X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 29 Mar 2012 09:02:45 -0400 Message-ID: X-Original-Return-Path: Received: from oproxy3-pub.bluehost.com ([69.89.21.8] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with SMTP id 5460292 for lml@lancaironline.net; Wed, 28 Mar 2012 16:33:38 -0400 Received-SPF: pass receiver=logan.com; client-ip=69.89.21.8; envelope-from=danny@n107sd.com Received: (qmail 32216 invoked by uid 0); 28 Mar 2012 20:33:02 -0000 Received: from unknown (HELO host295.hostmonster.com) (66.147.240.95) by oproxy3.bluehost.com with SMTP; 28 Mar 2012 20:33:02 -0000 Received: from pool-71-114-20-44.washdc.dsl-w.verizon.net ([71.114.20.44] helo=DannyLaptop) by host295.hostmonster.com with esmtpa (Exim 4.76) (envelope-from ) id 1SCzYB-0005QU-Tb for lml@lancaironline.net; Wed, 28 Mar 2012 14:33:02 -0600 From: "Danny" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Re: LNC2 gear diagnosis X-Original-Date: Wed, 28 Mar 2012 16:32:56 -0400 X-Original-Message-ID: <007201cd0d21$f6a06100$e3e12300$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0073_01CD0D00.6F8EC100" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ac0NEAbmULkj8OI8SmSMg4n7fzAixAAEdQOw Content-Language: en-us X-Identified-User: {3234:host295.hostmonster.com:wunderwe:n107sd.com} {sentby:smtp auth 71.114.20.44 authed with danny@n107sd.com} This is a multi-part message in MIME format. ------=_NextPart_000_0073_01CD0D00.6F8EC100 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Bucky. Care to guess where I=92ll be looking for a new valve = this week? =20 Danny LNC2-360, 550 hours N 38=B0 43' 25.7" W 77=B0 30' 38.6" =20 From: bucky [mailto:bwhittier@ltol.com]=20 Sent: Wednesday, March 28, 2012 2:24 PM To: lml@lancaironline.net Subject: [LML] Re: LNC2 gear diagnosis =20 FYI, I had same problem. I went to the local Ace Hardware, found the = same made in China valve $14.00. Cured the problem. It is the same valve that came in the kit from = Lancair. It is only rated for 600 PSI. I also checked the parker valves and have = the same PSI rating. This should get some response on the list. " EXPERIMENTAL" Bucky =20 ----- Original Message -----=20 From: Danny =20 To: lml@lancaironline.net=20 Sent: Tuesday, March 27, 2012 8:32 PM Subject: [LML] LNC2 gear diagnosis =20 If any of you have a suggestion, I=92d appreciate your input. =20 On my last flight home, with no early signs of failure, my gear pump was tripping on about every 2 seconds to maintain pressure. I figured I had = a leaky actuator and would have to rebuild it to resolve this; no big = deal. I found one leaking and figured where there is one, there may be more. = So, I=92m rebuilding all of them. But, before doing so, I put a gauge on = the high pressure side of the pump to see if I had internal leaks there too. = What I found was that my pump will only pressurize to about 950 psi (should be ~1200 psi) and then it bleeds down slowly. I tried to adjust the = pressure switch but it made very little difference. To verify the bleeding, I isolated all actuators out of the system except the nose wheel. I put = the gauge on the high pressure side of the NW actuator line, selected gear = up to pressurize the system, and then quickly crawled under the plane to look = at the gauge. It was bleeding down so fast that by the time I got down = there to look at it (~2 sec.), it had already lost about 200 psi and then bled down the rest of the way in about 7 more seconds. So, and here=92s the question, do I have a faulty gear dump valve, a leaky pump, or both? =20 =20 Danny LNC2-360, ~550 hours N 38=B0 43' 25.7" W 77=B0 30' 38.6" =20 ------=_NextPart_000_0073_01CD0D00.6F8EC100 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Thanks = Bucky.=A0 Care to guess where = I’ll be looking for a new valve this = week?

 

Danny

=

LNC2-360, 550 = hours

N 38=B0 43' = 25.7"

W 77=B0 30' = 38.6"

 

From: bucky [mailto:bwhittier@ltol.com] =
Sent: Wednesday, = March 28, 2012 2:24 PM
To: = lml@lancaironline.net
Subject: [LML] Re: LNC2 gear = diagnosis

 

FYI, I had = same problem. I went to the local Ace Hardware, found the same made in = China valve $14.00.

Cured the = problem. It is the same valve that came in the kit from Lancair. It is = only rated for 600 PSI. I also checked the parker valves and have the = same PSI rating. This should get some response on the = list.

" = EXPERIMENTAL"

Bucky<= /font>

 

----- = Original Message -----

From: Danny =

Sent: Tuesday, = March 27, 2012 8:32 PM

Subject: [LML] LNC2 = gear diagnosis

 

If any of you have a suggestion, = I’d appreciate your input.

 

On my last flight home, with no = early signs of failure, my gear pump was tripping on about every 2 = seconds to maintain pressure.=A0 = I figured I had a leaky actuator and would have to rebuild it to = resolve this; no big deal.=A0 I = found one leaking and figured where there is one, there may be = more.=A0 So, I’m = rebuilding all of them.=A0 But, = before doing so, I put a gauge on the high pressure side of the pump to = see if I had internal leaks there too.=A0 What I found was that my pump will = only pressurize to about 950 psi (should be ~1200 psi) and then it = bleeds down slowly.=A0 I tried = to adjust the pressure switch but it made very little difference.=A0 To verify the bleeding, I isolated = all actuators out of the system except the nose wheel.=A0 I put the gauge on the high = pressure side of the NW actuator line, selected gear up to pressurize = the system, and then quickly crawled under the plane to look at the = gauge.=A0 It was bleeding down = so fast that by the time I got down there to look at it (~2 sec.), it = had already lost about 200 psi and then bled down the rest of the way in = about 7 more seconds.=A0 So, and = here’s the question, do I have a faulty gear dump valve, a leaky = pump, or both?

 

 

Danny

LNC2-360, ~550 = hours

N 38=B0 43' = 25.7"

W 77=B0 30' = 38.6"

 

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