X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 50 [XX] Return-Path: Received: from sccrmhc11.comcast.net ([204.127.200.81] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2020147 for flyrotary@lancaironline.net; Tue, 01 May 2007 17:30:12 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.200.81; envelope-from=rlwhite@comcast.net Received: from rlwhite (c-68-35-160-229.hsd1.nm.comcast.net[68.35.160.229]) by comcast.net (sccrmhc11) with SMTP id <2007050121291001100fh3ofe>; Tue, 1 May 2007 21:29:21 +0000 Date: Tue, 1 May 2007 15:29:38 -0600 From: Bob White To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Throttle body size/ other "Paul" issues Message-Id: <20070501152938.bf80b29b.rlwhite@comcast.net> In-Reply-To: References: X-Mailer: Sylpheed 2.4.0 (GTK+ 2.10.11; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Hi Tracy, A two pole on-on-on switch can be connected for that functionality. I don't know how his was wired. The message was posted on Paul's list and I just wanted to clarify what he was saying. I'm not sure which Mark it is, but I don't think he's on this list. Bob W. On Tue, 1 May 2007 16:59:41 -0400 "Tracy Crook" wrote: > Opps, on further thought, guess it would have to be a triple pole three position, center on toggle switch. Do they make such a thing? > > Tracy > ----- Original Message ----- > From: Tracy Crook > To: Rotary motors in aircraft > Sent: Tuesday, May 01, 2007 3:58 PM > Subject: [FlyRotary] Re: Throttle body size/ other "Paul" issues > > > Thanks Bob, I didn't get that part. (or it was a different message?) The part I got was asking for a diode fix to prevent the problem (message didn't specify what that was). Paul then suggested a diode in series with the driver which would in-fact prevent the injector current from powering the EC2 but it also prevented the injector from firing as well. > > A triple pole double throw, center off switch might accomplish the single switch goal if wired correctly. I have no problem with that but don't see how it is related to the 'diode fix'. > > Tracy > ----- Original Message ----- > From: Bob White > To: Rotary motors in aircraft > Sent: Tuesday, May 01, 2007 3:08 PM > Subject: [FlyRotary] Re: Throttle body size/ other "Paul" issues > > > To put the quote in context, here is the rest of it. > > "... > His recommended solution is to put on-off switches for both the primary > and secondary injector pairs. His logic is this allows one to disable > an injector pair if it is misbehaving, and at the same time prevent the > backward EC-2 power phenomenon mentioned above. I am not a fan of this > solution - I wired my system with a single switch > primary-both-secondary. I figure if I have injector problems, I don't > want to be flipping a pair of switches trying to find the right > setting. There is comfort in knowing I need only flip a single switch > either up or down to disable which ever pair is not working. > ... > Mark" > > So it's really just an issue of his preference for having one switch > instead of two. Apparently he doesn't have a master switch for the bus > either or didn't turn it off. Otherwise, the only time the back power > causes a problem is one of the reset modes for the EC2. > > 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/