Official Thread [Official] Lotus Electric Hypercar now confirmed

[Bridster]

In fact it's not hilarios. It's the hardest thing to achieve. Every normal battery would melt down in such conditions. There must be some very exotic and expensive shit inside in order to achieve such power density. This battery can be drained in less than 3 min.

Check for example the battery of the future AMG 73 hybrids. It weighs 80 kg and has a useful energy of 4,8 kWh. So high power density doesn't go necessaryly hand in hand with high energy density.

Yeah, no shit it doesn't. You can pretty much have 2 out of Energy Density, Power Density and Number of charge cycles.

The point about the Lotus battery is that concentrating on power density without paying attention to energy density is stupid. If you need more power from the battery, then you can also get that by increasing the size of the battery. That's obviously gonna increase weight, but what Lotus is doing is apparently increasing the weight even more, but without the benefit of also getting more range. And then they go and say "Look at our battery, it's the most power dense!" Yeah, that's cute, but it's delivering the same power as your competitors, while being heavier and providing less electric range.

As far as volumetric efficiency goes, you might have a point there, but that's really a self-inflicted wound. They had a complete freedom to design whatever car they wanted. Their competitors are able to package extra 50kWh? That's just a weakness of their design then.

 

[CrunchSlaughtered]

Yeah, no shit it doesn't. You can pretty much have 2 out of Energy Density, Power Density and Number of charge cycles.

The point about the Lotus battery is that concentrating on power density without paying attention to energy density is stupid. If you need more power from the battery, then you can also get that by increasing the size of the battery. That's obviously gonna increase weight, but what Lotus is doing is apparently increasing the weight even more, but without the benefit of also getting more range. And then they go and say "Look at our battery, it's the most power dense!" Yeah, that's cute, but it's delivering the same power as your competitors, while being heavier and providing less electric range.

As far as volumetric efficiency goes, you might have a point there, but that's really a self-inflicted wound. They had a complete freedom to design whatever car they wanted. Their competitors are able to package extra 50kWh? That's just a weakness of their design then.

We can't be sure how the weight of the battery is measured. In the case of Lotus it may include to whole infrastructure and cooling, with cooling liquid and so on, while Rimac may give only the weight of the cells and the casing. I thing that the final result of dinamics, riad holding, steering etc is more important than the parameters of the single components. Lets hope that both cars go soon in production and deliver what they have promised.

 

[Bucketslash11]

Say what you want, but at least Lotus isn't bullshitting it's specs like Rimac has. It's also much lighter than any other EV hypercar, so I think they get approval for using that "lightweight" term.
0-100 in 1.85 "my ass" seconds and top speed of 260 km/h instead of 412 km/h in Rimac's case.

I have more faith in Evija than whatever Rimac is doing with the C2 or whatever Pininfarina is doing with their project.

there's been a test of Rimac C2?

 

[Bucketslash11]

Yeah, no shit it doesn't. You can pretty much have 2 out of Energy Density, Power Density and Number of charge cycles.

The point about the Lotus battery is that concentrating on power density without paying attention to energy density is stupid. If you need more power from the battery, then you can also get that by increasing the size of the battery. That's obviously gonna increase weight, but what Lotus is doing is apparently increasing the weight even more, but without the benefit of also getting more range. And then they go and say "Look at our battery, it's the most power dense!" Yeah, that's cute, but it's delivering the same power as your competitors, while being heavier and providing less electric range.

As far as volumetric efficiency goes, you might have a point there, but that's really a self-inflicted wound. They had a complete freedom to design whatever car they wanted. Their competitors are able to package extra 50kWh? That's just a weakness of their design then.

you often come with technical comments (here, AMG One and Valkyrie as examples) , are you an educated mechanical engineer/automotive engineer?

 

[Bridster]

you often come with technical comments (here, AMG One and Valkyrie as examples) , are you an educated mechanical engineer/automotive engineer?

Sadly not. Just an enthusiast trying not to be too ignorant .

 

[A.P.]

Y

there's been a test of Rimac C2?

Yes, check the Rimac thread, it's from a fairly recent PR video.

 

[Bridster]

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Customer deliveries only planned for the start of the next year...

 

[WBarnes]

So I remember there being a debate earlier about Evija's centralised location of the battery versus having it mounted along the floor like the Rimac and which was best. Well, turns out the Porsche Mission-E has a centralised location, which is said to allow the rest of the car and driver to be mounted lower, and helps the car rotate better in corners.

- Top Gear Issue 355.

 

[CrunchSlaughtered]

So I remember there being a debate earlier about Evija's centralised location of the battery versus having it mounted along the floor like the Rimac and which was best. Well, turns out the Porsche Mission-E has a centralised location, which is said to allow the rest of the car and driver to be mounted lower, and helps the car rotate better in corners.

- Top Gear Issue 355.

Yeah, it makes sense, because thus the whole car could be much lower and achieve a better drag efficiency (less frontal area).

 

[Deleted member 57437]

What I'm really looking forwards to are the BEV sport utility crossover and BEV 4 door sedoupe. I'm wondering how much technology will be shared with fellow Geely brand Polestar.

 

[Bridster]

It's interesting how there's been such a complete lack of updates when it comes to this car. Not even a peep from Lotus. Not anything about how the lawsuit against Williams Advanced Engineering is going either.

Anyway, here is a small tidbit:

Someone took a photo of a spec plaque at Goodwood. Not much has changed, except the battery is now apparently 90kWh (was 70) and there is no mention of weight anymore (used to claim 1680kg ).

Still no word on when we might expect it.

 

[Sunny]

Will just leave this here to burnish the esteemed member's incredible credibility -

Rimac first showed this car in March 2018, two years later they still haven't put it into production, Lotus on the other hand first showed the Evija in November 2019, production will start in June 2020.

 

[KiwiRob]

Will just leave this here to burnish the esteemed member's incredible credibility -

The esteemed member also knows that the UK has been working from home for most of 2020-2021 and projects get delayed.

 

[Centurion]

Still no word on when we might expect it.

In the interim it serves as brand mascot.
Although Tesla has generated zero revenue from the Roadster 2.0, the car has generated hundreds of millions in PR value + deposits serve as interest free credit

 

[Sunny]

The esteemed member also knows that the UK has been working from home for most of 2020-2021 and projects get delayed.

Lol, so "wfh" is your excuse why what you said in March 2020 will be done in June 2020 (3 months) is still not done 2 years later!

When you lost money to me, I knew you were a big ass fool. But you are an even bigger fool that I thought.

 

[Bridster]

Ok, I just checked Lotus's website and it now says "2023" for the Evija.

As for the effect of Covid restrictions, I feel like it's now become a catch all excuse for any and every delay. The launch of the car was initially planned for mid 2020 and so Covid restrictions coming into effect in March of that year would have only affected the least 3-4 months of development. If the car really was on track for mid 2020 launch, at most it should have delayed the car to late 2020, or perhaps early 2021. Not to 2023, or even later.

The fact that they are now using a different battery suggests that after the Williams Advanced Engineering divorce, they were forced to develop (or to have someone develop) a completely new one from scratch. And that would also affect other things on the car that would have to be changed as a result. So that might be the main culprit for the current 3 year delay.

 

[Centurion]

Ok, I just checked Lotus's website and it now says "2023" for the Evija.

As for the effect of Covid restrictions, I feel like it's now become a catch all excuse for any and every delay. The launch of the car was initially planned for mid 2020 and so Covid restrictions coming into effect in March of that year would have only affected the least 3-4 months of development. If the car really was on track for mid 2020 launch, at most it should have delayed the car to late 2020, or perhaps early 2021. Not to 2023, or even later.

The fact that they are now using a different battery suggests that after the Williams Advanced Engineering divorce, they were forced to develop (or to have someone develop) a completely new one from scratch. And that would also affect other things on the car that would have to be changed as a result. So that might be the main culprit for the current 3 year delay.

I think that the production start date was announced prematurely.

Like Elon Musk has said, creating a prototype is east, achieving volume production is ten times harder. Developing a new drivetrain is expensive and highly complex. There is validation, stress, durability and reliability testing. Any fault can send you back to the drawing board and delay the launch of the car.

This is why car manufacturers like to carry over existing and proven drivetrains to new car models.

$2.3million for the Evija is Bugatti money. The Evija better be perfect as there is zero room to bump up that price. It won't be long before there is an EV Bugatti powered by production ready Rimac underpinnings.

 

[bmwz4coupe]

I think that the production start date was announced prematurely.

Like Elon Musk has said, creating a prototype is east, achieving volume production is ten times harder. Developing a new drivetrain is expensive and highly complex. There is validation, stress, durability and reliability testing. Any fault can send you back to the drawing board and delay the launch of the car.

This is why car manufacturers like to carry over existing and proven drivetrains to new car models.

$2.3million for the Evija is Bugatti money. The Evija better be perfect as there is zero room to bump up that price. It won't be long before there is an EV Bugatti powered by production ready Rimac underpinnings.

I really hope they will be able to deliver the Evija in 2023. The car looked very impressive on paper when it was launched a few years ago and it does still today. But the car world is moving on, and if it gets delayed more it will come out as a supercar instead of a hypercar.

 

[A.P.]

I really hope they will be able to deliver the Evija in 2023. The car looked very impressive on paper when it was launched a few years ago and it does still today. But the car world is moving on, and if it gets delayed more it will come out as a supercar instead of a hypercar.

Besides Nevera and it's Italian body-kit cousin, there aren't many 2000hp hypercars. Even if it gets delayed even further, it will be a hypercar like almost no other.

How many Neveras has Rimac delivered?

 

[Tourbillon]

It's interesting how there's been such a complete lack of updates when it comes to this car. Not even a peep from Lotus. Not anything about how the lawsuit against Williams Advanced Engineering is going either.

Anyway, here is a small tidbit:

Someone took a photo of a spec plaque at Goodwood. Not much has changed, except the battery is now apparently 90kWh (was 70) and there is no mention of weight anymore (used to claim 1680kg ).

Still no word on when we might expect it.

LOL! You used Frankie and Debbie too! I captured it as well but admittedly not as sharp for another community.

But why has everyone missed seemingly the 217MPH top speed?