Will Electric Vehicles Be Viable? When?

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Andres125sx
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Re: Will Electric Vehicles Be Viable? When?

Post by Andres125sx » Fri Sep 20, 2019 10:10 am

Those are big news :shock:

Andres125sx
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Re: Will Electric Vehicles Be Viable? When?

Post by Andres125sx » Wed Sep 25, 2019 9:37 am

This looks quite revolutionary


Big Tea
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Re: Will Electric Vehicles Be Viable? When?

Post by Big Tea » Wed Sep 25, 2019 10:03 am

Looks Very interesting. I hope 'vested interests' do not come into play now.
One test is worth a thousand expert opinions

henry
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Re: Will Electric Vehicles Be Viable? When?

Post by henry » Wed Sep 25, 2019 10:06 am

Andres125sx wrote:
Wed Sep 25, 2019 9:37 am
This looks quite revolutionary

https://www.youtube.com/watch?v=8gO60bt6rqk
Interesting, but I would be concerned about oversell. At the beginning they show a graph where they claim to be at most 20% more efficient and at the end they show a battery that’s quarter the size. And they claim both motors 95% efficient but the graph ends before that is reached suggesting that the efficiency improvement is all at low speed, which may or may not match to a useful speed range.
Fortune favours the prepared; she has no favourites and takes no sides.
Truth is confirmed by inspection and delay; falsehood by haste and uncertainty : Tacitus

Big Tea
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Re: Will Electric Vehicles Be Viable? When?

Post by Big Tea » Wed Sep 25, 2019 10:15 am

henry wrote:
Wed Sep 25, 2019 10:06 am
Andres125sx wrote:
Wed Sep 25, 2019 9:37 am
This looks quite revolutionary

https://www.youtube.com/watch?v=8gO60bt6rqk
Interesting, but I would be concerned about oversell. At the beginning they show a graph where they claim to be at most 20% more efficient and at the end they show a battery that’s quarter the size. And they claim both motors 95% efficient but the graph ends before that is reached suggesting that the efficiency improvement is all at low speed, which may or may not match to a useful speed range.
As the efficiency boost is at the lower end it would be less problematic to add a little gearing into the system add use the 'sweet spot', if it is as good as they claim. A 2 gear or CVT drive would not make much difference and would take little room. An independent review would be nice, but worthless unless it was a vehicle installation.
One test is worth a thousand expert opinions

henry
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Re: Will Electric Vehicles Be Viable? When?

Post by henry » Wed Sep 25, 2019 10:30 am

Big Tea wrote:
Wed Sep 25, 2019 10:15 am
henry wrote:
Wed Sep 25, 2019 10:06 am
Andres125sx wrote:
Wed Sep 25, 2019 9:37 am
This looks quite revolutionary

https://www.youtube.com/watch?v=8gO60bt6rqk
Interesting, but I would be concerned about oversell. At the beginning they show a graph where they claim to be at most 20% more efficient and at the end they show a battery that’s quarter the size. And they claim both motors 95% efficient but the graph ends before that is reached suggesting that the efficiency improvement is all at low speed, which may or may not match to a useful speed range.
As the efficiency boost is at the lower end it would be less problematic to add a little gearing into the system add use the 'sweet spot', if it is as good as they claim. A 2 gear or CVT drive would not make much difference and would take little room. An independent review would be nice, but worthless unless it was a vehicle installation.
This theory is being tested by Tesla and Porsche as we speak.
Fortune favours the prepared; she has no favourites and takes no sides.
Truth is confirmed by inspection and delay; falsehood by haste and uncertainty : Tacitus

Big Tea
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Re: Will Electric Vehicles Be Viable? When?

Post by Big Tea » Wed Sep 25, 2019 10:31 am

henry wrote:
Wed Sep 25, 2019 10:30 am
Big Tea wrote:
Wed Sep 25, 2019 10:15 am
henry wrote:
Wed Sep 25, 2019 10:06 am


Interesting, but I would be concerned about oversell. At the beginning they show a graph where they claim to be at most 20% more efficient and at the end they show a battery that’s quarter the size. And they claim both motors 95% efficient but the graph ends before that is reached suggesting that the efficiency improvement is all at low speed, which may or may not match to a useful speed range.
As the efficiency boost is at the lower end it would be less problematic to add a little gearing into the system add use the 'sweet spot', if it is as good as they claim. A 2 gear or CVT drive would not make much difference and would take little room. An independent review would be nice, but worthless unless it was a vehicle installation.
This theory is being tested by Tesla and Porsche as we speak.
:-$ :mrgreen:
One test is worth a thousand expert opinions

rscsr
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Re: Will Electric Vehicles Be Viable? When?

Post by rscsr » Wed Sep 25, 2019 10:53 am

Big Tea wrote:
Wed Sep 25, 2019 10:15 am
henry wrote:
Wed Sep 25, 2019 10:06 am
Andres125sx wrote:
Wed Sep 25, 2019 9:37 am
This looks quite revolutionary

https://www.youtube.com/watch?v=8gO60bt6rqk
Interesting, but I would be concerned about oversell. At the beginning they show a graph where they claim to be at most 20% more efficient and at the end they show a battery that’s quarter the size. And they claim both motors 95% efficient but the graph ends before that is reached suggesting that the efficiency improvement is all at low speed, which may or may not match to a useful speed range.
As the efficiency boost is at the lower end it would be less problematic to add a little gearing into the system add use the 'sweet spot', if it is as good as they claim. A 2 gear or CVT drive would not make much difference and would take little room. An independent review would be nice, but worthless unless it was a vehicle installation.
I don't quite get it. This looks like a permanent-magnet synchronous motor (PMSM) or BLDC motor where they are changing the position of some magnets for the purpose of using it at different speeds.
But can't you do that already anyway with BLDC motors and a proper inverter?

foxmulder_ms
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Re: Will Electric Vehicles Be Viable? When?

Post by foxmulder_ms » Wed Sep 25, 2019 3:59 pm

loner wrote:
Thu Sep 19, 2019 10:56 am
DAIMLER STOPS COMBUSTION ENGINE DEVELOPMENT .. Full focus on electric drive.
https://www.auto-motor-und-sport.de/tec ... lung-2019/
a decision that delayed just about 70 years sorta, no big deal obsolete is cool.
i lost interest in this thread i won't participate in it again.
Bravo. Tesla kick woke them up. Great news.

Greg Locock
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Re: Will Electric Vehicles Be Viable? When?

Post by Greg Locock » Wed Sep 25, 2019 8:27 pm

Daimler also announced a long time back that the inline 6 was dead. Until it wasn't.

https://www.hagerty.com/articles-videos ... a-comeback