X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-oa0-f44.google.com ([209.85.219.44] verified) by logan.com (CommuniGate Pro SMTP 6.0.5) with ESMTPS id 6360975 for flyrotary@lancaironline.net; Thu, 04 Jul 2013 08:48:54 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.219.44; envelope-from=rwstracy@gmail.com Received: by mail-oa0-f44.google.com with SMTP id l10so1887485oag.31 for ; Thu, 04 Jul 2013 05:48:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:references:from:content-type:x-mailer:in-reply-to :message-id:date:to:content-transfer-encoding:mime-version; bh=LbGJ+mDMonKTrDvEtctDIy91CcnCXCGUKUdqfhA3cqc=; b=xx4p5DbhuhKoR03XNPsEeXtmc+cG+S+502+lYfFGTKIygc2WiCaarctAGLfvDqXTm3 /njmRyKbzCqVi9LAORdf7zsU7WjbbCAvD2EPHrt8okcpk5dC9ucLqgoajott0enokrHV nfS3TQ8XvREcuFluDdcZsPTDOVRootdL9sAz9obhNOr3+nYV6yjIIA3rgQiQil3b+6KT Px/JPKspDOisqP0iTuVwENyF5Z5eAzivAZMZLnl8c2/qKGFBTJ1qB+wYLCFz1nlOgXJ5 wR3DKUVGLmqpT8Xh9Q8ZciGl8c/moS285PzAjbaKjB1eGOQjqnjVvo/TzOkh+U6/94Q4 YuOg== X-Received: by 10.60.99.42 with SMTP id en10mr5841193oeb.85.1372942100192; Thu, 04 Jul 2013 05:48:20 -0700 (PDT) Return-Path: Received: from [75.220.244.15] (15.sub-75-220-244.myvzw.com. [75.220.244.15]) by mx.google.com with ESMTPSA id el16sm5196983oeb.2.2013.07.04.05.48.15 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 04 Jul 2013 05:48:18 -0700 (PDT) Subject: Re: [FlyRotary] Ram Air and filters References: From: Tracy Content-Type: text/plain; charset=us-ascii X-Mailer: iPad Mail (10B329) In-Reply-To: Message-Id: <27F30BFF-D108-4535-99EC-6E633CAB738C@gmail.com> Date: Thu, 4 Jul 2013 06:47:43 -0600 To: Rotary motors in aircraft Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (1.0) On Jul 4, 2013, at 6:18, Stephen Izett wrote: > Hi Guys >=20 > I've got to feed air from a under the spinner to the throttle body. > I'm interested in Ram Air but have some questions. >=20 > 1. What do we do about a bit of rain getting into the system? I gather ice= and snow is a huge problem and some designs have bypasses. Rain good, just like ADI. Flight into iceing & snow heavy enough to block i= ntake would probably have crashed you long before the inlet was blocked. b= ypass not a bad idea but lived without one for 2000 + hours. > 2. I take it that filtering is essential. How does water effect filter mat= erial? What filter material is best. On a car, a must. On an airplane, just be careful where you put inlet ( kee= p it high) and don't taxi behind someone on a dry dusty taxiway. Never had= an air filter. > 3. Is there a valve available to purchase to switch between filtered and n= on filtered ram air? >=20 > Cheers >=20 > Steve Izett >=20 >=20 >=20 >=20 > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List= .html