X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 17 Oct 2013 10:33:47 -0400 Message-ID: X-Original-Return-Path: <2thman1@gmail.com> Received: from mail-pa0-f50.google.com ([209.85.220.50] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTPS id 6544335 for lml@lancaironline.net; Thu, 17 Oct 2013 10:25:35 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.220.50; envelope-from=2thman1@gmail.com Received: by mail-pa0-f50.google.com with SMTP id fa1so2824787pad.9 for ; Thu, 17 Oct 2013 07:25:01 -0700 (PDT) X-Received: by 10.66.119.202 with SMTP id kw10mr9563462pab.118.1382019901250; Thu, 17 Oct 2013 07:25:01 -0700 (PDT) X-Original-Return-Path: <2thman1@gmail.com> Received: from [192.168.1.121] (c-208-53-115-208.customer.broadstripe.net. [208.53.115.208]) by mx.google.com with ESMTPSA id vz4sm114907365pab.11.1969.12.31.16.00.00 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 17 Oct 2013 07:25:00 -0700 (PDT) References: In-Reply-To: Mime-Version: 1.0 (1.0) Content-Type: multipart/alternative; boundary=Apple-Mail-3A5C4982-E25D-44EA-9442-06A0FC094EF8 X-Original-Message-Id: <5A80CF8A-9580-4070-AB7B-FCC11ED03DF8@gmail.com> Content-Transfer-Encoding: 7bit X-Mailer: iPad Mail (10B329) From: John Barrett <2thman1@gmail.com> Subject: Re: [LML] Hot TITs on X country leg. LIVP X-Original-Date: Thu, 17 Oct 2013 07:24:59 -0700 X-Original-To: Lancair Mailing List --Apple-Mail-3A5C4982-E25D-44EA-9442-06A0FC094EF8 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Fair question, Craig despite the use of the perjorative term "wussy". I'm i= nterested in running my engine fairly conservatively especially while I'm le= arning how to protect it from events that are detrimental to it. I may deci= de to continue running in that percentage of power range or may start pushin= g it up a bit as I get more comfortable. The third attempt to lean went quite a bit beyond what the engine could hand= le evidenced by enough engine roughness that I thought it might quit. I did not leave the settings for more than a second due to the immediate ala= rms and temps I was seeing. Are you saying that if I had left the FF lean f= or some time those temps would start back down? =20 John Sent from my iPad On Oct 16, 2013, at 9:44 PM, Craig Berland wrote: > John, > =20 > Why were you running such a wussy power setting? J > Looks like your TIT=E2=80=99s were high because you never leaned far enoug= h for that power setting. > =20 > Craig Berland > N7VG > =20 > Hello all, > We returned home yesterday from East Coast visits following LOBO mtg in Gr= eenville, SC. > On the way to Greenville after an intermediate stop in NE, we experienced a= n engine problem that I brought to the attention of anyone at LOBO who would= listen and give advice including Neil George from TCM with Allen Barrett ho= oked into the discussion by text and cell phone. =20 > The short story is that when I reached my planned VFR altitude of 15,500 a= nd levelled off I pulled back power but forgot to lean or reset prop for abo= ut ten minutes. Then when I remembered and tried to lean the engine, TITs s= kyrocketed followed by hot EGT readings. See the attached link to the Savvy= analysis graphing of the engine behavior and see if you can come up with wha= t went wrong. When you review the graph, you=E2=80=99ll likely notice that= I tried twice more after the initial leaning to see if I could get lean of p= eak and the engine emphatically let me know it did NOT like what I was doin= g. > I can tell you the problem has been resolved and we flew the airplane arou= nd the country for another week with no repeats. Now I'm interested to know= what LMLers might think caused this because I was totally surprised when I l= earned what the real problem was. > Some of you who were supportive at LOBO already know the answer so let=E2=80= =99s see what others come up with. I have many people to thank for amazing= help in finding and correcting the problem so I want to go on record as one= of the most appreciative people there could be for LOBO, our many vendors a= nd for pilots around the airport in Greenville who gave advice, time, materi= als, loaned tools and so on. > https://www.savvyanalysis.com/flight/402058/a3f088f6-4add-464e-99c7-38fd29= 2628b1 > Best regards, > John Barrett > N31VP >=20 >=20 >=20 --Apple-Mail-3A5C4982-E25D-44EA-9442-06A0FC094EF8 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Fair question, Craig despite the use o= f the perjorative term "wussy".  I'm interested in running my engine fa= irly conservatively especially while I'm learning how to protect it from eve= nts that are detrimental to it.  I may decide to continue running in th= at percentage of power range or may start pushing it up a bit as I get more c= omfortable.

The third attempt to lean went quite a b= it beyond what the engine could handle evidenced by enough engine roughness t= hat I thought it might quit.

I did not leave the se= ttings for more than a second due to the immediate alarms and temps I was se= eing.  Are you saying that if I had left the FF lean for some time thos= e temps would start back down?  

John

Sent from my iPad


On Oct 16, 2013, at 9:4= 4 PM, Craig Berland <cberland@sy= stems3.net> wrote:

John,

=

 

Why were you running such a= wussy power setting? = J

Looks like your TIT=E2=80=99= s were high because you never leaned far enough for that power setting.=

 

Craig Berland

N7VG

 

Hello all,

We returned home yes= terday from East Coast visits following LOBO mtg in Greenville, SC.

On the way to Greenv= ille after an intermediate stop in NE, w= e experienced an engine problem that I brought to the attention of anyone at LOBO who would listen and give advic= e including Neil George from TCM with A= llen Barrett hooked into the discussion by text and cell phone.  

The short story is t= hat when I reached my planned VFR altitude of 15,500 and levelled off I pull= ed back power but forgot to lean or reset prop for about ten minutes.  = Then when I remembered and tried to lean the engine, TITs skyrocketed followed by hot EGT readings.  See the at= tached link to the Savvyanalysis graphing of the engine be= havior and see if you can come up with what went wrong.   When you review the graph, you=E2=80=99ll likely notic= e that I tried twice more after the initial leaning to see if I could get lean of peak and the engine emphatically let me know i= t did  NOT like what I was doing.

I can tell you the p= roblem has been resolved and we flew the airplane around the country for ano= ther week with no repeats.  Now I'= m interested to know what LMLers might think caused this because I was totally surprised when I learned what the real problem was.

Some of you who were suppor= tive at LOBO already know the answer so let=E2=80=99s see what others come u= p with.   I have many people to thank for amazing help in finding and correcting the problem so I want to go on record as one of the most app= reciative people there could be for LOBO, our many vendors and for pilots ar= ound the airport in Greenville who gave advice, time, materials, loaned tool= s and so on.




= --Apple-Mail-3A5C4982-E25D-44EA-9442-06A0FC094EF8--