X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from sccrmhc15.comcast.net ([204.127.200.85] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2081957 for flyrotary@lancaironline.net; Sun, 03 Jun 2007 15:32:45 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.200.85; envelope-from=rlwhite@comcast.net Received: from rlwhite (c-68-35-160-229.hsd1.nm.comcast.net[68.35.160.229]) by comcast.net (sccrmhc15) with SMTP id <2007060319320701500cbc4le>; Sun, 3 Jun 2007 19:32:07 +0000 Date: Sun, 3 Jun 2007 13:32:48 -0600 From: Bob White To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Houston, we have a problem... Message-Id: <20070603133248.e7adae97.rlwhite@comcast.net> In-Reply-To: References: X-Mailer: Sylpheed 2.4.2 (GTK+ 2.10.11; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Sun, 3 Jun 2007 11:09:59 -0800 "Al Gietzen" wrote: > Hi Al, > > The injectors should have power at all times. The other side of the > injector is grounded to activate it. > > Bob W. > > I guess that is a difference with my 20B version. On mine the staging relay > interrupts the power to the secondary injectors. > > Al > Tracy does some magic stuff with that EC2. With a V8 there are always two injector firing at once. As best I can understand it, the fuel is squirted in sort of whenever and the engine sucks it in when it needs it. So for a 20B, he uses 3 signals for the injectors and one for the staging relay which applies power to the secondaries. Bob W. -- N93BD - Rotary Powered BD-4 - http://www.bob-white.com 3.8 Hours Total Time and holding Cables for your rotary installation - http://www.roblinphoto.com/shop/