X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 01 Feb 2009 17:57:10 -0500 Message-ID: X-Original-Return-Path: Received: from n13b.bullet.mail.mud.yahoo.com ([68.142.207.222] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with SMTP id 3470450 for lml@lancaironline.net; Sat, 31 Jan 2009 17:03:45 -0500 Received: from [68.142.194.243] by n13.bullet.mail.mud.yahoo.com with NNFMP; 31 Jan 2009 22:03:43 -0000 Received: from [68.142.201.248] by t1.bullet.mud.yahoo.com with NNFMP; 31 Jan 2009 22:03:43 -0000 Received: from [127.0.0.1] by omp409.mail.mud.yahoo.com with NNFMP; 31 Jan 2009 22:03:43 -0000 X-Yahoo-Newman-Id: 256036.74035.bm@omp409.mail.mud.yahoo.com Received: (qmail 43152 invoked from network); 31 Jan 2009 22:03:43 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Received:X-YMail-OSG:X-Yahoo-Newman-Property:From:To:References:In-Reply-To:Subject:Date:Message-ID:MIME-Version:Content-Type:X-Mailer:Thread-Index:Content-Language; b=A0PXUBb/tmKGrX/qRte/902yHFVQHEeRDwhNTYteZ9vgnmizAAL2NrjiemZbeSCMtxeBCzv3/krDW83eJpamSeWKq3N0BNFwXg1DkjaSqahspQxo/myNbM4TMQfCto8H3tT3NUa6OKFWzjN8/cwkaxSA4oW+zljQS2lb/F3pFeI= ; Received: from unknown (HELO Laptop) (mcmess1919@72.177.77.73 with login) by smtp123.plus.mail.mud.yahoo.com with SMTP; 31 Jan 2009 22:03:42 -0000 X-YMail-OSG: ahSCYQoVM1lACpuQJiLcNGW2z4P7Lf3uQ5kfHJ5UuX4NXru35_Mni0ASHeBFy1IMV6FefmGbi.GGuGBbHsbiUA6BdseQFFmDcA7uac.D74V968R9nWFxRX0ZGODpOsc8mv5o3Ra1LroU2jvM_Tp7Kb5WbfbSi9WjW4ujKY3jICVGoU3Ua08fkDSO X-Yahoo-Newman-Property: ymail-3 From: "Steve Colwell" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: Fuel Tank Testing X-Original-Date: Sat, 31 Jan 2009 16:03:42 -0600 X-Original-Message-ID: <006901c983ef$c80c4700$5824d500$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_006A_01C983BD.7D71D700" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcmDoRh0+jq298PvRKWR42R3+ylsbgATOdyQ Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_006A_01C983BD.7D71D700 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Christian, I am not trying to "flame" you, but fuel has a much lower surface tension than water and will leak thru a hole that water will not. A very small leak may not show up with your method. I saw a Legacy wing that had a leak in the main spar web that traveled several feet, all the way to the inboard end of the main spar. I think it required deskinning the wing. The moral being to VERY carefully check the tank sealer with a bright light before closing the wings. Steve Colwell Legacy In Austria we use following test to check the fueltanks: Fill the wings completly with water. Seal all openings. Add a tube to the fuel pickup. This tube should be 1.43 meters high and will also be filled with water. Keep this for a few hours and check the water level. 1,43m of water = 0,14bar = 4,14inHG Pressure There is no barometric error. Christian Lnc2 / 390 OE-VCM www.lancair.at __________ NOD32 3813 (20090130) Information __________ This message was checked by NOD32 antivirus system. http://www.eset.com ------=_NextPart_000_006A_01C983BD.7D71D700 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Christian,

I am not trying to “flame” you, but fuel has = a much lower surface tension than water and will leak thru a hole that water = will not. A very small leak may not show up with your method. I = saw a Legacy wing that had a leak in the main spar web that traveled several = feet, all the way to the inboard end of the main spar. I think it required deskinning the wing. The moral being to VERY carefully check the = tank sealer with a bright light before closing the = wings.

Steve Colwell Legacy

In Austria we use following test to check the = fueltanks:

Fill the wings completly with water. Seal all openings. = Add a tube to the fuel pickup.

This tube should be 1.43 meters high and will also be filled = with water. Keep this for a few hours

and check the water level.

1,43m of water =3D 0,14bar =3D 4,14inHG = Pressure

There is no barometric error.

Christian

Lnc2 / 390

OE-VCM

__________ NOD32 3813 (20090130) Information __________

This message was checked by NOD32 antivirus system.
http://www.eset.com

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