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Let's talk about cars

Let's talk about cars

Old Jul 23rd 2023, 3:37 am
  #8056  
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Default Re: Let's talk about cars

Originally Posted by Olly_
Every EV that I'm aware of won't let you do that. It just won't go into D/R with anything connected to the charge port, even if it's not powered.
Well, that's just bleedin' obvious, isn't it! (now you say it ).
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Old Jul 24th 2023, 1:10 pm
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Default Re: Let's talk about cars

Originally Posted by Finknottle
I wonder if anybody has driven off with the cable still plugged in!
No, not possible. You are prevented from engaging the drive system if it's still plugged in.
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Old Jul 24th 2023, 1:11 pm
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Default Re: Let's talk about cars

Originally Posted by ddsrph
Nice looking car. I am trying to talk my wife into buying a Chevy Bolt. Electric is perfect for the driving she does. At most two round trips to down maybe 50 miles total.
A coworker has one of these. Nice car, almost considered the Bolt as a replacement for my Volt.

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Old Jul 24th 2023, 5:28 pm
  #8059  
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Default Re: Let's talk about cars

Originally Posted by ddsrph
Nice looking car. I am trying to talk my wife into buying a Chevy Bolt. Electric is perfect for the driving she does. At most two round trips to down maybe 50 miles total.
Electric makes sense, but there is a notice on our local parking garage specifically banning Chevy Bolts due to fire-related issues. Might be worth checking your locality first
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Old Jul 24th 2023, 5:37 pm
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Default Re: Let's talk about cars

Originally Posted by newadventure
Electric makes sense, but there is a notice on our local parking garage specifically banning Chevy Bolts due to fire-related issues. Might be worth checking your locality first
Thanks. That’s certainly good to know.
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Old Jul 25th 2023, 12:08 am
  #8061  
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Default Re: Let's talk about cars

Originally Posted by newadventure
Electric makes sense, but there is a notice on our local parking garage specifically banning Chevy Bolts due to fire-related issues. Might be worth checking your locality first
Oh, boy - that sounds like a lawsuit in the making! With all the pressure to switch to EVs, banning them from parking garages sounds sure to raise a lot of challenges. It reminds me of the situation regarding solar panels a while back. Many HOAs banned them due to both aesthetic reasons and safety reasons, and the state of California overrode such bans; you can no longer prevent solar panels unless there is a very specific reason.
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Old Jul 25th 2023, 10:37 am
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Default Re: Let's talk about cars

Originally Posted by Steerpike
Oh, boy - that sounds like a lawsuit in the making! With all the pressure to switch to EVs, banning them from parking garages sounds sure to raise a lot of challenges. It reminds me of the situation regarding solar panels a while back. Many HOAs banned them due to both aesthetic reasons and safety reasons, and the state of California overrode such bans; you can no longer prevent solar panels unless there is a very specific reason.
There are rumblings (heh) of parking garages in danger of collapse due to increased load should electric cars become prevalent.

Not sure how credible this source is, (first one in my quick search) but there are many others if interested.

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Old Jul 25th 2023, 1:29 pm
  #8063  
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Default Re: Let's talk about cars

Originally Posted by Nutek
There are rumblings (heh) of parking garages in danger of collapse due to increased load should electric cars become prevalent.

Not sure how credible this source is, (first one in my quick search) but there are many others if interested.

ZOMG Why are you so fat?
I doubt it can be that credible, if you take a Tesla Model 3 which is a fairly common EV, it is lighter than an F150 or a Tahoe etc. and there are a lot more of those around where I live than EVs and nothing has collapsed around here. Even my Camaro weights about the same as a Model 3 as well.
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Old Jul 25th 2023, 3:20 pm
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Default Re: Let's talk about cars

Originally Posted by newadventure
Electric makes sense, but there is a notice on our local parking garage specifically banning Chevy Bolts due to fire-related issues. Might be worth checking your locality first
That issue was resolved 12 months back. Chevy recalled all Bolts and upgraded the drive batteries.
They no longer spontaneously combust lol
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Old Aug 8th 2023, 4:58 am
  #8065  
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Default Re: Let's talk about cars

Have you ever wondered why Tesla's have a 'Dual Motor' badge on them?

I just read this fascinating article about EVs and gearboxes / transmissions. EV Transmissions Are Coming, And It's A Good Thing - CleanTechnica . Apparently no current EV has a 'gearbox', and there are various reasons for this. The simplest answer is, 'they don't need it'. But that's only partly true - the electric motor does have a much wider operating range (RPMs) than an ICE engine, but efficiency still falls off at certain RPMs. But designing a gearbox that can withstand the super-high torque power of an electric motor is apparently not easy.

For cheaper, simpler EVs, having just one 'gear ratio' is ok. The top speed on a Chevy Bolt is apparently around 90mph, which is good enough. But Tesla wanted to have higher speeds, but could not design a sufficiently robust gearbox so - that's where they came up with the 'Dual Motor' idea. They have one motor driving the rear wheels which has its gearing ratios optimized for lower speeds, then it has a second motor driving the front wheels that is geared for higher speeds. As the vehicle speeds up, power is transitioned from the rear wheels to the front wheels, indirectly implementing the same outcome as a gearbox with multiple ratios. But apparently, there are numerous 'performance' EVs in the works now (Porsche, etc).

The observation I have is - having 'dual motors' means you can implement four wheel drive very nicely. Are electric motors fundamentally more complicated than transmissions?
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Old Aug 8th 2023, 8:21 am
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Default Re: Let's talk about cars


10 times as much fun without the muscle sound, unless it is on a sound system....veroom vroom
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Old Aug 8th 2023, 8:00 pm
  #8067  
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Default Re: Let's talk about cars

Originally Posted by Steerpike
Have you ever wondered why Tesla's have a 'Dual Motor' badge on them?

I just read this fascinating article about EVs and gearboxes / transmissions. EV Transmissions Are Coming, And It's A Good Thing - CleanTechnica . Apparently no current EV has a 'gearbox', and there are various reasons for this. The simplest answer is, 'they don't need it'. But that's only partly true - the electric motor does have a much wider operating range (RPMs) than an ICE engine, but efficiency still falls off at certain RPMs. But designing a gearbox that can withstand the super-high torque power of an electric motor is apparently not easy.

For cheaper, simpler EVs, having just one 'gear ratio' is ok. The top speed on a Chevy Bolt is apparently around 90mph, which is good enough. But Tesla wanted to have higher speeds, but could not design a sufficiently robust gearbox so - that's where they came up with the 'Dual Motor' idea. They have one motor driving the rear wheels which has its gearing ratios optimized for lower speeds, then it has a second motor driving the front wheels that is geared for higher speeds. As the vehicle speeds up, power is transitioned from the rear wheels to the front wheels, indirectly implementing the same outcome as a gearbox with multiple ratios. But apparently, there are numerous 'performance' EVs in the works now (Porsche, etc).

The observation I have is - having 'dual motors' means you can implement four wheel drive very nicely. Are electric motors fundamentally more complicated than transmissions?
but a dual motor still has a drive shaft on both axels.

For the CT they will have a tri-motor and late maybe a quad…

Where are each of the motors placed on Tesla Tri Motor AWD vehicles?

“One at the front, integrated with a differential, on the centreline of the car in between the front wheels and driving the front wheels via driveshafts, exactly the same as a front wheel drive car. Two at the rear driving the rear wheels.”
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Old Aug 9th 2023, 4:55 am
  #8068  
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Default Re: Let's talk about cars

Originally Posted by tht
but a dual motor still has a drive shaft on both axels.

For the CT they will have a tri-motor and late maybe a quad…

Where are each of the motors placed on Tesla Tri Motor AWD vehicles?

“One at the front, integrated with a differential, on the centreline of the car in between the front wheels and driving the front wheels via driveshafts, exactly the same as a front wheel drive car. Two at the rear driving the rear wheels.”
CT? I tried Google but it's such a popular abbreviation for Connecticut, I couldn't get beyond that. Is it a new model? I googled Tesla three motor and came up with this - https://www.roadandtrack.com/new-car...thing-we-know/ .
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Old Aug 9th 2023, 11:26 am
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Default Re: Let's talk about cars

Originally Posted by Steerpike
CT? I tried Google but it's such a popular abbreviation for Connecticut, I couldn't get beyond that. Is it a new model? I googled Tesla three motor and came up with this - https://www.roadandtrack.com/new-car...thing-we-know/ .
Cyber Truck?
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Old Aug 9th 2023, 7:39 pm
  #8070  
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Default Re: Let's talk about cars

Originally Posted by Steerpike
CT? I tried Google but it's such a popular abbreviation for Connecticut, I couldn't get beyond that. Is it a new model? I googled Tesla three motor and came up with this - https://www.roadandtrack.com/new-car...thing-we-know/ .
Yes Cyber Truck
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