X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 10 Oct 2009 08:12:24 -0400 Message-ID: X-Original-Return-Path: Received: from QMTA12.emeryville.ca.mail.comcast.net ([76.96.27.227] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3881263 for lml@lancaironline.net; Fri, 09 Oct 2009 22:34:08 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.27.227; envelope-from=ijheizer@comcast.net Received: from OMTA20.emeryville.ca.mail.comcast.net ([76.96.30.87]) by QMTA12.emeryville.ca.mail.comcast.net with comcast id qqFF1c0041smiN4ACqZZBK; Sat, 10 Oct 2009 02:33:33 +0000 Received: from sz0109.ev.mail.comcast.net ([76.96.26.169]) by OMTA20.emeryville.ca.mail.comcast.net with comcast id qqZY1c0093eudEs8gqZYNa; Sat, 10 Oct 2009 02:33:33 +0000 X-Original-Date: Sat, 10 Oct 2009 02:33:32 +0000 (UTC) From: Isaac Heizer X-Original-To: lml@lancaironline.net X-Original-Message-ID: <551735638.2378651255142012815.JavaMail.root@sz0109a.emeryville.ca.mail.comcast.net> Subject: RE: [LML] Re: LOP MP setting for TSIO-550E MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_124305_489404064.1255142012814" X-Originating-IP: [216.226.38.2] X-Mailer: Zimbra 5.0.18_GA_3076.RHEL5_64 (ZimbraWebClient - FF3.0 (Win)/5.0.18_GA_3076.RHEL5_64) ------=_Part_124305_489404064.1255142012814 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable George Braly said:=20 I would suggest you go out and fly the airplane in cruise, at 17.5 gph and = 30=E2=80=9D=20 Then reset the engine to 17.5 gph and 32=E2=80=9D.=20 Fly it each way for about 20 minutes at the same altitude. Note the speeds = carefully with each configuration with the airplane fully stable.=20 Then land and download the data and plot it up in EGView or some suitable s= oftware tool.=20 Then study the differences.=20 I can tell you with some confidence that the parameters that matter to engi= ne durability will be improved with one of those settings - - verses the ot= her.=20 ---------------=20 Unfortunately, i'm away from home for awhile and can't do the flight. And, = believe it or not, the G900X doesn't support downloading flight or engine d= ata. The GAMI lean tests were a real pain.=20 But...i'm going to guess the 32" setting is easier on the engine than the 3= 0" setting (with FF at 17.5GPH and RPM at 2500 in both cases). Because "lea= ner is better" and the temps should be cooler at 32". And if the horsepower= is truly the same, the airspeed should be the same in both cases.=20 If my guess is right, should i conclude that when LOP on the TSIO-550E in c= ruise, one should use FF to pick desired horsepower, and raise MP as much a= s practical? But not so high that the engine "complains". And not higher th= an TCM recommends for continuous use (which i think is 32").=20 On the other hand, if I'm wrong i really missed the boat after taking the a= dvancedpilot engine management course.=20 ------=_Part_124305_489404064.1255142012814 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <= div style=3D'font-family: Arial; font-size: 12pt; color: #000000'>George Br= aly said:

= I would suggest you go out and fly the airplane in cruise, at 17.5 gph and 30=E2=80=9D

Then reset the en= gine to 17.5 gph and 32=E2=80=9D.

Fly it each way f= or about 20 minutes at the same altitude. Note the speeds carefully with each configuration with the airplane fully stable= .

Then land and dow= nload the data and plot it up in EGView or some suitable software tool.

Then study the di= fferences.

I can tell you wi= th some confidence that the parameters that matter to engine durability will be improved with one of those settings - - verses the other.

---------------
Unfortunately, i'm away from home for awhil= e and can't do the flight. And, believe it or not, the G900X doesn't = support downloading flight or engine data. The GAMI lean tests were a= real pain.

But...i'm going to guess the 32" setting is easier on th= e engine than the 30" setting (with FF at 17.5GPH and RPM at 2500 in both c= ases). Because "leaner is better" and the temps should be cooler at 3= 2". And if the horsepower is truly the same, the airspeed should be t= he same in both cases.

If my guess is right, should i conclude that = when LOP on the TSIO-550E in cruise, one should use FF to pick desired hors= epower, and raise MP as much as practical? But not so high that the e= ngine "complains". And not higher than TCM recommends for continuous = use (which i think is 32").

On the other hand, if I'm wrong i really= missed the boat after taking the advancedpilot engine management course.
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