X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-kukur.atl.sa.earthlink.net ([209.86.89.65] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1128859 for flyrotary@lancaironline.net; Fri, 26 May 2006 08:34:27 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.65; envelope-from=Dastaten@earthlink.net Received: from user-0cetj34.cable.mindspring.com ([24.238.204.100] helo=[127.0.0.1]) by elasmtp-kukur.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1FjbVd-00006e-Va for flyrotary@lancaironline.net; Fri, 26 May 2006 08:33:42 -0400 Message-ID: <4476F55A.8070702@earthlink.net> Date: Fri, 26 May 2006 07:32:26 -0500 From: David Staten User-Agent: Mozilla Thunderbird 1.0.7 (Windows/20050923) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Wire tying oil filters References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-ELNK-Trace: 9a30bff84e6cb88f95c85d38d22416599ef193a6bfc3dd48fe12f787293de716a3416f52e8ba1b21350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 24.238.204.100 Bill Bradburry wrote: >While looking at the K&N filters on Summit I noticed that they have: >Filter Bypass Relief Valve: Yes >Relief Valve Open (psi): 8-11 psi >Does this mean that the filter is bypassed when the oil pressure goes >over 8-11 psi? If so, that would be the same as no filter in the >rotary???? > >Bill Bradburry > > Not so fast there.. The relief valve is a relative thing. When the change in pressure across the filter exceeds the stated value, then the relief valve function is actuated. Simply pumping it in at 100 or so PSI is not the key to the issue.. having the filter clogged enough such that the pressure drop across the element gets too great IS the key to the issue. Dave