X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 08 Oct 2007 17:17:53 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m23.mx.aol.com ([64.12.137.4] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTP id 2375808 for lml@lancaironline.net; Mon, 08 Oct 2007 15:00:45 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.4; envelope-from=PTACKABURY@aol.com Received: from PTACKABURY@aol.com by imo-m23.mx.aol.com (mail_out_v38_r9.3.) id q.c89.1631313e (48624); Mon, 8 Oct 2007 15:00:03 -0400 (EDT) From: PTACKABURY@aol.com X-Original-Message-ID: X-Original-Date: Mon, 8 Oct 2007 15:00:03 EDT Subject: Re: [LML] Re: Magneto Idler Cover X-Original-To: lml@lancaironline.net X-Original-CC: klaus@lightspeedengineering.com, Ron@performanceengines.com MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1191870003" X-Mailer: AOL 9.0 VR sub 165 X-Spam-Flag: NO -------------------------------1191870003 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Regards the Mag idler: I had to deal with this problem when I installed dual LSE systems on my TSIO-550 powered LIV. Ron Monson was building up the motor and suggested making a custom part to replace the mag gear if I wanted to install a second alternator on the aft side of the pad--or I could install the bottom half of an old mag as a "place holder". I was aware of a few incidences of stray accessory idlers when mags were removed without removing or securing the idler gear, mostly on Lycs, causing premature engine overhaul so this was a challenge requiring some thought. Since mine was one of the first dual LSE installs on 6 cyl Continentals (plasma IIIs which use a crank sensor) we were breaking some new ground. Ron has done many in the several years since so you might give him a call to see what he would recommend. I just removed both mags and all mag accessory gears during engine buildup and did not install a second alt so there are many fewer teeth to make metal if something goes astray. Two Odyssey batteries and a certified alt seemed sufficient and have worked well for the past 140 hours. I know parallel busses each with an alt and battery for electrically dependent engines are the default design, but I think three power providers each separable from the main buss eliminate some complexity and offer great redundancy, especially when coupled with a good over voltage protector, current limiter and load meter. For an even simpler power distribution system you could follow the LSE dual installation manual and use a small back up battery with a Schottky Diode to eliminate the extra alt and solve the idler gear problem. Choices, choices--your decisions may differ. regards, paul--N94PT ************************************** See what's new at http://www.aol.com -------------------------------1191870003 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Regards the Mag idler: I had to deal with this problem when I=20 installed dual LSE systems on my TSIO-550 powered LIV. Ron Monson was=20 building up the motor and suggested making a custom part to replace the mag=20= gear=20 if I wanted to install a second alternator on the aft side of the pad--= or I=20 could install the bottom half of an old mag as a "place holder".&n= bsp;=20 I was aware of a few incidences of stray accessory idlers when mags were rem= oved=20 without removing or securing the idler gear, mostly on Lycs, causing prematu= re=20 engine overhaul so this was a challenge requiring some thought. Since=20= mine=20 was one of the first dual LSE installs on 6 cyl Continentals (plasma IIIs wh= ich=20 use a crank sensor) we were breaking some new ground. Ron has done man= y in=20 the several years since so you might give him a call to see what he would=20 recommend. I just removed both mags and all mag accessory gears during= =20 engine buildup and did not install a second alt so there are many fewer teet= h to=20 make metal if something goes astray. Two Odyssey batteries and a certi= fied=20 alt seemed sufficient and have worked well for the past 140 hours.

I know parallel busses each with an alt and battery for electrically=20 dependent engines are the default design, but I think three power providers=20= each=20 separable from the main buss eliminate some complexity and offer great=20 redundancy, especially when coupled with a good over voltage protector, curr= ent=20 limiter and load meter. For an even simpler power distributi= on=20 system you could follow the LSE dual installation manual and use=20 a small back up battery with a Schottky Diode to eliminate the ext= ra=20 alt and solve the idler gear problem. Choices, choices--your decisions= may=20 differ.

regards, paul--N94PT

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