A light vehicle need not be unsafe. I still think light vehicles will
eventually win. They need not be small. It is a numbers game. Look at a 3000
pound vehicle with a Leaf battery pack. Lets say a 22 foot long Ultravan. If
you put 4kw of solar panels on the roof it would charge in 10 hours in bright
sunlight. The weight and battery pack just need to match. Now small size.
Enclosed motorcycle with a 7.5kw pack weighing 400 pounds. 400 mile range. I
want one. Lawrence Rhodes
From: paul dove <dov...@bellsouth.net>
To: Lawrence Rhodes <primobass...@sbcglobal.net>; Electric Vehicle Discussion
List <ev@lists.evdl.org>
Sent: Wednesday, September 14, 2016 3:46 PM
Subject: Re: [EVDL] EVLN: Na Researchers reveal 650mi on single-charge Tesla
'superbatteries'
Yeah, I think your mixing the two up by lumping them together as more
efficient. Aerodynamics buys you very little gain especially below 50 mph.
Weight is directly related to energy consumption by the formula I gave. I did a
spread sheet and graph on my car and weight dominated till you got over 50 to
60 mph. The problem with reducing weight in a commercial vehicle is that
something else has to give. Safety features, comfort and amenities, such as air
and heat or seats, sound blocking etc. vey small market if any for those cars
especially since it's still going to cost as much as a midsize sedan. No, I
still believe the gains will be seen in battery advancement.
Sent from my iPhone
> On Sep 14, 2016, at 11:48 AM, Lawrence Rhodes via EV <ev@lists.evdl.org>
> wrote:
>
> Hey, Paul,
> Aerodynamics is important. I guess you never heard of Dave Clouds Dolphin or
> the project Lee Hart & Jerry Dycus have been doing for a decade. There is no
> reason to make cars from steel other than economy of build. There is no
> reason not to be aerodynamic except for styling. It's proven that a sparse
> but comfortable vehicle will perform much better than a Tesla in efficiency.
> Of course not in performance. That being said I'd love to have a Tesla. But
> that being said if I had a Tesla I'd use much more energy than I'd need to go
> 400 miles. In a properly designed vehicle 15kw would get you 400 miles. In
> a porky Tesla 85kw ...lets be generous...300 miles. So almost 6 times the
> energy to go 3/4trs the distance. Seems to me light and aero is the way to
> go. Don't forget it's even more efficient when driving during daylight hours
> as the solar panel can extend the range even further than 400 miles. The
> record set by Stella Lux is 932 miles on one charge (over two days)with
> assistance from the solar panel. There is belief and then there is the math.
> Just do the math all you car designers. Lawrence Rhodes
>
> From: paul dove <dov...@bellsouth.net>
> To: Lawrence Rhodes <primobass...@sbcglobal.net>; Electric Vehicle Discussion
> List <ev@lists.evdl.org>
> Sent: Wednesday, September 14, 2016 3:50 AM
> Subject: Re: [EVDL] EVLN: Na Researchers reveal 650mi on single-charge Tesla
> 'superbatteries'
>
> Hey Lawrence,
>
> Yeah I don't believe that is true. Their may be some game by reducing weight
> I don't think aerodynamics is going to play into it unless it's a sports car.
> Most people purchase a car
> For other reasons then economy. Comfort, utility, whatever fits their
> lifestyle. Weight is the greatest factor in the range of your vehicle. I have
> two electric vehicles and they both follow the rule of thumb weight/10 =
> watts per mile. This changes based on how you drive but that's the average
> again. I believe battery technology will continue to improve for another 10
> years. I think the bigger problem is the charging infrastructure. The cars
> are good enough now and the batteries are good enough now there's just a
> shortage of places to charge. They shouldn't start charging stations at every
> gas station preferably fast chargers.they need to quit giving away free
> energy and start charging for the electricity so that the stations are
> reliable and maintained by someone making a profit. Then there would be no
> obstacle as to where you could drive your car and that's coming I'm sure of
> that.
> Sent from my iPhone
>
>> On Sep 12, 2016, at 10:10 PM, Lawrence Rhodes via EV <ev@lists.evdl.org>
>> wrote:
>>
>> Clearly the next frontier in electric automobile design is not the battery
>> but the efficiency of the vehicle. If it is lighter and more aerodynamic
>> this will allow the use of smaller packs and longer range. With smaller
>> packs the charging time is reduced taking away the #1 problem with electric
>> cars. The charging time. Currently Solar Cars from the Tesla Crusier Class
>> at the World Solar challenge with out solar assistance have a 400 mile range
>> on 15kw of batteries. Of course the vehicles weigh under 1000 pounds have
>> seating for four and the tires are very narrow. I've been in Stella. It is
>> comfortable and practical. The next electric vehicle I build will be light
>> and efficient. Lawrence Rhodes.....
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>
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