RE: Rimac C_Two: new details revealed

RE: Rimac C_Two: new details revealed

Tuesday 17th December 2019

Rimac C_Two prototypes begin testing | Update

We've seen it at motor shows and heard about the simulations - now the C_Two is on the road



What a couple of years it's been for Rimac. From revealing the ground-breaking C_Two at Geneva, to forging a partnership with Hyundai (and don't forget the Porsche alliance) to establishing a sales presence in the UK, it's made incredible strides forward in very little time. Now there's another huge advance coming, with the C_Two prototypes hitting the road.

"Following years of development and detailed computer simulations by the engineering team at Rimac, we are proud to share the C-Two prototype testing program on tracks and in testing facilities around the world", opens the press release. In fact, limit testing of tyres and suspension has already commenced with the 17 prototypes, with early 2020 set to see "fine-tuning of components before entering the pre-production phase".

The next step? The 1,900hp production car is going to be shown at Geneva, Mate Rimac stating that his "technical masterpiece" will boast "a new driver feel, highly-communicative handling and first-class dynamics". After that come deliveries, Rimac customers set to receive their Β£2m cars by the end of next year. Just in time to put head to head with the Lotus Evija and Pininfarina Battista, then...


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ORIGINAL STORY - 22.11.19

Of all the bonkers hypercars out there right now, you could argue that the Rimac C_Two is the most significant. Not because it's going to be expensive and very rare at €2m and just 150 units, but because the direct influence it has on others could be seismic. Porsche and Hyundai have both invested in the Croatian firm with the intention of sharing in its ingenious tech, the latest generation of which is crammed into the C_Two. It looks set to move the game on by some margin when it debuts at next year's Geneva motor show.

Many of the statistics haven't changed since the concept's reveal last year, where the frankly insane output of the four-motor powertrain and accompanying 1,950kg kerbweight were first announced. But now, at a private event in London, PH has learned more about this cutting-edge hypercar - like, for example, that its carbon fibre monocoque is built around is the largest single piece of carbon to go into a production car yet. Unlike more conventional tubs (such as McLaren's Monocell), Rimac's carbon skeleton starts at the nose, includes the passenger cell and then extends back to the tail. It gives the structure a torsional stiffness of 70,000Nm, which is so far beyond conventional road cars that it has more in common with single seaters.

It also means the C_Two is completely homologated for global markets in Europe, the US and Asia, with Rimac going above and beyond by integrating the battery and powertrain directly into the structure and putting it through the same crash tests as mass production models. As far as crash safety goes, Rimac is confident that its machine is set to be a bar-raiser, rather than just compliant with the current regs. But that's not to the detriment of access because the door openings indent into the roof and the side sills are low. Company founder Mate Rimac told PH "this is a car that you can use every day with ease", with his team putting a lot of effort into cabin and boot space to maximise comfort and practicality.


Indeed, the battery cell is located in the car's tunnel and under passengers' feet, rather than across the whole floor, so the seats can be lower to the ground. Although even with this slight sacrificing of battery size, the C_Two and its air-cooled 750V system is said to mix a 342-mile range with claims of 1,696lb ft of torque, enabling a 1.85 second 0-60mph time and 258mph top speed. Such are the demands of the market - and Mate Rimac's understanding of the importance of figures to illustrate technological progress - that the C_Two is capable of hitting 186mph 1.8 seconds quicker than a quad-turbo W16-powered Chiron.

Perhaps the most intriguing feature of Rimac's upcoming hypercar, however, is its adjustable driveline. With each of the car's four motors driving a wheel independently through its own single speed gearbox (Mate said this was chosen over the C_One's two-speed setup to save weight), you're given torque vectoring in its truest form. The company boss explained to PH that the C_Two will get a dash-mounted rotary dial to allow the manual adjustment of torque split from front to rear, or switch it back to all-wheel drive. Of course, rotating the dial all the way to rear-wheel drive would leave those front motors inactive (albeit still capable of kinetic energy recuperation) - although that would still mean there's 957hp to play with at the back. Mate hinted that the level of autonomous technology provided as standard will mean anyone can explore its capabilities safely.

On the subject of driverless stuff, the C_Two will get nine cameras and six radars, be capable of autonomous track driving to demonstrate the best lines and seamlessly provide assistance should you want it. Think of how Ferrari's Slide Slip Control tech helps and then imagine if it were evolved into a platform with the advantages of Rimac's C_Two. That being said, there are some compromises in the package, such as the car's use of two-wheel steer. Mate said he'd like all-wheel steering to boost agility further, but that at this stage it was better to stick with two-wheel steer and maximise the current setup. The same is true for active anti-roll technology, which has so far brought more weight than handling benefits.


In order to give as natural a feeling to the controls as possible, the car's steering and brakes are part 'by wire', part mechanical. This means that a physical connection with the control surfaces remains, but that the electric system can automatically vary assistance in real time, meaning that, among other things, the energy recuperation's constantly changing impact on deceleration will go unnoticed. The mechanical and electric system seamlessly juggle the workload so from the driver's perspective, the process ought to be unrecognisable through the brake pedal - or that's the theory at least. Same for the active aero, which works so the car's balance and performance is consistently maintained. In fact the whole skin has been crafted for maximum efficiency; even the cooling ducts blow air onto a motor without the need for underbody piping - saving weight, build complexity and reducing drag. The attention for detail is astounding.

Mind you, it wouldn't necessarily feel that way if you climbed aboard the development car PH was shown, given that it features an unfinished prototype cabin. The production car, however, will get six screens in total, with Mate emphasising that it would not be a "screen overload" as four are essentially button screens, with the rather conventional pairing of a central infotainment display and instrument cluster accounting for most of the kit. All the main driving controls will retain manually operated buttons and switches, because Mate - a self-confessed petrolhead as well as EV enthusiast - believes these features should be tactile. The materials to surround them, however, will come as standard in vegan form, although a leather interior will be a no cost option.

Once Rimac's latest creation is shown at the Geneva show next March, the brand expects several of the innovations to trickle across to its investors. There's no threat of the company shifting to pure technology development in the future, though, as Mate explained to PH: "I want us to always be a maker of actual cars, as well as a developer of new technology. There are lots of things I have already decided I want to do with the next car. We can do much more with the C_Two base!"










Author
Discussion

sidesauce

Original Poster:

1,126 posts

167 months

Thursday 21st November 2019
quotequote all
This car will definitely be one to watch...

RobDickinson

28,304 posts

203 months

Thursday 21st November 2019
quotequote all
[Insert witty hamster test drive joke here]

UnderSteerD

125 posts

131 months

Thursday 21st November 2019
quotequote all
How long before someone mentions the 'T' word?

Equus

7,201 posts

50 months

Thursday 21st November 2019
quotequote all
the article said:
... a torsional stiffness of 17,000Nm, which is so far beyond conventional road cars that it has more in common with single seaters.
Eh?

17000Nm (per degree, I assume) is about the same as a 2006 Mercedes SL, with it's top down. Pretty unexceptional, in other words. The Bugatti Chiron is claimed to be 50,000.

DanielSan

14,634 posts

116 months

Thursday 21st November 2019
quotequote all
Equus said:
the article said:
... a torsional stiffness of 17,000Nm, which is so far beyond conventional road cars that it has more in common with single seaters.
Eh?

17000Nm (per degree, I assume) is about the same as a 2006 Mercedes SL, with it's top down. Pretty unexceptional, in other words. The Bugatti Chiron is claimed to be 50,000.
I'm going to make the assumption that's supposed to be 170,000.


DMC2

1,389 posts

160 months

Thursday 21st November 2019
quotequote all
Yawn. How can anybody get interested in this stupidly expensive and pointlessly fast thing that has a name like a device a women shaves her bits with. Purely made for rich idiots with zero taste, no driving ability and no idea what makes a car exciting.

Niffty951

1,901 posts

177 months

Thursday 21st November 2019
quotequote all
It's hard to build something in today's hypercar market that could have the same sort of impact the Countach had when it made it's way to a poster on my bedroom wall as a child.

This is on that level. It's a small scale production of pure WOW.

How much are posters?

Equus

7,201 posts

50 months

Thursday 21st November 2019
quotequote all
DanielSan said:
I'm going to make the assumption that's supposed to be 170,000.
Unlikely. That would put it an order of magnitude above anything else.

I'm going to make the assumption that whichever one of PistonHeads' infinite number of monkeys wrote this article wast paying attention properly when he read the press release.

Sam Sheehan

40 posts

86 months

Thursday 21st November 2019
quotequote all
Equus said:
Unlikely. That would put it an order of magnitude above anything else.

I'm going to make the assumption that whichever one of PistonHeads' infinite number of monkeys wrote this article wast paying attention properly when he read the press release.
You are correct that this monkey misquoted the figure (it's 70,000) but it's because he misheard the announcement at the event! No press releases to rehash this time wink

Equus

7,201 posts

50 months

Thursday 21st November 2019
quotequote all
Sam Sheehan said:
You are correct that this monkey misquoted the figure (it's 70,000) but it's because he misheard the announcement at the event! No press releases to rehash this time wink
If you're gonna correct it in the article, you might want to correct the units, too... it's Nm/degree, not just Nm.


hairykrishna

11,033 posts

152 months

Thursday 21st November 2019
quotequote all
DMC2 said:
Yawn. How can anybody get interested in this stupidly expensive and pointlessly fast thing that has a name like a device a women shaves her bits with. Purely made for rich idiots with zero taste, no driving ability and no idea what makes a car exciting.
It might not be the last word in driver involvement,and it does have a stupid name, but trying to claim that a road car that can accelerate to 300km/h in less than 12 seconds won't be exciting is a bit silly.

The 'article' isn't great is it? Does PH not have anyone left who knows anything about cars? At least enough to suggest that the author might want to check his 17k Nm/deg figure would be nice.

Chubbyross

375 posts

34 months

Thursday 21st November 2019
quotequote all
DMC2 said:
Yawn. How can anybody get interested in this stupidly expensive and pointlessly fast thing that has a name like a device a women shaves her bits with. Purely made for rich idiots with zero taste, no driving ability and no idea what makes a car exciting.
You might not like the car but a lot of the tech in this will end up in a car you might be driving in twenty years, if you’re still around by then.

A1VDY

1,263 posts

76 months

Thursday 21st November 2019
quotequote all
A combination of Hyundai and Pork, is sure to be a winner, as long as it comes with the Hyundai 7 year/100k mile warranty.
0 to 60 in 1.85 seconds, what's not to like.. only the fact that no one could afford one I suppose..

Tcooc168

44 posts

5 months

Thursday 21st November 2019
quotequote all
UnderSteerD said:
How long before someone mentions the 'T' word?
What’s the T word?

Vee12V

857 posts

109 months

Thursday 21st November 2019
quotequote all
A whole article without mentioning the Evija? I mean, it's only more powerful (just), better looking and lighter than this thing...

RobDickinson

28,304 posts

203 months

Thursday 21st November 2019
quotequote all
Vee12V said:
A whole article without mentioning the Evija? I mean, it's only more powerful (just), better looking and lighter than this thing...
When is it going to be an actual thing?

gigglebug

1,466 posts

71 months

Thursday 21st November 2019
quotequote all
Not that it really matters as such for this specific car, as it is a very low volume and expensive effort which will only attract those with the means to cater for any eventuality, but if the various investors are looking to use the the developments made by Rimac how far down could a single carbon structure from front to back trickle down into the mass market? Surely even very minor damage to the shell would result in the car being written off?

DMC2

1,389 posts

160 months

Thursday 21st November 2019
quotequote all
Chubbyross said:
DMC2 said:
Yawn. How can anybody get interested in this stupidly expensive and pointlessly fast thing that has a name like a device a women shaves her bits with. Purely made for rich idiots with zero taste, no driving ability and no idea what makes a car exciting.
You might not like the car but a lot of the tech in this will end up in a car you might be driving in twenty years, if you’re still around by then.
I’m bored of the car tech just now, I really don’t want anymore.

Fiesta1.0L

47 posts

47 months

Friday 22nd November 2019
quotequote all
If that tub truly does go nose to tail, any accident is going to require a replacement and a transplant of every other bit of the car onto it.
There's a reason the Mclaren one is the size it is

Exige77

4,203 posts

140 months

Friday 22nd November 2019
quotequote all
DMC2 said:
Chubbyross said:
DMC2 said:
Yawn. How can anybody get interested in this stupidly expensive and pointlessly fast thing that has a name like a device a women shaves her bits with. Purely made for rich idiots with zero taste, no driving ability and no idea what makes a car exciting.
You might not like the car but a lot of the tech in this will end up in a car you might be driving in twenty years, if you’re still around by then.
I’m bored of the car tech just now, I really don’t want anymore.
Did you not read the thread title ?

Did you just click on it so you could be offended ?