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, 10 Oct 2007 21:30:07 -0400
Message-ID: <redirect-2380418@logan.com>
X-Original-Return-Path: <kyrilian_av@yahoo.com>
Received: from web53704.mail.re2.yahoo.com ([206.190.37.25] verified)
  by logan.com (CommuniGate Pro SMTP 5.1.12)
  with SMTP id 2380424 for lml@lancaironline.net; Wed, 10 Oct 2007 21:17:40 -0400
Received-SPF: none
 receiver=logan.com; client-ip=206.190.37.25; envelope-from=kyrilian_av@yahoo.com
Received: (qmail 86368 invoked by uid 60001); 11 Oct 2007 01:16:59 -0000
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
  s=s1024; d=yahoo.com;
  h=X-YMail-OSG:Received:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID;
  b=xJnFvy8eyPX+zP883DAjpxf/aG1j0yG0tTZB+ksiIACDg9JVnO9Vz3uvuO02vkXGBDVBEZ8ylVgtpAfywcXsLz1Xt6N7Ajy5SCG2AQ2I3si5mbI0eBSonjuc6ot4Pja2O2l4oxfsFr85YaLhxbpdQ0lPeXYUKIkLFDxTu6XUfgU=;
X-YMail-OSG: VsSY4NEVM1mpQbfgDhEKsTpOa742Pdr7umh_GUqJBmcVXHoELxks8rPbaZke28ZKW1ZQJwbUe4B8Vp1JMkuc5SJTGhiosvXCxXATky87D1LTny3DPk6igBpsT1hpVw--
Received: from [67.155.104.35] by web53704.mail.re2.yahoo.com via HTTP; Wed, 10 Oct 2007 18:16:59 PDT
X-Original-Date: Wed, 10 Oct 2007 18:16:59 -0700 (PDT)
From: Kyrilian Dyer <kyrilian_av@yahoo.com>
Subject: Re: [LML] Legacy Engine/Prop/Speed/ Vibration?
X-Original-To: Lancair Mailing List <lml@lancaironline.net>
In-Reply-To: <list-2379076@logan.com>
MIME-Version: 1.0
Content-Type: multipart/alternative; boundary="0-1001949678-1192065419=:85397"
Content-Transfer-Encoding: 8bit
X-Original-Message-ID: <151746.85397.qm@web53704.mail.re2.yahoo.com>

--0-1001949678-1192065419=:85397
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit

Erik,
Have you checked to see if there's play in any of the control surfaces?  I seem to recall some folks having lash in the elevator after a certain amount of flight time.  If the elevators are balanced they shouldn't go divergent, but may move if there's play.  They could be driven by fuselage-transmitted engine/prop vibes or aerodynamics (either unsteady prop wake or a bit of flutter).  Any slight slop in the hinges would then progressively get larger, and vibrations would get worse.

Without knowing the cause, driving is probably a good choice...

 Cheers,
- Kyrilian


asw20747@aol.com wrote: *  At 165kts and greater, on three successive flights, we felt a distinct cyclical type vibration setting up.  It's a bit hard to describe in words but it does NOT seem to be a steady              vibration (like a gear door) but seems to feel almost like a prop out of balance.
 *  Without touching the power or prop we can make the vibration go away by raising the nose and slowing < 165kts.
 *  When we do get the vibration > 165kts..... you can mitigate it somewhat by increasing prop RPM.  The vibration is still there but not has bad.

<snip>

*  The issue is serious enough, in my mind, that I am DRIVING tomorrow from San Diego to Las Vegas.......and I HATE driving;)))
 

       
---------------------------------
Be a better Globetrotter. Get better travel answers from someone who knows.
Yahoo! Answers - Check it out.
--0-1001949678-1192065419=:85397
Content-Type: text/html; charset=iso-8859-1
Content-Transfer-Encoding: 8bit

Erik,<br>Have you checked to see if there's play in any of the control surfaces?&nbsp; I seem to recall some folks having lash in the elevator after a certain amount of flight time.&nbsp; If the elevators are balanced they shouldn't go divergent, but may move if there's play.&nbsp; They could be driven by fuselage-transmitted engine/prop vibes or aerodynamics (either unsteady prop wake or a bit of flutter).&nbsp; Any slight slop in the hinges would then progressively get larger, and vibrations would get worse.<br><br>Without knowing the cause, driving is probably a good choice...<br><br>&nbsp;Cheers,<br>- Kyrilian<br><br><br><b><i>asw20747@aol.com</i></b> wrote:<blockquote class="replbq" style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"> <font face="Arial, Helvetica, sans-serif">*&nbsp; At 165kts and greater, on three successive flights, we felt a distinct <u>cyclical</u> type vibration setting up.&nbsp; It's a bit hard to describe in
 words but it does NOT seem to be a steady&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; vibration (like a gear door) but seems to feel almost like a prop out of balance.<br> *&nbsp; Without touching the power or prop we can make the vibration go away by raising the nose and slowing &lt; 165kts.<br> *&nbsp; When we do get the vibration &gt; 165kts..... you can mitigate it somewhat by increasing prop RPM.&nbsp; The vibration is still there but not has bad.<br><br>&lt;snip&gt;<br><br>*&nbsp; The issue is serious enough, in my mind, that I am DRIVING tomorrow from San Diego to Las Vegas.......and I HATE driving;)))<br> <br></font></blockquote><p>&#32;
      <hr size=1>Be a better Globetrotter. <a href="http://us.rd.yahoo.com/evt=48254/*http://answers.yahoo.com/dir/_ylc=X3oDMTI5MGx2aThyBF9TAzIxMTU1MDAzNTIEX3MDMzk2NTQ1MTAzBHNlYwNCQUJwaWxsYXJfTklfMzYwBHNsawNQcm9kdWN0X3F1ZXN0aW9uX3BhZ2U-?link=list&sid=396545469">Get better travel answers </a>from someone who knows.<br>Yahoo! Answers - Check it out.


--0-1001949678-1192065419=:85397--