Completely agree with this approach, with one addition: 3D modeling
software.
Design your vehicle and test it before you build it. EAA can help you
there as well.
Cheers!
Peter
On 2/14/15 12:00 AM, Cor van de Water via EV wrote:
My father has (a long time ago) built several custom windsurf boards
with that method of shaping a light foam "core" and then skinning it with
glassfiber or Kevlar embedded in thin epoxy layers. It is even user-repairable,
although never as beautiful as before.
Cor van de Water
Chief Scientist
Proxim Wireless
office +1 408 383 7626 Skype: cor_van_de_water
XoIP +31 87 784 1130 private: cvandewater.info
www.proxim.com
This email message (including any attachments) contains confidential and
proprietary information of Proxim Wireless Corporation. If you received this
message in error, please delete it and notify the sender. Any unauthorized
use, disclosure, distribution, or copying of any part of this message is
prohibited.
-----Original Message-----
From: EV [mailto:[email protected]] On Behalf Of Lee Hart via EV
Sent: Thursday, February 12, 2015 9:50 PM
To: Electric Vehicle Discussion List
Subject: Re: [EVDL] What is needed to build a successful & practical solar
vehicle.
EVDL Administrator via EV wrote:
This is a big assignment. We're talking about a 900lb 2-passenger (or
is it
4-passenger?) vehicle that reportedly runs on 55Wh/mi. That's about
2.5 to
3 times my ebike's energy use, but the Stella weighs in at 18 times
the bike's mass! It's also rolling on 4 wheels instead of 2. I know
a car is more aerodynamic than a bike, but that's going to require
some mighty skillful tweaking.
Here's how I would approach it:
First, you need to build it more like an airplane than a car. Join the other
EAA (the Experimental Aircraft Association), and learn how they build modern
high-performance airplanes.
For example, Burt Rutan is a genius at building high performance aircraft with techniques
that can easily be done by a hobbyist. He builds structures out of styrafoam, then
"skins" it with epoxy and cloth (fiberglass, carbon fiber, or kevlar, depending
the strength and flexibility needed in each area).
Second, look for a successful model, and copy it. It could be Stella, but it
depends on a lot of very expensive parts. The Swiss Twike is another
possibility, though it's also expensive. Axel Krause of Brusa with the
mini-Evergreen EV also comes to mind. An even older example is Bob McKee's
Sundancer EV.
Third, KISS (Keep It Simple Stupid). Follow the lead of people like Bob Rice,
Dave Cloud, and Jerry Dycus, and build your first prototype
*really* simple and basic, just to get the hang of it. Bolted angle iron, not
aircraft welded chrome-moly tubing. Plywood, not carbon fiber.
Get it to work first; then set about improving it.
--
We live in a society exquisitely dependent on science and technology, in which
hardly anyone knows anything about science and technology.
-- Carl Sagan
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, [email protected]
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
For EV drag racing discussion, please use NEDRA
(http://groups.yahoo.com/group/NEDRA)
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
For EV drag racing discussion, please use NEDRA
(http://groups.yahoo.com/group/NEDRA)
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
For EV drag racing discussion, please use NEDRA
(http://groups.yahoo.com/group/NEDRA)
