X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTP id 4983233 for flyrotary@lancaironline.net; Fri, 13 May 2011 22:32:21 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Return-Path: X-Authority-Analysis: v=1.1 cv=2lq4+qobG88tJFkiXmxSLStFAwyj+PriBwHB+7DDebs= c=1 sm=0 a=wvmIAgwx8J0A:10 a=rPkcCx1H5rrOSfN0dPC7kw==:17 a=3oc9M9_CAAAA:8 a=ayC55rCoAAAA:8 a=Ia-xEzejAAAA:8 a=hXSLYQFp7LmuLRatAmQA:9 a=Pgyg_6KcO9KkYVzxz9UA:7 a=wPNLvfGTeEIA:10 a=U8Ie8EnqySEA:10 a=EzXvWhQp4_cA:10 a=FP4Zxcxad_gtc5Pc:21 a=GC-fiCGV0piDajU6:21 a=ZVFbAd-gr5_WaYCUk-gA:9 a=fRDUas3yZD65pRmLAY4A:7 a=rPkcCx1H5rrOSfN0dPC7kw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 174.110.167.5 Received: from [174.110.167.5] ([174.110.167.5:53488] helo=EdPC) by cdptpa-oedge01.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id EE/88-17273-299EDCD4; Sat, 14 May 2011 02:31:46 +0000 Message-ID: <9A9EDD1AFB6341628F3E602BA0229981@EdPC> From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Engine Tuning Date: Fri, 13 May 2011 22:31:34 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0022_01CC11BD.83E006D0" 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_0022_01CC11BD.83E006D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sorry, Brian - I use a different reference of 0 - 255 which puts 128 = right in the middle. =20 So if you are at zero, I am at 128, if you are at 50, I am at 128 + 50 = =3D 178, if your are at -50 on your reference, I am at 128-50 =3D 78. = Its really the same thing - just using a different reference. So from = your reference my high MCT/MAP value are 172 - 128 =3D 44 in your = reference. So just read me your numbers and I'll translate and compare. Ed From: bktrub@aol.com=20 Sent: Friday, May 13, 2011 9:44 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: Engine Tuning Ed- I'm a little confused- the injector values go from -128 to +128. Do = you mean +127? I'm going to jot down all the values I currently have in = my fuel map and post them here as soon as I get out to the airport = again. 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 = 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 =3D ------=_NextPart_000_0022_01CC11BD.83E006D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Sorry, Brian - I use a different reference of 0 = - 255=20 which puts 128 right in the middle. 
 
So if you are at zero, I am at 128, if you are = at 50, I am=20 at 128 + 50 =3D 178, if your are at -50 on your reference, I am at = 128-50 =3D=20 78.  Its really the same thing - just using a different = reference. So=20 from your reference my high MCT/MAP value are 172 - 128 =3D 44 in your=20 reference.  So just read me your numbers and I'll translate and=20 compare.
 
Ed

From: bktrub@aol.com
Sent: Friday, May 13, 2011 9:44 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: Engine Tuning

Ed- I'm a little confused- the injector values go from -128 to = +128. Do you=20 mean +127? I'm going to jot down all the values I currently have in = my fuel=20 map and post them here as soon as I get out to the airport again.
 
Brian Trubee



-----Original=20 Message-----
From: Ed Anderson <eanderson@carolina.rr.com&g= t;
To:=20 Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent:=20 Fri, May 13, 2011 3:18 pm
Subject: [FlyRotary] Re: Engine = Tuning

 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
=3D=20 ------=_NextPart_000_0022_01CC11BD.83E006D0--