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  #1  
Old 07-09-2017, 07:59 AM
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Quote:
Originally Posted by NZScott View Post
Ah, an EV thread on a die hard diesel forum...

So many untrue myths when it comes to EVs that I see time and time again. Charging a national EV fleet at night isn't a problem, night time is when when there's the least load on the grid (at the moment). Charging software can control when to turn charging on and off and it's possible to use EV batteries as grid storage for peaks if the owner wishes.
Li-ion battery longevity is hell of a lot better than most think, a Model S got to 200,000 miles with only a 6% capacity loss! People always bring up how bad producing batteries is for the environment, ignoring of course the oil refining industry in its entirety. Then there's the old "EVs still burn coal", so burning hydrocarbons at 30% peak thermal efficiency in very limited circumstances with an ICE vehicle is better..../s


A new EV? Not for me. I hope to convert a W123 to electric though (using Leaf parts perhaps).
I also see a lot of myths about electric vehicles floating around the internet.

1/3 the cost? To charge a 60 kw/hr battery pack at standard USA electric rates would cost about $7.80 today. The Model 3 has an advertised range of 235 miles, and I'd be willing to bet it might be able to get that if its used exclusively in its 'sweet spot' of performance IE shorter trips in a city/suburban environment. People that are using Teslas and other EV on longer-range and higher speed drives are not going to get anywhere near 235 mile range. Think a Model 3 driving on an interstate highway at 80MPH when its at sub-freezing temps is going to go 235 miles? Would you want to use the last 50 miles of range if you're driving in a rural environment at night? Not likely.

Also keep in mind that the $7.80 to go 235 miles doesn't currently include a penny of federal or state road tax. If we wanted to be fair we'd have to include the costs that the diesel drivers are currently paying for road use tax into the equation right? That's currently somewhere around .35-.50 cents per gallon depending on where you live.

A Model 3 sized car with a modern CDI engine would return at least 45-50 MPG. Assuming the lower end 45MPG and current diesel fuel cost of $2.30 per gallon it would cost me around $12 for the trip. With the electric car it would be $7.80 for the juice + $2.15 for road tax or around $10.

It's less but not really all that much less, and you'd have to be willing to put up with some pretty significant limitations and inconveniences that don't exist with the CDI vehicle.

I've also read about the Model S that went 200K miles and only lost 6% of its battery capacity due to battery fade. Of course Li-on battery life lifecycle is a well-understood issue and if you use the standard charge/discharge expected cycle life you'll find that at about 150K miles the battery packs should be down to about 60% capacity. Everything I've ever bought/used that has a Li-on battery pack has exhibited the exact same battery fade issues as the charge/discharge cycles add up. Not really sure why Teslas are apparently immune to this issue but apparently they are? I'd like to hear more about how Elon has side-stepped the physics of battery fade. If he has he should license and sell the technology to iPhone battery makers and cordless tool battery makers because that technology would truly be 'disruptive'.

As far as your EV's, coal and 30% thermal efficiency modern CDI internal combustion engine argument I suggest you do a bit more research about the thermal efficiency of modern power plants vs modern CDI engines. They are pretty much identical.

If the Model 3 is such a game changer and its disruptive technology how come the Chevy Volt which has the exact same specifications and costs as the Model 3 is languishing on the sales floor?
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Last edited by vstech; 07-09-2017 at 11:43 AM.
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Old 07-09-2017, 09:05 AM
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I have a friend who owns the standard and expensive Tesla. He has been very happy with the build quality of the car; says it is about the best he has ever owned. However he has to plan all of his out of town trips around the locations of charging stations.

That seems to be his major gripe.
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Old 07-09-2017, 10:49 AM
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Originally Posted by TimFreeh View Post

If the Model 3 is such a game changer and its disruptive technology how come the Chevy Bolt which has the exact same specifications and costs as the Model 3 is languishing on the sales floor?
Because it's a POS GM car. There's about 50 ways I can expand on that. There are currently over 400,000 Model 3's on pre-order (deposit paid customers). Gm will NEVER sell 400k Volts ever in their lives.


And as far as your charging math though - where are you, the Communist State of CA? Those numbers I'm seeing you post look like ~.10/KWh. National average for off-peak is significantly less. And then there's Teslas Superchargers and any other public use chargers that may be available.
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Old 07-09-2017, 11:32 AM
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Originally Posted by kendogg View Post
This has been the fear mongering talk for decades. Our electricity use has DECREASED due to advancements in technology. Don't live in fear.


And as far as your charging math though - where are you, the Communist State of CA? Those numbers I'm seeing you post look like ~.10/KWh. National average for off-peak is significantly less. And then there's Teslas Superchargers and any other public use chargers that may be available.
Actually our electric usage has INCREASED due to population increase and more usage of electric powered tools, electronics, and machinery. The problem is that the grid is NOT increasing in size or capacity, quite the opposite. They keep closing "dirty" power plants, but not replacing that capacity with anything considered as a "base load".

For what it's worth, I live in Texas which has one of the lowest electric rates in the country. The electric rate is only 6.5˘/KWh, but when you add in the taxes, line fees, administration fees, and other crap that's attached to your bill, guess what - 10˘/KWh. Check YOUR math and find out what you're doing wrong. Throw out any "rebates" or other con games and tell us what your electric rate REALLY is.
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Old 07-09-2017, 11:48 AM
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Originally Posted by Diseasel300 View Post
Actually our electric usage has INCREASED due to population increase and more usage of electric powered tools, electronics, and machinery. The problem is that the grid is NOT increasing in size or capacity, quite the opposite. They keep closing "dirty" power plants, but not replacing that capacity with anything considered as a "base load".

For what it's worth, I live in Texas which has one of the lowest electric rates in the country. The electric rate is only 6.5˘/KWh, but when you add in the taxes, line fees, administration fees, and other crap that's attached to your bill, guess what - 10˘/KWh. Check YOUR math and find out what you're doing wrong. Throw out any "rebates" or other con games and tell us what your electric rate REALLY is.


Month of May 2017, I used 1273 KWh. My total bill was $147. Thats ~11.4 cents per KW/h. My power company is a co-op, and my bill does not specify any rates, but they do have a dedicated EV program:

https://www.jacksonemc.com/home-manage-my-account/residential-rates/residential-plug-electric-vehicle-service-schedule-apev-17
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Old 07-09-2017, 12:17 PM
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Originally Posted by kendogg View Post
Month of May 2017, I used 1273 KWh. My total bill was $147. Thats ~11.4 cents per KW/h. My power company is a co-op, and my bill does not specify any rates, but they do have a dedicated EV program:

https://www.jacksonemc.com/home-manage-my-account/residential-rates/residential-plug-electric-vehicle-service-schedule-apev-17
Pretty close to the national average which I think is .12 kw/hr which I think is what I used for my calculations
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Old 07-09-2017, 12:20 PM
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Bolt is a PITA to charge...

Well, the most important issue with the Bolt is that it takes forever to charge. It is impractical to take it on a road trip. Who wants a car that can only travel 235 when there is no charging network? And style, who wants a Bolt when you can drive a Tesla Model 3? The base price of a Model 3 will be comparable to the BMW 3 Series (which 2016 sales were down 25% in 2016! as consumers wait for the M3), Mercedes C Class and the Audi 4 and fuel is 1/3 the cost with a drivetrain that will last exponentially longer. I think this is a huge game changer which is what the stock market is telling us. Ford and GM's stock price has been going down for 4 years while car sales have been in record territory the last few years. A disruptive change is going to come whether you personally will welcome the change.
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Old 07-09-2017, 01:32 PM
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No charging network? I looked on PlugShare.com and there are fast charging stations all over Connecticut.

There is a balance between charging rate and battery longevity. Batteries charged slower last longer. Model 3 batteries may charge faster than the Bolt EV but they probably won't last as long. The Tesla and the public fast charging network charge rates are't all that different.

The Bolt and the Model 3 are city commuter cars. At these current miles per charge neither is a good road trip car.

TimFreeh: Can you please reference where you found the Tesla will loose 4-6000 watts per day? That's a huge amount. All I've found on the internet is 3-6 miles per day and that should be somewhere about 1000 watts, plus or minus.

Has anyone commenting here owned an electric car?
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  #9  
Old 07-10-2017, 02:20 AM
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Originally Posted by TimFreeh View Post
I've also read about the Model S that went 200K miles and only lost 6% of its battery capacity due to battery fade. Of course Li-on battery life lifecycle is a well-understood issue and if you use the standard charge/discharge expected cycle life you'll find that at about 150K miles the battery packs should be down to about 60% capacity. Everything I've ever bought/used that has a Li-on battery pack has exhibited the exact same battery fade issues as the charge/discharge cycles add up. Not really sure why Teslas are apparently immune to this issue but apparently they are? I'd like to hear more about how Elon has side-stepped the physics of battery fade. If he has he should license and sell the technology to iPhone battery makers and cordless tool battery makers because that technology would truly be 'disruptive'.

As far as your EV's, coal and 30% thermal efficiency modern CDI internal combustion engine argument I suggest you do a bit more research about the thermal efficiency of modern power plants vs modern CDI engines. They are pretty much identical.

If the Model 3 is such a game changer and its disruptive technology how come the Chevy Volt which has the exact same specifications and costs as the Model 3 is languishing on the sales floor?

Battery techonology is getting better every single year. No doubt Tesla has the latest and greatest cell chemistry going in their cars. I can't quite remember but normally battery warranties are to 80% of original capacity after 100,000 or 150,000 miles or whatever


No doubt CDI is efficient, but remember an ICE is hardly ever run under ideal circumstances (stop start, idling, running accessories). How much fuel goes to waste every year just idling the world's engines? It would be millions of litres...
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