X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=O/h7h11W c=1 sm=1 tr=0 a=DFCI+fv169OpPnZCwMv1PA==:117 a=x7bEGLp0ZPQA:10 a=TPB0gybzSFkA:10 a=JBFolyDoGHsA:10 a=UKPAHat8AAAA:8 a=Ia-xEzejAAAA:8 a=HZJGGiqLAAAA:8 a=7g1VtSJxAAAA:8 a=k9WSZLXGkhNGwRdx6BEA:9 a=7Zwj6sZBwVKJAoWSPKxL6X1jA+E=:19 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=nCqMXGj1n0wERdypfV4A:9 a=UP5accHIfgAFnhFQ:21 a=Fc6xXSS-RxGHxrvp76Qp:22 a=Urk15JJjZg1Xo0ryW_k8:22 a=grOzbf7U_OpcSX4AJOnl:22 From: "Robert McMillan robmcmillanpls@gmail.com" Received: from mail-ot1-f47.google.com ([209.85.210.47] verified) by logan.com (CommuniGate Pro SMTP 6.2.7) with ESMTPS id 11672515 for flyrotary@lancaironline.net; Sat, 22 Sep 2018 00:29:55 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.210.47; envelope-from=robmcmillanpls@gmail.com Received: by mail-ot1-f47.google.com with SMTP id e18-v6so14992598oti.8 for ; Fri, 21 Sep 2018 21:29:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=tdVuNngQSGkeDI+xSNLNnT4u3J0hdBdVfS4g4Se7kvs=; b=MZtBb4bleW7MXyatGduJv1dp9nbKnDXz9zWVLbjjSv5NI9C2NZgcPu+5ULnPUgXVvQ t63XeRk0VQv3l+bABTchbaF3RkOZi1m6VMatRL1K/8btC+mHY1v0k3X9kiqPN87wx3jC cL9rTDIaW+oiJmfnuHfqURc/dFaPfeXUa7AruEg1ekP2sv79y/O7qLdKavvtWrB8P/8i GlMgT1YPXBGyVGAnB+tIviuusNHffzHdBCHe2urZwQ6gliXTpxr6X+dFM8W3++U0QP6h PJi90ZHGnpBEo8gegM+bzoLqYht5ZWr4vAxySFJWV0eweBxjrvqbCmL9nFWDCdKcHjwd mLQw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=tdVuNngQSGkeDI+xSNLNnT4u3J0hdBdVfS4g4Se7kvs=; b=Y7oyUaGOCopmkO7Vk2SrU08FKgjiKu5eMP5hfNlbRdYTZRusWmOwEoRL1LLPsl3qJP aKZ+CCMZ1Z0phJmud1cleEmHcUoZF54uDA8YAPkWzdMVcsQkVCZ6GPccmBcM/40vUo/q +1loGx0pYoAR435BfjCGsSKdvvncGm+iAm8V9WA2LXsNtDQfhaBqugLmt2nf7HOLCSvZ ZtiyafCDi+5KDHVdA70iGcVfz2w04MLmZZ2Ysa32eMGCMfavb8ZRJOjraIDuEj9ftG3Q qm4DZSD2B1cDrsgSMulGbY97wGDt75ITc5NExohEp7TZkIqiNOQO55pYw5bXf0cBkeNM laIg== X-Gm-Message-State: ABuFfojZMbZEtuvvhrdRei4S/F2LjgHvx/Hb+SLB30IosHc0TU2OSB98 hj0RV8WxwKe/RZkLb3V2OiWMWCzuwiWCHwpd1PHueQ== X-Google-Smtp-Source: ACcGV63A6BzxbjGNcIVV/otFMHTV/zstuOU8YzbxaZmqGDOU88vIGGt7bJ484mmGHZhmo/nUrLmtpomRI/nO+aaY6oU= X-Received: by 2002:a9d:4a49:: with SMTP id d9-v6mr525706otj.374.1537590580045; Fri, 21 Sep 2018 21:29:40 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Fri, 21 Sep 2018 21:32:32 -0700 Message-ID: Subject: Re: [FlyRotary] Re: ECU - Megasquirt geared towards planes To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="000000000000556bb705766e349a" --000000000000556bb705766e349a Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Got it. Thank you! On Fri, Sep 21, 2018, 9:12 AM Bobby J. Hughes bhughes@qnsi.net < flyrotary@lancaironline.net> wrote: > Robert, > > > > Upper rpm is really limited by prop selection. I have an electric MT > constant speed prop and I use 7000 rpm as a maximum rpm. I can reach 7500= + > rpm but that=E2=80=99s out of my comfort zone. > > > > Bobby > > > > > > > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] > *Sent:* Friday, September 21, 2018 1:16 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: ECU - Megasquirt geared towards planes > > > > I apologize for this dumb question, but what engine RPM are you guys > turning for say takeoff? Max power situations? > > > > Thanks, > > > > On Thu, Sep 20, 2018, 6:27 PM Ernest Christley echristley@att.net < > flyrotary@lancaironline.net> wrote: > > For those that don't know what we're talking about, the MS provides > multiple ways to determine how much fuel to add at any particular time. > MAP and throttle position sensor is used mostly, but throttle position an= d > RPM is better for low RPM/low power operations. Even slight perturbation= s > in manifold pressure, mostly resulting from sensor noise, have large > effects and works against a smooth idle. So, it gives you two tables, an= d > a way to transition from one to the other as power increases. > > > > I used the blending feature and it worked well. I will say that initiall= y > working my mind around what was going on was difficult, but that was more > of dealing with the engine complexity than the software complexity. Mayb= e > it is just hindsight, and things looking rosy after you've been through t= he > fire, but this is actually no more confusing than saying that you have to > get both ignition timing and mixture correct. Trying to fix one while > ignoring the other will also result in "confusion and failure" :-) > > > > On Thursday, September 20, 2018 3:11 PM, "Bobby J. Hughes bhughes@qnsi.ne= t" > wrote: > > > > Ernest, > > > > See below. I like the confusion and failure statement in the instructions= . > J > > > > > > > > Bobby > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] > *Sent:* Thursday, September 20, 2018 12:42 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: ECU - Megasquirt geared towards planes > > > > > > On Thursday, September 20, 2018 7:25 AM, "Bobby J. Hughes bhughes@qnsi.ne= t" > wrote: > > > > MS3 does not support a manual mixture control directly but it appears > possible using the table blending feature. Not much information available > about that feature but should be easy to test. > > > > > > The manual mixture is not supported directly, but can be added. As I've > noted before, put a potentiometer in the throttle control, and configure > the cable to open the throttle fully at half travel. The second half of > travel controls mixture. > > > > I found the documentation for the table blending feature to be adequate. > I don't see how the table blending would be useful for mixture control (n= ot > saying it isn't, just that I don't see how). Its intended purpose is to > change the type of control between low and high RPM mixture control. > > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > --000000000000556bb705766e349a Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Got it. Thank you!=C2=A0

On Fri, Sep 21, 2018, 9:12 AM Bobby J. Hughes bhughes@qnsi.net <flyrotary@lancaironline.net> wrote:

Robert,

=C2=A0

<= p class=3D"MsoNormal">Upper rpm is really limite= d by prop selection. I have an electric MT constant speed prop and I use 70= 00 rpm as a maximum rpm. I can reach 7500 + rpm but that=E2=80=99s out of m= y comfort zone.

=C2=A0

Bobby

= =C2=A0

=C2=A0

=C2=A0

From: Rotary motors= in aircraft [mailto:flyrotary@lancaironline.net]
Sent= : Friday, September 21, 2018 1:16 AM
To: Rotary motors in air= craft
Subject: [FlyRotary] Re: ECU - Megasquirt geared towards pl= anes

=C2=A0

I apologize for this dumb question, but what e= ngine RPM are you guys turning for say takeoff? Max power situations?

=C2=A0

=

Thanks,=C2=A0

=C2=A0

On = Thu, Sep 20, 2018, 6:27 PM Ernest Christley echristley@att.net <flyrotary@lancaironline.net> wrote:

For those that don't know what we're talking about, the MS provi= des multiple ways to determine how much fuel to add at any particular time.= =C2=A0 MAP and throttle position sensor is used mostly, but throttle positi= on and RPM is better for low RPM/low power operations.=C2=A0 Even slight pe= rturbations in manifold pressure, mostly resulting from sensor noise, have = large effects and works against a smooth idle.=C2=A0 So, it gives you two t= ables, and a way to transition from one to the other as power increases.=

=C2=A0

I used the blending feature and it worked we= ll.=C2=A0 I will say that initially working my mind around what was going o= n was difficult, but that was more of dealing with the engine complexity th= an the software complexity.=C2=A0 Maybe it is just hindsight, and things lo= oking rosy after you've been through the fire, but this is actually no = more confusing than saying that you have to get both ignition timing and mi= xture correct.=C2=A0 Trying to fix one while ignoring the other will also r= esult in "confusion and failure"=C2=A0 :-)

=C2=A0

On Thursday, September 20, 2018 3:11 PM, "Bobby J. Hug= hes bhughes@qnsi.net" <flyrotary@lancaironline.net&g= t; wrote:

=C2= =A0

Ernest,

=C2=A0<= /p>

S= ee below. I like the confusion and failure statement in the instructions. <= /span>J<= u>

=C2=A0

=C2=A0<= /p>

<= img border=3D"0" width=3D"651" height=3D"491" id=3D"m_4736684317536428812m_= 8358289478096472323yiv5939030443Picture_x0020_1">

<= /div>

=C2= =A0

Bobby

<= div>

From: Rotary motors in aircraft [m= ailto:flyrotary@lancaironline.net]
Sent: Thursday,= September 20, 2018 12:42 PM
To: Rotary motors in aircraft
= Subject: [FlyRotary] Re: ECU - Megasquirt geared towards planes<= span style=3D"font-family:"Helvetica","sans-serif";colo= r:black">

=C2=A0

=

On Thursday, September 20, 2018 7:25 AM,= "Bobby J. Hughes bhughes@qnsi.net" <flyrotary@lanc= aironline.net> wrote:

=C2=A0

MS3 doe= s not support a manual mixture control directly but it appears possible usi= ng the table blending feature. Not much information available about that fe= ature but should be easy to test.=C2=A0

=C2=A0=

=

=C2=A0

The manual mixture is not s= upported directly, but can be added.=C2=A0 As I've noted before, put a = potentiometer in the throttle control, and configure the cable to open the = throttle fully at half travel.=C2=A0 The second half of travel controls mix= ture.=C2=A0

=C2=A0=

I found the docume= ntation for=C2=A0 the table blending feature to be adequate.=C2=A0 I don= 9;t see how the table blending would be useful for mixture control (not say= ing it isn't, just that I don't see how).=C2=A0 Its intended purpos= e is to change the type of control between low and high RPM mixture control= .

<= /div>

=C2=A0

--
Homepage:=C2=A0 http://www.flyrotary.= com/
Archive and UnSub:=C2=A0 =C2=A0http://mail.lancaironline.net:81/lists/flyrotary/List.html

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