X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 06 Jul 2008 08:25:54 -0400 Message-ID: X-Original-Return-Path: Received: from imo-d22.mx.aol.com ([205.188.144.208] verified) by logan.com (CommuniGate Pro SMTP 5.2.5) with ESMTP id 3013099 for lml@lancaironline.net; Sat, 05 Jul 2008 19:33:42 -0400 Received: from VTAILJEFF@aol.com by imo-d22.mx.aol.com (mail_out_v38_r9.4.) id q.cf4.3134c8b7 (65098) for ; Sat, 5 Jul 2008 19:33:35 -0400 (EDT) From: VTAILJEFF@aol.com X-Original-Message-ID: X-Original-Date: Sat, 5 Jul 2008 19:33:34 EDT Subject: Re: [LML] Re: Runaway trim X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1215300814" X-Mailer: Unknown sub 34 X-Spam-Flag:NO -------------------------------1215300814 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit John, Thanks for the input. Learning point here. Once it goes bad -- my recommendation is do not keep messing with it in flight -- you could go from bad to worse like the Alaska Airlines MD -80 crew that crashed off of California coast a few years back. Just my 2 cents. Not a real runaway just an intermittent operation. Best regards, Jeff In a message dated 7/5/2008 7:05:26 A.M. Central Daylight Time, jschroeder@perigee.net writes: Jeff - I have had a pitch trim relay go bad. The symptoms: intermittent operation to trim nose down and no problem trimming nose up. It didn't take much to have to hold a lot of forward stick to control it. Fortunately, it started working again after a few minutes ( about the time I was ready to head for the nearest airport.).It happened a couple of times on the trip to TX for Lancair fly-in in October last. Tim said that the Ray Allen relays for the coolie hat trim setup are notoriously bad and that he carried a spare with a connector on the end for quick change-out. We changed to the Mod 2 model (different form/dimensions) and it has worked well ever since. We never did get an uncontrolled input of pitch trim. My data point. John Schroeder LNCE 205 hours On Wed, 02 Jul 2008 23:05:21 -0400, wrote: > With all this discussion about trim, I thought I would add my 2 cents. A IVP can be difficult to fly with inoperative pitch?trim-- too much stick force required. Having said that, in over 1200 hours of flying more than one IVP aircraft, I have never had a trim runaway. I also have never heard of one of these servos running away. If anyone has seen a RAC servo "runaway", speak up now. The more likely scenario is a trim servo that will not work at all. Unless someone can confirm a runwaway servo I think this discussion is much ado about nuthin'. > > Regards, > > Jeff Edwards -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html **************Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut00050000000007) -------------------------------1215300814 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
John,
 
Thanks for the input. Learning point here. Once it goes bad -- my=20 recommendation is do not keep messing with it in flight -- you could go from= bad=20 to worse like the Alaska Airlines MD -80 crew that crashed off of California= =20 coast a few years back. Just my 2 cents. Not a real runaway just an intermit= tent=20 operation.
 
Best regards,
 
Jeff
 
In a message dated 7/5/2008 7:05:26 A.M. Central Daylight Time,=20 jschroeder@perigee.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>Jeff=20 -

I have had a pitch trim relay go bad. The symptoms: intermittent=20 operation to trim nose down and no problem trimming nose up. It didn't tak= e=20 much to have to hold a lot of forward stick to control it. Fortunately, it= =20 started working again after a few minutes ( about the time I was ready to=20= head=20 for the nearest airport.).It happened a couple of times on the trip to TX=20= for=20 Lancair fly-in in October last. Tim said that the Ray Allen relays for the= =20 coolie hat trim setup are notoriously bad and that he carried a spare with= a=20 connector on the end for quick change-out. We changed to the Mod 2 model=20 (different form/dimensions) and it has worked well ever since. We never di= d=20 get an uncontrolled input of pitch trim.

My data point.

John= =20 Schroeder
LNCE 205 hours


On Wed, 02 Jul 2008 23:05:21 -0400,= =20 <vtailjeff@aol.com> wrote:

> With all this discussion abou= t=20 trim, I thought I would add my 2 cents. A IVP can be difficult to fly with= =20 inoperative pitch?trim-- too much stick force required. Having said that,=20= in=20 over 1200 hours of flying more than one IVP aircraft, I have never had a t= rim=20 runaway. I also have never heard of one of these servos running away. If=20 anyone has seen a RAC servo "runaway", speak up now. The more likely scena= rio=20 is a trim servo that will not work at all. Unless someone can confirm a=20 runwaway servo I think this discussion is much ado about=20 nuthin'.
>
> Regards,
>
> Jeff=20 Edwards


--
For archives and unsub=20 http://mail.lancaironline.net:81/lists/lml/List.html



Gas prices getting you=20= down? Search AOL Autos for fuel-efficient used cars.
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