X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [67.8.181.30] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WEBUSER 5.1.9) with HTTP id 2078525 for flyrotary@lancaironline.net; Fri, 01 Jun 2007 09:50:53 -0400 From: marv@lancair.net Subject: Re: [FlyRotary] Injector disable swtich orientation was [FlyRotary] Re: It is ALIVE!!! First Start in Houston To: "Rotary motors in aircraft" X-Mailer: CommuniGate Pro WebUser v5.1.9 Date: Fri, 01 Jun 2007 09:50:53 -0400 Message-ID: In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/html;charset=iso-8859-1 Content-Transfer-Encoding: 8bit
I dunno, Ed.. I think the real issue is one of nomenclature.  The property we typically try to control with a switch is the provision of power to a specific device.  In this instance, however, the effect that has been named (ie, to disable the injectors) requires an inverted result from a power perspective to achieve the named function.  It is no wonder that one would assume that you need to throw the switch upward to "turn on" the disable function.  If you look at it a different way, if the name of the function doubled as the "on" indicator, then placing the names above the switches would serve both pruposes... in the case of disabling the injectors, flipping the switch upward would, in fact, disable them.  However, in the wiring behind the panel that switch would have to be wired to only allow power through itself when in the down, ie, the "not disabled", position.  Seems to me the easiest solution is to stop thinking in terms of disabling the injectors (basically an inverse function) and to simply consider these switches and their functions in the normal sense by calling them "Injectors Primary" and "Injectors Secondary" and labelling them "on" above the switches and "off" below.

 That's my 2c.

   <Marv>


"Ed Anderson" <eanderson@carolina.rr.com>:
"""
Mike, I believe the "problem" was in the orientation of the injector disable
switches in the panel.
"""