X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Received: from imf25aec.mail.bellsouth.net ([205.152.59.73] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 1961879 for flyrotary@lancaironline.net; Mon, 02 Apr 2007 06:27:41 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.73; envelope-from=atlasyts@bellsouth.net Received: from ibm69aec.bellsouth.net ([72.153.193.66]) by imf25aec.mail.bellsouth.net with ESMTP id <20070402102653.ZWYP6271.imf25aec.mail.bellsouth.net@ibm69aec.bellsouth.net> for ; Mon, 2 Apr 2007 06:26:53 -0400 Received: from [192.168.0.247] (really [72.153.193.66]) by ibm69aec.bellsouth.net with ESMTP id <20070402102653.PRQW1081.ibm69aec.bellsouth.net@[192.168.0.247]> for ; Mon, 2 Apr 2007 06:26:53 -0400 Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: References: Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <7CF8E4C9-5D0E-481C-949D-47B9373C58C5@bellsouth.net> Content-Transfer-Encoding: 7bit From: Bulent Aliev Subject: Re: [FlyRotary] Re: Uneventful flight Date: Mon, 2 Apr 2007 06:26:51 -0400 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.752.2) On Apr 2, 2007, at 12:12 AM, Dale Rogers wrote: > Bulent Aliev wrote: >> crimp connector splice that was done by my electronics engineer >> neighbor, totally loose. The metal part inside was blue from heat >> (created from the sparking I guess?). So I had it fixed. The noise >> is gone and me and my flight captain are happy. > > Hi All, > > Arcing should be black pits, not a blued pin or socket. When a > connector is loose, it only makes contact on a very small portion of > the available contact surface, forcing all the current to go through > a very small point-of-contact. This is the same as trying to push 20 > Amps through a #18 wire. It is called a high resistance connection. > What happens when current is pushed through an resistive object? > Heat is generated. Enough to turn the pin blue. > > Dale R > COZY MkIV #1254 > Dale, if there is no spark, what generated the radio noise? Buly