X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from atlrel6.hp.com ([156.153.255.205] verified) by logan.com (CommuniGate Pro SMTP 5.1.11) with ESMTPS id 2245552 for flyrotary@lancaironline.net; Mon, 06 Aug 2007 11:11:52 -0400 Received-SPF: none receiver=logan.com; client-ip=156.153.255.205; envelope-from=dale.r@cox.net Received: from atarelint01.atl.hp.com (atarelint01.atl.hp.com [15.45.89.136]) by atlrel6.hp.com (Postfix) with ESMTP id A4F9B35D74 for ; Mon, 6 Aug 2007 11:11:03 -0400 (EDT) Received: from [16.83.211.151] (unknown [16.83.211.151]) by atarelint01.atl.hp.com (Postfix) with ESMTP id DDD5834051 for ; Mon, 6 Aug 2007 11:09:48 -0400 (EDT) Message-ID: <46B73990.7020002@cox.net> Date: Mon, 06 Aug 2007 08:09:04 -0700 From: Dale Rogers Reply-To: dale.r@cox.net User-Agent: Thunderbird 2.0.0.5 (Windows/20070716) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Alternator drawing current at rest. References: In-Reply-To: Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Dave,

If you're going to bring it into the cabin, why not use a shielded wire?
Or, at least bring it in and out on a tightly twisted pair?

Dale R.

David Leonard wrote:

Yep, that was the problem. I had it wired so that the field windings were active whenever there was power to the system. I did that to cut down on audio noise, but have decided to bring the field lead back into the cabin so I can control it. Will add a filter and live with the remaining noise.

Dave Leonard

On 8/5/07, Al Gietzen <ALVentures@cox.net> wrote:

Subject: [FlyRotary] Alternator drawing current at rest.

That current draw for the coils did seem high, so I checked further into it. Turns out it is the alternator drawing the 3 amps, not the coils. It gets warm to the touch. Is that normal?

Dave Leonard

Sounds about right. I measured the field winding draw at about 2.5 A, engine off.

Al

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net