X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 03 Jul 2012 03:58:38 -0400 Message-ID: X-Original-Return-Path: Received: from mta31.charter.net ([216.33.127.82] verified) by logan.com (CommuniGate Pro SMTP 5.4.6) with ESMTP id 5635733 for lml@lancaironline.net; Mon, 02 Jul 2012 22:54:46 -0400 Received-SPF: pass receiver=logan.com; client-ip=216.33.127.82; envelope-from=farnsworth@charter.net Received: from imp10 ([10.20.200.15]) by mta31.charter.net (InterMail vM.8.01.05.02 201-2260-151-103-20110920) with ESMTP id <20120703025409.EZBP24708.mta31.charter.net@imp10> for ; Mon, 2 Jul 2012 22:54:09 -0400 Received: from karen305d6aa99 ([96.32.82.24]) by imp10 with smtp.charter.net id Veu91j00D0XV3AQ05eu9Qo; Mon, 02 Jul 2012 22:54:09 -0400 X-Authority-Analysis: v=1.1 cv=u2vu/Ocp0bQ6m2MO0KUY0MS1xIoK39gCmxTU3UkKy94= c=1 sm=1 a=tj7xdHWLCUEA:10 a=yUnIBFQkZM0A:10 a=iJQyNv5OtPD1cCIz+vZOPA==:17 a=Ia-xEzejAAAA:8 a=JwEgpWzITDHtMvHbVzcA:9 a=CjuIK1q_8ugA:10 a=EzXvWhQp4_cA:10 a=yMhMjlubAAAA:8 a=SSmOFEACAAAA:8 a=74qpuFpfncg0m9AJlXIA:9 a=gKO2Hq4RSVkA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=iJQyNv5OtPD1cCIz+vZOPA==:117 From: "Lynn Farnsworth" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] IV-P High altitude performance question X-Original-Date: Mon, 2 Jul 2012 22:54:08 -0400 X-Original-Message-ID: <015601cd58c7$1dd818d0$59884a70$@net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0157_01CD58A5.96C678D0" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ac1YvC3aor5vgYP3TRufk/6FZUQsYgACT03g Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_0157_01CD58A5.96C678D0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Bob, I have large turbos on my TSIO-550 powered Super Legacy. I normally fly with the wastegate controller set to minimum boost which has the capability of giving me 45" of MP at sea level. If I were to set the wastegate controller to maximum (as I do at the Reno Air Races) it will give me 75" of MP at sea level. So, if you have a wastegate controller that you can adjust I would think you could easily have between 30" and 35" of MP available at FL250. Lynn Farnsworth Super Legacy #235 TSIO-550 Powered Race #44 MMO .60 Mach From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Bob Rickard Sent: Monday, July 02, 2012 9:36 PM To: lml@lancaironline.net Subject: [LML] IV-P High altitude performance question Gents - Looking for your inputs. What has been your experience with respect to manifold pressure at altitudes above 20,000 feet? Are you able to keep maximum MAP all the way up, and what is your critical altitude where you start to see a drop? And how high do you fly? And lastly, what cruise settings do you use once you get up there? I paid extra money for upgraded turbo's (from a Mirage, which have bigger turbine wheels) in my engine rebuild, and want to see what my expectations should be based on your experiences. If you happen to have a TSIO-550-X from Barrett that has this modification I would be especially interested in your experience up high. I fly long distance (> 1100 miles non stop) routinely and would love to get in the FL250 range. Thanks for your inputs - Bob Rickard ------=_NextPart_000_0157_01CD58A5.96C678D0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Bob,

I have large turbos on my TSIO-550 powered Super Legacy. = I normally fly with the wastegate controller set to minimum boost which = has the capability of giving me 45” of MP at sea level. If I were to set the = wastegate controller to maximum (as I do at the Reno Air Races) it will give me = 75” of MP at sea level.

So, if you have a wastegate controller that you can = adjust I would think you could easily have between 30” and 35” of MP available at FL250.

Lynn Farnsworth

Super Legacy #235

TSIO-550 Powered

Race #44

MMO .60 Mach

From:= Lancair = Mailing List [mailto:lml@lancaironline.net] On Behalf Of Bob Rickard
Sent: Monday, July 02, 2012 9:36 PM
To: lml@lancaironline.net
Subject: [LML] IV-P High altitude performance = question

Gents -

Looking for your inputs. What has been your = experience with respect to manifold pressure at altitudes above 20,000 feet? =

Are you able to keep maximum MAP all the way up, = and what is your critical altitude where you start to see a drop? =

And how high do you fly?

And lastly, what cruise settings do you use once = you get up there?

I paid extra money for upgraded turbo's (from a = Mirage, which have bigger turbine wheels) in my engine rebuild, and want to see = what my expectations should be based on your experiences. If you happen to = have a TSIO-550-X from Barrett that has this modification I would be especially interested in your experience up high. I fly long distance (> = 1100 miles non stop) routinely and would love to get in the FL250 range. Thanks for your inputs -

Bob = Rickard

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