X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 23 Nov 2008 09:55:11 -0500 Message-ID: X-Original-Return-Path: Received: from fmailhost03.isp.att.net ([207.115.11.53] verified) by logan.com (CommuniGate Pro SMTP 5.2.10) with ESMTP id 3312833 for lml@lancaironline.net; Sat, 22 Nov 2008 19:31:19 -0500 Received-SPF: pass receiver=logan.com; client-ip=207.115.11.53; envelope-from=donaldgordon@bellsouth.net Received: from blueskycomputer (adsl-210-57-150.mco.bellsouth.net[68.210.57.150]) by isp.att.net (frfwmhc03) with SMTP id <20081123003044H03002677ue>; Sun, 23 Nov 2008 00:30:44 +0000 X-Originating-IP: [68.210.57.150] From: X-Original-To: "'Lancair Mailing List'" Subject: RE: [LML] 320 Carb Heat Box X-Original-Date: Sat, 22 Nov 2008 19:30:35 -0500 X-Original-Message-ID: <016801c94d02$b6db52b0$6401a8c0@BlueSkyComputer> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0169_01C94CD8.CE054AB0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6838 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 Thread-Index: AclMMMq4Ft1pfRm6SGSGP75mTgPh1wA0LDsg Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0169_01C94CD8.CE054AB0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Larry, =20 Yes, I have had carb ice in my Lancair 320 with a Lycoming O-320-E2D. I = do have carb heat and it did, after awhile, remove the carb ice. OAT at = the time was upper 30's with some visible moisture during flight. First = hint of carb ice during cruise was an imbalance of my EGTs followed by a very = slow drop in manifold pressure and finally some engine roughness. With 1300 hours on the aircraft, I have encountered carb ice twice (that I know = of), once while IFR on top, the other while VFR. All encounters were during = the winter months in the southeast U.S. =20 Don -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = Larry Henney Sent: Friday, November 21, 2008 6:28 PM To: lml@lancaironline.net Subject: [LML] 320 Carb Heat Box Guys, =20 I've got a friend looking at his 320 carb heat intake box. The question = is; Does lower cowl air have enough heat in it to prevent carb ice? He is considering muffing an exhaust pipe to make sure the heated air is adequately hot. =20 =20 I was wondering if others have ever had carb ice with the standard = Lancair carb heat box (using just lower cowl hot (warm) air)? =20 =20 We'd appreciate your thoughts. =20 Larry Henney ------=_NextPart_000_0169_01C94CD8.CE054AB0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Larry,
 
Yes, I=20 have had carb ice in my Lancair 320 with a Lycoming O-320-E2D.  I = do have=20 carb heat and it did, after awhile, remove the carb ice.  OAT at = the time=20 was upper 30's with some visible moisture during flight.  First = hint of=20 carb ice during cruise was an imbalance of my EGTs followed by a = very slow=20 drop in manifold pressure and finally some engine roughness.  With = 1300=20 hours on the aircraft, I have encountered carb ice twice (that I know = of), once=20 while IFR on top, the other while VFR.  All encounters were = during the=20 winter months in the southeast U.S.
 
Don
-----Original Message-----
From: = Lancair Mailing=20 List [mailto:lml@lancaironline.net] On Behalf Of Larry=20 Henney
Sent: Friday, November 21, 2008 6:28 PM
To: = lml@lancaironline.net
Subject: [LML] 320 Carb Heat=20 Box

Guys,
 
I've = got a friend=20 looking at his 320 carb heat intake box.  The question is; Does = lower=20 cowl air have enough heat in it to prevent carb ice?  He is = considering=20 muffing an exhaust pipe to make sure the heated air is adequately = hot. =20
 
I = was wondering if=20 others have ever had carb ice with the standard Lancair carb heat box = (using=20 just lower cowl hot (warm) air)? 
 
We'd = appreciate=20 your thoughts.
 
Larry=20 Henney
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