X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 31 May 2013 10:46:31 -0400 Message-ID: X-Original-Return-Path: Received: from blu0-omc3-s34.blu0.hotmail.com ([65.55.116.109] verified) by logan.com (CommuniGate Pro SMTP 6.0.5) with ESMTP id 6300034 for lml@lancaironline.net; Fri, 31 May 2013 10:39:22 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.55.116.109; envelope-from=gary21sn@hotmail.com Received: from BLU172-DS17 ([65.55.116.74]) by blu0-omc3-s34.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Fri, 31 May 2013 07:38:50 -0700 X-TMN: [OcqCAMtn72xihSGTBYgOGhOB/I5WiZo+] X-Originating-Email: [gary21sn@hotmail.com] X-Original-Message-ID: X-Original-Return-Path: gary21sn@hotmail.com From: "Gary Edwards" X-Original-To: "Lancair Mailing List" References: Subject: Re: Lancair 360 CHT during climb X-Original-Date: Fri, 31 May 2013 07:38:49 -0700 In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0234_01CE5DD1.E421C710" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V10.50.0008.2100 Seal-Send-Time: Fri, 31 May 2013 07:38:49 -0700 X-OriginalArrivalTime: 31 May 2013 14:38:50.0121 (UTC) FILETIME=[90BC6F90:01CE5E0C] This is a multi-part message in MIME format. ------=_NextPart_000_0234_01CE5DD1.E421C710 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable What do you mean "sensible people"? Gary ----- Original Message -----=20 From: Sky2high@aol.com=20 To: lml@lancaironline.net=20 Sent: Friday, May 31, 2013 6:21 AM Subject: [LML] Re: Lancair 360 CHT during climb Lyc says 500F is max for short term hi power, 400F is max recommended = for continuous operation. Sensible people often suggest that lower = temps lead to longer engine life. 400F or so for short term, 350F or so = for continuous.=20 Grayhawk In a message dated 5/31/2013 6:36:04 A.M. Central Daylight Time, = gary21sn@hotmail.com writes: What is the cylinder temperature red line on Lycoming 320/360's? Gary ----- Original Message -----=20 From: Colyn Case=20 To: Lancair Mailing List=20 Sent: Thursday, May 30, 2013 8:58 PM Subject: [LML] Re: Lancair 360 CHT during climb 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_leani= ng_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. 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 -----Original Message----- From: Gilles Canese = > To: lml > Sent: 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 -- For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html ------=_NextPart_000_0234_01CE5DD1.E421C710 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
What do you mean "sensible people"?
 
Gary
----- Original Message -----
Sent: Friday, May 31, 2013 6:21 = AM
Subject: [LML] Re: Lancair 360 = CHT during=20 climb

Lyc says 500F is max for short term hi power, 400F is max=20 recommended for continuous operation.   Sensible people = often suggest that lower temps lead to longer engine life.  = 400F or=20 so for short term, 350F or so for continuous. 
 
Grayhawk
 
In a message dated 5/31/2013 6:36:04 A.M. Central Daylight Time,=20 gary21sn@hotmail.com writes:
What is the cylinder temperature red line on Lycoming = 320/360's?
 
Gary
----- Original Message ----- =
From: Colyn Case
To: Lancair Mailing List =
Sent: Thursday, May 30, = 2013 8:58=20 PM
Subject: [LML] Re: Lancair = 360 CHT=20 during climb

Giles, =20

I don't know what it takes to get CHT's on a  360 in = range but=20 the real question is what does the engine like?  GAMI/APS = argue that=20 the metal of the cylinders is getting steadily softer as you go up = in temp=20 so they like to see 380.  The engine mfg's tend to list = higher=20 numbers and say that those numbers are considered in the = engineering.=20  Personally, I run my (IV-P TSIO-550) engine hard but I don't = like to=20 see more than 380.

I think Grayhawk posted a chart a while back that plotted = cylinder=20 strength vs. temp but I can't find it.    I did find = this=20 article by Mike Busch in which he says that at 400 degrees the = cylinder is=20 half as strong as when cold and makes a number of other points = about=20 CHT's.   http://www.avweb.com/news/savvyaviator/savvy_av= iator_59_egt_cht_and_leaning_198162-1.html

If the engine cooling is adequate, higher CHT's tend to = correlate=20 with higher internal cylinder pressures which can result from = timing that=20 is too far advanced or mixture not rich enough or not lean enough. =  =20 Your A&P should be able to address those but make sure he = follows=20 manufacturer's recommendations on the fuel setup.  I've seen = more=20 than one mechanic set the fuel flow way below manufacturer's=20 recommendations.   (Too high will ruin your day too).

If you have not taken the Advanced Pilot Seminars course on = engine=20 management,   I highly recommend it.  It's available on = line at=20 www.advancedpilot.com.

If the engine cooling is not adequate, then hopefully one of = the 360=20 guys can tell you how to fix that.  On the IV-P engine = installation,=20 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=20 is ok to me.
 
Gary
LNC2 320
----- Original Message = -----
From: Matt
To: lml@lancaironline.net
Sent: Thursday, May 30, = 2013 7:35=20 AM
Subject: [LML] Re: Lancair 360 = CHT=20 during climb

My 360 runs that hot and has 1700 hours on the engine. =  I=20 would say it is fine. In the summer it can even get that hot in = cruise.=20 Not saying it wouldn't be nice if it ran cooler but again 1700 = hours on=20 the engine and she still flies. I live in Southern California so = summer=20 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=20 400?  I would suggest reducing power to keep it under 400 = until=20 you fix the problem, most likely your baffling.  Be sure = you are=20 sealed. 
 
 
-----Original=20 Message-----
From: Gilles Canese <gilles.canese@sfr.fr>
To: = lml <lml@lancaironline.net>
Se= nt:=20 Wed, May 29, 2013 5:44 pm
Subject: [LML] Lancair 360 CHT = during=20 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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