X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 12 Oct 2013 19:00:09 -0400 Message-ID: X-Original-Return-Path: Received: from qmta07.westchester.pa.mail.comcast.net ([76.96.62.64] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6512069 for lml@lancaironline.net; Fri, 11 Oct 2013 16:22:21 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.62.64; envelope-from=jmorgan1023@comcast.net Received: from omta09.westchester.pa.mail.comcast.net ([76.96.62.20]) by qmta07.westchester.pa.mail.comcast.net with comcast id bvm01m0160SCNGk57wMmgn; Fri, 11 Oct 2013 20:21:46 +0000 Received: from [192.168.1.102] ([24.11.157.196]) by omta09.westchester.pa.mail.comcast.net with comcast id bwMm1m00J4EXR5U3VwMmRj; Fri, 11 Oct 2013 20:21:46 +0000 From: Jack Morgan Mime-Version: 1.0 (Apple Message framework v1283) Content-Type: multipart/alternative; boundary="Apple-Mail=_05DB7BA3-6E9D-4970-A90F-A9E518B2B773" Subject: Pin 13 X-Original-Date: Fri, 11 Oct 2013 16:21:47 -0400 In-Reply-To: X-Original-To: Lancair Mailing List References: X-Original-Message-Id: X-Mailer: Apple Mail (2.1283) --Apple-Mail=_05DB7BA3-6E9D-4970-A90F-A9E518B2B773 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 Hi Colyn, My notes from the conversation with Dukes say that pin 13 goes to the = manual dump switch on the panel. This is not in agreement with the = Lancair document page 32-25 Chapter 32 revised 24 Feb 98. I didn't ask about the functional differences between 4 and 13 so can't = really help there. Mine is wired with 4 to the gear and airspeed safety = micro switches and 13 to the panel dump switch. I didn't bother to = remove the gear switch wiring since it was in place before I made the = decision to skip the electric vacuum pump. I suspect both pins are diode isolated from one another and have the = same function which explains why the Lancair documentation was OK as is. = If Dukes only provided one pin for dump it would complicate the aircraft = wiring unnecessarily. Maybe someone on the list has checked this out and can help. Jack Morgan On Oct 11, 2013, at 6:00 AM, Lancair Mailing List wrote: > From: Colyn Case > Subject: Re: [LML] Vacuun for pressurization > Date: October 10, 2013 9:23:33 AM EDT > To: "Lancair Mailing List" >=20 >=20 > Jack, what you describe below sounds like pin 4. Did you happen to = determine what pin 13 does exactly? >=20 > Also, in case there is anyone out there that does not have A/C, = another use of pin 4+vac is to open the outflow valve fully to maximize = fresh air flow through the cabin when not pressurized. For this you = would need a manual switch to pin for which bypasses the usual = gear/airspeed interlock. >=20 > Colyn >=20 --Apple-Mail=_05DB7BA3-6E9D-4970-A90F-A9E518B2B773 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=iso-8859-1 Hi = Colyn,

My notes from the conversation with Dukes say = that pin 13 goes to the manual dump switch on the panel. This is not in = agreement with the Lancair document page 32-25 Chapter 32 revised 24 Feb = 98.

I didn't ask about the functional = differences between 4 and 13 so can't really help there. Mine is wired = with 4 to the gear and airspeed safety micro switches and 13 to the = panel dump switch. I didn't bother to remove the gear switch wiring = since it was in place before I made the decision to skip the electric = vacuum pump.

I suspect both pins are diode = isolated from one another and have the same function which explains why = the Lancair documentation was OK as is. If Dukes only provided one pin = for dump it would complicate the aircraft wiring = unnecessarily.

Maybe someone on the list has = checked this out and can help.

Jack = Morgan
= --Apple-Mail=_05DB7BA3-6E9D-4970-A90F-A9E518B2B773--