X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=O/h7h11W c=1 sm=1 tr=0 a=8T60Sf7EBCf2EUcbCIdfiw==:117 a=x7bEGLp0ZPQA:10 a=JBFolyDoGHsA:10 a=hrdC1p5twJAA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=HZJGGiqLAAAA:8 a=7g1VtSJxAAAA:8 a=J8VsfAO7am50f7BEBdYA:9 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=clPTvaOYeYMP6P_qTaUA:9 a=SJ86ST9pAJDDWCD4:21 a=_W_S_7VecoQA:10 a=Urk15JJjZg1Xo0ryW_k8:22 a=grOzbf7U_OpcSX4AJOnl:22 From: "Ernest Christley echristley@att.net" Received: from sonic304-25.consmr.mail.gq1.yahoo.com ([98.137.68.206] verified) by logan.com (CommuniGate Pro SMTP 6.2.7) with ESMTP id 11666334 for flyrotary@lancaironline.net; Thu, 20 Sep 2018 12:31:55 -0400 Received-SPF: none receiver=logan.com; client-ip=98.137.68.206; envelope-from=echristley@att.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1537461081; bh=msD7/J0iNSoGk47QQNSKbfd/LbxNA4e03taCtyaZhr8=; h=Date:From:Reply-To:To:In-Reply-To:References:Subject:From:Subject; b=QC3eZlObAZ6utT+VAWXTDJS11uVtJW6djINntDb+d017xnar0gJ2EWFemag1uGcJGuQd3kyZulPtlyM72845vzolTG7Rh6m7xYnQLws2LJg2qoXXqnoAMxbpFuq2VTHUQezV80I8dezR/KmRyOwktfJ99MA3P5VrbbeGRjSy0FE= X-YMail-OSG: k3Z79vEVM1lSlsKON0_kYvPCPRlUbFhMVdndkmXekMlTsvbSUehg4S7a_kmhoJE IXWHLxZMhWbw1f_NRTRbn0Yv17gTKCdaJhB_HVI7I03bZvNiLKzhO2Dzv2dKoOJa611oJswQHr5q hioK7eO2YWJlGUQ8M.K06q6qSu3PvJR9EN55HYWfTZctt_Tkl1seEaLni9J7l7tiqgx1w2SmfkiT Rf.Fk99Il4dXCw7qKIjv3xODJb0_jwYfPsd1Kyqw1SEeAM7zyLwGRrU1f3MeHodFW37mYRkHTSal Qi7qACmZSMlYMfVS6XD.zdK3r5s.aCP7nhV_hKUK1UACyRMWH5fZ4d_c9oekvp73HThf_WYoDcx5 DjlkHM.e.4aRB98tbilqHk7iMMeucKc9KD1uL8lQ5Hr1rUyC2l9kQrwHsE4IEsRmUFUSD7G.RX6Y SCM3zoJmoJLHe_2m6xw51UQKdEa242GCuy9Hi3scv9FUcNGGG35FGhOieGmpDb8g4eu8qw5p6elN xu6ojLX6Y2BT1gmYEPQB8mq2UeSY89DB7buOdoXtcgYwCBgXwyzJvFaxGr9sPwmfGxE0TEYHDP5. aNSh07yPNdHUGiniuM_C37.MHIywLOR5QV_iAEIpfdTJouvg8.W94tJ8bJDluAw_agbYdl.R2Ipp KIPibYtmOrZKa47w9FApU6bozXGpHxXKEiRyQ1YfJHU9PiZoDcDSm5I8jNweE5GupGHTJ4Sbp97N Q_SDSAanUXnVbOOZ9t4HtjR0pIlRPrO2jr70GuacadrS_P0f.bBcr.9jLFLpHMJLlv2a1v0N_dKY MPfQyM33Nq1AjRXKnkoqEqdHR8e4GadfFswt5g5ytMo.6dIg0V1XxqGauiD1Jpt5xLUVLMyXfubA YRskftkNKP08OAORUPLLePIN9tUCuLA6vGRTzz7opRdlLCYKKgxm79TFFoI3Ixoz2_XLYTE0rvMh O0TkaGsaigm0O1nqp4g-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic304.consmr.mail.gq1.yahoo.com with HTTP; Thu, 20 Sep 2018 16:31:21 +0000 Date: Thu, 20 Sep 2018 16:31:17 +0000 (UTC) Reply-To: Ernest Christley To: Rotary motors in aircraft Message-ID: <1104385975.481036.1537461077760@mail.yahoo.com> In-Reply-To: References: Subject: Re: [FlyRotary] Re: ECU - Megasquirt geared towards planes MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_481035_1715177153.1537461077757" X-Mailer: WebService/1.1.12473 YahooMailNeo Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:61.0) Gecko/20100101 Firefox/61.0 Content-Length: 8979 ------=_Part_481035_1715177153.1537461077757 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable No mixture knob, but no lead in the fuel, either.=C2=A0 They also don't gen= erally go from 100 to 10,000 ft on a regular basis. Lead kills the oxygen sensor, which is what the MS depends on for its auto = programming.=20 On Wednesday, September 19, 2018 7:05 PM, "Matt Boiteau mattboiteau@gma= il.com" wrote: =20 I always ask the question, Is there a mixture knob in a modern car? Long = gone are the days of carburetors.With EFI computers, they use a table (RPM = vs MAP) to indicate which AFR to target. Megasquirt does an excellent job o= f this. Once you get your=C2=A0engine's volumetric efficiency table dialed = in, all you have to do is change your AFR and MS will calculate your fuelin= g to reach that AFR.=C2=A0 - Matt Boiteau On 2018-09-18 11:27:40 AM, Ernest Christley echristley@att.net wrote:=20 On Monday, September 17, 2018 11:56 PM, "Matt Boiteau mattboiteau@gmail= .com" wrote: And I still haven=E2=80=99t been convinced of a mixture knob. Let the ECU = talk with the wideband & baro and do the work for you. - Matt Boiteau For mixture, one of the things you have to keep in mind is that there are s= ituations where you'll want different mixtures that the computer can't know= about.=C2=A0 For example, you want to go full rich on take off and landing= , but lean out for cruise.=C2=A0 How will the computer know what is appropr= iate at which time? I got around it by adding a pot to my throttle control and used it as the t= hrottle position sensor.=C2=A0 The first half of travel controlled the thro= ttle body cable, and the mixture was tuned lean until the throttle was comp= letely open.=C2=A0 The second half of the control lever travel increased th= e amount of fuel in the mixture, with it topping out at about 12:1. =20 -- Homepage:=C2=A0 http://www.flyrotary.com/ Archive and UnSub:=C2=A0 http://mail.lancaironline.net:81/lists/flyrotary/L= ist.html =20 ------=_Part_481035_1715177153.1537461077757 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
No mixture knob, but no lead in the f= uel, either.  They also don't generally go from 100 to 10,000 ft on a = regular basis.

<= div id=3D"yui_3_16_0_ym19_1_1537284828665_79189">Lead kills the oxygen sensor, which is what the MS= depends on for its auto programming.


On Wednesday, September 19, 2018 7:05 PM, "Matt Boi= teau mattboiteau@gmail.com" <flyrotary@lancaironline.net> wrote:
<= /font>


I always ask the question, Is there= a mixture knob in a modern car? Long gone are the days of carburetors.With EFI computers, they use = a table (RPM vs MAP) to indicate which AFR to target. Megasquirt does an ex= cellent job of this. Once you get your engine's volu= metric efficiency table dialed in, all you have to do is change your AFR an= d MS will calculate your fueling to reach that AFR. 

- Matt Boiteau
On 2018-09-18 11:27:40 AM, Ernest C= hristley echristley@att.net <flyrotary@lancaironline.net> wrote:


=
On Monday, September 17, 2018 = 11:56 PM, "Matt Boiteau mattboiteau@gmail.com" <flyrotary@lancaironline.= net> wrote:
And I still haven=E2=80=99t= been convinced of a mixture knob. Let the ECU talk with the wideband &= baro and do the work for you.
=
- Matt Boiteau


For mixture, one of t= he things you have to keep in mind is that there are situations where you'l= l want different mixtures that the computer can't know about.  For exa= mple, you want to go full rich on take off and landing, but lean out for cr= uise.  How will the computer know what is appropriate at which time?

I got around it by adding a pot to my throttle control and = used it as the throttle position sensor.  The first half of travel con= trolled the throttle body cable, and the mixture was tuned lean until the t= hrottle was completely open.  The second half of the control lever tra= vel increased the amount of fuel in the mixture, with it topping out at abo= ut 12:1.
--
Homepage:&n= bsp; http://www.fly= rotary.com/
Archive and UnSub:  http://mail.lancaironline.net:81/lists/flyrota= ry/List.html


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