Message-ID: <39894C70.133B@erols.com>
Date: Thu, 03 Aug 2000 06:41:53 -0400
From: BILL and SUE <harrelson@erols.com>
Reply-To: harrelson@erols.com
Reply-To: lancair.list@olsusa.com
To: lancair.list@olsusa.com
Subject: Enough with Diodes
References: <20000803041204.AAA22269@ns1.olsusa.com>
Mime-Version: 1.0

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> > How about eliminating the diode in favor of a switch?
Now you're gettin somewhere Bill. 

I put two identical B&C 12AH batteries in mine. Each has its own
contactor to connect to its respective bus (Bat A powers main bus, Bat B
powers essential bus). A third contactor (big master relay) acts as a
bus tie so that in normal operations both batteries power both busses,
both batteries start the engine and both batteries are charged by the
alternator. When the low voltage annunciator lights up, a flip of a
switch unpowers the bus tie contactor thereby seperating the system into
two completely seperate bus/battery systems. The essential bus/B battery
system now has absoutely no connection to the alternator anymore. A 10
or 12 AH battery is a lot of weight to haul around for use only in an
emergency. This system makes it earn its keep while waiting for the
emergency. As per Bob Nuckols suggestion, I plan to replace one of the
batteries each annual. No diodes, no problems. Waddayatink?

Bill Harrelson
N5ZQ
harrelson@erols.com
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