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Old 01-12-2018, 06:40 PM   #1 (permalink)
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Dutch Lightspeed fully solar car by 2019

http://www.sciencealert.com/a-fully-...e-road-by-2019

Yep

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Old 01-13-2018, 06:16 PM   #2 (permalink)
s_t
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Good to see this progress

I'm still planning a motorhome that will be self charging (solar) when used as my daily driver.

http://ecomodder.com/forum/553098-post22.html
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Old 01-13-2018, 06:43 PM   #3 (permalink)
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The oil industry won't allow a tech that could hurt them so badly over night to ever come to fruition.
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Old 01-13-2018, 10:51 PM   #4 (permalink)
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This is in the corral for a reason:

https://www.engineering.com/Electron...r-Powered.aspx

Only mistake is that ~6hp is enough for a small car to cruise at a decent rate, but that assumes a five fold increase in efficiency over what's currently available.

I've got 5x4' of panels on my van. That's not enough to run a diesel engine, HVAC and radio.
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Old 01-14-2018, 01:48 AM   #5 (permalink)
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It seems the writer of that article doesn't even know the difference between kW and kWh

I don't think anyone is saying the solar panels will output enough kW to run the motor directly.

However, if a vehicle has a large enough collection area (and my 7.5m long x 2m wide motorhome will have significant collection area, and the lightspeed seems to have significant solar panel surface area also) then all that energy can be collected during the day and saved to batteries. End result is actually significant kWh per day direct from the sun - certainly enough for my local driving habits.

I don't see any downsides to this - my emergency backup will be, shock horror, plugging in and charging - like any other electric car does...
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Old 01-14-2018, 02:34 AM   #6 (permalink)
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Quote:
I don't think anyone is saying the solar panels will output enough kW to run the motor directly.

End result is actually significant kWh per day direct from the sun - certainly enough for my local driving habits.
Technically there's no result until you've done it. It takes my 340W panels 2hrs to bring my 120Ah starting battery up to float after a drive (with the alternator connected). My van is 5.5 x 2m, so not exactly small, there's realistically only space for ~680W of panels unless you find ones that happen to fit exactly. On a bigger van you might get 1000W of panels onto your vehicle. Max output will be less than half rated output at midday, summer solstice.

You can use solar to top up leisure batteries fine, drive batteries on a motorhome, not so much. It's going to take a lot of kWh to move a vehicle that size.

I looked into converting my old T5, would have cost AU$30k in batteries (new) for a ~100km range. If you're trying to build a camping vehicle the size of a Sprinter it's simply way too expensive.

Not sure what the goal is- a van that size is way too big for a daily, our carparks aren't designed for things like that, it's bad enough with a mid size van. A car+ trailer is actually more practical/ maneuverable in the city.

Quote:
Originally Posted by s_t View Post
I don't see any downsides to this - my emergency backup will be, shock horror, plugging in and charging - like any other electric car does...
The down side is you have to park in the sun. The sun destroys paint work & plastics and means it's always scorching hot inside. There's never a prize for guessing which cars have always lived outside and which have been garaged.

If you're using flexible panels they only have a ~5 year life span. Ironically your solar panels will last longer if you park in the shade. I still park in the shade wherever possible. Frankly, vehicle mounted solar is a last resort.

It's far better to park in a garage and put the panels on that. That way you can use reliable glass panels and angle them correctly.
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Old 01-19-2018, 04:09 AM   #7 (permalink)
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True that you need to park in the sun for such panels to provide the best assistance! Obviously this isn't going to work for those who want to park undercover, or who park in shaded spots.

However, there are plenty of vehicles, including mine, that sit in the sun all day every day.
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Old 01-19-2018, 05:55 AM   #8 (permalink)
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Might actually be more practical to have a shaded area via "car port" which has big ass solar panels on it's roof, which feed power to the car via a plug in solution.
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Old 01-20-2018, 06:26 PM   #9 (permalink)
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That would suit some better - those who park there car under the carport during the day.

It'd be less practical for those who don't have a carport at work (or wherever the car is parked during sunshine hours).

Need to remember the car market is huge. No single car is going to suit everyone or every situation. Your (and my) experience doesn't apply universally. There most definitely is a large qty of cars throughout the world that spend most of the day sitting directly in the sun.

If Lightspeed were able to capture even 0.1% of that market, I suspect they will have succeeded beyond there expectations...

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