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Rivian's platform approach to electric vehicles helped it raise $3B this year

technologyreview.com

71–80 of 171 posts

Re: Rivian's platform approach to electric vehicles helped it raise $3B this year

#71
post #35
post #6

The Rivian is a truck you need, the Tesla is a truck you want. And the Revian will be road legal in Europe.

The F150 is the truck I need, the Rivian is the Truck I want, the Cyber Truck is the truck I laugh at

The F150 is the truck I need, the Rivian is the Truck I want, the Cyber Truck is the truck I will get :) :)

Re: Rivian's platform approach to electric vehicles helped it raise $3B this year

#72
While a 4-motor design allows this really cool tank-turn trick, it also prevents torque transfer between wheels / axes.

Some "pedestrian" SUVs today allow transferring up to 70% of all available torque to any single wheel if situation demands. A 4-motor design is limited to 25%.

Re: Rivian's platform approach to electric vehicles helped it raise $3B this year

#73
post #52
post #16

Earlier quoted context omitted.

No, the hype is over the vehicles themselves. EVs are the future. And, as William Gibson famously said, "The future is already here, it's just unevenly distributed." Once you experience the quiet, convenience and power of an EV, it's hard to go back to an ICE car. We're already past the early-adopter phase. Improvements in price, range and charging infrastructure (already happening) will capture everyone else.

The EV market has already hit a plateau, suggesting that it has exhausted the customer base for very expensive cars with short ranges. September 2019 sales were down (US and global) vs 2018, and 2019 Q3 sales were down vs Q3 2018 as well (also for the US and globally). These sales figures suggest that EVs need something new, like lower prices or more utility, to start growing again.

IDK where you got these numbers, Teslas are selling better right now (q4 2019) than ever before.

Re: Rivian's platform approach to electric vehicles helped it raise $3B this year

#75
post #72

While a 4-motor design allows this really cool tank-turn trick, it also prevents torque transfer between wheels / axes. Some "pedestrian" SUVs today allow transferring up to 70% of all available torque to any single wheel if situation demands. A 4-motor design is limited to 25%.

When you have a truck with 700hp and 800 ft lbs torque, you are only using all that power in good traction situations. I don't think you'll need more then 25% power per wheel with traction in slippery situations.

Also, in bad traction situations open diffs have the issue of transferring all the power to the wheel without grip and much engineering is put into solving this on off road vehicles. A 4 motor electric car solves this while being mechanically much simpler and likely lighter.

Re: Rivian's platform approach to electric vehicles helped it raise $3B this year

#76

Earlier quoted context omitted.

Do you mean that you can't throw stuff in the back of the Cybertruck when the bed cover is open? If so, why not?

They’re talking about access from the side. Since the body of the CyberTruck gradually raises to the roof line, you can’t easily reach into the bed close to the rear window.

no one is thinking about that automatically adjusting suspension. It could lower itself when you get near with your phone, like an elephant kneeling down for you to climb on to it lol

Re: Rivian's platform approach to electric vehicles helped it raise $3B this year

#77
post #73
post #52

Earlier quoted context omitted.

The EV market has already hit a plateau, suggesting that it has exhausted the customer base for very expensive cars with short ranges. September 2019 sales were down (US and global) vs 2018, and 2019 Q3 sales were down vs Q3 2018 as well (also for the US and globally). These sales figures suggest that EVs need something new, like lower prices or more utility, to start growing again.

IDK where you got these numbers, Teslas are selling better right now (q4 2019) than ever before.

https://insideevs.com/news/343998/monthly-plug-in-ev-sales-s...

Re: Rivian's platform approach to electric vehicles helped it raise $3B this year

#78
post #72

While a 4-motor design allows this really cool tank-turn trick, it also prevents torque transfer between wheels / axes. Some "pedestrian" SUVs today allow transferring up to 70% of all available torque to any single wheel if situation demands. A 4-motor design is limited to 25%.

I believe that most BEVs are limited by the power the battery can output safely, not by the motor's individual power rating.

I could imagine an EV with a 400hp battery + a 400hp motor at each wheel allowing for 100% of the power to be used at one wheel, where in 4x4 mode each motor would be seeing 25% at max power. I'm not sure exactly how much of a premium you would pay for that but motors are cheap compared to batteries.

Re: Rivian's platform approach to electric vehicles helped it raise $3B this year

#79

Sounds familiar to NIO. They raised a total of $4.1B. This whole electric hype is interesting to me. Why is it better for the environment? In the end you drive around with however the power from the grid was produced. Even in California that’s only one third renewables. Most is natural gas and nuclear. So, your electric car is driving around with natural gas with an efficiency way worse than petroleum. Besides, dispo…

See the first chart on this page. https://www.pca.state.mn.us/air/electric-vehicles

Re: Rivian's platform approach to electric vehicles helped it raise $3B this year

#80

> On Monday, Rivian announced it had raised $1.3 billion in its fourth funding round of the year, led by T. Rowe Price, bringing its total for 2019 to nearly $2.9 billion. > Rivian has been quietly developing vehicles for a decade, but it seized the industry’s attention in late 2018, when it unveiled a pair of eye-catching, high-end electric trucks. Rivian raised $2.9 billion over four funding rounds in the span of o…

It is yet another effort (fuel cell, Nikola, lucid, workhorse) by the existing industry to divert attention and money away from the few players (mainly Tesla) that are actually delivering battery electric vehicles. /tinfoil

Until recently, the existing industry was shipping more battery electric vehicles than Tesla. Nissan Leaf sells very well, as do BMW, Chevy, and several other OEMs.

https://www.eei.org/issuesandpolicy/electrictransportation/D...

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