X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mx2.netapp.com ([216.240.18.37] verified) by logan.com (CommuniGate Pro SMTP 5.3.10) with ESMTPS id 4610693 for flyrotary@lancaironline.net; Fri, 03 Dec 2010 16:10:51 -0500 Received-SPF: softfail receiver=logan.com; client-ip=216.240.18.37; envelope-from=echristley@nc.rr.com X-IronPort-AV: E=Sophos;i="4.59,295,1288594800"; d="scan'208";a="490676501" Received: from smtp1.corp.netapp.com ([10.57.156.124]) by mx2-out.netapp.com with ESMTP; 03 Dec 2010 13:10:16 -0800 Received: from [10.62.16.176] (dself-desktop.hq.netapp.com [10.62.16.176] (may be forged)) by smtp1.corp.netapp.com (8.13.1/8.13.1/NTAP-1.6) with ESMTP id oB3LAFlx027424 for ; Fri, 3 Dec 2010 13:10:16 -0800 (PST) Message-ID: <4CF95CB7.8090001@nc.rr.com> Date: Fri, 03 Dec 2010 16:10:15 -0500 From: Ernest Christley Reply-To: echristley@nc.rr.com User-Agent: Thunderbird 2.0.0.24 (X11/20100623) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: intake blower update References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Kelly Troyer wrote: > Ernest, > Your Manifold Pressure gage should tell you if any boost above > atmospheric > pressure is being generated............ > > > Kelly Troyer > *"DYKE DELTA JD2" (Eventually)* > The MP measures after the air filter, and any other restriction I, by necessity or stupidity, include in the intake system, with two rotors trying to suck a vacuum. The blower is trying to add back some air pressure to that vacuum that is being sucked. What is the contribution of the blower? Another option I have is to disconnect and turn around the air filter, and cap the blower. Then the engine will be sucking ambient air pressure, and I could use a separate gauge to measure the static pressure of the blower. Hmm? Maybe that is the way to go.