X-Virus-Scanned: clean according to Sophos on Logan.com
Return-Path: <marv@lancaironline.net>
Sender: <marv@lancaironline.net>
To:  lml@lancaironline.net
Date: Wed, 16 Sep 2009 21:54:51 -0400
Message-ID: <redirect-3856761@logan.com>
X-Original-Return-Path: <msteitle@gmail.com>
Received: from mail-fx0-f210.google.com ([209.85.220.210] verified)
  by logan.com (CommuniGate Pro SMTP 5.2.16)
  with ESMTP id 3854143 for lml@lancaironline.net; Tue, 15 Sep 2009 21:50:51 -0400
Received-SPF: pass
 receiver=logan.com; client-ip=209.85.220.210; envelope-from=msteitle@gmail.com
Received: by fxm6 with SMTP id 6so3296780fxm.19
        for <lml@lancaironline.net>; Tue, 15 Sep 2009 18:50:17 -0700 (PDT)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        b=TElxUbtABaCGAksEEPUNjdXzInPr93d0cMvUgSKeDiQO8E6ySu/NsnofUGTyLWQFAd
         Z77DhbpheguILK05W3/u0rZwV2RFnSzmUxOl7QmZZq5DpkI/D4GPWOAMltMmw+Hac9wu
         aqDThsbb/dfU/6DSnFIUgp9gwt2rxG7dVLkYo=
MIME-Version: 1.0
Received: by 10.204.153.202 with SMTP id l10mr6908505bkw.92.1253065817459; 
	Tue, 15 Sep 2009 18:50:17 -0700 (PDT)
In-Reply-To: <list-3852166@logan.com>
References: <list-3852166@logan.com>
X-Original-Date: Tue, 15 Sep 2009 20:50:17 -0500
X-Original-Message-ID: <5cf132c0909151850w14ea24e3va4222c333881a88d@mail.gmail.com>
Subject: Re: [LML] Esco strut rebuild
From: Mark Steitle <msteitle@gmail.com>
X-Original-To: Lancair Mailing List <lml@lancaironline.net>
Content-Type: multipart/alternative; boundary=0015175d0750ee0aa50473a81e9f

--0015175d0750ee0aa50473a81e9f
Content-Type: text/plain; charset=ISO-8859-1

Art,

I hesitate to post my experience as I am not an approved ESCO
repair/overhaul facility.  But here goes anyway.

My ES had developed a very minor shimmy.  Inspection showed no cracks in the
mount that all the bolts were tight, so I decided to disassemble the strut
and inspect the mechanism for damage/wear.  I only have 140 hrs on the
airframe, so I rationalized that it shouldn't have very much, if any, wear.
Since I have my own nitrogen bottle and manifold, I was confident that I
could reassemble and recharge it.

Upon removal of the strut from the mount, I noticed that one of the spring
clips had come off.  While the mounting plates are captivated by the motor
mount, I thought that this was interesting.  I also noticed that there was
approx. 1/16" gap between the two strut mounting plates and the motor
mount.

Upon disassembly of the strutt, I noticed that the oil wasn't clear as I
expected, but kind of milky-grey in color.  Other than that, I didn't find
anything that looked wrong.  O-rings were all in good shape, etc.  So, I
cleaned it up and reassembled it, replacing the old oil with fresh BelRay
30W fork oil.

I fabricated a 1/16" shim, replaced the snap ring, and
reassembled everything, including recharging the strut with nitorgen.

I then tested it on a greased plate and I could tell that the damping
was significantly improved.  A few touch and go's proved that the problem
had been corrected.

What did I do to fix the shimmy?  I really can't say.  My guess is the fork
oil was contaminated.

Mark S.

On Mon, Sep 14, 2009 at 10:58 PM, Art Bertolina
<artbertolina@earthlink.net>wrote:

>  I may need a backup plan to have my nose gear strut
> rebuilt I don't have a commitment from Lancair and am
> looking for options has anyone had someone other than
> Lancair do the work with good result.
> Art
>

--0015175d0750ee0aa50473a81e9f
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div>Art, </div>
<div>=A0</div>
<div>I hesitate to post my experience as I am not an approved ESCO repair/o=
verhaul facility.=A0 But here goes anyway.=A0 </div>
<div>=A0</div>
<div>My ES had developed a very minor shimmy.=A0 Inspection showed no crack=
s in the mount=A0that all the bolts were tight, so I decided to disassemble=
 the strut and inspect the mechanism for damage/wear.=A0 I only have 140 hr=
s on the airframe, so I rationalized that it shouldn&#39;t have very much, =
if any,=A0wear.=A0 Since I have my own nitrogen bottle and manifold, I was =
confident that I could reassemble and recharge it.=A0 </div>

<div>=A0</div>
<div>Upon removal of the strut from the mount, I noticed that one of the sp=
ring clips had come off.=A0 While the mounting plates are captivated by the=
 motor mount, I thought that this was interesting.=A0 I also noticed that t=
here was approx. 1/16&quot; gap between the two strut mounting plates and t=
he motor mount.=A0 </div>

<div>=A0</div>
<div>Upon disassembly of the strutt, I noticed that the oil wasn&#39;t clea=
r as I expected, but kind of milky-grey in color.=A0 Other than that, I did=
n&#39;t find anything that looked wrong.=A0 O-rings were all in good shape,=
 etc.=A0 So, I cleaned it up and reassembled it, replacing the=A0old oil wi=
th=A0fresh BelRay 30W fork oil.</div>

<div>=A0</div>
<div>I fabricated a 1/16&quot; shim, replaced the snap ring, and reassemble=
d=A0everything, including recharging the strut with nitorgen.=A0=A0</div>
<div>=A0</div>
<div>I then tested it on a greased plate and I could tell that the damping =
was=A0significantly improved.=A0 A few touch and go&#39;s proved that the p=
roblem had been corrected.=A0</div>
<div>=A0</div>
<div>What did I do to fix the shimmy?=A0 I really can&#39;t say.=A0 My gues=
s is the fork oil was contaminated.=A0 </div>
<div>=A0</div>
<div>Mark S.<br><br></div>
<div class=3D"gmail_quote">On Mon, Sep 14, 2009 at 10:58 PM, Art Bertolina =
<span dir=3D"ltr">&lt;<a href=3D"mailto:artbertolina@earthlink.net">artbert=
olina@earthlink.net</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0=
px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div bgcolor=3D"#ffffff">
<div><font face=3D"Arial" size=3D"2">I may need a backup plan to have my no=
se gear strut</font></div>
<div><font face=3D"Arial" size=3D"2">rebuilt I don&#39;t have a=A0commitmen=
t from Lancair and am</font></div>
<div><font face=3D"Arial" size=3D"2">looking for options has anyone had som=
eone other than</font></div>
<div><font face=3D"Arial" size=3D"2">Lancair do the work with good result.<=
/font></div>
<div><font face=3D"Arial" size=3D"2">Art</font>=A0=A0</div></div></blockquo=
te></div><br>

--0015175d0750ee0aa50473a81e9f--