X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 05 Dec 2005 10:14:32 -0500 Message-ID: X-Original-Return-Path: Received: from mta10.adelphia.net ([68.168.78.202] verified) by logan.com (CommuniGate Pro SMTP 5.0.3) with ESMTP id 863721 for lml@lancaironline.net; Mon, 05 Dec 2005 09:02:34 -0500 Received-SPF: pass receiver=logan.com; client-ip=68.168.78.202; envelope-from=glcasey@adelphia.net Received: from [70.34.70.106] by mta10.adelphia.net (InterMail vM.6.01.05.02 201-2131-123-102-20050715) with ESMTP id <20051205140146.YBMN1186.mta10.adelphia.net@[70.34.70.106]> for ; Mon, 5 Dec 2005 09:01:46 -0500 Mime-Version: 1.0 (Apple Message framework v733) In-Reply-To: References: Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed X-Original-Message-Id: <5DDC166C-6C22-4535-980D-86746AB50BAB@adelphia.net> Content-Transfer-Encoding: 7bit From: Gary Casey Subject: Engine fluid fittings X-Original-Date: Mon, 5 Dec 2005 06:01:43 -0800 X-Original-To: "Lancair Mailing List" X-Mailer: Apple Mail (2.733) We use brass for sensor housings installed in high-vibration environments, including turbocharger housings. There has never been an issue with fatigue failures from vibration - I wouldn't worry about it, especially for a crankcase vent fitting. The worst that could happen is you end up with a mess if it breaks. For this application I would use an aluminum fitting because of the weight issue. For pressurized applications I understand that only steel fittings are "approved" where vibration is an issue, essentially wherever a hose is connected to the engine, regardless of which end. Gary Casey > While building my plane I was instructed by an A&P to never use > brass fittings on the engine, as they will crystallize over time > and could eventually break. Can anyone verify this information? > > Gary Edwards > LNC2 N21SN > Medford, Oregon >