Tesla New Model Unveil...

CatHedral

CatHedral

Well-Known Member
DIY-HP-LED said:
Right now it's useful for certain specific people, but as battery tech and charging infrastructure improve, so will it's utility for more people. In ten years when they phase out ICE vehicles, EVs will be a completely different animal with ranges that exceed an ICE vehicle and fast charge times comparable to a gas fill up. At some point the government might have to step in to standardize charging points for interoperability, if the industry can't come up with it's own standards.
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I just pictured a 750-kWh battery (which is needed to exceed the range of a Diesel under high load) being charged in 120 seconds (max gas fillup time) and my mind blew. I cant imagine this without a big thump or a very loud sizzle.

One way might be to have a cheap swap program. You roll into the truck stop and exchange your empty 100 kWh pack for one freshly charged. That removes charge time from the equation and replaces it with swap time, which in a properly designed robot facility ought to happen within 120 seconds.
 
DIY-HP-LED

DIY-HP-LED

Well-Known Member
CatHedral said:
I just pictured a 750-kWh battery (which is needed to exceed the range of a Diesel under high load) being charged in 120 seconds (max gas fillup time) and my mind blew. I cant imagine this without a big thump or a very loud sizzle.

One way might be to have a cheap swap program. You roll into the truck stop and exchange your empty 100 kWh pack for one freshly charged. That removes charge time from the equation and replaces it with swap time, which in a properly designed robot facility ought to happen within 120 seconds.
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You'd need the power of a fucking lighting bolt to top it up from flat, many EVs charge at 800 volts and I imagine could go as high as 100 amps, so 800KW/hr might be possible. For such a big EV perhaps two charge ports could be used. I know that thick steel is welded at much lower volts and amps, so not frying charging connectors could be an issue!

I think charge time will always exceed refueling times, but much charging can be done from home overnight for most EV's. Perhaps fast food and other road restaurants could get into the charging business too, eat while the car is topped up. Gas stations will disappear and charging points are where people might be spending a bit of time, so they will probably have ways of sucking money out of people charging EVs, some might have a park etc. These places will be more human oases than traditional gas station, designed to serve human needs and desires, as well as charge your EV in 15 minutes to an hour. EV's have far fewer moving parts and far fewer mechanics will eventually be required and there will be no fluids other than some brake and power steering fluid.
 
CatHedral

CatHedral

Well-Known Member
DIY-HP-LED said:
You'd need the power of a fucking lighting bolt to top it up from flat, many EVs charge at 800 volts and I imagine could go as high as 100 amps, so 800KW/hr might be possible. For such a big EV perhaps two charge ports could be used. I know that thick steel is welded at much lower volts and amps, so not frying charging connectors could be an issue!

I think charge time will always exceed refueling times, but much charging can be done from home overnight for most EV's. Perhaps fast food and other road restaurants could get into the charging business too, eat while the car is topped up. Gas stations will disappear and charging points are where people might be spending a bit of time, so they will probably have ways of sucking money out of people charging EVs, some might have a park etc. These places will be more human oases than traditional gas station, designed to serve human needs and desires, as well as charge your EV in 15 minutes to an hour. EV's have far fewer moving parts and far fewer mechanics will eventually be required and there will be no fluids other than some brake and power steering fluid.
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An F-350 equipped to tow has a 48-gallon capacity. This is close to 1 MWh available energy. 8oo kWh if you assume a motor run at a inefficient 40% thermal efficiency.

That matches my 750 kWh asumption pretty well.

To be "comparable" the electric recharge rate would ned to be no slower than 50% energy transfer, and that is still more than 30 kWh a second. North of one megawatt. How to transfer energy at that speed without the power melting stuff by means of simple ohmic resistance escapes me.

Dont get me wrong. The idea of an EV appeals to me. I think the Aptera is sexy, and I want to nurse my four-pot Honda along until I can get one of those. I travel light, so that should be my ideal EV from current tech.
 
doublejj

doublejj

Well-Known Member
People driving F150's are not pulling fifth wheels........This F150 lightning is for hauling bikes and kayaks...
 
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CatHedral

CatHedral

Well-Known Member
rom that company with lowest
doublejj said:
People driving F150's are pulling fifth wheels........This F150 lightning is for hauling bikes and kayaks...
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Yu can do that with a hatckback. 6 horse tralier or go the hell home. I want a truck to be a truck and not a GT with a half bed.

Like that angular nightmare TSLA calls a truck. OK what is its tow capacity? How many sheets of 4x8 drywall is it gonna take from Sac to Tahoe on 1 charge? Like the e-ford, where the hell is the longbed?
 
doublejj

doublejj

Well-Known Member
CatHedral said:
rom that company with lowest
Yu can do that with a hatckback. 6 horse tralier or go the hell home. I want a truck to be a truck and not a GT with a half bed.

Like that angular nightmare TSLA calls a truck. OK what is its tow capacity? How many sheets of 4x8 drywall is it gonna take from Sac to Tahoe on 1 charge? Like the e-ford, where the hell is the longbed?
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Need a F250 Super duty to do that....these electric trucks are targeting a larger segment of the truck buyers, most f150 owners don't have 6 horses...
 
CatHedral

CatHedral

Well-Known Member
doublejj said:
Need a F250 Super duty to do that....these electric trucks are targeting a larger segment of the truck buyers, most f150 owners don't have 6 horses...
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But they have trailers and other trucky stuff. I would not buy a truck that couldnt lay drywall flat with full support.. No Honda Ridgeline for me.

Once eTrucks match that Super Duty (in the most basic measure, cost per mile fully loaded on a 500-mile haul) I'll wake up again.
 
doublejj

doublejj

Well-Known Member
CatHedral said:
But they have trailers and other trucky stuff. I would not buy a truck that couldnt lay drywall flat with full support.. No Honda Ridgeline for me.

Once eTrucks match that Super Duty (in the most basic measure, cost per mile fully loaded on a 500-mile haul) I'll wake up again.
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I own a F250 Superduty for the one day a year I need to tow something heavy. It gets 10mpg. The other 364 days it's just a gas pig. An electric F-150 would fit nicely into my life style. Besides I also have a 12' utility trailer for hauling my Mule around.. :wink:
IMG_1465.JPG
 
DIY-HP-LED

DIY-HP-LED

Well-Known Member
CatHedral said:
An F-350 equipped to tow has a 48-gallon capacity. This is close to 1 MWh available energy. 8oo kWh if you assume a motor run at a inefficient 40% thermal efficiency.

That matches my 750 kWh asumption pretty well.

To be "comparable" the electric recharge rate would ned to be no slower than 50% energy transfer, and that is still more than 30 kWh a second. North of one megawatt. How to transfer energy at that speed without the power melting stuff by means of simple ohmic resistance escapes me.

Dont get me wrong. The idea of an EV appeals to me. I think the Aptera is sexy, and I want to nurse my four-pot Honda along until I can get one of those. I travel light, so that should be my ideal EV from current tech.
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One way to transfer energy is with carbon nanotubes, much lower resistance than copper, making them long enough is the trick, but a 3 meter charging cable would be a good starting point for such a multi strand nanotube cable, though connectors would be an issue. Don't ask me how they plan on charging electric semi trucks!

IMHO small is better for EVs and a cheap Chinese mini EV as a second vehicle that can be charged at home will be the introduction for many people.
 
DIY-HP-LED

DIY-HP-LED

Well-Known Member
doublejj said:
Need a F250 Super duty to do that....these electric trucks are targeting a larger segment of the truck buyers, most f150 owners don't have 6 horses...
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Most half tons have never carried a load or hauled anything, they are mostly used as cars, transportation. Most half tons I've seen don't have a mark on the floor of the box, they are driven strictly for image. A few tons of steel used mostly to drive a block to the corner store to pick up milk and bread.
 
doublejj

doublejj

Well-Known Member
DIY-HP-LED said:
Most half tons have never carried a load or hauled anything, they are mostly used as cars, transportation. Most half tons I've seen don't have a mark on the floor of the box, they are driven strictly for image. A few tons of steel used mostly to drive a block to the corner store to pick up milk and bread.
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One advantage a full sized truck has as a grocery getter is passenger safety in a accident. Your taking a truck to a car fight....truck will win most times. Your family is safer driving around in an F150 than most auto's (tesla's excluded)
 
injinji

injinji

Well-Known Member
rkymtnman said:
the only good truck is a ford IMO. i was looking until covid prices for a newish f250 with the gas motor. prices now are absurd. i'll wait it out hopefully.
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I'm like the Plains Indians were truck are concerned. I will ride one until it dies, use any bits that are still good, then swing onto the next one that comes along at a price I can handle. I've been driving a '98 Tacoma for 10-12 years now. It's getting to be a short-timer. Replacing it is going to be a bitch.
 
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