X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-mb02.mx.aol.com ([64.12.207.163] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTP id 4983188 for flyrotary@lancaironline.net; Fri, 13 May 2011 20:33:45 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.207.163; envelope-from=Bktrub@aol.com Received: from imo-da04.mx.aol.com (imo-da04.mx.aol.com [205.188.169.202]) by imr-mb02.mx.aol.com (8.14.1/8.14.1) with ESMTP id p4E0X5Md007005 for ; Fri, 13 May 2011 20:33:05 -0400 Received: from Bktrub@aol.com by imo-da04.mx.aol.com (mail_out_v42.9.) id q.1092.6215450 (43887) for ; Fri, 13 May 2011 20:33:01 -0400 (EDT) Received: from smtprly-de01.mx.aol.com (smtprly-de01.mx.aol.com [205.188.249.168]) by cia-dc04.mx.aol.com (v129.10) with ESMTP id MAILCIADC048-b2324dcdcdb930c; Fri, 13 May 2011 20:33:01 -0400 Received: from Webmail-d122 (webmail-d122.sim.aol.com [205.188.108.131]) by smtprly-de01.mx.aol.com (v129.10) with ESMTP id MAILSMTPRLYDE017-b2324dcdcdb930c; Fri, 13 May 2011 20:32:57 -0400 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: Engine Tuning Date: Fri, 13 May 2011 20:32:57 -0400 X-AOL-IP: 50.46.100.112 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: bktrub@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CDDFE59B1E86BD_1810_653CF_Webmail-d122.sysops.aol.com" X-Mailer: AOL Webmail 33668-STANDARD Received: from 50.46.100.112 by Webmail-d122.sysops.aol.com (205.188.108.131) with HTTP (WebMailUI); Fri, 13 May 2011 20:32:57 -0400 Message-Id: <8CDDFE59B17629D-1810-3AF3F@Webmail-d122.sysops.aol.com> X-Spam-Flag:NO X-AOL-SENDER: Bktrub@aol.com ----------MB_8CDDFE59B1E86BD_1810_653CF_Webmail-d122.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="us-ascii" I'll make a note of looking next time- I think I'm still too lean nearing= WOT. Brian Trubee -----Original Message----- From: Ed Anderson To: Rotary motors in aircraft Sent: Fri, May 13, 2011 3:18 pm Subject: [FlyRotary] Re: Engine Tuning 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 mixt= ure beyond that with the manual mixture control =20 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 idl= e 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 thrott= ling back to about 5100 rpm, and turning the mixture knob to near full ric= h. 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. =20 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. =20 Brian Trubee ----------MB_8CDDFE59B1E86BD_1810_653CF_Webmail-d122.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii"
I'll make a note of looking next time- I think I'm still too lean nea= ring WOT.
 
Brian Trubee



-----Original Message-----
From: Ed Anderson <eanderson@carolina.rr.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Fri, May 13, 2011 3:18 pm
Subject: [FlyRotary] Re: Engine Tuning

 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 mix= ture 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 to= put a few more hours on the airplane. On the ground, I can go from an idl= e 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 thrott= ling back to about 5100 rpm, and turning the mixture knob to near full ric= h. 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 inl= et a bit or restrict the outflow.
 
Brian Trubee
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