X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 01 Feb 2012 07:45:20 -0500 Message-ID: X-Original-Return-Path: Received: from nm12.access.bullet.mail.mud.yahoo.com ([66.94.237.213] verified) by logan.com (CommuniGate Pro SMTP 5.4.3) with SMTP id 5372223 for lml@lancaironline.net; Tue, 31 Jan 2012 19:44:19 -0500 Received-SPF: neutral receiver=logan.com; client-ip=66.94.237.213; envelope-from=browncc1@verizon.net Received: from [66.94.237.198] by nm12.access.bullet.mail.mud.yahoo.com with NNFMP; 01 Feb 2012 00:43:45 -0000 Received: from [66.94.237.105] by tm9.access.bullet.mail.mud.yahoo.com with NNFMP; 01 Feb 2012 00:43:45 -0000 Received: from [127.0.0.1] by omp1010.access.mail.mud.yahoo.com with NNFMP; 01 Feb 2012 00:43:45 -0000 X-Yahoo-Newman-Id: 922303.71737.bm@omp1010.access.mail.mud.yahoo.com Received: (qmail 90724 invoked from network); 1 Feb 2012 00:43:45 -0000 X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: El9bfgIVM1l_jdFPk1EGDtH6Ab6bNqOARYZxft84vlogYds jwqD5A_SX7utVne4Hiv3qvEercXgtgu6w7OFsoPjc2umqqUdWKIqQv9TBlAM YDP1vaZGipE9edvCZKqoOgxMfjtH7IE.q5SlqxRZJwfsdppvaN2Mmra6c.hU 92bo_WSmDkHWAWt0iTat4PalnKOv9k.JlR.u5muZKGFjTwZd8a0lT6uh4KLD LALlEcHal73O7jQx8l5bX553bNPiTRfk3wzfuvBD67et101Le9G1DBEcbhXK pUCFrx86Pez9d4tbUrR6_Lp_bOGZtc5pmJ3FQjl8IUxs.n6fDP7Cr1gKIMbE aN7CgHNKwXBIMnIV7_YAZJGjK.iJuzGxKsciUlV3mFna1k7bYzXF.tf63Kr8 l4jB3IhMFOUPa4qCBaKGY08ZWQbkOVWiX5588Na.z9og- X-Yahoo-SMTP: F49l9g6swBC0R9n8vJIbm7Tf3P8Xlmia8rHIwTlO__Ml Received: from new-host-4.home (browncc1@72.64.81.165 with plain) by smtp103.vzn.mail.ne1.yahoo.com with SMTP; 31 Jan 2012 16:43:44 -0800 PST From: Charles Brown Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: multipart/alternative; boundary=Apple-Mail-2--290010607 Subject: Re: [LML] Re: Legacy fuel vent check valves. X-Original-Date: Tue, 31 Jan 2012 18:43:43 -0600 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: <3B2D6731-8FDB-4492-B785-67350A93ED19@verizon.net> X-Mailer: Apple Mail (2.1084) --Apple-Mail-2--290010607 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 I have a very similar problem on my Legacy. If the tanks are full, fuel = leaks out of the left vent, with the airplane sitting on level ground. = I bought a replacement Andair check valve, but before installing it, I = tested and it flowed a decent trickle of fuel in the "checked" direction = (regardless of how the valve was oriented); so I conclude that they = don't completely seal. And I don't think you'd want them to, because = the pressure would have to get out some way when the fuel heats up... Further conclude that the purpose of the check valves is to prevent = major outflow during yaw maneuvering. Now, if someone can tell me why the fuel always seems to flow from my = right tank to my left, with the plane parked on level ground, even with = the fuel selector OFF, I'd be very interested! On Jan 31, 2012, at 6:22 PM, Bill Bradburry wrote: Jim, =20 N249B is in the paint shop as well!=20 =20 I was just thinking that if the check valve doesn=92t stop the flow of = fuel in the wrong direction, what useful purpose does it serve? I don=92t= see the need for it otherwise??? =20 Bill B =20 From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = Jim Frank Sent: Tuesday, January 31, 2012 6:47 PM To: lml@lancaironline.net Subject: [LML] Re: Legacy fuel vent check valves. =20 Bill, When I take off and my fuel tanks are full, I get fuel venting out of = the wing tips when the airplane yaws in turbulence. Right tank more = than left tank. Stops when I burn off about 5 gallons or so. I ask = another Legacy builder about this and he had the same issue. I figured = it was normal. Jim N23XF (in the paint shop) On 1/31/12 3:30 PM, "Bill Bradburry" wrote: I am concerned that the fuel vent check valves may be installed = backwards or are leaking. The fuel tanks seem to vent ok and I have not = seen any problems along those lines, but fuel runs out of the vents in = the wing tips any time I get much over a half to three quarters of a = tank. =20 Anyone else having this problem or have advice? =20 Bill B --Apple-Mail-2--290010607 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252

Further conclude that the = purpose of the check valves is to prevent major outflow during yaw = maneuvering.

Now, if someone can tell me why = the fuel always seems to flow from my right tank to my left, with the = plane parked on level ground, even with the fuel selector OFF, I'd be = very interested!


On Jan 31, 2012, at = 6:22 PM, Bill Bradburry wrote:

Re: [LML] Legacy fuel vent check valves.

Jim,

 

N249B is in the paint shop as = well! 

 

I was just thinking that if the = check valve doesn=92t stop the flow of fuel in the wrong direction, what = useful purpose does it serve?  I don=92t see the need for it = otherwise???

 

Bill = B

 

From: Lancair Mailing List = [mailto:lml@lancaironline.net] On = Behalf Of Jim Frank
Sent: Tuesday, January = 31, 2012 6:47 PM
To: lml@lancaironline.net
Subject: [LML] Re: Legacy = fuel vent check valves.

 

Bill,
When I take off and my fuel tanks are full, I get fuel venting out of = the wing tips when the airplane yaws in turbulence.  Right tank more than = left tank.  Stops when I burn off about 5 gallons or so.  I ask = another Legacy builder about this and he had the same issue.   I = figured it was normal.
Jim
N23XF
(in the paint shop)


On 1/31/12 3:30 PM, "Bill Bradburry" <bbradburry@bellsouth.net&= gt; wrote:

I am concerned that the fuel vent check valves may be installed backwards or = are leaking.  The fuel tanks seem to vent ok and I have not seen any = problems along those lines, but fuel runs out of the vents in the wing tips any = time I get much over a half to three quarters of a tank.
 
Anyone else having this problem or have advice?
 
Bill B


= --Apple-Mail-2--290010607--