X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=H+OlPNQi c=1 sm=1 tr=0 a=KEL5k4CtlTUHR7+issqm/A==:117 a=55z/sxGcUIPVrBMYBb4HRw==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=x7bEGLp0ZPQA:10 a=_Z_nqdSeG58A:10 a=MeAgGD-zjQ4A:10 a=r77TgQKjGQsHNAKrUKIA:9 a=3oc9M9_CAAAA:8 a=Ia-xEzejAAAA:8 a=o1OHuDzbAAAA:8 a=pGLkceISAAAA:8 a=7g1VtSJxAAAA:8 a=lPlR7AS_bb-4Pf3kPH0A:9 a=0E5ggsxI1jxpIvi8:21 a=MyHvt3E8jyRcBZN_:21 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=4PR2P7QzAAAA:8 a=VnXFNvBzwWNaVfwZsWAA:9 a=fG64B4tIvk-xCrAF:21 a=wW0tYzIWOSQD8Gfj:21 a=5wHhGVz1W1GrBDTP:21 a=_W_S_7VecoQA:10 a=Urk15JJjZg1Xo0ryW_k8:22 a=5YQ6H4ZxyGn-KoBYtt8s:22 a=grOzbf7U_OpcSX4AJOnl:22 a=4dqwQCo7Po2mVW515mGf:22 From: "Neil Unger 12348ung@gmail.com" Received: from mail-pg1-f172.google.com ([209.85.215.172] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 13190787 for flyrotary@lancaironline.net; Mon, 18 Nov 2019 15:19:15 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.215.172; envelope-from=12348ung@gmail.com Received: by mail-pg1-f172.google.com with SMTP id b10so1633903pgd.4 for ; Mon, 18 Nov 2019 12:19:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language; bh=Z5+zS+5ZMQadfbiQMDhtI7Qheah28Z4UXJCKgGY6Z7A=; b=grwJMWeB0wbHWW60l9rNOEIYPcM8KtjijMucNq4sqt55lid/QLcxIJtQC+ktTkNrff HGxNyyBy5n5Bf9H3QLmp0y8bl3i8s2bRBxgApz87u3VANFJm27o8JDtXgVkINwP4ZHX3 BHp0C5OmbVatEttv8eFRXnpCbEL+im80wXcNJJvyJ2I48pOkY4IPGpa22CILRQ6lYY3a +IebPg26ChhwirABdB3Q0GN8NmC/vRRo38howp8vmW0SDSo35/0PeYlNwyPEpbsR5sJv 5zt6oycK5Ni/XJVIU4rS2+L6IBpLFT46QEBM2EXTztKm8sBJGhmZwp6Yu9qPyoVI1jIi ozYA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language; bh=Z5+zS+5ZMQadfbiQMDhtI7Qheah28Z4UXJCKgGY6Z7A=; b=lYMhsjeTPfwVzupASyey8SfepoVbiLzlLGSjyLlYLKMGAv2VaxpjRoj71cIMcSkaWG dHKdtgtdqFMOyROCYdklmSKHU6HKhUqt4mlLJPciF++EReumYqx4UWGwtuWT2EAfIcO5 SotzreTDGRNtUX5J4MQpI9HuCkgC4D2r78Oh4xeeHYDzU5h/2hrFkev+VuiLoFq7Tj0Q GKjKfPH641sHTk0YK/UMTu+88y/cz4nU+bKw4BCvNe32NF7ppgvf14oAhSbRwnhCL9Ov fWe3j0gNoo8ju5+Z8g8rQ9sPOUJ6uTK1+jSSnAA+Sf6V8GeFSeaDBPpADl+PdfAcm7fJ f20g== X-Gm-Message-State: APjAAAXhVewS21foGxQIRrc/7NeiZT45iuFM0mDH1O3tEElTqT0gvf0w K5ns3beLunl9m12274es06Rcp2F4 X-Google-Smtp-Source: APXvYqxQv9i+XPB/Sz/WQvlQ+SlMJUvp8YcqQ7O8/jTpNKks8hXhSJuYDtKOXZ4mij7qac2guLppfQ== X-Received: by 2002:a63:c04f:: with SMTP id z15mr1330636pgi.52.1574108338067; Mon, 18 Nov 2019 12:18:58 -0800 (PST) Return-Path: <12348ung@gmail.com> Received: from [192.168.0.106] ([103.198.24.78]) by smtp.gmail.com with ESMTPSA id d6sm21747389pfn.32.2019.11.18.12.18.56 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Nov 2019 12:18:57 -0800 (PST) Subject: Re: [FlyRotary] Re: EGT Probe location in stock manifold To: Rotary motors in aircraft References: Message-ID: <188dde7e-c217-835b-302a-cbd81c70bcb4@gmail.com> Date: Tue, 19 Nov 2019 07:18:53 +1100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------3358C08542FB79F1A6B2AB35" Content-Language: en-US This is a multi-part message in MIME format. --------------3358C08542FB79F1A6B2AB35 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Lynn,                  ON a related topic -- mufflers.  Even with a turbo I believe a muffler is a definite asset, but weight the usual annoyance.  With all the experience you have just what muffler do you recommend to keep the last bit of hearing I have left? Neil. On 11/19/2019 2:35 AM, lehanover lehanover@aol.com wrote: > Engine builders like different locations. The object of the probe is > to collect data on the combustion process inside the chamber. So, the > ideal power mixture is the highest temperature in general the same as > a piston engine. (It was running great just before the piston melted) > So, more fuel or less fuel than best power can both lower exhaust > temps. So, one way or the other (pick one) keep EGTs below 1650 and > the probes last a long time. Stock apex seals last longer as well. So > the EGT gauge is nice to have rather than trying to get chunks of apex > seal out of a muffler. Even if you run ceramic apex seals which will > stand up to anything, however the exhaust system (even stainless) will > have a short life above 1700 degrees. I melted everything there is to > melt on the racer. I was a slow learner. > 3 inches out from the port, on the outside of any > curve...................Lynn E. Hanover > > > > > In a message dated 11/17/2019 8:49:32 PM Eastern Standard Time, > flyrotary@lancaironline.net writes: > > Finn,  Not a stock manifold, made from 321 S/S.  Drilled in and > welded > boss for probes.  One each end as it came out from exhaust port each > end.  Neil. > > On 11/18/2019 9:31 AM, Finn Lassen finn.lassen@verizon.net > wrote: > > Curious how you could place them 4" from the port(s). > > > > The Renesis manifold has at least two layers. Center ports? > Outer ports? > > > > Finn > > > > On 11/17/2019 3:16 PM, Neil Unger 12348ung@gmail.com > wrote: > >> finn, > >> > >> ?????????????????????????????????????? I put 2 EGT's in the > standard > >> position of 4 inches from the port, and really there was no > >> difference except that I kept burning both off.?? Their > usefulness, > >> and one will do, is to regulate high temps with either revs > (lower) > >> or a richer mix to lower the high EGT. 1800 degrees F is quite > warm > >> and will test the exhaust system.?? The probe just lets you > know if > >> you are wasting your time or actually achieving something.?? > Once set > >> up they are just another thing to worry about in my case, so > >> currently running without. > >> > >> Neil > >> > >> On 11/18/2019 4:16 AM, Finn Lassen finn.lassen@verizon.net > wrote: > >>> For those of you that are using the stock manifold, where/how did > >>> you locate the EGT probes? > >>> > >>> With an O2 sensor, I'm not sure that a single EGT probe has much > >>> usefulness. However, one for each rotor would give indication of > >>> mixture imbalance between the two rotors. > >>> > >>> Finn > >>> > >>> > >>> -- > >>> Homepage:?? http://www.flyrotary.com/ > >>> Archive and UnSub: > >>> http://mail.lancaironline.net:81/lists/flyrotary/List.html > >> > >> -- > >> Homepage:?? http://www.flyrotary.com/ > >> Archive and UnSub: > >> http://mail.lancaironline.net:81/lists/flyrotary/List.html > >> > > > > > > -- > > Homepage: http://www.flyrotary.com/ > > Archive and UnSub: > > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --------------3358C08542FB79F1A6B2AB35 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

Lynn,

                 ON a related topic -- mufflers.  Even with a turbo I believe a muffler is a definite asset, but weight the usual annoyance.  With all the experience you have just what muffler do you recommend to keep the last bit of hearing I have left?

Neil.

On 11/19/2019 2:35 AM, lehanover lehanover@aol.com wrote:
Engine builders like different locations. The object of the probe is to collect data on the combustion process inside the chamber. So, the ideal power mixture is the highest temperature in general the same as a piston engine. (It was running great just before the piston melted) So, more fuel or less fuel than best power can both lower exhaust temps. So, one way or the other (pick one) keep EGTs below 1650 and the probes last a long time. Stock apex seals last longer as well. So the EGT gauge is nice to have rather than trying to get chunks of apex seal out of a muffler. Even if you run ceramic apex seals which will stand up to anything, however the exhaust system (even stainless) will have a short life above 1700 degrees. I melted everything there is to melt on the racer. I was a slow learner.
3 inches out from the port, on the outside of any curve...................Lynn E. Hanover


 

In a message dated 11/17/2019 8:49:32 PM Eastern Standard Time, flyrotary@lancaironline.net writes:

Finn,  Not a stock manifold, made from 321 S/S.  Drilled in and welded
boss for probes.  One each end as it came out from exhaust port each
end.  Neil.

On 11/18/2019 9:31 AM, Finn Lassen finn.lassen@verizon.net wrote:
> Curious how you could place them 4" from the port(s).
>
> The Renesis manifold has at least two layers. Center ports? Outer ports?
>
> Finn
>
> On 11/17/2019 3:16 PM, Neil Unger 12348ung@gmail.com wrote:
>> finn,
>>
>> ?????????????????????????????????????? I put 2 EGT's in the standard
>> position of 4 inches from the port, and really there was no
>> difference except that I kept burning both off.?? Their usefulness,
>> and one will do, is to regulate high temps with either revs (lower)
>> or a richer mix to lower the high EGT. 1800 degrees F is quite warm
>> and will test the exhaust system.?? The probe just lets you know if
>> you are wasting your time or actually achieving something.?? Once set
>> up they are just another thing to worry about in my case, so
>> currently running without.
>>
>> Neil
>>
>> On 11/18/2019 4:16 AM, Finn Lassen finn.lassen@verizon.net wrote:
>>> For those of you that are using the stock manifold, where/how did
>>> you locate the EGT probes?
>>>
>>> With an O2 sensor, I'm not sure that a single EGT probe has much
>>> usefulness. However, one for each rotor would give indication of
>>> mixture imbalance between the two rotors.
>>>
>>> Finn
>>>
>>>
>>> --
>>> Archive and UnSub:
>>
>> --
>> Archive and UnSub:
>>
>
>
> --
> Archive and UnSub:

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