Don't people with motorhomes drive 300-400 miles without stopping? The
idea of making a very lightweight vehicle which, in turn, requires a
smaller battery has merit. What would it take, though, to build a
practical motorhome which could go at least 300 miles? And, I don't
know what "dry" weight means. But, "practical" means it needs to hold
two people, some interior comforts - kitchenette, table, bench, bunk,
toilet, food, gear for outings, and maybe a few extras like bicycles.
Unless you only want your motorhome to go to a nearby fishing spot or
something like that, I think 100 mile range is a nonstarter.
Speaking of a 4 passenger vehicle with 400-700 mile range, I wonder how
Lee is doing with the Sunrise.
Peri
------ Original Message ------
From: "Lawrence Rhodes via EV" <[email protected]>
To: "[email protected]" <[email protected]>; "[email protected]"
<[email protected]>
Sent: 21-Apr-16 11:38:32 AM
Subject: [EVDL] Otmar & Wayland. EV geniuses but misguided. Efficency
not more batteries might be another way.
I've changed my mind about such projects as John Waylands Insight &
Otmars stretch. I've been heavily influenced by the World Solar
Challenge and The Tesla Cruiser Class specifically. Efficiency is key.
Why carry around all that weight when a sub 1000 pound 4 passenger
vehicle with 400 to 700 mile range can be engineered. A 15 kw pack and
1.5kw solar array will take you very far and if you don't go much more
than 200 miles a day no need to plug in...unless you want to give back
to the grid. You will also get 1hour charging time with a 14.4 charger
which is the upper limit of level 2 charging. So the key is Monocoque
construction so using old steel cars is maybe not efficient enough. A
project that both John Wayland and Otmar might be interested in is
finding an old Ultravan. This is a 22 foot motor home that weighed
3000 pounds dry. These were produced in the 60's and 70's by aircraft
engineers. So at 3000 pounds this is less than the weight of a Nissan
Leaf...These can be found for far less than a Tesla. So you could have
a roomy vehicle arguably more roomy than Otmar's stretch Tesla/Vanogon
idea and far less costly as a wrecked Leaf is almost zero in cost. So
you could put together a 60-100 mile range motor home with a 3.5kw
solar array that would charge fully in 10 hours and up to 95% in 45
minutes. Yes not as convenient as the Tesla but I bet Otmar could use
the 3.3kw charger from a 2012 Leaf to use with the solar array and go
to his charger friends for some extremely fast charging solutions. But
with the Chademo why bother. I hope I've given John and Otmar some
ideas and EVeryone else. Efficiency. Not brute battery weight.
http://sinovoltaics.com/technology/stella-lux-winner-of-world-solar-challenge-visits-shanghai/
http://www.corvair.org/chapters/ultravan/used.html the 1500 dollar
gutted Ultravan looks promising.
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