X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 4.3.2) with ESMTP id 963656 for flyrotary@lancaironline.net; Wed, 25 May 2005 22:13:12 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.70; envelope-from=ceengland@bellsouth.net Received: from ibm67aec.bellsouth.net ([209.214.146.82]) by imf22aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050526021221.SCJ2086.imf22aec.mail.bellsouth.net@ibm67aec.bellsouth.net> for ; Wed, 25 May 2005 22:12:21 -0400 Received: from [209.214.146.82] by ibm67aec.bellsouth.net (InterMail vG.1.02.00.01 201-2136-104-101-20040929) with ESMTP id <20050526021220.LCVW8829.ibm67aec.bellsouth.net@[209.214.146.82]> for ; Wed, 25 May 2005 22:12:20 -0400 Message-ID: <4295308A.8090206@bellsouth.net> Date: Wed, 25 May 2005 21:12:26 -0500 From: Charlie England User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Circuit ''under load'' & continuity tester References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit A quick & dirty way to check for ground problems under load is to use a simple digital volt meter & measure from the ground side of the load to the negative terminal of the battery. If the ground is good, you'll read very near 0 volts. If it's poor, the reading will be somewhere between 0 & supply voltage, depending on how bad the ground is. Charlie Chris Sargent wrote: > Bob and John, > > Here's a link to Bob Nuckoll's version of a continuity and load > tester . I believe this is what you are looking for. > > The PDF document showing it's use and construction are in the link. > > http://www.aeroelectric.com/articles/grnding.pdf > > > Chris Sargent > Huntsville, AL > > > > John, > > > > Could you elaborate a little more on this gizmo, like maybe a > schematic or picture? > > Sorry about the difficulty with the wiring. > > > > Bob Perkinson > > Hendersonville, TN. > > RV9A > > If Nothing Changes > > Nothing Changes! > > > > Howard left me with a very simple, cheap and extremely useful testing > setup made with two voltmeters and a D cell battery which allows me to > test a circuit under load and identify any weak connections, bad > crimps, cold solder joints etc. With this little gizmo I am newly > empowered, and have a lot more testing to do. > > > > >