X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao104.cox.net ([68.230.241.42] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3688147 for flyrotary@lancaironline.net; Fri, 19 Jun 2009 09:17:53 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.42; envelope-from=alventures@cox.net Received: from fed1rmimpo01.cox.net ([70.169.32.71]) by fed1rmmtao104.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20090619131716.FITK17135.fed1rmmtao104.cox.net@fed1rmimpo01.cox.net> for ; Fri, 19 Jun 2009 09:17:16 -0400 Received: from BigAl ([72.192.135.181]) by fed1rmimpo01.cox.net with bizsmtp id 5pHF1c0073uzsQg03pHFGj; Fri, 19 Jun 2009 09:17:15 -0400 X-VR-Score: 0.00 X-Authority-Analysis: v=1.0 c=1 a=kiymHTCw2l0A:10 a=_-VGrOaekFj17DkBVNIA:9 a=fFnVtuRGBLSYk4ShBkoJyM4-uZoA:4 a=i_KlXthzDTWI_N5eE74A:9 a=7yLLGnCVmhrMMoa7wBQA:7 a=Ic8JzWZ1_LdoJbT7IG4WNqb3i8wA:4 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] 295cc vs 495 cc was [FlyRotary] responses to responses, not developing full power Date: Fri, 19 Jun 2009 06:17:19 -0800 Message-ID: <6EA1DDE318A94F109F7C35D9C94EAE6E@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000C_01C9F0A5.99A61BC0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6838 In-Reply-To: Importance: Normal Thread-Index: Acnw0S7AWWKJQmLeQ3CrkfQUAHCqwwAFyFgg X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_000C_01C9F0A5.99A61BC0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable When you switch the primary injectors off and secondary injectors on - the EC2 is still providing the same pulse duration = (assuming engine manifold pressure, etc are the same) for the almost twice as = large secondary injectors as it did for the smaller primary injectors. Ergo, = you are feeding the engine almost twice the fuel (for the same engine conditions) as you did when on the primary injectors. The engine is = choking on too much fuel. =20 =20 Unless, of course, you have made the mode 6 adjustment to compensate for = the difference in the flow rates - or will mode 6 not handle such a big differential. =20 Al G ------=_NextPart_000_000C_01C9F0A5.99A61BC0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

When you switch the primary injectors off and secondary

injectors on - the EC2 is still providing the same pulse duration = (assuming

engine manifold pressure, etc are the same) for the almost twice as = large

secondary injectors as it did for the smaller primary injectors. Ergo, = you

are feeding the engine almost twice the fuel (for the same = engine

conditions) as you did when on the primary injectors.  The engine is = choking

on too much fuel. 

 <= /font>

Unless, of = course, you have made the mode 6 adjustment to compensate for the difference in the = flow rates – or will mode 6 not handle such a big = differential.

 <= /font>

Al = G

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