X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 19 Sep 2011 07:43:33 -0400 Message-ID: X-Original-Return-Path: Received: from smtp1.av-mx.com ([137.118.16.57] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTP id 5128607 for lml@lancaironline.net; Sun, 18 Sep 2011 15:33:15 -0400 Received-SPF: pass receiver=logan.com; client-ip=137.118.16.57; envelope-from=pinetownd@volcano.net Received: from DennisPC (unknown [65.170.223.104]) (Authenticated sender: pinetownd@volcano.net) by smtp1.av-mx.com (Postfix) with ESMTP id B4265291AF1 for ; Sun, 18 Sep 2011 15:32:38 -0400 (EDT) X-Original-Message-ID: <6F5CC8B877C04A7D99C327A41C595AA8@DennisPC> From: "Dennis Johnson" X-Original-To: "Lancair Mailing List" References: In-Reply-To: Subject: Re: [LML] vac pump alternator repalcement X-Original-Date: Sun, 18 Sep 2011 12:32:39 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_05A0_01CC75FF.0DA81010" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_05A0_01CC75FF.0DA81010 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I'm happy with B&C's 8 amp permanent magnet alternator as backup in case = my main alternator fails: http://www.bandc.biz/alternator8ampshomebuilt.aspx It's relatively cheap, light, and easily fits on the back of my IO-550 = vacuum pump mount without need for modifying the firewall. It doesn't = put out much current, but if I shut off non-essential equipment, I can = fly a long time on this, supplemented with my airplane's battery. On an = IO-550, you can get close to 10 amps from it if you run engine RPM up to = 2700 enroute to your destination. It will be less on a Lycoming, = because the alternator's RPM is less. It will probably self-energize even without your airplane's battery = connected (such as if the main battery cable becomes disconnected). A = simple modification, described on Bob Nuckolls' web site, shows how to = be assured that it will self-energize. Dennis Legacy, 440 tach hours. Needed to use my backup alternator once, on a = trip to Las Vegas. =20 ------=_NextPart_000_05A0_01CC75FF.0DA81010 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I'm happy with B&C's 8 amp permanent magnet = alternator=20 as backup in case my main alternator fails:

http://www.ba= ndc.biz/alternator8ampshomebuilt.aspx

It's relatively cheap, light, and easily fits on = the back=20 of my IO-550 vacuum pump mount without need for modifying the = firewall. It=20 doesn't put out much current, but if I shut off non-essential equipment, = I can=20 fly a long time on this, supplemented with my airplane's=20 battery. On an IO-550, you can get close to 10 amps from it if you = run=20 engine RPM up to 2700 enroute to your destination. It will be = less on=20 a Lycoming, because the alternator's RPM is less.

It will probably self-energize even without your = airplane's battery connected (such as if the main battery cable becomes=20 disconnected). A simple modification, described on Bob Nuckolls' = web site,=20 shows how to be assured that it will self-energize.

Dennis

Legacy, 440 tach hours. Needed to use my = backup=20 alternator once, on a trip to Las Vegas.

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