Return-Path: Received: from boa.wrtc.com ([63.160.192.2] verified) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP id 2589788 for flyrotary@lancaironline.net; Mon, 22 Sep 2003 20:22:43 -0400 Received: from dan (Bismarck-3810-a-14.westriv.com [69.26.31.16]) by boa.wrtc.com (8.9.3+Sun/8.9.3) with SMTP id SAA26961 for ; Mon, 22 Sep 2003 18:18:52 -0600 (MDT) Message-ID: <004001c38169$2985f560$101f1a45@dan> From: "Leonard Garceau" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: EC2 in-flight timing adjustment. Date: Mon, 22 Sep 2003 19:25:15 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_003D_01C3813F.4029A660" 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 This is a multi-part message in MIME format. ------=_NextPart_000_003D_01C3813F.4029A660 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Tuning my autoconversion: I'm tuning my air/fuel and ignition for flight on my autoconversion (v-6 = maxima). check out www.techedge.com and lookup the air/fuel meter = setup. I have one and so far it is outstanding. Quick, accurate and = reads the mixture almost instantly. It will make tuning easy. Leonard ----- Original Message -----=20 From: Tommy James=20 To: Rotary motors in aircraft=20 Sent: Sunday, September 21, 2003 12:12 PM Subject: [FlyRotary] Re: EC2 in-flight timing adjustment. Tracy, More questions stirred up here...:0) 1. Will best power timing be different than best economy? 2. What would you guess the EGTs to be at best power mixture and = 5000rpm 3. Is 5-6 bars on the RWS mixture meter the best power range? Thanks, Tommy <>< 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_003D_01C3813F.4029A660 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Tuning my autoconversion:

I'm tuning my air/fuel and ignition for flight on my = autoconversion (v-6 maxima). check out www.techedge.com and lookup the = air/fuel=20 meter setup. I have one and so far it is outstanding. Quick, = accurate and reads the mixture almost instantly. It will make = tuning=20 easy.

Leonard

----- Original Message -----
From:=20 Tommy = James=20
To: Rotary motors in = aircraft

Sent: Sunday, September 21, = 2003 12:12=20 PM

Subject: [FlyRotary] Re: EC2 = in-flight=20 timing adjustment.

Tracy, More questions = stirred up=20 here...:0)

1. Will best power timing = be=20 different than best economy?

2. What would you guess = the EGTs to=20 be at best power mixture and 5000rpm

3. Is 5-6 bars on the RWS = mixture=20 meter the best power range?

Thanks,

Tommy <><

1. =20 Establish normal cruise and get the plane *perfectly* trimmed in zero=20 turbulance air.

2. Lean engine for best economy. = This is=20 about 1525 - 1550 EGT on mine. This varies with altitude = &=20 powersetting.

3. Put EC2 in mode 8 and advance timing = 1 step=20 (1.875 degrees) and note change in rpm (a digital tach w/ <=3D = 10 rpm=20 resolution is 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=20 17 - 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=20 rpm > 3600.

I think mine is advanced 1 or 2 steps from = default=20 setting.

Tracy

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