X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 18 Mar 2014 11:06:32 -0400 Message-ID: X-Original-Return-Path: Received: from omr-m09.mx.aol.com ([64.12.143.82] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 6785216 for lml@lancaironline.net; Tue, 18 Mar 2014 11:01:24 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.143.82; envelope-from=vtailjeff@aol.com Received: from mtaout-mae02.mx.aol.com (mtaout-mae02.mx.aol.com [172.26.254.142]) by omr-m09.mx.aol.com (Outbound Mail Relay) with ESMTP id 76171701F81DF for ; Tue, 18 Mar 2014 11:00:48 -0400 (EDT) Received: from [10.227.54.189] (unknown [166.205.50.16]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by mtaout-mae02.mx.aol.com (MUA/Third Party Client Interface) with ESMTPSA id BAEE138000083 for ; Tue, 18 Mar 2014 11:00:47 -0400 (EDT) From: Jeff Edwards Content-Type: multipart/alternative; boundary=Apple-Mail-49720218-B23F-4E56-B3C1-906D5E382772 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) Subject: Re: [LML] Re: HOW OLD IS THAT ENGINE X-Original-Message-Id: X-Original-Date: Tue, 18 Mar 2014 11:00:46 -0400 References: In-Reply-To: X-Original-To: Lancair Mailing List X-Mailer: iPad Mail (11B511) x-aol-global-disposition: G x-aol-sid: 3039ac1afe8e53285f9f22be X-AOL-IP: 166.205.50.16 --Apple-Mail-49720218-B23F-4E56-B3C1-906D5E382772 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Peter. You are spot on.... Jeff Sent from my iPad > On Mar 18, 2014, at 9:52 AM, PETER WILLIAMS = wrote: >=20 > hi there >=20 > would love to hear a report of what they have to say about engines "calend= ar-ing out >=20 > peter >=20 > From: rpastusek@htii.com > To: lml@lancaironline.net > CC: ngeorge@continentalmotors.aero > Date: Tue, 18 Mar 2014 13:10:58 +0000 > Subject: [LML] Re: HOW OLD IS THAT ENGINE >=20 > Peter, >=20 > =20 >=20 > A number of Lancair owners/builders are heading to Fairhope, AL on Thursda= y for a maintenance clinic sponsored by Continental Motors. This is just one= of the subjects to be covered by the pros at Continental during this LOBO-s= ponsored 2-day event. Sorry you could not join us there. >=20 > =20 >=20 > FOR ALL: Signup for this event is now closed. Judy and I look forward to s= eeing the 40+ who signed up in Fairhope on Thursday afternoon! Please review= the agenda I sent you for details on event times and places. >=20 > =20 >=20 > Bob Pastusek, >=20 > for LOBO >=20 > -------------------------------------------------- >=20 > HI THERE >=20 > There are TWO numbers suggested for TBO. >=20 > one we are all familiar with, which is the number of hours of operation >=20 > and=20 >=20 > the other we tend to ignore, which is the number of years in service. > i believe that it is twelve years or some similar number of years. >=20 > i personally have ignored this "timing out of the engine" > somewhat to my own peril. >=20 > over the course of my ownership of Large Continental Engines, > i have had three engine that needed overhaul due to ravages of time,= as opposed to wearing out. >=20 > we all know about the "soft" cylinders" on Continental Engines;=20 > That i have lived with and the regular replacement of of a= cylinder of two > but, > the problem that causes engines to be overhauled is Lifters and Camshaft= s. >=20 > and, > Lifters tend to have spalling, (the erosion of the rubbing surfac= e of the cam follower-lifter) which leads to excessive Camshaft wear.=20 > and ironically, this wear is less likely in an engine that has been used a= lot and regularly. or to wit. a high time engine. >=20 > i am intimately familar with this problem because, recently, a cylinder re= moval led to examining lifters which led to having to overhaul an engine tha= t had 850 hours TT. the engine had been installed in the late 90's >=20 > yes, > it was out of Calender time...which i ignored when i bought the air= plane. >=20 > how to prevent this problem, fly a lot; and starting the engine and runnin= g it once a month is not a good solution and may exacerbate the problem. it= is the buildups of moisture and acids in the engine over time that leads to= these failures >=20 > Conversely, >=20 > CapeAir, has over 150 Continental TSIO520's that have FAA approval for a T= BO of 2,500-2,700 hours, because of the high utility of the aircraft. > (yes, that FAA) >=20 > and, the aircraft that were used for fish spotting in the northeast were g= oing 5,000 to 6,000 hours between overhauls; those planes were often flown 1= 0 hours a day, day in and day out. >=20 > so Calendar time matters, for me three time >=20 > peter >=20 >=20 >=20 >=20 > =20 > =20 --Apple-Mail-49720218-B23F-4E56-B3C1-906D5E382772 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
Peter.

You are spot on....

Jeff

Sent from my iPad

On Mar 18, 2014, at 9:52 AM, PETER WILLIAMS <peterpawaviation@hotmail.com> wrote:

hi there

would love to hear a report of what they have to say about engines "calendar-ing out

peter

From: rpastusek@htii.com
To: lml@lancaironline.net
CC: ngeorge@continentalmotors.aero
Date: Tue, 18 Mar 2014 13:10:58 +0000
Subject: [LML] Re: HOW OLD IS THAT ENGINE

Peter,

 

A number of Lancair owners/builders are heading to Fairhope, AL on Thursday for a maintenance clinic sponsored by Continental Motors. This is just one of the subjects to be covered by the pros at Continental during this LOBO-sponsored 2-day event.   Sorry you could not join us there.

 

FOR ALL: Signup for this event is now closed. Judy and I look forward to seeing the 40+ who signed up in Fairhope on Thursday afternoon! Please review the agenda I sent you for details on event times and places.

 

Bob Pastusek,

for LOBO

--------------------------------------------------

HI THERE

There are TWO numbers suggested for TBO.

one  we are all familiar with, which is the number of hours of operation

and

the other we tend to ignore, which is the number of years in service.
     i believe that it is twelve years or some similar number of years.

i personally have ignored this "timing out of the engine"
      somewhat to my own peril.

over the course of my ownership of Large Continental  Engines,
      i have had three engine that needed overhaul due to ravages of time, as opposed to wearing out.

we all know about the "soft" cylinders" on Continental Engines;
                 That i have lived with and the regular replacement of of a cylinder  of two
but,
  the problem that causes engines to be overhauled is Lifters and Camshafts.

and,
         Lifters tend to have spalling, (the erosion of the rubbing surface of the cam follower-lifter) which leads to excessive Camshaft wear.
and ironically, this wear is less likely in an engine that has been used a lot and regularly. or to wit. a high time engine.

i am intimately familar with this problem because, recently, a cylinder removal led to examining lifters which led to having to overhaul an engine that had 850  hours TT. the engine had been installed in the late 90's

yes,
       it was out of Calender time...which i ignored when i bought the airplane.

how to prevent this problem, fly a lot; and starting the engine and running it once a month is not a good solution and may exacerbate the problem.  it is the buildups of moisture and acids in the engine over time that leads to these failures

Conversely,

CapeAir, has over 150 Continental TSIO520's that have FAA approval for a TBO of 2,500-2,700 hours, because of the high utility of the aircraft.
  (yes, that FAA)

and, the aircraft that were used for fish spotting in the northeast were going 5,000 to 6,000 hours between overhauls; those planes were often flown 10 hours a day, day in and day out.

so Calendar time matters, for me three time

peter




                
 

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