X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 17 Dec 2005 00:43:59 -0500 Message-ID: X-Original-Return-Path: Received: from mta7.srv.hcvlny.cv.net ([167.206.4.202] verified) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 884875 for lml@lancaironline.net; Fri, 16 Dec 2005 11:38:54 -0500 Received-SPF: none receiver=logan.com; client-ip=167.206.4.202; envelope-from=Adam@ValidationPartners.com Received: from VpiWorkstation1 (ool-45704ccc.dyn.optonline.net [69.112.76.204]) by mta7.srv.hcvlny.cv.net (Sun Java System Messaging Server 6.2-4.03 (built Sep 22 2005)) with ESMTP id <0IRL00M92NIYJCBE@mta7.srv.hcvlny.cv.net> for lml@lancaironline.net; Fri, 16 Dec 2005 11:37:49 -0500 (EST) X-Original-Date: Fri, 16 Dec 2005 11:37:47 -0500 From: Adam Molny Subject: IO-550N Front-mounted alternator X-Original-To: Mail List Lancair X-Original-Message-id: <0IRL00M94NIYJCBE@mta7.srv.hcvlny.cv.net> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Content-type: multipart/alternative; boundary="Boundary_(ID_u7HWQI+Lj11d3MhMz4OP6g)" Thread-index: AcYCXwvsG9qswi6nRfyRbxOdZAn0Qg== This is a multi-part message in MIME format. --Boundary_(ID_u7HWQI+Lj11d3MhMz4OP6g) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT I would like to have a full size secondary alternator in my all-electric Legacy. This way I won't have to shed electrical loads if the primary alternator fails. I have been researching a pulley-driven alternator off the prop flange, and have found a few tantalizing clues. The IOF240-B4 has a belt-driven alternator with a pulley that bolts to the prop flange. That pulley will fit our engines. The alternator mount brackets from the IO240 probably wouldn't be any help because our crankcase is different. Fabricating brackets from scratch to fit my engine is a possibility. The most intriguing option is the IO550P4. TCM's accessory listing for this engine has an entry "AUX ALTERNATOR WITH FRONT MOUNT PROVISION". Is anyone familiar with this option? I asked TCM, and they are scratching their heads as to what it means. BTW, I also considered at using the rear-mounted air conditioner compressor bracket, but looks like the Legacy doesn't have enough room between the engine and firewall for the pulleys. I am aware of the B&C 20amp alternator, and will keep that as a fallback if I can't make this idea work. Thanks, Adam Molny Legacy #151 --Boundary_(ID_u7HWQI+Lj11d3MhMz4OP6g) Content-type: text/html; charset=us-ascii Content-transfer-encoding: 7BIT

I would like to have a full size secondary alternator in my all-electric Legacy. This way I won’t have to shed electrical loads if the primary alternator fails. I have been researching a pulley-driven alternator off the prop flange, and have found a few tantalizing clues.

The IOF240-B4 has a belt-driven alternator with a pulley that bolts to the prop flange. That pulley will fit our engines. The alternator mount brackets from the IO240 probably wouldn’t be any help because our crankcase is different. Fabricating brackets from scratch to fit my engine is a possibility.

The most intriguing option is the IO550P4. TCM’s accessory listing for this engine has an entry “AUX ALTERNATOR WITH FRONT MOUNT PROVISION”. Is anyone familiar with this option? I asked TCM, and they are scratching their heads as to what it means.

BTW, I also considered at using the rear-mounted air conditioner compressor bracket, but looks like the Legacy doesn’t have enough room between the engine and firewall for the pulleys.

I am aware of the B&C 20amp alternator, and will keep that as a fallback if I can’t make this idea work.

Thanks,

Adam Molny

Legacy #151

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