X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [216.211.128.10] (HELO mail-in04.adhost.com) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1127680 for flyrotary@lancaironline.net; Thu, 25 May 2006 12:03:24 -0400 Received-SPF: none receiver=logan.com; client-ip=216.211.128.10; envelope-from=joeh@pilgrimtech.com Received: from Pilgrim10 (tide502.microsoft.com [131.107.0.72]) by mail-in04.adhost.com (Postfix) with ESMTP id 9E2DAB9CA9 for ; Thu, 25 May 2006 09:04:11 -0700 (PDT) (envelope-from joeh@pilgrimtech.com) From: "Joe Hull" To: "'Rotary motors in aircraft'" Subject: RE: ***SPAM*** [FlyRotary] Re: Rotary Best Practices Web Page Date: Thu, 25 May 2006 09:02:44 -0700 Message-ID: <005f01c68014$a91fe9a0$cda0389d@redmond.corp.microsoft.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0060_01C67FD9.FCC111A0" X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 Thread-Index: AcaABHlN41TTI6snQb+YBYRjGiyP5gAD0pEQ In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0060_01C67FD9.FCC111A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable > Not certain I understand how vacuuming a tank makes things worst, = unless you are saying it could give you a false sense of all >being well, but = with debris remaining. =20 The issue with vacuuming a sealed tank from the filler hole is that once = you stick a big sucking hose in the filler hole what you will get is a lot = of in-rushing air around the nozzle that will blow bits of debris to the = four corners of your tank. The air being sucked from the tank is replaced by = air coming in the filler hole. So, if you use a small hose =96 say =BD=94 = ID then the amount and velocity of in-rushing air won=92t be as great and won=92t = disturb any debris that might be near the filler hole. Takes a long time to = vacuum the tank with a =BD=94 ID hose =96 but it=92s the only way to do the job effectively. =20 Thanx, Joe Hull Cozy Mk-IV #991 (In Phase1 Flight Test - 10.9 hrs flown)=20 Redmond (Seattle), Washington ------=_NextPart_000_0060_01C67FD9.FCC111A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

> Not certain I understand how vacuuming a = tank makes things worst, unless you are saying it could give you a false sense of = all >being well, but with debris remaining.

 

The issue with vacuuming a sealed = tank from the filler hole is that once you stick a big sucking hose in the = filler hole what you will get is a lot of in-rushing air around the nozzle that = will blow bits of debris to the four corners of your tank. The air being = sucked from the tank is replaced by air coming in the filler hole.=A0 So, if you use = a small hose – say =BD” ID then the amount and velocity of = in-rushing air won’t be as great and won’t disturb any debris that might be near the = filler hole. Takes a long time to vacuum the tank with a =BD” ID hose = – but it’s the only way to do the job effectively.

 

Thanx,

Joe = Hull

Cozy Mk-IV #991 (In Phase1 Flight = Test - 10.9 hrs flown)

Redmond (Seattle), Washington

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