X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-spurfowl.atl.sa.earthlink.net ([209.86.89.66] verified) by logan.com (CommuniGate Pro SMTP 6.0.5) with ESMTP id 6299244 for lml@lancaironline.net; Thu, 30 May 2013 23:58:45 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.66; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=Kdb/Jcs3tU0Ul2hG+cJ6JZ3D/xzMLlNLeAYVfU2WYkZAvVfY0a4rBUHXMzD1KFfY; h=Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [71.181.17.133] (helo=[192.168.1.24]) by elasmtp-spurfowl.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1UiGTh-0007hi-HL for lml@lancaironline.net; Thu, 30 May 2013 23:58:09 -0400 From: Colyn Case Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: multipart/alternative; boundary=Apple-Mail-339-823465456 Subject: Re: [LML] Re: Lancair 360 CHT during climb Date: Thu, 30 May 2013 23:58:09 -0400 In-Reply-To: To: "Lancair Mailing List" References: Message-Id: <7950127B-006E-4D76-AADF-401BF67391BE@earthlink.net> X-Mailer: Apple Mail (2.1085) X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da940513a50d19236e9065c34cec029e95cc5350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 71.181.17.133 --Apple-Mail-339-823465456 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 Giles,=20 I don't know what it takes to get CHT's on a 360 in range but the real = question is what does the engine like? GAMI/APS argue that the metal of = the cylinders is getting steadily softer as you go up in temp so they = like to see 380. The engine mfg's tend to list higher numbers and say = that those numbers are considered in the engineering. Personally, I run = my (IV-P TSIO-550) engine hard but I don't like to see more than 380. I think Grayhawk posted a chart a while back that plotted cylinder = strength vs. temp but I can't find it. I did find this article by = Mike Busch in which he says that at 400 degrees the cylinder is half as = strong as when cold and makes a number of other points about CHT's. = http://www.avweb.com/news/savvyaviator/savvy_aviator_59_egt_cht_and_leanin= g_198162-1.html If the engine cooling is adequate, higher CHT's tend to correlate with = higher internal cylinder pressures which can result from timing that is = too far advanced or mixture not rich enough or not lean enough. Your = A&P should be able to address those but make sure he follows = manufacturer's recommendations on the fuel setup. I've seen more than = one mechanic set the fuel flow way below manufacturer's recommendations. = (Too high will ruin your day too). If you have not taken the Advanced Pilot Seminars course on engine = management, I highly recommend it. It's available on line at = www.advancedpilot.com. If the engine cooling is not adequate, then hopefully one of the 360 = guys can tell you how to fix that. On the IV-P engine installation, it = takes some baffle mods and air guides to get it right. Colyn On May 30, 2013, at 11:47 AM, Gary Edwards wrote: Same here. Temperatures routinely over 400. So 380 to 415 is ok to me. =20 Gary LNC2 320 ----- Original Message ----- From: Matt To: lml@lancaironline.net Sent: Thursday, May 30, 2013 7:35 AM Subject: [LML] Re: Lancair 360 CHT during climb My 360 runs that hot and has 1700 hours on the engine. I would say it = is fine. In the summer it can even get that hot in cruise. Not saying it = wouldn't be nice if it ran cooler but again 1700 hours on the engine and = she still flies. I live in Southern California so summer is very hot.=20 Matt Sent from my iPhone On May 30, 2013, at 5:20 AM, steve wrote: > 380 is OK 415 is not, can you richen to bring down under 400? I would = suggest reducing power to keep it under 400 until you fix the problem, = most likely your baffling. Be sure you are sealed.=20 > =20 > =20 > -----Original Message----- > From: Gilles Canese > To: lml > Sent: Wed, May 29, 2013 5:44 pm > Subject: [LML] Lancair 360 CHT during climb >=20 > Hello=20 > I am a new Lancair 360 owner and I have a question about CHT during = climbing At=20 > full power after take off, CHT 's are between 380 and 415 oF, is it = normal for=20 > a 360? >=20 > Thanks for the answers=20 >=20 > Gilles=20 >=20 >=20 > Envoy=E9 de mon iPad > -- > For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html --Apple-Mail-339-823465456 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=iso-8859-1 Giles, 

I don't know what = it takes to get CHT's on a  360 in range but the real question is = what does the engine like?  GAMI/APS argue that the metal of the = cylinders is getting steadily softer as you go up in temp so they like = to see 380.  The engine mfg's tend to list higher numbers and say = that those numbers are considered in the engineering.  Personally, = I run my (IV-P TSIO-550) engine hard but I don't like to see more than = 380.

I think Grayhawk posted a chart a while = back that plotted cylinder strength vs. temp but I can't find it.   =  I did find this article by Mike Busch in which he says that at 400 = degrees the cylinder is half as strong as when cold and makes a number = of other points about CHT's.   http://www.avweb.com/news/savvyaviator/savvy_avia= tor_59_egt_cht_and_leaning_198162-1.html

If = the engine cooling is adequate, higher CHT's tend to correlate with = higher internal cylinder pressures which can result from timing that is = too far advanced or mixture not rich enough or not lean enough.   = Your A&P should be able to address those but make sure he follows = manufacturer's recommendations on the fuel setup.  I've seen more = than one mechanic set the fuel flow way below manufacturer's = recommendations.   (Too high will ruin your day = too).

If you have not taken the Advanced Pilot = Seminars course on engine management,   I highly recommend it. =  It's available on line at www.advancedpilot.com.

If the engine cooling is not adequate, then hopefully = one of the 360 guys can tell you how to fix that.  On the IV-P = engine installation, it takes some baffle mods and air guides to get it = right.

Colyn

On May 30, = 2013, at 11:47 AM, Gary Edwards wrote:

----- = Original Message -----
From: Matt
 Thursday,= May 30, 2013 7:35 AM
Subject: [LML] Re: Lancair 360 CHT = during climb

My 360 runs that hot and has 1700 = hours on the engine.  I would say it is fine. In the summer it can = even get that hot in cruise. Not saying it wouldn't be nice if it ran = cooler but again 1700 hours on the engine and she still flies. I live in = Southern California so summer is very = hot. 

Matt

Sent from my = iPhone

On May 30, 2013, at 5:20 AM, steve <n5276j@aol.com> = wrote:

380 is OK 415 is = not, can you richen to bring down under 400?  I would suggest = reducing power to keep it under 400 until you fix the problem, most = likely your baffling.  Be sure you are = sealed. 
 
 
-----Original Message-----
From: Gilles Canese <gilles.canese@sfr.fr>
To: = lml <lml@lancaironline.net>
Sen= t: Wed, May 29, 2013 5:44 pm
Subject: [LML] Lancair 360 CHT during = climb

Hello=20
I am a new Lancair 360 owner and I have a question about CHT during =
climbing At=20
full power after take off,  CHT 's are between 380 and 415 oF, is it =
normal for=20
a 360?

Thanks for the answers=20

Gilles=20


Envoy=E9 de mon iPad
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