Mailing List flyrotary@lancaironline.net Message #17315
From: David Carter <dcarter@datarecall.net>
Subject: Re: [FlyRotary] Re: Battery voltage (was: Racetech RV6A Forced Landing)
Date: Wed, 16 Feb 2005 13:31:43 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Here's the entire e-mail from Bill for those who may not have saved it or
seen it.

David
- - - - - - - - - - - - - - - - - - - - - -
--> RV-List message posted by: Bill Dube <bdube@boulder.nist.gov>

At 09:58 AM 3/3/2003, you wrote:
--> RV-List message posted by: "James E. Clark" <jclark@conterra.com>

        The SVR batteries I mentioned on the list awhile back are superior
to both the Odyssey and the Panasonic batteries in cranking ability.

http://www.svrbatteries.com/download.html#

Model     Cold Cranking Amps   Amp-hrs    weight (lbs) Max amps
SVR-14     250 CCA                  14              11.5          850
SVR-20     300 CCA                   18              15
SVR-18     350 CCA                   22               17

PC-680      280 CCA                  16                14          680

        Electric drag racers, like myself, search for batteries that will
put out THE most power per pound. The SVR-14 will put out more than 850
amps without sagging below 7 volts. The Battle Bot competitors use this
brand of battery too. You can get them at a very reasonable price from
<evparts.com>. They are cheaper, from this source, than the PC-680.

        The CCA test is based on delivering the CCA at zero F for 30
seconds without sagging below 7.2 volts. In reality, a healthy engine takes
less than 5 seconds to start, even in cold weather. If you think about it,
the "pulse" amps are more important than the CCA because if you can deliver
higher voltage in the beginning, you don't need to crank the engine for
very long. With a given starter amperage load, the SVR-14 is going to
deliver more voltage, will thus spin the starter faster and start it
quicker than the PC-680.

        If anyone in the Denver area would like to try out an SVR-14, I'd
be happy to lend them one for a comparison test, as long as I get it back.


 _   /|                Bill "Wisenheimer" Dube'
  \'o.O'               <billdube@KillaCycle.com>
=(___)       U                     Check out the bike ->
http://www.KillaCycle.com







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