Return-Path: Received: from imf19aec.mail.bellsouth.net ([205.152.59.67] verified) by logan.com (CommuniGate Pro SMTP 4.1.5) with ESMTP id 2637662 for flyrotary@lancaironline.net; Wed, 15 Oct 2003 09:57:21 -0400 Received: from TOSHIBAjhr ([209.214.14.47]) by imf19aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with SMTP id <20031015135713.NYUE1828.imf19aec.mail.bellsouth.net@TOSHIBAjhr> for ; Wed, 15 Oct 2003 09:57:13 -0400 From: "John Slade" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: EWP - series pumps and wacky ideas Date: Wed, 15 Oct 2003 09:57:11 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 In-Reply-To: Importance: Normal > It would be relatively trivial to design a circuit that uses current > sensing to detect pump failure. Current to the pump that falls either > above or below the design window can be used to trigger an alarm or > activate the backup. Response would be nearly instant. Relatively trivial to you, perhaps. Current sensing sounds like a great way to spot a fuel or water pump failure, or even potential for failure. I managed to build an RST intercom that sorta works. Could I build one of these gizmos? What would be involved? John Slade (electronically challenged, but keen to learn)