X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.122] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTP id 4983039 for flyrotary@lancaironline.net; Fri, 13 May 2011 18:19:40 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.122; envelope-from=eanderson@carolina.rr.com Return-Path: X-Authority-Analysis: v=1.1 cv=aeMH4JcVOnVr0LmJAzqEvfnmJyuaZufWdlng4HTRGCk= c=1 sm=0 a=rPkcCx1H5rrOSfN0dPC7kw==:17 a=3oc9M9_CAAAA:8 a=r53wi8G47KW_XLqMbJkA:9 a=wPNLvfGTeEIA:10 a=U8Ie8EnqySEA:10 a=-LRUDAGqGJEmTwfD:21 a=rP_qedn2Co_HekTa:21 a=Ia-xEzejAAAA:8 a=PTRhw2R544vrnhBi9HEA:9 a=obg7mAk-jPOV6Xa5nlQA:7 a=EzXvWhQp4_cA:10 a=rPkcCx1H5rrOSfN0dPC7kw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 174.110.167.5 Received: from [174.110.167.5] ([174.110.167.5:52816] helo=EdPC) by cdptpa-oedge02.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 9F/FA-03893-A5EADCD4; Fri, 13 May 2011 22:19:06 +0000 Message-ID: From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Engine Tuning Date: Fri, 13 May 2011 18:18:54 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000D_01CC119A.37876E40" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 This is a multi-part message in MIME format. ------=_NextPart_000_000D_01CC119A.37876E40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Brian, what values do you have in your fuel map around 90-105? I have = values of 172 for WOT and at times (cool OAT) I have to enrichen the = mixture beyond that with the manual mixture control Ed From: bktrub@aol.com=20 Sent: Friday, May 13, 2011 5:35 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Engine Tuning Since the weather has been cooperating lately, I've had the opportunity = to put a few more hours on the airplane. On the ground, I can go from an = idle up to full throttle and the engine will be smooth. But when I take = off, it seems that as soon as I'm up a few hundred feet off the runway, = I get hellacious backfiring at full throttle. I can mitigate it a bit by = throttling back to about 5100 rpm, and turning the mixture knob to near = full rich. It's getting to be a bit nerve wracking to take off thinking = I've got it smoothed out and then get a series of hand grenades going = off under my butt. I'm thinking that I'm still running too lean up at = map address 106 or so. So, I go into the edit page and richen up the = mixture around those addresses. I think I'm creeping up on smooth full = throttle running. The good news is that my coolant runs at 175 degrees and oil at less- so = the cooling is more than effective, I just need to close up my air inlet = a bit or restrict the outflow. Brian Trubee ------=_NextPart_000_000D_01CC119A.37876E40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 Brian, what values do you have in your = fuel map=20 around 90-105?   I have values of 172 for WOT and at times = (cool OAT)=20 I have to enrichen the mixture beyond that with the manual mixture=20 control
 
Ed

Sent: Friday, May 13, 2011 5:35 PM
Subject: [FlyRotary] Engine Tuning


Since the weather has been cooperating lately, I've had the = opportunity=20 to put a few more hours on the airplane. On the ground, I can go from an = idle up=20 to full throttle and the engine will be smooth. But when I take off, it = seems=20 that as soon as I'm up a few hundred feet off the runway, I get = hellacious=20 backfiring at full throttle. I can mitigate it a bit by throttling back = to about=20 5100 rpm, and turning the mixture knob to near full rich. It's getting = to be a=20 bit nerve wracking to take off thinking I've got it smoothed out and = then get a=20 series of hand grenades going off under my butt. I'm thinking that I'm = still=20 running too lean up at map address 106 or so. So, I go into the edit = page and=20 richen up the mixture around those addresses. I think I'm creeping up on = smooth=20 full throttle running.
 
The good news is that my coolant runs at 175 degrees and oil at = less- so=20 the cooling is more than effective, I just need to close up my air inlet = a bit=20 or restrict the outflow.
 
Brian Trubee
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