X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 14 Jan 2008 12:46:58 -0500 Message-ID: X-Original-Return-Path: Received: from [206.246.194.60] (HELO visi.net) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTP id 2644254 for lml@lancaironline.net; Mon, 14 Jan 2008 07:47:34 -0500 Received-SPF: none receiver=logan.com; client-ip=206.246.194.60; envelope-from=rpastusek@htii.com X-Virus-Scanner-Engine: ClamAV Received: from [71.178.198.10] (account rpastusek@htii.com HELO dlhtpax009) by visi.net (CommuniGate Pro SMTP 4.2) with ESMTP id 251784197 for lml@lancaironline.net; Mon, 14 Jan 2008 07:46:20 -0500 From: "Robert Pastusek" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Re: Single Point Failures X-Original-Date: Mon, 14 Jan 2008 07:46:39 -0500 X-Original-Message-ID: <018b01c856ab$8766b270$96341750$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_018C_01C85681.9E90AA70" X-Mailer: Microsoft Office Outlook 12.0 thread-index: AchVUWEcGDmHM4G/TkSej+Gau0skfwBVrcDw Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_018C_01C85681.9E90AA70 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit "There is no fool proof device. Fools are so ingenious." Anom Yep, I certainly agree with those bottom lines. After all, almost all of us still operate with only one (1) pitot tube. What good is my AOA device and two airspeed indicators if they use the same reference source? Scott Scott, I was faced with the same problem when I elected to add a Dynon D-10A to my panel fairly late in construction of my IV-P. Hooking it to the same power, pitot and static ports seemed a bad way to configure a secondary system, so I installed a separate pitot and static source for it. The new light weight tubing and nylon fittings seem ideal for this application. As the plane was already painted, I installed the Dynon's straight pitot/AOA tube through a hole in the leading edge of my right winglet with minimal damage to the already-painted winglet. Worked well, but I do have a pitot tube sticking out of the right winglet that seems ideally placed to catch you in the chest during walk around. At least the flag on it is pretty visible. J The Dynon is installed on the right side of the panel, along with a Garmin 496, giving me an "internally battery powered" ability to fly and navigate with loss of all electrical systems. I did compromise and connect an aircraft power feed to these instruments for "normal" use by my flying partner. I also "discovered" during testing that all battery/alternator/power controls for the airplane pass through a single cannon plug on the firewall-a design error that was easily avoided by better planning, but has been a b---- to correct after the engine was installed and the firewall wiring closed out. However, after seeing the results of the cannon plug being accidentally disconnected during testing, I felt this was such a critical error that I went back and re-wired to provide separate paths for the independent electrical systems. .just something to think about. Your first line above applies to me.in spades! Bob ------=_NextPart_000_018C_01C85681.9E90AA70 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

"There is no fool proof device.  Fools = are so ingenious." Anom

 

Yep, I certainly agree with those bottom lines.  After = all, almost all of us still operate with only one (1) pitot tube. What good = is my AOA device and two airspeed indicators if they use the same reference source? 

 

Scott

 

Scott,

I was faced with the = same problem when I elected to add a Dynon D-10A to my panel fairly late in = construction of my IV-P. Hooking it to the same power, pitot and static ports seemed =  a bad way to configure a secondary system, so I installed a separate pitot and = static source for it. The new light weight tubing and nylon fittings seem ideal = for this application. As the plane was already painted, I installed the = Dynon’s straight pitot/AOA tube through a hole in the leading edge of my right = winglet with minimal damage to the already-painted winglet. Worked well, but I = do have a pitot tube sticking out of the right winglet that seems ideally placed = to catch you in the chest during walk around. At least the flag on it is = pretty visible. J

The Dynon is installed = on the right side of the panel, along with a Garmin 496, giving me an = “internally battery powered” ability to fly and navigate with loss of all = electrical systems. I did compromise and connect an aircraft power feed to these instruments for “normal” use by my flying partner. I also = “discovered” during testing that all battery/alternator/power controls for the = airplane pass through a single cannon plug on the firewall—a design error that = was easily avoided by better planning, but has been a b---- to correct after = the engine was installed and the firewall wiring closed out. However, after = seeing the results of the cannon plug being accidentally disconnected during = testing, I felt this was such a critical error that I went back and re-wired to = provide separate paths for the independent electrical systems. …just = something to think about.

Your first line above = applies to me…in spades!

Bob

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