of the Nurburgring; given the Speedtail's more relaxed remit - 250mph v-max notwithstanding - it might be less than that.

Whatever the case, this sort of information promises to keep interest in the Speedtail maintained for a little while yet. Expect a little more soon!

Author
Discussion

Nerdherder

Original Poster:

617 posts

38 months

Monday 4th March
quotequote all
Exciting! Looking forward to this one.

tubs

43 posts

148 months

Monday 4th March
quotequote all
Maclaren should be applauded for building something that irrelevant and bonkers in this day and age!! I love it.

loudlashadjuster

3,227 posts

125 months

Tuesday 5th March
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Willing to bet the Speedtail batteries don't have four times the energy density of the P1's. That would mean McLaren either opted to fit the P1 with some duff old lead-acid cells, or they've made some kind of huge, paradigm-shifting battery chemistry breakthrough that the rest of the planet is somehow unaware of.

The ability to get energy out of the batteries quickly may be markedly increased, along with more powerful motor(s), but I doubt the cells themselves have anything more than an incremental energy density increase as might be expected with the general trend for improvement in the six years since the P1 was developed. The fact that it has zero EV-only range tells us something about the way in which the Speedtail uses its electrons, a much bigger hit for, presumably, a shorted period.

You need to be careful with stuff like this, duff info travels far and wide.

corden

62 posts

75 months

Tuesday 5th March
quotequote all
Oh my gosh, those battery stats are painful to read.

It's 2019 and we still have no clue about how it all works do we...

dollyboy

112 posts

115 months

Tuesday 5th March
quotequote all
loudlashadjuster said:
Willing to bet the Speedtail batteries don't have four times the energy density of the P1's. That would mean McLaren either opted to fit the P1 with some duff old lead-acid cells, or they've made some kind of huge, paradigm-shifting battery chemistry breakthrough that the rest of the planet is somehow unaware of.

The ability to get energy out of the batteries quickly may be markedly increased, along with more powerful motor(s), but I doubt the cells themselves have anything more than an incremental energy density increase as might be expected with the general trend for improvement in the six years since the P1 was developed. The fact that it has zero EV-only range tells us something about the way in which the Speedtail uses its electrons, a much bigger hit for, presumably, a shorted period.

You need to be careful with stuff like this, duff info travels far and wide.
I was about to say the same myself, the article seems to be describing extracting circa twice the power output from a battery pack half the weight (presumably half the number of cells) and therefore drawing circa 4 times the current, which is completely different to four times the energy density.

Edited by dollyboy on Tuesday 5th March 10:16

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mondeomk4

64 posts

32 months

Tuesday 5th March
quotequote all
Aside from the statistics I like the originality of the design,
especially for a new car under the mass of regulations,
and the lines are very attractive.

Onehp

1,017 posts

224 months

Tuesday 5th March
quotequote all
How far can you push/get the car = Force x distance = energy = work = J (joule) ~ Wh (Watt x hour) ~ battery capacity ~ or energy contents is a tank of gasoline

How fast can you make (~push) a car go = Force x speed = power = W ~ kW ~ hp ~ bhp = energy / time = amount of energy released in a certain time ~ V x I (voltage times current) ~ amount of fuel an engine burns in a certain time (x efficiency)

pimpchez

880 posts

124 months

Tuesday 5th March
quotequote all
loudlashadjuster said:
Willing to bet the Speedtail batteries don't have four times the energy density of the P1's. That would mean McLaren either opted to fit the P1 with some duff old lead-acid cells, or they've made some kind of huge, paradigm-shifting battery chemistry breakthrough that the rest of the planet is somehow unaware of.

The ability to get energy out of the batteries quickly may be markedly increased, along with more powerful motor(s), but I doubt the cells themselves have anything more than an incremental energy density increase as might be expected with the general trend for improvement in the six years since the P1 was developed. The fact that it has zero EV-only range tells us something about the way in which the Speedtail uses its electrons, a much bigger hit for, presumably, a shorted period.

You need to be careful with stuff like this, duff info travels far and wide.
As a man that has spent the last 10months talking about cell chem and what it means for a EV for a living id be very interested in the ah rating for the cells/pouches. In short noway on earth its 4x like for like , e-machine efficiency`s have came on leaps and bounds however

Terminator X

7,408 posts

145 months

Tuesday 5th March
quotequote all
Well done McLaren, looks awesome and appears to go like stink too. Billionaires queuing up as we speak.

TX.

smilo996

1,492 posts

111 months

Tuesday 5th March
quotequote all
Interesting all round, except the hideous looks. Beautiful and functional design is not something the new incarnation of McLaren has excelled at.
Would still prefer an F1 if I could which I can’t😂

Buzz84

680 posts

90 months

Tuesday 5th March
quotequote all
Pistonheads article said:
The Speedtail will also be fitted with with wireless charging (see diagram), and can't be plugged in
See diagram?

There isn't a diagram - that's sloppy journalism, copy and pasting from source material and not bothering to proof read it...

loudlashadjuster

3,227 posts

125 months

Tuesday 5th March
quotequote all
Buzz84 said:
See diagram?

There isn't a diagram - that's sloppy journalism, copy and pasting from source material and not bothering to proof read it...
PH? Sloppy? You don't say...

Still no correction on the battery stuff, don't hold your breath for them to fix this either.

CraigyMc

10,974 posts

177 months

Thursday 7th March
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Energy and power are two different things.

HighwayStar

2,274 posts

85 months

Tuesday 12th March
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I like Mclaren stuff, not sure what I make of the Speedtail though. Very Gerry Anderson
https://youtu.be/ESANChyykpc