X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Received: from fed1rmmtao103.cox.net ([68.230.241.43] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 1961564 for flyrotary@lancaironline.net; Mon, 02 Apr 2007 00:13:21 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.43; envelope-from=dale.r@cox.net Received: from fed1rmimpo01.cox.net ([70.169.32.71]) by fed1rmmtao103.cox.net (InterMail vM.7.05.02.00 201-2174-114-20060621) with ESMTP id <20070402041233.FYYK24385.fed1rmmtao103.cox.net@fed1rmimpo01.cox.net> for ; Mon, 2 Apr 2007 00:12:33 -0400 Received: from [192.168.1.100] ([72.223.48.245]) by fed1rmimpo01.cox.net with bizsmtp id i4CY1W00J5HQYSo0000000; Mon, 02 Apr 2007 00:12:33 -0400 Message-ID: <46108297.10806@cox.net> Date: Sun, 01 Apr 2007 21:12:07 -0700 From: Dale Rogers Reply-To: dale.r@cox.net User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Uneventful flight References: In-Reply-To: Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit 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