X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 21 Aug 2014 13:14:17 -0400 Message-ID: X-Original-Return-Path: Received: from vms173011pub.verizon.net ([206.46.173.11] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTP id 7108067 for lml@lancaironline.net; Thu, 21 Aug 2014 12:57:01 -0400 Received-SPF: pass receiver=logan.com; client-ip=206.46.173.11; envelope-from=n5zq@verizon.net Received: from BillHP ([unknown] [173.72.165.67]) by vms173011.mailsrvcs.net (Sun Java(tm) System Messaging Server 7u2-7.02 32bit (built Apr 16 2009)) with ESMTPA id <0NAO00A0D1PUJ370@vms173011.mailsrvcs.net> for lml@lancaironline.net; Thu, 21 Aug 2014 11:56:19 -0500 (CDT) X-Original-Message-id: <58CA71EC5E434C0D9F0675D4933E17BD@BillHP> From: "Bill Harrelson" X-Original-To: "Lancair Mailing List" References: In-reply-to: Subject: pitot and static system water traps X-Original-Date: Thu, 21 Aug 2014 12:55:40 -0400 MIME-version: 1.0 Content-type: multipart/alternative; boundary="----=_NextPart_000_00FF_01CFBD3F.35F67F90" X-Priority: 3 X-MSMail-priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 16.4.3528.331 X-MIMEOLE: Produced By Microsoft MimeOLE V16.4.3528.331 This is a multi-part message in MIME format. ------=_NextPart_000_00FF_01CFBD3F.35F67F90 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Rob, I put two of these static traps in the IV. Even though the airplane has = flown through heavy rain and spent a few nights outside in hard blowing = rain, I ain=E2=80=99t never seen nuthin in =E2=80=98em. I believe that = if your lines exit the static ports upward for several inches = you=E2=80=99ll decrease the possibility of water accumulation by a great = deal. In the 320 I put no traps, just exited the ports upward and never had = any water in 2300 hrs. If you are going to use a trap, I=E2=80=99m sure = that anything you can come up with will work as well as the commercial = trap. If you do use a trap, put it as close to the static port as = practical. The amount of water you will catch, if any, will be measured = by the milliliter, not by the gallon. Most commercial pitot tubes have a built in drain so it should not be = necessary in the pitot system.=20 Bill Harrelson N6ZQ IV 575 hrs ------=_NextPart_000_00FF_01CFBD3F.35F67F90 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
Rob,
 
I put two of these static = traps in the=20 IV. Even though the airplane has flown through heavy rain and spent a = few nights=20 outside in hard blowing rain, I ain=E2=80=99t never seen nuthin in = =E2=80=98em.  I believe=20 that if your lines exit the static ports upward for several inches = you=E2=80=99ll=20 decrease the possibility of water accumulation by a great = deal.
 
In the 320 I put no traps, = just exited=20 the ports upward and never had any water in 2300 hrs. If you are going = to use a=20 trap, I=E2=80=99m sure that anything you can come up with will work as = well as the=20 commercial trap. If you do use a trap, put it as close to the static = port as=20 practical. The amount of water you will catch, if any, will be measured = by the=20 milliliter, not by the gallon.
 
Most commercial pitot tubes have a built in drain so it should not = be=20 necessary in the pitot system.
 
Bill Harrelson
N6ZQ IV  575 hrs
 
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