X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-mealy.atl.sa.earthlink.net ([209.86.89.69] verified) by logan.com (CommuniGate Pro SMTP 6.0.4) with ESMTP id 6174724 for lml@lancaironline.net; Mon, 01 Apr 2013 15:17:42 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.69; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=tU8BFrhmYyk3fkRQDPVrl5zKRO4N7t3LxWG1Gm9DR0bYlduyC84Tu+8NB7mWiyQW; h=Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [71.181.119.129] (helo=[192.168.1.24]) by elasmtp-mealy.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1UMkE9-0004f5-T5 for lml@lancaironline.net; Mon, 01 Apr 2013 15:17:10 -0400 From: Colyn Case Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: multipart/alternative; boundary=Apple-Mail-86--10426916 Subject: Re: [LML] autotrim and safety trim Date: Mon, 1 Apr 2013 15:17:09 -0400 In-Reply-To: To: "Lancair Mailing List" References: Message-Id: <9730B855-37A1-4505-B4E5-0A6574DDCC9C@earthlink.net> X-Mailer: Apple Mail (2.1085) X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da94097c763e8f9be83b29cfee7d55e16a8d4350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 71.181.119.129 --Apple-Mail-86--10426916 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii below On Apr 1, 2013, at 11:42 AM, Dan Ballin wrote: My understanding of the trutrak autotrim is that when the AP is off, the = signal from the manual trim switch to the trim motor is direct so a = failure of the auto trim will not have an effect on the trim system. I = also talked to Zach at Trutrak and he says that the relays they use and = the system design is set to fail to manual trim. =20 >> up to here I agree with you. The safety trim box would protect you = from any failures in your manual switch system which are connected when = the auto-trim is off.....if the auto-trim relays return (via spring) to = the unpowered position. =20 It does not follow that safety trim does anything whatsoever if there is = a problem with the AP auto-trim function. So it seems unlikely that the AP would be involved in a runaway trim = scenario and that the safety trim box would indeed protect against that. Dan LEG2 N386DM --Apple-Mail-86--10426916 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii below
On = Apr 1, 2013, at 11:42 AM, Dan Ballin wrote:

My = understanding of the trutrak autotrim is that when the AP is off, the = signal from the manual trim switch to the trim motor is direct so a = failure of the auto trim will not have an effect on the trim = system.  I also talked to Zach at Trutrak and he says that the = relays they use and the system design is set to fail to manual = trim.  
>> up to here I agree with you.    The = safety trim box would protect you from any failures in your manual = switch system which are connected when the auto-trim is off.....if the = auto-trim relays return (via spring) to the unpowered position. =   
It does not follow that safety trim does anything = whatsoever if there is a problem with the AP auto-trim = function.

So it seems unlikely that the AP = would be involved in a runaway trim scenario and that the safety trim = box would indeed protect against that.

Dan
LEG2   N386DM

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