Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.93.67.84] verified) by logan.com (CommuniGate Pro SMTP 4.1b7) with ESMTP id 2404022 for flyrotary@lancaironline.net; Thu, 05 Jun 2003 14:59:27 -0400 Received: from nc.rr.com (cpe-024-211-186-067.nc.rr.com [24.211.186.67]) by ms-smtp-03.southeast.rr.com (8.12.5/8.12.2) with ESMTP id h55IvnMF016534 for ; Thu, 5 Jun 2003 14:57:50 -0400 (EDT) Message-ID: <3EDF9056.7050200@nc.rr.com> Date: Thu, 05 Jun 2003 14:47:50 -0400 From: Ernest Christley User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.1) Gecko/20020826 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: air filters? References: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Marko Bewersdorff wrote: > So keep those filters from collapsing. > I was concerned about this, so I built a vacuum relief valve, > which is an integral part of my filter box. In the unlikely > event of a filter plug due to dirt or more likely ice, it will > simply overcome the spring pressure and allow unfiltered air > from inside the cowl to flow. I probably won't even know if it > has opened. > > Todd, rig a micro switch to light a LED on the panel when the spring opens. That'll be a good indication of when the filter needs cleaning. If the filter never clogs, that will indicate that a filter is nothing more than an unecessary airflow restriction (no clog == no dirt == why have a filter?) -- ----Because I can---- http://www.ernest.isa-geek.org/ ------------------------