X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 10 Dec 2008 00:50:58 -0500 Message-ID: X-Original-Return-Path: Received: from wind.imbris.com ([216.18.130.7] verified) by logan.com (CommuniGate Pro SMTP 5.2.10) with ESMTPS id 3350634 for lml@lancaironline.net; Tue, 09 Dec 2008 10:06:29 -0500 Received-SPF: none receiver=logan.com; client-ip=216.18.130.7; envelope-from=brent@regandesigns.com Received: from [192.168.1.144] (207-170-226-178.static.twtelecom.net [207.170.226.178]) (authenticated bits=0) by wind.imbris.com (8.14.2/8.12.11.S) with ESMTP id mB9F5jJl054469 for ; Tue, 9 Dec 2008 07:05:50 -0800 (PST) (envelope-from brent@regandesigns.com) X-Original-Message-ID: <493E8945.5000207@regandesigns.com> X-Original-Date: Tue, 09 Dec 2008 07:05:41 -0800 From: Brent Regan User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: Re: Nose tire mystery Content-Type: multipart/alternative; boundary="------------030604010605070507070806" This is a multi-part message in MIME format. --------------030604010605070507070806 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Jim, There is a pin and "V" slot that centers the nose tire when fully extended. Put the AC on jacks and verify that when the nose gear extends it properly "cams" to the centerline. Try turning the nose tire when fully extended. I know of one pilot who taxied over a rough spot on the ramp while turning. The action forced the centering mechanism to be misaligned to the point that the nose gear jammed in the well and would not extend. He made the evening news but was otherwise unharmed in the "nose gear up" landing. I am thinking you have a milder case of the same problem and that the alignment pin jammed in the slot due to the high turning moment and then released when there was sufficient braking action to cause enough down force on the nose gear. This may have also straightened out your turning mechanism so you want to try to turn the nose gear while extended to be sure there is minimal play and no hysteresis. Regards Brent Regan --------------030604010605070507070806 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Jim,

There is a pin and "V" slot that centers the nose tire when fully extended. Put the AC on jacks and verify that when the nose gear extends it properly "cams" to the centerline. Try turning the nose tire when fully extended.

I know of one pilot who taxied over a rough spot on the ramp while turning. The action forced the centering mechanism to be misaligned to the point that the nose gear jammed in the well and would not extend. He made the evening news but was otherwise unharmed in the "nose gear up" landing.

I am thinking you have a milder case of the same problem and that the alignment pin jammed in the slot due to the high turning moment and then released when there was sufficient braking action to cause enough down force on the nose gear. This may have also straightened out your turning mechanism so you want to try to turn the nose gear while extended to be sure there is minimal play and no hysteresis.

Regards
Brent Regan
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