X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 30 Jan 2011 10:31:58 -0500 Message-ID: X-Original-Return-Path: Received: from imr-da04.mx.aol.com ([205.188.105.146] verified) by logan.com (CommuniGate Pro SMTP 5.4c2a) with ESMTP id 4831261 for lml@lancaironline.net; Sun, 30 Jan 2011 02:00:41 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.105.146; envelope-from=Sky2high@aol.com Received: from imo-da03.mx.aol.com (imo-da03.mx.aol.com [205.188.169.201]) by imr-da04.mx.aol.com (8.14.1/8.14.1) with ESMTP id p0U700sq012401 for ; Sun, 30 Jan 2011 02:00:00 -0500 Received: from Sky2high@aol.com by imo-da03.mx.aol.com (mail_out_v42.9.) id q.c6b.7e449c1b (45497) for ; Sun, 30 Jan 2011 01:59:56 -0500 (EST) Received: from magic-m21.mail.aol.com (magic-m21.mail.aol.com [172.20.22.194]) by cia-mc08.mx.aol.com (v129.8) with ESMTP id MAILCIAMC084-b1b94d450c6c6f; Sun, 30 Jan 2011 01:59:56 -0500 From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Sun, 30 Jan 2011 01:59:56 EST Subject: Re: [LML] Need advice on improving cooling X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_aaa10.4ab76f41.3a76666c_boundary" X-Mailer: AOL 9.5 sub 5400 X-AOL-IP: 24.15.17.119 X-Spam-Flag:NO X-AOL-SENDER: Sky2high@aol.com --part1_aaa10.4ab76f41.3a76666c_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Bryan, What's the fuel flow during max power (takeoff)? What is your oil temp doing? Grayhawk In a message dated 1/29/2011 10:36:52 P.M. Central Standard Time, vonjet@gmail.com writes: My airplane: Lancair 360, 180hp 360 carburated. I have a plenum to cool and I am feeding the oil cooler with air off the #3 cyl. My chts are high on the ground and takeoff. The oil temp is high on the ground as well. Its to the point where I can't takeoff if I'm on the ground too long. And the hotter days aren't even here yet. Also my carb temp climbs on the ground and pegs at the gauge limit of 127 degrees. I've replaced the probe and the manufacturer seems to think its operating normally. This would make me believe my lower cowling area is getting hot and not enough air flowing out of it. My AP has checked my engine, compression, timing etc and doesn't believe there is any issues with it. The cooler is a 9 vane SW that was new when installed. My plan was to add cowling louvers to the lower cowling on each side below the cyl banks. I would hope this would improve the air movement out the cowling. I read that cht probes could read high if they run close to the exhaust in a tight cowling. Mine do. Also the carb probe is kind of close to the exhaust as well. Not sure if this is my case. All my baffles are in place and properly sealed. Anybody have any advice on where to place these or other ideas that would improve cooling or things to check Bryan --part1_aaa10.4ab76f41.3a76666c_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Bryan,

What's the fuel flow during max power (takeoff)?

What is your oil temp doing?

Grayhawk

In a message dated 1/29/2011 10:36:52 P.M. Central Standard Time,=20 vonjet@gmail.com writes:

My airplane: Lancair 360, 180hp 360 carburated. I have a plenum to co= ol and=20 I am feeding the oil cooler with air off the #3 cyl.

My chts are high on the ground and takeoff. The oil temp is high on= the=20 ground as well. Its to the point where I can't takeoff if I'm on the gro= und=20 too long. And the hotter days aren't even here yet.

Also my carb temp climbs on the ground and pegs at the gauge limit of= 127=20 degrees. I've replaced the probe and the manufacturer seems to think its= =20 operating normally. This would make me believe my lower cowling area is= =20 getting hot and not enough air flowing out of it.

My AP has checked my engine, compression, timing etc and doesn't beli= eve=20 there is any issues with it. The cooler is a 9 vane SW that was new when= =20 installed.

My plan was to add cowling louvers to the lower cowling on each side= below=20 the cyl banks. I would hope this would improve the air movement ou= t the=20 cowling.
I read that cht probes could read high if they run close to= the=20 exhaust in a tight cowling. Mine do. Also the carb probe is kind of clos= e to=20 the exhaust as well. Not sure if this is my case. All my baffles are in= place=20 and properly sealed.

Anybody have any advice on where to place these or other ideas that= would=20 improve cooling or things to check

Bryan

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