X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 07 Jun 2007 11:55:54 -0400 Message-ID: X-Original-Return-Path: Received: from [68.98.211.24] (HELO systems3.net) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2089397 for lml@lancaironline.net; Thu, 07 Jun 2007 11:37:56 -0400 Received-SPF: none receiver=logan.com; client-ip=68.98.211.24; envelope-from=cberland@systems3.net Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C7A919.B97E20D0" X-MimeOLE: Produced By Microsoft Exchange V6.5 Subject: [LML] Re: Hickman's Accident: NTSB Probable Cause Report X-Original-Date: Thu, 7 Jun 2007 08:37:13 -0700 X-Original-Message-ID: <87C33F695961494D886EB3B6C8A476512F38B3@s3server.Systems3.local> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [LML] Re: Hickman's Accident: NTSB Probable Cause Report Thread-Index: AcepEOmWEQCknn+JR/qBaiZhFk7MKgAB4P8w From: "Craig Berland" X-Original-To: "Lancair Mail List" This is a multi-part message in MIME format. ------_=_NextPart_001_01C7A919.B97E20D0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable While the turbo takes care of airport altitude changes, the ambient temp is still a factor. The difference in required fuel flow between 50 deg F and 150 deg F manifold air temperature is 10%. Sooo, if the required take-off fuel flow at 50 deg F is 45 gph, then the required fuel flow at 150 deg F is 41.5 gph. Pushing the "rich" take-off fuel too far will cause a problem on hot days. Adding the high boost will further the bad cause. This is just information, I have no opinions what so ever on the accident. Craig Berland ________________ =20 Colyn, 48-49 gph without high boost. I will check the answer to your second question=20 when I return but my recollection is about 1-2 gph-- not much. Jeff """ Jeff said, Trial and error but I found it to be around 48-49 gph =20 Jeff, did you mean 48-49 is about the place where the engine begins to=20 complain or is the place where if you add high boost then it complains. ? =20 Do you know how much high boost adds to fuel flow when wide open? e.g. I=20 have mine setup for 45gph without boost. =20 Colyn """ ------_=_NextPart_001_01C7A919.B97E20D0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
While the turbo takes care of airport = altitude changes,=20 the ambient temp is still a factor.  The difference in required = fuel flow=20 between 50 deg F and 150 deg F manifold air temperature is 10%.  = Sooo,=20 if the required take-off fuel flow at 50 deg F is 45 gph, = then the=20 required fuel flow at 150 deg F is 41.5 gph. =20 Pushing the "rich" take-off fuel too far will cause a problem on hot = days. =20 Adding the high boost will further the bad cause.  This is just=20 information, I have no opinions what so ever on the=20 accident.
Craig Berland
________________
 
 Colyn,   48-49 gph without high boost. = I will=20 check the answer to your second question
when I return but my = recollection=20 is about 1-2 gph-- not much.   =  Jeff


"""
Jeff said,=20 Trial and error but I found it to be around 48-49 gph
  =
Jeff, did=20 you mean 48-49 is about the place where the engine begins to =
complain or is=20 the place where if you add high boost then it complains. = ?   =20
Do you know how much high boost adds to fuel flow when wide=20 open?    e.g. I
have mine setup for 45gph without=20 boost.
 
Colyn
"""
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