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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-1225250@logan.com>
Subject: Re: [FlyRotary] Nothing to do with Rotary Engines, but....
Date: Wed, 5 Jul 2006 20:36:29 -0400
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Bill, I Certainly would be interested in a 3 lb 500 amp crank - depending on 
price.   I started out with 44 lbs of batteries in my aircraft back in 1998 
and am now down to 14.5 lbs.  I am told that you can get 3 fpm more rate of 
climb for each 1 lbs less weight, so that could  give me 11.5*3 =  34.5 fpm 
increase.   Of course, I could go on a diet and get twice that for no cost 
{:>)

Very impressive battery technology - so what are possible down sides (other 
than perhaps price)?

In fact, with that kind of battery power, an electric motor "supercharger" 
producing 1 - 3 psi of boost just might be possible (for a short duration - 
say enough to give you an additional 15 HP on take off for 3 minutes.

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.killacycle.com/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'
>
> --
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