X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Wed, 13 Sep 2006 09:19:59 -0400 Message-ID: X-Original-Return-Path: Received: from [70.62.14.124] (HELO server1.USTEK) by logan.com (CommuniGate Pro SMTP 5.1c.4) with ESMTP id 1400357 for lml@lancaironline.net; Tue, 12 Sep 2006 23:01:57 -0400 Received-SPF: none receiver=logan.com; client-ip=70.62.14.124; envelope-from=lancair@USTEK.COM MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----_=_NextPart_001_01C6D6E1.151D72F8" Subject: RE: [LML] Backfires LOP Content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.5 X-Original-Date: Tue, 12 Sep 2006 23:02:43 -0400 X-Original-Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [LML] Backfires LOP Thread-Index: AcbWvs6JIy5NgCsvR+yjj8ddJPU4WwAITGf4 References: From: "Lancair" X-Original-To: "Lancair Mailing List" This is a multi-part message in MIME format. ------_=_NextPart_001_01C6D6E1.151D72F8 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Phil, =20 I experience the same popping in my TSIO550 powered ES-P. A test pilot = for Columbia told me that it is very common when running LOP and is = aggravated by the low inertia composite prop. The engine has slight = variations of fuel mixture and occasionally the fire in a cylinder goes = out - leading to the sound. He said if running high power LOP to expect = it and get used to it - and it does no harm to the engine. =20 Robert M. Simon ES-P N301ES ________________________________ From: Lancair Mailing List on behalf of phil s Sent: Tue 9/12/2006 6:55 PM To: Lancair Mailing List Subject: [LML] Backfires LOP =09 =09 Anyone had experience with this? Pilot flying our IVP (TSIO550E3B with 4 blade MT) and reports: "Had backfires(?) couple of nights back. Was running lean of peak with =20 temps 1590 at FL150, around -15C, light rain, 29Hg 2500rpm . Happened twice so went rich of peak for remainder of flight with no =20 problems. Any reason come to mind?" 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