X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=LuPsNUVc c=1 sm=1 tr=0 a=GJZKjXjzAuQc5oQWFUeNnw==:117 a=sTwFKg_x9MkA:10 a=d_30a814dLcA:10 a=r77TgQKjGQsHNAKrUKIA:9 a=pGLkceISAAAA:8 a=_6GpL_ENAAAA:8 a=Ia-xEzejAAAA:8 a=j0GXybIrAAAA:20 a=o1OHuDzbAAAA:8 a=7g1VtSJxAAAA:8 a=UFTKRQSdLudl1n2cHocA:9 a=6Df-rswiYBZhU7n2:21 a=ZQkCC03F7wgGFMwC:21 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=4PR2P7QzAAAA:8 a=0NLrE-eoD6fuzU1zU0kA:9 a=NUSkqfhtRzphuDF5:21 a=peswadbHcbWdKSnE:21 a=bLHpi2fszaG527Id:21 a=_W_S_7VecoQA:10 a=Urk15JJjZg1Xo0ryW_k8:22 a=5YQ6H4ZxyGn-KoBYtt8s:22 a=grOzbf7U_OpcSX4AJOnl:22 a=4dqwQCo7Po2mVW515mGf:22 From: "Finn Lassen finn.lassen@verizon.net" Received: from sonic311-25.consmr.mail.ne1.yahoo.com ([66.163.188.206] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 252930 for flyrotary@lancaironline.net; Mon, 18 May 2020 19:37:57 -0400 Received-SPF: pass receiver=logan.com; client-ip=66.163.188.206; envelope-from=finn.lassen@verizon.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=verizon.net; s=a2048; t=1589845060; bh=GnbuDlcpADmwXiNmX0jB5YutG9FMHC9hNyp11OlKuaY=; h=Subject:To:References:From:Date:In-Reply-To:From:Subject; b=eA9ZL5CIiyCixfu25bETtZMdZH407KNiTQwV50nigr3Ii/yN9TfbFKwEqwkIzOnxNvq6t+gVoxpAHKpZefs8iFARMzy+ExHffzkDfGpHcYPMIUJbwgufqKL+YdYGIIcMVH/PWiwV1SpkG/xZtGuM8RZrwiCM4vsQL7wpsw/z++KsbGnJWchAZhdTG2OMTUzoPxFcXZQeWNuFY9isxtKr2itEelw+mgZgg7L7On8TJLLJOHMFNkL+dw5KUu6Hs+6nTIHBeB1Xz2DAtv45GPQ/8zYY7yItiZht2oY+0et2zu4qLe9/Xybes3VE9UVL3LEKr9J/UgvSycak+Zx6iN3xMA== X-YMail-OSG: w002.lkVM1mt7G0KeiFYOXMZ2S1X893jSVY8OGOBv6ARRxCZ4XUomkjFpS16oIt rFnj0M98kK1jyCuMcWmKMIFkcGslInI8rhdsByHzbotlJ1VB3xb5dYPb2MWABH8r2.EED6y_7zXA 261U9d2k1mLQx3zs8qsOs8zPYZVFTtNYlddm8tN7IFCx3vrNGXvzzTUyYs_cZhxNeTa94VAHUF4x 1OuiCdHdCSnwf.7Nc6fsNJp0Kpm1nwEsq8dN6VaPocuQMC6r73w5mPIVkbEjXxo3fMz6BaqMGLrE 6eHA2esBFaX9uO_YjpiTgTFPj9PIpvhPvOym.gmhZXkXRF52J2M9a1OIKgQyfUHxPpnBGer51Gyx O8PFWtVz6xaPYI2zBJ6I0Uu3uRKN.Zp9uYMCwwHUzpYbKqcsAmHA35iELO56GKOQoOk.NIrjoFAg DWdXQsuunhtlIpmjS.H1ql_22UUc2FZ5A3w5CycCcYFZNb.z35Ih1XV_BS7ZY9t3ObiplxiBXM_G 87270D5V7DdLLRUiekwNULZpo.HGwix2MNFLkjBwiU3hXcHterMG2emyoCLRGByQqRL5vHq2yafa NkMcYyvlJI6EOoLZs33fpEjmJGnsCVj8OgMBllBqrJPU2r0FHg7jW3zUyVocCXmXuLXXyOqXDhGl AUy6HXZ8jdknNbYQEBv0KKmoAhHA5sMcyGs9KgFZxtu84yX1jucjSUR9FqbJF7W5IZgvPGQhBZa. vR7yPO_RLia.Lr3oyYhLLH8dHz24tTqs_LnzRuufU2yHEJg9mKR_U.slNk2pV5bZEfjdWQNA5OCW xYAelg4KnV3jZT_3rxZAiAotWRIuor4m_YFeXqGvKLTAAkr5aR6Bb9jGgbydPdgw7EStRH7ls0t9 3SEzPt8z5BkqFGQqRZf2m8ykby6QsatC21B5lEep3.XF506wbnMuEFeQiJzeT.PVoHcKj9dVACbQ cHGdRn57fc_J.7VFf5oCzDQt37HxzR1.7PYKoEWWyJGmwK_rT6FJSN62DnMpGR01fXC.UiJ3dYKZ XurpDJIkZ1CI1Fm0kJcfwwDYbtkAOFxc7TmJtHDCD90vdclY3vyb2Qna0q3kl7eSX3uPrARRgkJb SzCj47m6hdPFd01U2ZZUEoNghxCfv2mH_OazZKU4C2PwmBGSzRWngXw4_rPS8n82pBXyCups4T.d _PwfpaIvxSMGTZwD.SvUSR2qNQBS2KBzBfgwnqHhHu0aa1CbCPUmKWoGfqLMImcvRW1SZ1lxRfju f3OaN6kQ.nQh3rH_MclueL265gtqmgqnni7EpVjBtQ0_1Qnd7kp439Fr6_i6ctteLsItokTYXxmh BiB98MZbGurej.Xcm5G.br_PxBYsEvbe8zdDkiI4TBdn11sXUQ1bHIjHPpNlZ1rtmnC6DNL3A5OI jMSp7Tz_T2.G4zDeV3vLkN8ohCtc- Received: from sonic.gate.mail.ne1.yahoo.com by sonic311.consmr.mail.ne1.yahoo.com with HTTP; Mon, 18 May 2020 23:37:40 +0000 Received: by smtp420.mail.bf1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID d1ae513409ddba8839a8c71a207ec6af; Mon, 18 May 2020 23:37:35 +0000 (UTC) Subject: Re: [FlyRotary] Re: O2 sensor location To: Rotary motors in aircraft References: Message-ID: <098f3cac-ccc0-f062-875b-f90ad4fe3878@verizon.net> Date: Mon, 18 May 2020 19:37:28 -0400 User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------542FF7AFB3D9532AAD510D76" Content-Language: en-US X-Mailer: WebService/1.1.15960 hermes_aol Apache-HttpAsyncClient/4.1.4 (Java/11.0.6) Content-Length: 19276 This is a multi-part message in MIME format. --------------542FF7AFB3D9532AAD510D76 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Cool. So there are several solutions /if/ it turns out temp is too high at current location. Also, I could move the bung further down, if I end up extending the exhaust pipe down under the fuselage. But the first O2 sensor in the stock manifold is pretty close to the port, so why is that not a problem in the RX-8? Even though I intend to use the analog output from the ALM board, it looks I may be able to hook up a laptop and read the temperature as well. Finn On 5/18/2020 5:06 PM, Charlie England ceengland7@gmail.com wrote: > Sorry; I should have included a message with that link. I suspect that > with a little digging, a model could be located that would allow > modification to emulate what Steve's device does. Of course, if > someone (Tracy) has a metal lathe... > > Charlie > > > Virus-free. www.avast.com > > > > > On Mon, May 18, 2020 at 2:05 PM Charlie England ceengland7@gmail.com > > wrote: > > https://www.google.com/search?q=o2+sensor+bung+extension&oq=o2+sensor+bung+extension&aqs=chrome..69i57j69i65.7765j0j7&sourceid=chrome&ie=UTF-8 > > > > Virus-free. www.avast.com > > > > > On Mon, May 18, 2020 at 1:43 PM Finn Lassen > finn.lassen@verizon.net > > > wrote: > > Thanks Steve. > > Hadn't seen that before. > > Work of art! > > But, dang, $89 (or $58  on eBay). Could buy a couple new O2 > sensors at that price. > > Finn > > > On 5/18/2020 12:31 PM, Steven W. Boese SBoese@uwyo.edu > wrote: >> Finn, >> >> FWIW, I've used the bung extender shown in the photos on my >> test stand without ill effects other than initial cost. >> >> Steve Boese >> >> ------------------------------------------------------------------------ >> *From:* Rotary motors in aircraft >> >> on behalf of Finn Lassen >> finn.lassen@verizon.net >> >> >> *Sent:* Monday, May 18, 2020 7:55 AM >> *To:* Rotary motors in aircraft >> >> *Subject:* [FlyRotary] O2 sensor location >> ◆ This message was sent from a non-UWYO address. Please >> exercise caution when clicking links or opening attachments >> from external sources. >> >> >> So I bought the Bosch LSU 4.9 wideband oxygen sensor and >> ALM-board. >> >> Specs for the LSU 4.9 says max operating temperature is 930 >> °C (1700°F). >> >> I recall seeing 1950F EGT temps on my 13B with EGT probes 8" >> from the >> side of the engine. >> >> On the RV-4 Renesis,  before buying the wideband sensor, I >> welded the >> bung 12" from the closest port. (Stock manifold cut and 180° >> turn at >> exhaust port nearest flywheel, 2.5" pipe.) >> >> I expect the Renesis to have slightly lower EGT temps, but am >> worrying >> about damaging the O2 sensor. >> >> Charlie suggests mounting the sensor on a longer bung, moving >> the sensor >> out of the direct gas stream, but I feel that may reduce the >> accuracy of it. >> >> My plan was to use the cheap narrowband O2 sensor initially >> and find the >> engine settings giving highest EGTs, then temporarily mount >> an EGT probe >> in the O2 bung hole, run the engine at those settings and see >> if EGT >> there was safe for the wideband sensor. >> >> But maybe I'm worrying about nothing. >> >> Do any of you have data on how rapidly the temps drop as a >> function of >> distance from exhaust port? >> >> Finn >> >> >> >> -- >> Homepage:http://www.flyrotary.com/ >> Archive and UnSub:http://mail.lancaironline.net:81/lists/flyrotary/List.html > > > > > Virus-free. www.avast.com > > > --------------542FF7AFB3D9532AAD510D76 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit
Cool.

So there are several solutions if it turns out temp is too high at current location.

Also, I could move the bung further down, if I end up extending the exhaust pipe down under the fuselage.

But the first O2 sensor in the stock manifold is pretty close to the port, so why is that not a problem in the RX-8?

Even though I intend to use the analog output from the ALM board, it looks I may be able to hook up a laptop and read the temperature as well.

Finn


On 5/18/2020 5:06 PM, Charlie England ceengland7@gmail.com wrote:
Sorry; I should have included a message with that link. I suspect that with a little digging, a model could be located that would allow modification to emulate what Steve's device does. Of course, if someone (Tracy) has a metal lathe...

Charlie

Virus-free. www.avast.com

On Mon, May 18, 2020 at 2:05 PM Charlie England ceengland7@gmail.com <flyrotary@lancaironline.net> wrote:

Virus-free. www.avast.com

On Mon, May 18, 2020 at 1:43 PM Finn Lassen finn.lassen@verizon.net <flyrotary@lancaironline.net> wrote:
Thanks Steve.

Hadn't seen that before.

Work of art!

But, dang, $89 (or $58  on eBay). Could buy a couple new O2 sensors at that price.

Finn


On 5/18/2020 12:31 PM, Steven W. Boese SBoese@uwyo.edu wrote:
Finn,

FWIW, I've used the bung extender shown in the photos on my test stand without ill effects other than initial cost.

Steve Boese

From: Rotary motors in aircraft <flyrotary@lancaironline.net> on behalf of Finn Lassen finn.lassen@verizon.net <flyrotary@lancaironline.net>
Sent: Monday, May 18, 2020 7:55 AM
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: [FlyRotary] O2 sensor location
 
◆ This message was sent from a non-UWYO address. Please exercise caution when clicking links or opening attachments from external sources.


So I bought the Bosch LSU 4.9 wideband oxygen sensor and ALM-board.

Specs for the LSU 4.9 says max operating temperature is 930 °C (1700°F).

I recall seeing 1950F EGT temps on my 13B with EGT probes 8" from the
side of the engine.

On the RV-4 Renesis,  before buying the wideband sensor, I welded the
bung 12" from the closest port. (Stock manifold cut and 180° turn at
exhaust port nearest flywheel, 2.5" pipe.)

I expect the Renesis to have slightly lower EGT temps, but am worrying
about damaging the O2 sensor.

Charlie suggests mounting the sensor on a longer bung, moving the sensor
out of the direct gas stream, but I feel that may reduce the accuracy of it.

My plan was to use the cheap narrowband O2 sensor initially and find the
engine settings giving highest EGTs, then temporarily mount an EGT probe
in the O2 bung hole, run the engine at those settings and see if EGT
there was safe for the wideband sensor.

But maybe I'm worrying about nothing.

Do any of you have data on how rapidly the temps drop as a function of
distance from exhaust port?

Finn



--
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