My new car can go 410 miles on the energy of one gallon of petrol; unmodified!
My new car can go 410 miles on the energy of one gallon of petrol; unmodified!
It has no transmission or driveline to require regular maintenance every ~200,000 miles. All wheel drive with vector traction control. Aerodynamics rule it's design with factory rear wheel cover spats, smooth lines, swept built in kamback, and ultralight weight construction. https://lightyear.one/lightyear-one/ |
Wow that's great.
Open a garage entry for your new car and please keep the details about the car to one of the already threads about the Lightyear One, like this one: https://ecomodder.com/forum/showthre...uct-35317.html |
Wow, did you really buy one? They look very cool but quite pricey.
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They are not out yet. Deliveries start in 2021 according to them. I like the look of it :thumbup: Oh, and $170,000. Looks like they jumped on the carbon fiber bandwagon...
I could use some aero wheels for my car, right now I just have light wheels. They kind of look like BMW's i3 wheels so i'm guessing they use the same tires. Super tall and skinny. |
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Even if I can't pull the rest of the cost out of my hat by then, they can keep my 4k for bringing to market such a modern car. I've lost more money than that on a bar bet... https://lightyear.one/reserve/ |
Have you performed a cost analysis against a Prius of Leaf to see when the break even point is, or yearly cost would be?
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That's like 12 miles per kwh.
The best I can do in my leaf is about 5.5 miles per kwh. Electric motor cycles usually don't break 10 miles per kwh. It would have to average 5kw at 60 mph to make 12 miles per kwh. That's less than 7hp. It doesn't look anywhere near that aerodynamic. So when it doesn't get 400mpge don't be surprised, or if it only can approach 400mpge at 20mph with no heat or A/C just remember we told you so. |
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I've held an Arcimoto reservation number for more than 2 years. I'm waiting for them to ship a model at their advertised price point. They're following Tesla's policy of shipping the upmarket models first. Quote:
https://ecomodder.com/forum/showthre...res-25208.html See especially Permalink #139 I think they'd look best on 1947 MG-TC 19" knock-off wire wheels. :thumbup: |
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They list solar charging at 12km/h. I have roughly 1/2 that area of panels on my van and the most I've seen is ~700wh/day. But at least in theory, if you park in the sun and don't drive a lot you'd have infinite mpge based on your grid charger usage. |
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NOPE There are things in life more important than just money and ROI. Like the ability of my grandchildren to breath in a world not fighting over centralized oil resources! Bean counters make me sick! |
There's value in the concept.
While at this cost point a regular Tesla and a large home based solar array makes more sense (*) in most scenarios, the relative independence (even if you get stranded with nowhere to charge, you just need to wait and eventually you can move on) has strong appeal. Even if you never need it. But that's a given. So many 4x4's never leave the pavement. We live by illusions. Even if your use case for the LightYear One turns out to be an illusion, it is a good one. We (the truck, MPV, muscle car commuters) need better illusions... (*) as an afterthought, a second hand Mirage, energy-usage focused home improvements and an even larger solar array for the same money makes even more sense. But less fun? |
The biggest problem I see is that you'd have to leave it out in the weather.
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Buying an electric car isn't going to save the world.
If any one is really interested in saving the world then they should be riding a bicycle. |
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https://3c1703fe8d.site.internapcdn....070c3b2b7b.jpg https://techxplore.com/news/2019-07-...tric-cars.html Quote:
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That’s nice for a 1/64th scale model. Given that all-electric cars aren’t “clean” in any reasonable sense of using that word; and then the bean-counting financials which have to account for the pesky military’s, etc, needed for production where materials are imported. Maybe it will scale up. . |
Oh 34% efficient cells?
They probably cost 10x as much as 24% efficient cells. Solar cells can go all the way up to nearly 50% last time I checked. The light year thing probably also uses unusually higher efficiency, super expensive, funky element containing, planet destroying, radioactive waste byproduct solar cells too. |
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That being said, it's still pretty cool. Heck, I still have my place in line for an Elio! |
I'm just wondering how much petrol I could buy for £130,000.
Or maybe I should buy a 30k Leaf, charge at home on my 5kW solar, and buy a seaside home with the £100,000 I've saved. The answer to a question few had even been asking... |
If the dc to dc converter and inverter is super efficient (it's possible) and the car gets driven like 12 mph yeah it might hit 10 miles per kwh.
I hear people who use their leaf as its design intended can hit 6 to 7 miles per kwh, which is using it at low speeds in the city. If the leaf had a super efficient drive system and eliminate most of the stand by losses, which is about 700 watts on a leaf like mine, might hit 10 miles per kwh. But if you drive on the highway and use A/C you won't see anything near 10 miles per kwh, more like 5 miles per kwh. Don't spend 30,000 on a leaf, get a used one a few years old for around 10,000. |
...or get a new one for ~$16k after incentives if you live in Oregon.
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That sounds sustainable.
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Normal accessories, no heat or A/C, trying to eco drive in the city, in warmer weather, keep it under 35mph.
All bets are off in winter. I see people who eco drive them in the city hit 6 to 7 miles per kwh. Knock most of that 700w load off the top and you get more miles per kwh. |
Let us know if and how you manage to convert one gallon of petrol in to that amount of electricity...then I'll be impressed!
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A parlor trick that can possibly be accomplished under a very specific set of conditions.
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Heck, get 30-40% of said 410 miles (peak engine efficiency) and I will be just as impressed.
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To compare it to my leaf which achieved the equivalent of about 170 mpg over a 1,210 mile average for the month of July is pretty good. People who drive a leaf in the city and keep it under 35mph can hit about 200 mpg. Even my primitive leaf with its at best 2008 technology is well over 1/3 of the way to 410mpg. |
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Considering it is in the top 3 rated for city efficiency with the Ioniq pulling off some sort of magic and the significantly lighter iQ EV being the only ones ahead of it, I am skeptical real world claims will come in much over 200 for the car. Even at 25 mph, the best I can get is scarcely over 9 mi/kWh or 300 MPGe. |
The only way I see it possible to exceed 400 MPGe at this point requires absolutely ideal conditions, very slow speeds, and relying upon the solar panels for full production (which I doubt will ever happen).
Using the specs from their site, the panels provide a maximum of 1.27kW. So lets just assume that this car can regularly actually sustain 200 MPGe, or 6-ish mi/kWh at 35 MPH. In one hour, the car would obviously travel 35 miles, consuming about 6kWh. Subtract full production of the panels to see about 4.7kWh pack expenditure. Flipping that back to mi/kWh, we get about 7.4. That is still well under 300 MPGe, or most roughly, just under 250 MPGe. The only ways to get over 400 MPGe with those calcs in mind are to assume one or more things to be true: 1) This car sees significantly over 300 MPGe in typical driving, 2) They are lumping in potential power production from the panels while parked, or 3) It must be driven far slower. But if we get to add in solar panel production, I am going to take credit for the 5 kW array on my home, the less than 100 miles I typically drive in a week, and always charging at home (when I'm not conducting flawed aerodynamic tests :rolleyes:). The numbers on that cross infinity in all but November and December here in the northern hemisphere. |
Don't forget it is designed by the team that built the Stella solar racer, which got maybe over 1000 MPGe at highway speeds - while seating 4 adults.
Extreme aerodynamics, very low (less than a meter IIRC), extreme light weight and bicycle-like tires did that. While it does run around like a car the Stella is way too vulnerable to be practically viable. The Lightyear is strong enough to be safe to drive, but it still has very narrow wheels, low height, low weight and low air resistance, so the power to move it is in a completely different league than other roadworthy EVs. If they claim 400 MPGe then don't just assume they lie. Instead appreciate that an economy race winning team knows quite a lot about calculating MPGe. |
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I think, as I illustrated however, that the math suggests a lack of credibility on the MPGe claim without fudging other factors. Nobody is going to get 400 MPGe out of one of these cars without that fudge factor (and I will happily admit being wrong if they do). Rolling resistance alone is likely to make that an exceptionally lofty goal. I will suggest that the Lightyear could potentially be the most stellar production highway performer to ever hit the road. They have certainly devoted plenty of good design to that end. |
If you think 400 MPGe is out of the question...
https://inhabitat.com/worlds-most-ef...us-26135-mpge/ 26.135 MPGe! Okay, that is an extreme solar racer. But it should not be that hard to build something roadworthy if it is allowed to use 65 times as much power? |
Dont forget to include the inefficiencies of the coal powered station generating the electricity to run this car.
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This thing has a CD probably <0.10, is as large as a coffin, and races at a blistering 25 km/h. When you scale that up to something that seats 4 and isn't the size of a matchbox, has a significantly higher CD and frontal area, and drives on the highway...400 MPGe is a tough goal to meet. Even the VW XL1 was less than 300 MPGe running on electricity. (Keep in mind that power required to overcome aerodynamic drag increases with the cube of velocity). |
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Coal is on its way out, wind and solar are growing. For the first half of 2019 Germany generated more electricity from wind and solar than from coal and nuclear, and Germany traditionally burns, or burned, a lot of coal. |
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