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Yep, hard to beat old dinosaur juice for energy density. But put me
down for a "Yes" on wanting one of those A/C batteries. The starting
current is fine but I'd like to keep about 20 amp-hours on board for alternator
failure situations. What is the AH range you anticipate doing?
Tracy
----- Original Message -----
Sent: Thursday, July 06, 2006 1:23
AM
Subject: [FlyRotary] Re: Nothing to do
with Rotary Engines, but....
At the moment, about the best that commercial Li-Ion
rechargeable
cells can do is about 200+ W-hr/kg.
In more familiar
units, this translates to about 1/2 HP for an hour
for each pound of
batteries carried. Basically, the weight in pounds
will be twice the HP
times the number of hours that you want.
Good for a motor-glider, but
that is about it.
Bill Dube'
At 07:45 PM 7/5/2006, you
wrote:
>Really was something to see that Bike burn
out...
>
>Or may even to skew Bob's comment some, How about 175hp
for 20 minutes, then
>125hp for 4 hours, with a 30 minute 175hp
reserve.
>
>Tony Snow (Bearhawk #753)
>
>-----Original
Message-----
>From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net]On
>Behalf Of Bob White
>Sent:
Wednesday, July 05, 2006 9:01 PM
>To: Rotary motors in
aircraft
>Subject: [FlyRotary] Re: Nothing to do with Rotary Engines,
but....
>
>
>Very impressive indeed. Another one or
two orders of magnitude
>improvement and we can forget the rotary and
just put an electric motor
>up front (or out back if you're so
inclined). Now that would be
>simple, reliable, and quiet too
boot. How about it Bill? Can you give
>me 175 HP for 4-5
hours in 200 lbs or so? (Damn the cost, that would
>be worth
taking out a new mortgage on the house.) ;)
>
>Bob
W.
>
>
>On Wed, 5 Jul 2006 20:36:29 -0400
>"Ed
Anderson" <eanderson@carolina.rr.com>
wrote:
>
><snip>
> >
> > Very impressed
with your electric drag bike endeavors - got to be almost
>as
>
> good as flying a rotary {:>)
> >
> > Ed
>
>
> > Ed Anderson
> > Rv-6A N494BW Rotary Powered
>
> Matthews, NC
> > eanderson@carolina.rr.com
>
> http://members.cox.net/rogersda/rotary/configs.htm#N494BW
>
> ----- Original Message -----
> > From: "Bill Dube" <William.P.Dube@noaa.gov>
>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
>
> Sent: Wednesday, July 05, 2006 7:50 PM
> > Subject: [FlyRotary]
Nothing to do with Rotary Engines, but....
> >
> >
>
> > This has absolutely nothing to do with rotary engines, but I thought
I'd
> > > show you what has been distracting me from my airplane
construction as
>of
> > > late.
> > >
>
> > For those of you that don't already know, my other hobby is drag
racing
>an
> > > electric motorcycle. (It takes a team of
people to do this, not just
>me.)
> > > We recently managed
to get sponsorship from A123 Systems. These
>batteries
> > >
are like "Mr. Fusion" in the movie "Back to the Future." Enormous
power
> > > and a bottomless pit of energy. The more I work with
these batteries,
>the
> > > more impressed I become.
>
> >
> > > Here is a clip of the bike doing
a burn-out:
> > >
> > > http://www.killacycle.com/Burnout.wmv
>
> >
> > > Here is a clip of the bike
turning parts of the rear motor into
>molten
> > >
copper as it goes down the strip:
> > >
> > > http://www.killacyclecom/Second%20Run.wmv
>
> >
> > > We can do six burn-outs
and six runs without recharging if we cared
> > > to. Maybe
seven.
> > >
> > > The 170 battery
pack puts out over 350 HP. The battery pack is 376
> > > volts,
1350 amps, and has 18.4 A-hrs. We charge up in about 15 minutes
> >
> after every run.
> > >
> > > I
plan to start building airplane batteries with them soon, by
the
>way.
> > > It will be late Winter, probably. A123
Systems batteries are ideal for
> > > aircraft. They are
lightweight, powerful, robust, long cycle life, and
> > > very,
very safe. I'm pretty sure I can build a battery that will
crank
>500
> > > amps, but will weigh less than 3
lbs.
> > >
> > > I guess it had
something to do with airplanes.... :-)
> > >
> > >
Bill Dube'
> > >
> > > --
> > >
Homepage: http://www.flyrotary.com/
> >
> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
>
> >
> >
> >
> >
> > --
> >
Homepage: http://www.flyrotary.com/
> >
Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
>
>
>--
>http://www.bob-white.com
>N93BD
- Rotary Powered BD-4 (first engine start 1/7/06)
>Custom Cables for
your rotary installation
-
>http://www.roblinphoto.com/shop/
>
>--
>Homepage:
http://www.flyrotary.com/
>Archive
and UnSub: http://mail.lancaironline.net/lists/flyrotary/
>
>
>
>--
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