Return-Path: Sender: (Marvin Kaye) To: lml Date: Sun, 05 Jan 2003 18:56:05 -0500 Message-ID: X-Original-Return-Path: Received: from tomts8-srv.bellnexxia.net ([209.226.175.52] verified) by logan.com (CommuniGate Pro SMTP 4.0.3) with ESMTP id 1945601 for lml@lancaironline.net; Sun, 05 Jan 2003 17:26:47 -0500 Received: from a ([67.69.100.71]) by tomts8-srv.bellnexxia.net (InterMail vM.5.01.04.19 201-253-122-122-119-20020516) with SMTP id <20030105222645.DRPW5637.tomts8-srv.bellnexxia.net@a> for ; Sun, 5 Jan 2003 17:26:45 -0500 X-Original-Message-ID: <007c01c2b50a$7185f4e0$47644543@a> From: "Ian B. Crowe" X-Original-To: "Lancair Mailing List" Subject: Front oleo castering X-Original-Date: Sun, 5 Jan 2003 17:33:17 -0500 Organization: Corvi Trade Consultants Inc MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0079_01C2B4E0.886CC960" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_0079_01C2B4E0.886CC960 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable I have had my front oleo rebuilt by Lancair and it appears that it has = excessive "Stiction" that is a combination of inherent stickiness and = friction. This manifests itself in a tendency to overshoot the required = rudder inputs to maintain a straight line on landing and take off. Has = anyone had any problems here? If so what did you do to solve it or = improve it. Today it would not caster at all on a lightly snow covered = surface. All it did was to skid over the snow in the straight ahead = position. The oleo was depressed enough to be out of the self centring = device. I have also found that the amount of pressure in the oleo is critical to = ensure that the oleo comes out of the self centring feature when fully = loaded by the weight of the plane, yet at the same time has enough = pressure to firstly maintain an adequate extension and subsequently to = engage the self centring device. Another problem we have had is the fact that with the right tank about = 1/4 full and the left tank full the amount of aileron input required to = keep the wings level was quite high, even with the trim fully applied to = raise the left wing. I understand that we should not reach the = situation with one tank full on the pilot's side and the other side = empty. Has anyone done the same thing and found the aileron control = forces to be high? It flew well with both tanks full so I am inclined = to think that the situation should be avoided by better handling of the = side to side fuel consumption. Ian Crowe ------=_NextPart_000_0079_01C2B4E0.886CC960 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

I have had my front oleo rebuilt by Lancair and it = appears=20 that it has excessive "Stiction" that is a combination of = inherent=20 stickiness and friction. This manifests itself in a tendency to = overshoot=20 the required rudder inputs to maintain a straight line on landing and = take off.=20 Has anyone had any problems here? If so what did you do to solve = it or=20 improve it. Today it would not caster at all on a lightly snow = covered=20 surface. All it did was to skid over the snow in the straight = ahead=20 position. The oleo was depressed enough to be out of the self = centring=20 device.

I have also found that the amount of pressure in the = oleo is=20 critical to ensure that the oleo comes out of the self centring feature = when=20 fully loaded by the weight of the plane, yet at the same time has = enough=20 pressure to firstly maintain an adequate extension and subsequently to = engage=20 the self centring device.

Another problem we have had is the fact that with = the right=20 tank about 1/4 full and the left tank full the amount of aileron = input=20 required to keep the wings level was quite high, even with the trim = fully=20 applied to raise the left wing. I understand that we should not = reach the=20 situation with one tank full on the pilot's side and the other side = empty. =20 Has anyone done the same thing and found the aileron control forces to = be=20 high? It flew well with both tanks full so I am inclined to think = that the=20 situation should be avoided by better handling of the side to side fuel=20 consumption.

Ian Crowe

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