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Return-Path: Received: from imf16aec.mail.bellsouth.net ([205.152.59.64] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 606619 for flyrotary@lancaironline.net; Thu, 13 Jan 2005 20:33:33 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.64; envelope-from=sqpilot@bellsouth.net Received: from [209.214.44.64] by imf16aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050114013252.ZZKZ1992.imf16aec.mail.bellsouth.net@[209.214.44.64]> for ; Thu, 13 Jan 2005 20:32:52 -0500 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [265.6.11]); Thu, 13 Jan 2005 19:32:42 -0600 Message-ID: <001001c4f9d8$edfc65d0$402cd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: I got the power ! Date: Thu, 13 Jan 2005 19:32:37 -0600 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=======AVGMAIL-41E7213A09C4=======" --=======AVGMAIL-41E7213A09C4======= Content-Type: multipart/alternative; boundary="----=_NextPart_000_000D_01C4F9A6.A334CB50" ------=_NextPart_000_000D_01C4F9A6.A334CB50 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable MessageThanks for the info, Rusty.....I think I'm getting very close to = being able to use and understand this thing well enough to have a good = running engine. Paul Conner ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Thursday, January 13, 2005 2:20 PM Subject: [FlyRotary] Re: I got the power ! If I recall correctly, the air/fuel mixture number was somewhere around 13... Make any sense?=20 Yep, sure does. The theoretical ideal air fuel ratio (AFR) is 14.7, = but that doesn't mean much to us. Any number lower than that is = richer, and of course higher numbers are leaner. Max power mixture is = richer than 14.7, and I'd suspect it might be close to your 13, but I'd = also bet that it depends on lots of other things as well. During lean = cruise, you will likely see numbers way up in the teens. =20 My old FD had a Power FC computer, and a wideband O2 sensor. I had it = tuned to around 11 AFR for full throttle, full boost, around 14-15 for = normal cruise, and I could even see the max of 20 on very light throttle = cruise. 11 AFR is pretty rich, and is needed to avoid detonation with = the turbos, but it shouldn't be needed for a NA engine. Bottom line is = that you'll have to do some testing to finish setting it up. =20 Rusty =20 -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.6.11 - Release Date: 1/12/2005 ------=_NextPart_000_000D_01C4F9A6.A334CB50 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Message

Thanks for the info, Rusty.....I think = I'm getting=20 very close to being able to use and understand this thing well enough to = have a=20 good running engine. Paul Conner

----- Original Message -----

From:=20 Russell=20 Duffy

To: Rotary motors in = aircraft

Sent: Thursday, January 13, = 2005 2:20=20 PM

Subject: [FlyRotary] Re: I got = the power=20 !

If I recall correctly, the
air/fuel mixture = number was=20 somewhere around 13... Make any sense?

Yep, = sure does. =20 The theoretical ideal air fuel ratio (AFR) is 14.7, but that doesn't = mean much=20 to us. Any number lower than that is richer, and of = course=20 higher numbers are leaner. Max power mixture = is richer than=20 14.7, and I'd suspect it might be close to your 13, but I'd also bet = that it=20 depends on lots of other things as well. During lean = cruise, you=20 will likely see numbers way up in the = teens.

My old = FD had a Power=20 FC computer, and a wideband O2 sensor. I had it tuned to around = 11 AFR=20 for full throttle, full boost, around 14-15 for normal cruise, and I = could=20 even see the max of 20 on very light throttle cruise. 11 = AFR is=20 pretty rich, and is needed to avoid detonation with the turbos, but it = shouldn't be needed for a NA engine. Bottom line is that you'll = have to=20 do some testing to finish setting it = up.

Rusty

No virus found in this incoming message.
Checked by AVG=20 Anti-Virus.
Version: 7.0.300 / Virus Database: 265.6.11 - Release = Date:=20 1/12/2005
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