X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.4.51.81] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 5.0c1) with ESMTP id 677539 for flyrotary@lancaironline.net; Mon, 22 Aug 2005 11:26:47 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.4.51.81; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Mon, 22 Aug 2005 08:26:01 -0700 Message-ID: Received: from 64.4.51.220 by BAY107-DAV9.phx.gbl with DAV; Mon, 22 Aug 2005 15:26:01 +0000 X-Originating-IP: [64.4.51.220] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Injector Sizes...20B Date: Mon, 22 Aug 2005 11:25:57 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0373_01C5A70C.43EB56F0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Mon, 22 Aug 2005 11:25:57 -0400 X-OriginalArrivalTime: 22 Aug 2005 15:26:01.0313 (UTC) FILETIME=[CD81CD10:01C5A72D] This is a multi-part message in MIME format. ------=_NextPart_000_0373_01C5A70C.43EB56F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable BTW, can't remember if you have ever updated your software but since = you are a pioneer user of the 20B version, you can have a freebie update = to the latest version any time you want. There have been a ton of = improvements to it. =20 I appreciate that; Tracy. Mine was updated 11/04 according to the = date on the cover. Should it be updated again? What's involved - = installing a new chip? Does it mean setting the mixture correction = table again? BTW; is the "auto tune" available for the 20B? Does auto-tune use = output from the O2 sensor?=20 I'm still trying to come up with a good answer for the lack of a = good manifold pressure tap on intake systems with no plenum like yours. = Manifold pressure at high throttle will always be sensed as lower than = actual due to the high velocity in the runner (Bernoulli stuff is = really true I'm not sure I understand that it is a problem. As long as the = mixture is set right for a given sensed MAP, what's the difference? I = haven't noted that it is an issue; or is that because I have only run on = the ground. Al It may not be a problem Al. I'll be curious how yours works in = actual operation. Possible problem is that there is limited ability to = correct mixture at the high end of power settings. If the mixture does = not go lean at WOT it isn't a problem. Tracy ------=_NextPart_000_0373_01C5A70C.43EB56F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
 

 

BTW,  can't=20 remember if you have ever updated your software but since you are a = pioneer=20 user of the 20B version, you can have a freebie update to = the latest=20 version any time you want.  There have been a ton of improvements = to=20 it. 

 

I = appreciate that;=20 Tracy.  = Mine was=20 updated 11/04 according to the date on the cover.  Should it be = updated=20 again?  What=92s involved =96 installing a new chip?  Does = it mean=20 setting the mixture correction table again?

 

BTW; is = the =93auto=20 tune=94 available for the 20B?  Does auto-tune use output from = the O2=20 sensor?

 

I'm = still trying=20 to come up with a good answer for the lack of a good manifold = pressure tap=20 on intake systems with no plenum like yours.  Manifold = pressure at=20 high throttle will always be sensed as lower than = actual due to=20 the high velocity in the runner  (Bernoulli stuff is really=20 true

 

I=92m = not sure I=20 understand that it is a problem.  As long as the mixture is set = right=20 for a given sensed MAP, what=92s the difference?  I haven=92t = noted that it=20 is an issue; or is that because I have only run on the=20 ground.

 

Al

 

 It may not be a problem Al.  I'll be curious = how yours=20 works in actual operation.  Possible problem is that there is = limited=20 ability to correct mixture at the high end of power = settings. If the=20 mixture does not go lean at WOT it isn't a = problem.

 

 Tracy

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