X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao107.cox.net ([68.230.241.39] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3888721 for flyrotary@lancaironline.net; Fri, 16 Oct 2009 18:34:26 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.39; envelope-from=alventures@cox.net Received: from fed1rmimpo03.cox.net ([70.169.32.75]) by fed1rmmtao107.cox.net (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20091016223352.SJTZ21470.fed1rmmtao107.cox.net@fed1rmimpo03.cox.net> for ; Fri, 16 Oct 2009 18:33:52 -0400 Received: from BigAl ([72.192.133.78]) by fed1rmimpo03.cox.net with bizsmtp id taZr1c0071hf1Cg04aZrZm; Fri, 16 Oct 2009 18:33:51 -0400 X-VR-Score: -50.00 X-Authority-Analysis: v=1.0 c=1 a=eUYrJpLGLCIA:10 a=ejMyiK2m6AQSvFuuEGkA:9 a=0iQ_fWZ3qk2vBQwiODkA:7 a=wJFznp3JFx4IGdQfnrqDYmHcUp0A:4 a=OCcnyNaFk74kHjG0KFYA:7 a=6ytKkabS6Yd1v6hCjGEqFBf_vdMA:4 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Stoich A/F Ratio?? : [FlyRotary] Re: where's the missing power? Date: Fri, 16 Oct 2009 15:34:29 -0800 Message-ID: <80815E35CA974C1C90E365B07687EA07@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01CA4E76.26C4F570" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6838 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 In-Reply-To: Importance: Normal Thread-Index: AcpOmZbFBukhRJXHT2eGznNIQtl0DAAG+lQg This is a multi-part message in MIME format. ------=_NextPart_000_0007_01CA4E76.26C4F570 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable My question was: if the MAP table gives 14.7 A/F ratio with the manual = knob in the 12:00 oclock position, what would be the most likely A/F ratio = with the knob all the way clockwise? Does it have the capability of = richening it to 12.65?? The short answer is "Yes, and beyond". =20 Now I have more questions. I went over and copied down the information = in my MAP table today. I was surprised to learn that the manifold = pressures for all addresses from 0 to 63 were set to Zero. I expected to find = actual manifold pressures in there. =20 My understanding is that in that range of the table it chooses the table address based on rpm. Once you tune it in that range the correction = numbers will likely not be 0.0. For my setup it never uses cells below about = 17-18, or above about 47-48 where the rpm and MAP fall outside the range; so = those cells are 0. =20 I also discovered that staging was not set. At least, there is never an astrick showing up above the V in Volt. I assume I can not change the staging unless the engine is running??? All this was done with the = engine not running if that matters for any of the data. You will not see an * unless you are in track mode with the engine = running. The stage point can only be set with the engine running, and at the MAP where you want it to stage. =20 My Renesis engine has not been torn down, so it still has the factory nominal timing setting. Does anyone know what this setting is?? The = timing adjustment setting on the EC-2 is set to Zero. Due to some of the = recent discussions on timing, I am thinking that may have been a factor in not making as much power as others when static running. I have been only = able to get 53-5400 rpm, while others could get over 6000. Set the timing as instructed in the EC2 manual. Assuming you have = 2.85:1 redrive you should have over 6000 static rpm (I'd say closer to 7000); = if 2.17:1 you're about right.=20 =20 Hope this helps, =20 Al G =20 =20 ------=_NextPart_000_0007_01CA4E76.26C4F570 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

My question was: if the = MAP table gives 14.7 A/F ratio with the manual knob in the 12:00 oclock position, = what would be the most likely A/F ratio with the knob all the way = clockwise? Does it have the capability of richening it to 12.65??

The short answer is “Yes, = and beyond”.

Now I have more questions. I went over = and copied down the information in my MAP table today. I was surprised = to learn that the manifold pressures for all addresses from 0 to 63 were = set to Zero. I expected to find actual manifold pressures in there. =

My understanding is that in that = range of the table it chooses the table address based on rpm. Once you = tune it in that range the correction numbers will likely not be 0.0. For = my setup it never uses cells below about 17-18, or above about 47-48 where the = rpm and MAP fall outside = the range; so those cells are 0.

I also discovered that staging was not = set. At least, there is never an astrick showing up above the V in Volt. I = assume I can not change the staging unless the engine is running??? = All this was done with the engine not running if that matters for any of the = data.

You will not see an * unless you = are in track mode with the engine running. The stage point can only be = set with the engine running, and at the MAP where you want it to stage.

My Renesis engine has not been torn down, so = it still has the factory nominal timing setting. Does anyone know what this setting is?? The timing adjustment setting on the EC-2 is set to Zero. Due to some of the recent discussions on timing, I am = thinking that may have been a factor in not making as much power as others when static running. I have been only able to get 53-5400 rpm, while others = could get over 6000.

Set the timing as instructed in = the EC2 manual. Assuming you have 2.85:1 redrive you should have over 6000 = static rpm (I’d say closer to 7000); if 2.17:1 you’re about right. =

Hope this = helps,

Al G

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