Return-Path: Received: from [65.54.169.133] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP id 2586565 for flyrotary@lancaironline.net; Sat, 20 Sep 2003 00:21:14 -0400 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 19 Sep 2003 21:21:14 -0700 Received: from 65.137.51.142 by bay3-dav103.bay3.hotmail.com with DAV; Sat, 20 Sep 2003 04:21:13 +0000 X-Originating-IP: [65.137.51.142] X-Originating-Email: [lors01@msn.com] Reply-To: "Tracy Crook" From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: EC2 in-flight timing adjustment. Date: Sat, 20 Sep 2003 00:23:28 -0400 Organization: Real World Solutions Inc. MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0089_01C37F0D.69E62A20" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Message-ID: X-OriginalArrivalTime: 20 Sep 2003 04:21:14.0037 (UTC) FILETIME=[A0D9FE50:01C37F2E] This is a multi-part message in MIME format. ------=_NextPart_000_0089_01C37F0D.69E62A20 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Friday, September 19, 2003 10:43 PM Subject: [FlyRotary] Re: Turbomania Hi Bill, No, I have not. I have thought about it on the ground, but always = seem to forget in the air. I guess part of it is that I think I have = found good timing for power on takeoff and climb and just don't want to = mess with that. But, now that I think of it I presume that I could mess = with the timing on the "B" controller and leave the "A" controller where = it is, Hummmm. =20 I think I will check with Tracy to make certain screwing with the = timing on one processor won't screw it up on the other. I am 99% = certain - buuuttttt want to be sure. Ed Anderson Yep, A & B controllers are 100% independent on programming. The proceedure I use in-flight is: 1. Establish normal cruise and get the plane *perfectly* trimmed in = zero turbulance air. 2. Lean engine for best economy. This is about 1525 - 1550 EGT on = mine. This varies with altitude & powersetting. 3. Put EC2 in mode 8 and advance timing 1 step (1.875 degrees) and = note change in rpm (a digital tach w/ <=3D 10 rpm resolution is a must). 4. If you got an increase at step 3, repeat until there is no = increase in rpm. 5. Retard the timing 1 step. Factors to keep in mind. My cruise is typically at 17 - 18" MAP which = is below the manifold pressure advance point (this point is adjustable = in Mode 6). The timing is advanced by 5.625 degrees more than nominal = timing which is typically 20 - 23 deg BTDC at rpm > 3600. =20 I think mine is advanced 1 or 2 steps from default setting. Tracy ------=_NextPart_000_0089_01C37F0D.69E62A20 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
----- Original Message -----
From:=20 Ed=20 Anderson
Sent: Friday, September 19, = 2003 10:43=20 PM
Subject: [FlyRotary] Re: = Turbomania

Hi Bill,
 
    No, I have not.  I have = thought=20 about it on the ground, but always seem to forget in the air.  I = guess=20 part of it is that I think I have found good timing for power on = takeoff and=20 climb and just don't want to mess with that.  But, now that I = think of it=20 I presume that I could mess with the timing on the "B" controller and = leave=20 the "A" controller where it is, Hummmm. 
 
I think I will check with Tracy to make certain = screwing=20 with the timing on one processor won't screw it up on the other.  = I am=20 99% certain - buuuttttt want to be sure.
 
Ed Anderson
 
Yep, A & B controllers are 100% independent on = programming.
 
The proceedure I use in-flight is:
 
1.  Establish normal cruise and get the plane = *perfectly* trimmed in zero turbulance air.
2.  Lean engine for best economy.  This = is about=20 1525 - 1550 EGT on mine.  This varies with altitude &=20 powersetting.
3.  Put EC2 in mode 8 and advance timing 1 = step (1.875=20 degrees) and note change in rpm (a digital tach w/ <=3D 10 rpm = resolution is=20 a must).
4.  If you got an increase at step 3, repeat = until=20 there is no increase in rpm.
5.  Retard the timing 1 step.
 
Factors to keep in mind.  My cruise is = typically at 17=20 - 18" MAP which is below the manifold pressure advance point (this=20 point is adjustable in Mode 6).  The timing is advanced by = 5.625=20 degrees more than nominal timing which is typically 20 - 23 deg BTDC = at rpm=20 > 3600. 
 
I think mine is advanced 1 or 2 steps from default = setting.
 
Tracy
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