From: "David COOK hoursaway1@comcast.net" Received: from pmg.Logan.com ([207.170.160.161] verified) by logan.com (CommuniGate Pro SMTP 6.4.0) with ESMTPS id 4135006 for flyrotary@lancaironline.net; Tue, 22 Jul 2025 12:14:23 -0400 Received: from pmg.Logan.com (localhost [127.0.0.1]) by pmg.Logan.com (Proxmox) with ESMTP id 3F5D623837 for ; Tue, 22 Jul 2025 12:14:23 -0400 (EDT) Received-SPF: pass (comcast.net: 96.103.146.58 is authorized to use 'hoursaway1@comcast.net' in 'mfrom' identity (mechanism 'ip4:96.103.146.48/28' matched)) receiver=pmg.Logan.com; identity=mailfrom; envelope-from="hoursaway1@comcast.net"; helo=resqmta-a2p-658785.sys.comcast.net; client-ip=96.103.146.58 Received: from resqmta-a2p-658785.sys.comcast.net (resqmta-a2p-658785.sys.comcast.net [96.103.146.58]) by pmg.Logan.com (Proxmox) with ESMTPS for ; Tue, 22 Jul 2025 12:14:20 -0400 (EDT) Received: from resomta-a2p-647655.sys.comcast.net ([96.103.145.235]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 256/256 bits) (Client did not present a certificate) by resqmta-a2p-658785.sys.comcast.net with ESMTPS id eEBIu5me4TNwPeFd8uSDxr; Tue, 22 Jul 2025 16:14:14 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=20190202a; t=1753200854; bh=nznuUUGQ78sx4q5s9TGX10yb1HRGIJGqQrdR8UViuUQ=; h=Received:Received:Date:From:To:Message-ID:Subject:MIME-Version: Content-Type:Xfinity-Spam-Result; b=6Pb5/LP851je0ER27P8x8IWGeOky8/oyLivNnfYlVEriyPt75g6TdpwsFx0ZsFLto YnodYweiv5iPzqxwc/zEqLoGEUzi6C+OTVu2JjXrSOioASN8gcHd+8Y5x0cDpPZlPE dps5wk6YMh6kcsNB8HVzYg5OcxLMZIYqyjMq08dhhjVKmYv6CCAv/FOhjqvFJgFtvg aWlDUTQRm1n+NVCLwxK/XiO9PLwq8tDs+FUmluCP0AZcMSEn+fbN2B16WdUx78gPbj i1rxlyDjBsPhgKZUXslZi7bQreR4T+qpr9nbsp7bjvMapOQoNHlTDA/+EcTu1HCzHf E3V5F0IwR1VGw== Received: from oxapp-ch2g-56o.email.comcast.net ([96.118.128.240]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 256/256 bits) (Client did not present a certificate) by resomta-a2p-647655.sys.comcast.net with ESMTPS id eFd7uJ0onMFYTeFd7uSPm8; Tue, 22 Jul 2025 16:14:13 +0000 Date: Tue, 22 Jul 2025 12:14:13 -0400 (EDT) To: Rotary motors in aircraft Message-ID: <87838006.274911.1753200853445@connect.xfinity.com> In-Reply-To: References: Subject: Re: [FlyRotary] RD-1C Oil Leak and Ring Gear Retainer O-Ring MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Priority: 3 Importance: Normal X-Mailer: Open-Xchange Mailer v7.10.6-Rev59 X-Originating-IP: 2601:405:4980:5fe0:5802:9e55:b3:c49e X-Originating-Client: open-xchange-appsuite X-CMAE-Envelope: MS4xfJlykWdesbeuE64oju9rKsUhHT5oVqE+K5T2zRsvDbW6HCdVQFwTYwo0bPFZ5XRw5It5sKJbjU7VqTQcZHQ5IRMxyGWASQBGKL2m6l//VNL+ax6c0EDU nvlR5hyuBvhIoiAwdhvmC3fIAjFmHgw+GHdmPXL0Qk85MNKFDBEp+RFd6ly0Z4N5vJa0++SfP+dlFnlVVMgWNLFPauU7JXO0K28SUHmohiqnkN73riVksxbS X-SPAM-LEVEL: Spam detection results: 0 AWL -0.007 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DKIM_SIGNED 0.1 Message has a DKIM or DK signature, not necessarily valid DKIM_VALID -0.1 Message has at least one valid DKIM or DK signature DKIM_VALID_AU -0.1 Message has a valid DKIM or DK signature from author's domain DKIM_VALID_EF -0.1 Message has a valid DKIM or DK signature from envelope-from domain DMARC_PASS -0.1 DMARC pass policy FREEMAIL_ENVFROM_END_DIGIT 0.25 Envelope-from freemail username ends in digit FREEMAIL_FROM 0.001 Sender email is commonly abused enduser mail provider KAM_MXURI 1.5 URI begins with a mail exchange prefix, i.e. mx.[...] SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record WEIRD_PORT 0.001 Uses non-standard port number for HTTP Make certain the o-ring is compatible with the chemicals in auto fuel that is added to make the ethanol stable. Those chems will make their way into the oil in small amounts but over time it will balloon the wrong seals. Fuel sys. o-rings also obviously. David Cook RV6A Rotary (need to reseal L. fuel tank, contaminated fuel destroyed sealant) > On 07/22/2025 7:31 AM EDT Jeff Whaley jwhaley@datacast.com wrote: > > > I have an oil leak at my RD-1C redrive. > Took the drive off and noticed the large O-Ring was bulged out in one area between two mounting bolts. > The RD-1C Manual/Parts List specs the O-Ring as 5.125" O.D. x .190" thick. > Has anyone ever replaced this before and/or have a known source of where to obtain? > Thanks for any feedback. > Jeff Whaley > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html