Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Sun, 15 Aug 2004 11:19:41 -0400 Message-ID: X-Original-Return-Path: Received: from tomts5-srv.bellnexxia.net ([209.226.175.25] verified) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 365502 for lml@lancaironline.net; Sun, 15 Aug 2004 11:05:22 -0400 Received-SPF: none receiver=logan.com; client-ip=209.226.175.25; envelope-from=ian.crowe@sympatico.ca Received: from crowe ([69.159.72.178]) by tomts5-srv.bellnexxia.net (InterMail vM.5.01.06.10 201-253-122-130-110-20040306) with SMTP id <20040815150451.GTVG18869.tomts5-srv.bellnexxia.net@crowe> for ; Sun, 15 Aug 2004 11:04:51 -0400 X-Original-Message-ID: <004901c482d9$42509d30$6721fea9@crowe> From: "Ian B. Crowe" X-Original-To: "Lancair Mailing List" Subject: LNC2 Nose gear door X-Original-Date: Sun, 15 Aug 2004 11:05:09 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0046_01C482B7.BADEB4C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1437 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 This is a multi-part message in MIME format. ------=_NextPart_000_0046_01C482B7.BADEB4C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I recently did a rework on my doors to get a better fit and now I am = left with well fitting doors but a slow operation on the RHS inner door. It works perfectly on the jacks but in the air it seem to lag the other = doors by a considerable time. I have noticed that when operating the = gear on the jacks that the pressure builds slowly to the maximim. This = maximum is not reached, as you would expect, until the last door is = closed. I have pressure gauges on the system for high/low circuits so I can see = what happens there but I suspect that the sequence valve which operates = the door, once the gear is up, is maybe the culprit. In the case of the = main gear there is a fine line on the adjustment to avoid trying to push = the top skin off the wing. The valve when under pressure requires more = than hand pressure on the operating plunger to work. I think that I = have it set too fine and that it does not open fully causing the door to = lag.the other doors. This may be the problem with the nose gear doors. = Also the fact that all is well on the ground leads me to think that = aerodynamic loading maybe a contributory factor in both the nose and = main doors. Maybe the answer for the nose gear is to remove the door and with the = a/c on the jacks operate the gear whilst watching what goes on in the = nose gear well withe sequence valve operation. I am going to look at the sequence valve tomorrow, Monday and if I have = anything to report I will post it on the list. Oh by the way I have the outback gear and the hydraulically operated = inner gear doors. I will pursue this line of investigatin on the sequence valve but = somebody should contact Lancair, I am sure there is an answer in = Redmond, if you can get hold of Tim Ong, he is a fount of knowledge. Ian Crowe C-FKRO ------=_NextPart_000_0046_01C482B7.BADEB4C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I recently did a rework on my doors to = get a better=20 fit and now I am left with well fitting doors but a slow operation on = the RHS=20 inner door.

It works perfectly on the jacks but in the air it seem to lag the = other=20 doors by a considerable time. I have noticed that when = operating the=20 gear on the jacks that the pressure builds slowly to the maximim. = This=20 maximum is not reached, as you would expect, until the last door is = closed.

I have pressure gauges on the system for high/low circuits so I can = see=20 what happens there but I suspect that the sequence valve which operates = the=20 door, once the gear is up, is maybe the culprit. In the case = of the=20 main gear there is a fine line on the adjustment to avoid trying to push = the top=20 skin off the wing. The valve when under pressure requires more = than hand=20 pressure on the operating plunger to work. I think that I have it = set too=20 fine and that it does not open fully causing the door to lag.the other=20 doors. This may be the problem with the nose gear doors. = Also the=20 fact that all is well on the ground leads me to think that aerodynamic = loading=20 maybe a contributory factor in both the nose and main doors.

Maybe the answer for the nose gear is to remove the door and with = the a/c=20 on the jacks operate the gear whilst watching what goes on in the nose = gear well=20 withe sequence valve operation.

I am going to look at the sequence valve tomorrow, Monday and if I = have=20 anything to report I will post it on the list.

Oh by the way I have the outback gear and the hydraulically = operated inner=20 gear doors.

I will pursue this line of investigatin on the sequence = valve but=20 somebody should contact Lancair, I am sure there is an answer in = Redmond, if you=20 can get hold of Tim Ong, he is a fount of knowledge.

Ian Crowe

C-FKRO

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