X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 17 Apr 2012 16:54:35 -0400 Message-ID: X-Original-Return-Path: Received: from nm7.bullet.mail.bf1.yahoo.com ([98.139.212.166] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with SMTP id 5485199 for lml@lancaironline.net; Tue, 17 Apr 2012 10:32:00 -0400 Received-SPF: none receiver=logan.com; client-ip=98.139.212.166; envelope-from=chris_zavatson@yahoo.com Received: from [98.139.215.141] by nm7.bullet.mail.bf1.yahoo.com with NNFMP; 17 Apr 2012 14:31:21 -0000 Received: from [98.139.212.241] by tm12.bullet.mail.bf1.yahoo.com with NNFMP; 17 Apr 2012 14:31:21 -0000 Received: from [127.0.0.1] by omp1050.mail.bf1.yahoo.com with NNFMP; 17 Apr 2012 14:31:21 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 789979.6084.bm@omp1050.mail.bf1.yahoo.com Received: (qmail 20920 invoked by uid 60001); 17 Apr 2012 14:31:21 -0000 DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=fLOWUsBJRKlMMwNpFqoJ8hKqYtrsslFZnOLlVAsi2XKkt/SyRzL1WMfntd3okQ1o6dwzKyLv0cwdylvrEMKXo9H0OO68FhBcijmh6AHCpO/eE6ckV2QyLLr8DE1QHBHZ10j5A6Ai7IeULwtbDkYwCJk1lLqVcm1HVFc6cDs5qhw=; X-YMail-OSG: znGoLPcVM1mk_ra.PFhLdzSdCJenm82Hh9x73fLkZtCcOi0 aF1RRpoYooXI4ckaFF2lQ1QNA_wt5FQ52cO64jTZd3pRGSN4eQkHiwScmYOt IvP.5cPYlB0UEW7s7n1GAdlEp1QkqgUqbdLSn9KRi_wrJRxUXAzxKnoqB_6E wNCJSNTIvznTmLOPtWTI28UdxIsVKeZ0ZVvYVqUP_8TnA5ElmHD7G6BoG7G1 0_IZFys0s3UVwLko1Lq1hF7MD6p4kPX.ptcVC9iSiAC.OC7hcXr1xBWHqJ5n OezirrlJen.d6.X5xIKeRYPV3vw9HCexv3.FEJjyS99VUzX_SuUEgutDnx3v jcpacpqMA63xlmIVyseFThbkdyEimRCER2N0o_1iH9NsR4aKstypcavOjTy3 7hoqk3Ey3e4JAMMuOi7v90O5akmZ9J4rhqWRGa1Cp.pLTHHR5Rp0zDcZeWoT v4QIDmGzWLAai29dWlVd3iJkEude3LEr_uNOu4W1JIf8DfZDsvzwUAaflGq9 FS1vZ6CryOhCbTS7qgUTuusHN.d40nGcjE7o4Tc5vy6DPl1ku0tpRJP67wxM _wV3Xk4K17pBEfEG__iyKyWjVXLHgRmVkmWkRfI_5y4I6lIhTNuPiCw-- Received: from [99.140.63.246] by web160405.mail.bf1.yahoo.com via HTTP; Tue, 17 Apr 2012 07:31:21 PDT X-Mailer: YahooMailWebService/0.8.117.340979 References: X-Original-Message-ID: <1334673081.96010.YahooMailNeo@web160405.mail.bf1.yahoo.com> X-Original-Date: Tue, 17 Apr 2012 07:31:21 -0700 (PDT) From: Chris Zavatson Reply-To: Chris Zavatson Subject: Re: [LML] Nose Gear Brace LNC2 +Video X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-489199024-1154346194-1334673081=:96010" ---489199024-1154346194-1334673081=:96010 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Tom,=0AThat is scary loose.=A0 That is definitely not normal.=A0 One guess = is that the hydraulic cylinder was putting a load on it while extended.=A0 = The cylinder should bottom out on itself and simply become a rigid bar prev= enting the link from going back over-center.=0A=A0=0AChris Zavatson=0AN91CZ= =0A360std=0Awww.N91CZ.net=0A=A0=0A=0AFrom: Tom McNerney =0ATo: lml@lancaironline.net =0ASent: Tuesday, April 17, 2012 6:52 AM= =0ASubject: [LML] Nose Gear Brace LNC2 +Video=0A=0A=0ALML,=0AMy nose strut,= an old Esco unit, released a bunch of oil during the past year while I hav= e been working on the plane.=A0 So I removed the strut to send off to Lanca= ir for a rebuild.=A0 I would try it myself, but from what I have read the s= eals are not available so I must send it to Lancair.=0A=0AThe Problem:=0ASo= , here is a video of=A0what I found when I removed the strut.=0Ahttp://www.= n54sg.com/video/nose_gear.mp4=0A=0AWith the nose gear installed completely,= no play was noticeable in any of the parts.=A0 But as you can see in the v= ideo, the over center link has tons of play in the center pivot bolt hole.= =A0 The nose strut itself does not allow any lateral play so I am a bit con= fused as to=A0how it elongated the hole.=0A=0ASolution?:=0AThe easy fix wou= ld be $240 worth of Lancair parts, but will it happen again?=0AInsert a bus= hing?=0AI don't think there is enough material to drill the hole for the ne= xt size bolt, although that would be a beautiful fix...=0A=0AMy only other = idea is that there is an alignment mis-match between the top of the nose ge= ar link pivot, and the pivot of the nose gear itself.=A0 During the retract= it=A0puts things in a bind causing premature wear.=A0Thus if I remove all = of the "play" in the link itself, will it retract without binding?=0A=0AOr,= is this totally normal?=0A=0AJust FYI, I didn't build this airplane and it= has about 700 airframe hours.=0A=0ATom McNerney=0Awww.N54SG.com ---489199024-1154346194-1334673081=:96010 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Tom,
That is scary loose.=   That is definitely not normal.  One guess is that the hydraulic= cylinder was putting a load on it while extended.  The cylinder shoul= d bottom out on itself and simply become a rigid bar preventing the link fr= om going back over-center.
 
Chris Zavatson
N91CZ
360std
 

From:= Tom McNerney <dude= wanarace@yahoo.com>
To: lml@lancaironline.net
Sent: Tuesday, April 17, 2012 6:52 AM
Subject: [LML] Nose Gear Brace LNC2 +Video

LML,
My nose strut, an old Esco unit, rele= ased a bunch of oil during the past year while I have been working on the p= lane.  So I removed the strut to send off to Lancair for a rebuild.&nb= sp; I would try it myself, but from what I have read the seals are not avai= lable so I must send it to Lancair.
 
The Problem:
So, here is a video of what I found when I removed the strut.
http://www.n54sg.com/video/nose_gear.mp4
 
With the nose gear installed c= ompletely, no play was noticeable in any of the parts.  But as you can see in= the video, the over center link has tons of play in the center pivot bolt = hole.  The nose strut itself does not allow any lateral play so I am a= bit confused as to how it elongated the hole.
 
Solution?:
The easy fix would be $240 worth of Lancair parts, but will it happen = again?
Insert a bushing?
I don't think there is enough material to drill the hole for the next = size bolt, although that would be a beautiful fix...
 
My only other idea is that there is an alignment mi= s-match between the top of the nose gear link pivot, and the = pivot of the nose gear itself.  During the retract it puts things= in a bind causing premature wear. Thus if I remove all of the "play" = in the link itself, will it retract without binding?
 
Or, is this totally normal?
 
Just FYI, I didn't build this airplane and it has about 700 airframe h= ours.
 
Tom McNerney


---489199024-1154346194-1334673081=:96010--