al.us
Sent: 13-Jul-20 8:34:47 PM
Subject: Re: [EVDL] Solar powered vehicle panel requirements.
Oops, forgot to post a link to the photo
https://sourcegraphics.com/files/2914/8780/2404/grey_rook.jpg
Here is a hires picture of a rook printed with an MSLA printer, realise th
Oops, forgot to post a link to the photo
https://sourcegraphics.com/files/2914/8780/2404/grey_rook.jpg
> Here is a hires picture of a rook printed with an MSLA printer, realise that
> the actual piece is 2"
> tall.
___
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July 12, 2020 4:11 PM, "Peri Hartman via EV"
> Using a small scale wind tunnel just triggered an idea. How hard would
> it be to make a 3D printed model of your car ? (Pretty hard when you
> have to consider that it's every tiny bump that makes a difference in
> wind, but doable.)
Some of the
As I recall for research I did 20 years ago, as you scale down the model you
have to increase the wind speed to get the same drag effects. Using a model
that is smaller than 1/4 scale results in wind speeds that are impractical.
I don't remember the exact details but it has something to do with
From: Peri Hartman via EV
>Using a small scale wind tunnel just triggered an idea. How hard would
>it be to make a 3D printed model of your car ? (Pretty hard when you
>have to consider that it's every tiny bump that makes a difference in
>wind, but doable.)
How about if he finds a plastic
inal Message --
From: "Lee Hart via EV"
To: "Electric Vehicle Discussion List"
Cc: "Lee Hart"
Sent: 12-Jul-20 2:26:39 PM
Subject: Re: [EVDL] Solar powered vehicle panel requirements.
When I put a small flat 4'x6' utility trailer on my Prius, the
mileage went from
When I put a small flat 4'x6' utility trailer on my Prius, the
mileage went from 55 down to 40! And that was with no load or added
wind drag other than the trailer. So it is quite silly to think one
can add a trailer to get SOlar without losing more in the trade!
Aerodynamics is funny stuff.
On 7/11/20 9:17 PM, Robert Bruninga via EV wrote:
When I put a small flat 4'x6' utility trailer on my Prius, the mileage went
from 55 down to 40! And that was with no load or added wind drag other
than the trailer.
There is a LOT of variance in trailers. I have two small flat trailers
It has to be big enough and light enough and aerodynamically sound. The
formula is 850 pounds and 1.5kw battery and a 1.5kw solar panel. CD of .16.
Lawrence Rhodes
On Saturday, July 11, 2020, 7:18:26 PM PDT, Robert Bruninga
wrote:
When I put a small flat 4'x6' utility trailer on my
When I put a small flat 4'x6' utility trailer on my Prius, the mileage went
from 55 down to 40! And that was with no load or added wind drag other
than the trailer.
So it is quite silly to think one can add a trailer to get SOlar without
losing more in the trade!
Bob
On Fri, Jul 10, 2020 at
From: paul dove
Cute! The problem is to design one that meats current crash safety requirements
and still be light and efficient.
The Stella racers are built like Formula 1 and use 5 point belts. Certainly
legal in Holland and probably here. They would fall under at least special
Cute! The problem is to design one that meats current crash safety requirements
and still be light and efficient.
Sent from my iPhone
> On Jul 11, 2020, at 10:58 AM, Lee Hart via EV wrote:
>
> Lawrence Rhodes via EV wrote:
>> It's a math problem that can't be solved. At least not with
My 3 solar panels (240W) on my Franken-Volt add about 30 miles a week.
See http://aprs.org/my-EVs.html
Bob
On Sat, Jul 11, 2020 at 4:11 AM Lawrence Rhodes via EV
wrote:
> To: ev@lists.evdl.org
> Subject: Re: [EVDL] Solar powered vehicle panel requirements.
> Message-ID:
> Conten
Lawrence Rhodes via EV wrote:
I commonly get much better range. My indicator of accumulated data says 4.9 miles per kwh. Your mileage may vary. Lawrence Rhodes--
That's exactly the same as our 2013, Lawrence. We must be doing
something right.
Lee Hart
--
If happiness is on your mind,
Lawrence Rhodes via EV wrote:
It's a math problem that can't be solved. At least not with today's
technology. I think it is a weight problem that can be solved with today's
technology...at least by students in Holland. Of course you can't do it with
the piggy Tesla's and Bolts. Something much
To: ev@lists.evdl.org
Subject: Re: [EVDL] Solar powered vehicle panel requirements.
Message-ID:
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It's a math problem that can't be solved. At least not with today's
technology.
I think it is a weight problem that can be solved with today's
It's a math problem that can't be solved. At least not with today's
technology.
On 7/10/2020 2:21 AM, Lawrence Rhodes via EV wrote:
The math problem here is consumption over time. A solar racer with a 5
passenger capacity 850 pound weight with a coefficient of drag of .16 rolling
on moped
I commonly get much better range. My indicator of accumulated data says 4.9
miles per kwh. Your mileage may vary. Lawrence Rhodes
On Friday, July 10, 2020, 9:50:10 AM PDT, Tom Mandera
wrote:
Assuming the 24kwh battery Leaf goes 80 miles, that's 3.3 miles / kwh or
0.3kwh/mile or
That math seems wrong to me. 3200 Wh at 25Wh/m = 12.8 miles not 1 mile.
On Friday, July 10, 2020, 8:22:02 AM CDT, Tom Mandera via EV
wrote:
There are 400w panels out that are roughly 7'x3.5' So a rather
reasonable 7'x7' trailer could produce 800w, which is a good amount of
power -
There are 400w panels out that are roughly 7'x3.5' So a rather
reasonable 7'x7' trailer could produce 800w, which is a good amount of
power - but not nearly enough.
Assuming they're mounted flat, that's 800w at high noon, and less at
every other part of the day. We could expect something
The math problem here is consumption over time. A solar racer with a 5
passenger capacity 850 pound weight with a coefficient of drag of .16 rolling
on moped wheels with a 1.5kw panel and 15kw battery can attain 45mph
continuously without using battery power. A Nissan Leaf going 55mph
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