[GRLUG] OFF TOPIC Electric Car
Adam Tauno Williams
awilliam at whitemice.org
Wed Nov 19 12:33:12 EST 2008
On Wed, 2008-11-19 at 10:56 -0500, Casey DuBois wrote:
> I have dreamed of taking a car with a blown engine and building an
> electric car for a couple years.
> While talking with MM it seems that others share my dream.
> Who else in the GRLUG has interest or expertise to add?
I suspect acquiring the electric motor(s) required to accelerate a full
size car would be the expensive part; I've heard of people using
forklift motors <http://www.mrsharkey.com/rabbit.htm>
<http://www.diyelectriccar.com/forums/showthread.php?t=7598&highlight=forklift>. [I work for a forklift dealership] If the motor isn't DC then your going to need a monster of a power-inverter, which might cost more than the motor. But with DC you've got no regeneration and while you can 'over-clock' them for short burst they are also less efficient overall than something like a three-phase AC motor.
And your going to need a fully-equipped machine shop in order to
retrofit them onto the transmission.
I think it is actually more interesting to consider building a home-brew
hybrid; have a small diesel engine running at a constant RPM turning a
generator. Much like the concept of a diesel-electric locomotive.
You'd probably still get a significant increase in fuel economy as an
engine at a constant RPM is more efficient than one that idles and revs.
Plus you could always go short distances on just the batter.
> Does anyone know of any local groups that may be into electric cars?
I'm not aware of any.
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