X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 16 Dec 2009 11:06:35 -0500 Message-ID: X-Original-Return-Path: Received: from imr-da06.mx.aol.com ([205.188.169.203] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 4023680 for lml@lancaironline.net; Wed, 16 Dec 2009 10:31:33 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.169.203; envelope-from=MikeEasley@aol.com Received: from imo-da04.mx.aol.com (imo-da04.mx.aol.com [205.188.169.202]) by imr-da06.mx.aol.com (8.14.1/8.14.1) with ESMTP id nBGFUoe5032022 for ; Wed, 16 Dec 2009 10:30:50 -0500 Received: from MikeEasley@aol.com by imo-da04.mx.aol.com (mail_out_v42.5.) id q.bfe.730637b9 (37228) for ; Wed, 16 Dec 2009 10:30:49 -0500 (EST) Received: from MikeNotebook (c-75-71-55-189.hsd1.co.comcast.net [75.71.55.189]) by cia-ma06.mx.aol.com (v127.6) with ESMTP id MAILCIAMA065-916c4b28fd272ec; Wed, 16 Dec 2009 10:30:48 -0500 X-Original-Date: Wed, 16 Dec 2009 08:30:40 -0700 From: mikeeasley Subject: Re: [LML] Re: Oil Pressure Sender Installation (was Legacy Crash Watsonville?) X-Original-To: "Lancair Mailing List" In-Reply-To: X-Original-Message-ID: <463722b4.889b.43a1.976e.f3913303908b@aol.com> References: X-Mailer: Nexus Desktop Client 3.1.20.1 MIME-Version: 1.0 Content-Type: MULTIPART/alternative; BOUNDARY=4cd4f7d0-c9d0-4764-b3d3-fa65cf1c8f19 Content-Transfer-Encoding: 8bit X-AOL-IP: 75.71.55.189 X-Spam-Flag:NO X-AOL-SENDER: MikeEasley@aol.com --4cd4f7d0-c9d0-4764-b3d3-fa65cf1c8f19 Content-Type: TEXT/plain; charset=us-ascii Robert, If there is a "correct" way to install the oil pressure sender, you're supposed to use a restrictor fitting on the engine, a firesleeved hose to a firewall mounted sensor. Oil pressure senders can leak, so using a restrictor fitting is key. Better to have a drip instead of a huge leak. Mounting the sender away from engine vibration will significantly increase its lifespan. I have a JPI EDM 900 engine monitor and the instructions specifically say "DO NOT MOUNT SENSOR DIRECTLY TO ENGINE" but there's no mention of a restrictor fitting. They specify an Adel clamp around the sensor attached to the firewall. Vans sells a 45 degree steel elbow restrictor fitting for about $20. Wicks has an inline brass restrictor fitting for about $6. I think a restrictor fitting is a good idea on the fuel pressure sender hose fitting too. Mike In a message dated 12/16/09 08:04:56 Mountain Standard Time, lancair-esp@ustek.com writes: From: mikeeasley [mailto:mikeeasley@aol.com] Sent: Tuesday, December 15, 2009 8:41 AM To: lml@lancaironline.net Subject: Re: [LML] Re: Legacy Crash Watsonville? I can't think on anything worse than an engine fire and it's important to discuss what to do when you have to deal with an in-flight fire. When the DAR signed off my GlaStar he pointed to the oil pressure sensor mounted directly to the engine, saying that it was not illegal but . . . the year previous a similar cantilevered positioning resulted in a fatigue failure, the oil spewed out, and when attempting to land the pilot flew into power lines. So maybe perhaps I might want to consider a change. And yeah, I did not move the plane until that was repositioned. Robert M. Simon ES-P N301ES --4cd4f7d0-c9d0-4764-b3d3-fa65cf1c8f19 Content-Type: TEXT/html; charset=utf-8 Content-Transfer-Encoding: 8BIT

Robert,

If there is a "correct" way to install the oil pressure sender, you're supposed to use a restrictor fitting on the engine, a firesleeved hose to a firewall mounted sensor. Oil pressure senders can leak, so using a restrictor fitting is key. Better to have a drip instead of a huge leak. Mounting the sender away from engine vibration will significantly increase its lifespan.

I have a JPI EDM 900 engine monitor and the instructions specifically say "DO NOT MOUNT SENSOR DIRECTLY TO ENGINE" but there's no mention of a restrictor fitting. They specify an Adel clamp around the sensor attached to the firewall.

Vans sells a 45 degree steel elbow restrictor fitting for about $20. Wicks has an inline brass restrictor fitting for about $6. I think a restrictor fitting is a good idea on the fuel pressure sender hose fitting too.

Mike

In a message dated 12/16/09 08:04:56 Mountain Standard Time, lancair-esp@ustek.com writes:

From: mikeeasley [mailto:mikeeasley@aol.com]
Sent: Tuesday, December 15, 2009 8:41 AM
To: lml@lancaironline.net
Subject: Re: [LML] Re: Legacy Crash Watsonville?

I can't think on anything worse than an engine fire and it's important to discuss what to do when you have to deal with an in-flight fire.

When the DAR signed off my GlaStar he pointed to the oil pressure sensor mounted directly to the engine, saying that it was not illegal but . . . the year previous a similar cantilevered positioning resulted in a fatigue failure, the oil spewed out, and when attempting to land the pilot flew into power lines. So maybe perhaps I might want to consider a change. And yeah, I did not move the plane until that was repositioned.

Robert M. Simon

ES-P N301ES

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