Apr-22-2021 06:20 AM
Apr-29-2021 05:13 PM
2014 RAM 3500 Diesel 4x4 Dually long bed. B&W RVK3600 hitch • 2015 Crossroads Elevation Homestead Toy Hauler ("The Taj Mahauler") • <\br >Toys:
Apr-28-2021 08:55 AM
Apr-28-2021 08:41 AM
Apr-27-2021 09:26 PM
vern kelly wrote:
One thing for sure there will be Lawyers specializing in "cord trip and fall injuries"
One question I never see brought up is longevity. Average US car on the road today is ~12 years old. Many cars in California and the west 20 years or more on the road with original drive train. Tesla batteries are guaranteed for 8 years retaining 75% of their charge range. I suspect a steep drop off after ~10 years regardless of miles driven. This could have a big impact on used EV prices.Probably battery replacement at that age and would offset today's cars maintenance somewhat.
Not sure of the average semi truck on the road age today. That would be good to know.
I'm serious about the Lawyers! Can you imagine a four car family with all electric cars with some parked on the street!
Apr-27-2021 09:02 PM
Apr-25-2021 07:51 PM
Bird Freak wrote:
How large of a power grid will be needed to recharge 2 or 3 hundred trucks such as Amazon or UPS or even USPS overnight? What will it cost to get the power to the charging stations?
Lots of expensive problems to work out.
Apr-25-2021 07:42 PM
Apr-25-2021 07:17 PM
Apr-25-2021 06:51 PM
Coon hunter wrote:
I am not for or against ev. But they have some major issues to figure out. The claim is less to no pollution. These vehicles are not using plastic,battery's tires. From what I have heard a prius battery lasts on average 50000mi.@ $6000. if i did the math right add.12 per mile. What happens to this battery when it will no longer take a charge. Where are they getting the "minerals" to produce these batterys. I'm sure they are not mining them that would be bad for the environment. Batterys to last the longest like to be recharged at the same rate as they are discharged. I don't know if the chargers are capable but they should be able to auto adjust the charge rate to the average discharge to get the most life from the battery. What is the plan to charge all these ev when a storm hit and the grid is down. Still will need gasoline to fuel the generator, water pumps, chain saws, the list goes on. Solar has issues as well. They have a relatively short life span. And they need to come a long way on producing them with less energy. Currently they require more energy to produce than they can put back into the grid within thei life span. Then when they go bad they go to the land fill. Still need oil make them too they are plastic. Another big strain on these batterys will be heaters and ac. These draw quite a few amps to run where currently the heat is free and the ac you might see a tiny bit more fuel consumption to run. These are just a few issues I see with ev in general and would like to know how they are planning on being more green before I truly get behind them. Gasoline was used originally because it was a by product from making kerosene for gas lanterns and was being thrown away the ice turned that into a usable product. Electricity is nice when it works. But there are so many times that it doesn't and when you are dependent on a single item it is easy to get screwed.
Apr-25-2021 06:02 PM
Coon hunter wrote:
I am not for or against ev. But they have some major issues to figure out. The claim is less to no pollution. These vehicles are not using plastic,battery's tires. From what I have heard a prius battery lasts on average 50000mi.@ $6000. if i did the math right add.12 per mile. What happens to this battery when it will no longer take a charge. Where are they getting the "minerals" to produce these batterys. I'm sure they are not mining them that would be bad for the environment. Batterys to last the longest like to be recharged at the same rate as they are discharged. I don't know if the chargers are capable but they should be able to auto adjust the charge rate to the average discharge to get the most life from the battery. What is the plan to charge all these ev when a storm hit and the grid is down. Still will need gasoline to fuel the generator, water pumps, chain saws, the list goes on. Solar has issues as well. They have a relatively short life span. And they need to come a long way on producing them with less energy. Currently they require more energy to produce than they can put back into the grid within thei life span. Then when they go bad they go to the land fill. Still need oil make them too they are plastic. Another big strain on these batterys will be heaters and ac. These draw quite a few amps to run where currently the heat is free and the ac you might see a tiny bit more fuel consumption to run. These are just a few issues I see with ev in general and would like to know how they are planning on being more green before I truly get behind them. Gasoline was used originally because it was a by product from making kerosene for gas lanterns and was being thrown away the ice turned that into a usable product. Electricity is nice when it works. But there are so many times that it doesn't and when you are dependent on a single item it is easy to get screwed.
Apr-25-2021 05:53 PM
Apr-25-2021 06:23 AM
Reisender wrote:
Scooby I am no expert. But for example the cars battery can be routinely run down to almost zero with no issues. TESLA I believe recommends daily operation between 20 and 90 percent but also adds that running between 100 and very low percentage is fine. So yes, you can draw the battery down to pretty much zero.
time2roll wrote:JRscooby wrote:Yes however the cables would have to be immense and the batteries would charge/discharge faster than optimum for long life. Still best to have a controlled charging cycle at the correct maximum. Using the existing down time of the truck in effect takes no extra time. If the truck makes nine 20 minute stops in the day to unload that is three hours of charging and no time lost in the schedule.time2roll wrote:
While the en-route charging shown in the video is great.... The real benefit will be having the charging station at the destination loading dock to charge where the truck is already stopped to unload. Especially for fleet vehicles such as grocery stores. Will increase the incentive to get solar up on the store roof too.
I will say I know nothing about EVs other than I like the idea. That said many times in my life I have seen a battery that was fully charged hooked to a mostly discharged one with large cables and in a very short time the voltage in the discharged battery make a big jump up.
Now to go into theory, or really show my ignorance. Would it be possible to build a stationary battery bank, with say twice the capacity of the battery of the EV, and such that the fully charged voltage was 10% higher than full charge on EV? Then let solar panels on the roof charge that battery. The EV, pulls in with a low battery. Large cables, or better buss bars, join the batteries. Kick in a relay, wouldn't that charge the EV to full charge in a short time? If the EV was to set overnight, the cables could be smaller, charge slower.
Gjac wrote:
I like your battery idea if something would be able to top off the batteries but I think it would be more practical to just change out the batteries when they get low then the EV station would charge them over night until the next truck or MH needs one. Quick change over the time it takes to fill a 100 gal diesel tank.
Apr-25-2021 06:07 AM
Gjac wrote:Reisender wrote:When you say 26 to 45 cents do you mean per KWH?Horsedoc wrote:
Not one answer to the questions that should be on everyone's mind..
How long to charge a heavy duty truck?
What does it cost?
If this place saves on petro chemical fuels, where does the energy come from that generates the power to do the charging?
Well, the article mentions a 1 megawatt rate which is about three times faster than at currently available vehicle charge stations. But that is changing fast. So assuming the 1 megawatt is achievable probably a couple hours for a 1 megawatt pack. Who knows.
Cost at current fast chargers is around 26 cents to 45 cents so multiply that by the pack size and go from there. It costs me 8 bucks to fill up at home, around 20 bucks to fill up at a supercharger. If a truck has a pack 10 times bigger than mine at those rates about 200 bucks.
Where the energy comes from depends on the country, region, province, state etc. In our province it’s from Hydro. Etc etc.
Not an expert. :).
Apr-25-2021 05:43 AM
free radical wrote:valhalla360 wrote:PartyOf Five wrote:
While I don't question any of the numbers above, I also don't question the business sense of these & so many other companies - if its not going to work, they're not going to invest $1 into it. Success (according to the masses at least) goes to those who make the most money, and the ones who lead this race are generally the ones who can think beyond the box.
With wind, solar, and other power forms becoming popular, it could be reasonable that that coal plant has fewer customers, or that it's customers need less power - enabling more charging stations at the truck stop.
From Wikipedia: In 2019 there were 241 coal powered units across the United States which generated 23% of the United States electricity in 2019, an amount of electricity similar to that from renewable energy or nuclear power... Installed capacity was about 236 GW.
So if you have 5 coal plants per state today, then each serves a couple hundred miles- is there a need for 14 truck stops within each one's service region?
If it was the businesses leading, I would agree.
The problem is this is the politicians driving the process and using our tax dollars to allow them to ignore the financials. If the govt throws a few billion at it, industry happily will put together a program to test running trucks on unicorn farts.
Coal plants are being taken off line. We are actually entering a period where excess production capacity is steadily going down.
I wasn't proposing to build coal power plants but just using that to explain the scale of what these chargers need in terms of power supply. You could use in nuclear, hydro or solar the charging stations as equivalents, doesn't matter but we are talking huge concentrated demands. A couple acres of solar panels aren't going to be even close to enough to service an individual truck stop. And more importantly, the existing power plants are already being used for other purposes. For every 14 truck stops as described, you are going to have to build the generation capability of an average power plant.
.
This OUR TAX dolars fud always cracks me up,
Our taxes arent nowhere near enough to pay for any large expenditures.
Fed simply prints trilions more $$ to keep the show going,
https://youtu.be/mgMp3p44J7Y