Another significant factor is what an e-bike replaces.
If it merely 100% replaces a pedal-only bike, then clearly it is
dirtier.
However if it replaces a pedal-only but also replaces 50% of car trips,
it is incredibly cleaner. Even if the car is an EV.
Peri
------ Original Message ------
From: "Michael Ross via EV" <[email protected]>
To: "Mark Abramowitz" <[email protected]>; "Electric Vehicle
Discussion List" <[email protected]>
Sent: 23-Aug-15 10:41:45 AM
Subject: Re: [EVDL] Bu's e-wheely bad idea> weaving-recklessly the
wrongway HT delivery
Mark,
That is kind of naive, or not resulting from careful thought -
"cleanliness" of any electric use depends on the power generating
source.
I have 6kW of solar at home - pretty clean. If I charged the light EV
pack
with a gas generator that would be pretty stinky. Grid power around
here
is primarily NG from modern plants, so... you can argue about clean
there
many ways. I could probably cobble together a wood gas
generator/generator
that would stink, but be carbon neutral. Then there are all the other
options.
Light EVs are, if nothing, cheap for low income folks, they help the
sedentary wealthy get some exercise on short trips - just like the
Vermont
people noted in recent posts.
Light EVs don't waste as much energy because they generally don't go
very
fast - anything over 12mph has an air drag penalty and 80mph is very
inefficient in comparison whatever the source or vehicle. Air drag is
the
predominant energy wasting pathway.
Light EVs make a lot more sense in terms of material efficiency as they
don't have to resort to titanium, and aluminum to be lightweight
(easily
made from recovered scarp and recycled parts). If you want to do a
dust to
dust comparison.
A human is incredibly efficient if you can get sufficient distance and
trip
time. A few meals of beans and greens will get you a couple hundred
miles
if you are a hearty and practiced rider. I suspect that is how the vast
majority of the millions of EV bike owners are doing it. Someone
recently
quoted there are 126 million light EVs, bikes scooters, and so on. You
can
discount the biological miles as not pertinent, but I think the
pedal/EV
hybrid is a very worth design. Far cleaner than other alternatives for
most power sources and use cases.
On Sat, Aug 22, 2015 at 8:35 PM, Mark Abramowitz via EV
<[email protected]>
wrote:
Aren't EV miles *dirtier* for bikes? Don't they mostly use unassisted
bikes?
Sent from my iPhone
--
To invent, you need a good imagination and a pile of junk.
Thomas A. Edison
<http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html>
A public-opinion poll is no substitute for thought.
*Warren Buffet*
Michael E. Ross
(919) 585-6737 Land
(919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google
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<[email protected]>
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