X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.129.170.194] (HELO VIRCOM1.fcdata.private) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTP id 5408351 for flyrotary@lancaironline.net; Tue, 21 Feb 2012 10:54:49 -0500 Received-SPF: none receiver=logan.com; client-ip=64.129.170.194; envelope-from=cbarber@texasattorney.net Received: from FCD-MAIL06.FCDATA.PRIVATE (unverified [172.16.5.23]) by VIRCOM1.fcdata.private (Vircom SMTPRS 5.1.1024.13396) with ESMTP id for ; Tue, 21 Feb 2012 09:53:05 -0600 X-Modus-BlackList: 172.16.5.23=OK;cbarber@texasattorney.net=OK X-Modus-RBL: 172.16.5.23=Excluded X-Modus-Trusted: 172.16.5.23=NO X-Modus-Audit: FALSE;0;0;0 Received: from FCD-MAIL05.FCDATA.PRIVATE ([fe80::809d:a06e:5913:452e]) by FCD-MAIL06.FCDATA.PRIVATE ([fe80::697f:d6aa:b87:78d8%17]) with mapi id 14.01.0355.002; Tue, 21 Feb 2012 09:54:13 -0600 From: Chris Barber To: Rotary motors in aircraft Subject: Throttle Back Bobble Thread-Topic: Throttle Back Bobble Thread-Index: AczwsNCl4hB0saN+RXe2RGviJFHx/w== Date: Tue, 21 Feb 2012 15:53:48 +0000 Message-ID: <2D41F9BF3B5F9842B164AF93214F3D30E5C275C7@FCD-MAIL05.FCDATA.PRIVATE> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [69.148.239.2] Content-Type: multipart/alternative; boundary="_000_2D41F9BF3B5F9842B164AF93214F3D30E5C275C7FCDMAIL05FCDATA_" MIME-Version: 1.0 --_000_2D41F9BF3B5F9842B164AF93214F3D30E5C275C7FCDMAIL05FCDATA_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable When I throttle back on my otherwise smooth running 13b turbo, I tend to ge= t a bobble (miss?) as the engine spins down. I don't seem to have it if I = throttle back very slowly and smoothly, but fast moderate (usual manner) or= quick throttle back produces it. I have noticed this on Lycoming's if thr= ottled back quickly, but obviously not an issue that I have noted in a regu= lar car engine. Just curious if others have had this occur and if so why. The list has been especially quite lately so come on folks, here your chanc= e to shine before I start calling DAR's ;-) Chris Houston --_000_2D41F9BF3B5F9842B164AF93214F3D30E5C275C7FCDMAIL05FCDATA_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

When I throttle back on my otherwise smooth running 13b turbo, I tend to get a bobble (miss?) as the engine spins = down. I don't seem to have it if I throttle back very slowly and smoo= thly, but fast moderate (usual manner) or quick throttle back produces it. I have noticed this on Lyco= ming's if throttled back quickly, but = ;obviously not an issue that I have noted in a regular car engine.&n= bsp;

Just curious if others have had this occur and if so why.

The list has been especially quite lately so come on folks, here your ch= ance to shine before I start calling DAR's = ;-)

Chris

Houston

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