X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=LuPsNUVc c=1 sm=1 tr=0 a=CJPXSJsgTIwo90TrqDPtZQ==:117 a=x7bEGLp0ZPQA:10 a=A-0mRrAPPO4A:10 a=sTwFKg_x9MkA:10 a=_6GpL_ENAAAA:8 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=j0GXybIrAAAA:20 a=o1OHuDzbAAAA:8 a=7g1VtSJxAAAA:8 a=0NOsokuCxtnEyCYbcIQA:9 a=C5y6gzNRM5-5nJuf:21 a=3177DkSpwmVerrkk:21 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=aGWQ7BwVw0FLTlJKOu8A:9 a=8LcGEYf1Fx-qJX7D:21 a=v2DvXCKsaPkmztTH:21 a=cpisn5tahLaR1wFr:21 a=Urk15JJjZg1Xo0ryW_k8:22 a=5YQ6H4ZxyGn-KoBYtt8s:22 a=grOzbf7U_OpcSX4AJOnl:22 From: "Charlie England ceengland7@gmail.com" Received: from mail-il1-f170.google.com ([209.85.166.170] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 252428 for flyrotary@lancaironline.net; Mon, 18 May 2020 17:12:23 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.166.170; envelope-from=ceengland7@gmail.com Received: by mail-il1-f170.google.com with SMTP id j3so11304455ilk.11 for ; Mon, 18 May 2020 14:12:24 -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=Hedgy3lR8MWqRxSIlnLkGWEDtG/u7DgmcMilm0eUEDk=; b=qR10W651wWSuUhm3mdNLyYeVO8bmUBhE1Pegpnpnb/rpZkm+MkLg2sQGYDnyNWWkrg +a7z+XypaCj00kfko/C1aTwd4tV0wtkbh3DX4GwaZ3A71dMOOH5NaeGaLTBo2GtnHtfk 8aGftXCm/0Bg24yXMKkxDxIqKiO0iqzkQ4N4mt48epb4TzZ0Z8AtCyC/AoUw/XMw++zS vbhhA0ZU/SslTPC71VVRuqGJVWY2Kf0cHLQkREdNMrq2CCdQrQaYht9b0nB74wvaEnw4 9PDa6cZb7E4wImMQ1256l3n4pK30VKEpFqD4sPR/KwGl1AQPLytEd+xhNVTeIRXSIi2d Pd3Q== 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=Hedgy3lR8MWqRxSIlnLkGWEDtG/u7DgmcMilm0eUEDk=; b=nr+It4wd+fuU3W6PlTggsiV+RWfWZmkiFCmvICGPzCITO2+3c42ljrNeS/VDgIkJaW hznReP1utSn79hkLcKnRplZLbnQ5IPMeGKZxMfgGJg/LOe/ot/+a1gow6gb995s99r17 MJQeBOu03u+BC7fY11pPJNU51xL2y2JOb+oAIwUpo14pI+DX9BXzL3QkLPeOl+q13vBZ QrDLOhf6rv4IftLAVmUZQ59zco60Q3WenaH7qT2QEK/DOLUCxaCRhTVaveEKiNR80Wl0 NEDwhouURv3/4AZ37vw46yZP7i+f75sQuFBKFJpNs9IicCcsCMOYpK7sRCg76lbv8rBv byRw== X-Gm-Message-State: AOAM5330KyQcLV7QZesHf4JRLbBOSEeJlQIKkzxVfdr/dovSma/1GVDK RbdInjbPQTWai7+gMskOgt0BV3U5HlxVh7XUhHQKXw== X-Google-Smtp-Source: ABdhPJzAzkG6qMwd5Nsn0TCkwB+z/aV5wOzlibrdsVrZAU55oVZZbKOfohLuAg8CtyyzLzoEiOnhbnR1Dq+S5lxdgiE= X-Received: by 2002:a92:984e:: with SMTP id l75mr2591650ili.22.1589836325989; Mon, 18 May 2020 14:12:05 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Mon, 18 May 2020 16:06:30 -0500 Message-ID: Subject: Re: [FlyRotary] Re: O2 sensor location To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="00000000000076324205a5f29d34" --00000000000076324205a5f29d34 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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 <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Mon, May 18, 2020 at 2:05 PM Charlie England ceengland7@gmail.com < flyrotary@lancaironline.net> wrote: > > https://www.google.com/search?q=3Do2+sensor+bung+extension&oq=3Do2+sensor= +bung+extension&aqs=3Dchrome..69i57j69i65.7765j0j7&sourceid=3Dchrome&ie=3DU= TF-8 > > > > Virus-free. > www.avast.com > > <#m_-8926732083624099908_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > 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 >> 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 >> >> =E2=97=86 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 =C2=B0C (170= 0=C2=B0F). >> >> 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=C2=B0 turn a= t >> 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/Li= st.html >> >> >> > > Virus-free. > www.avast.com > > <#m_-8926732083624099908_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > --00000000000076324205a5f29d34 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Sor= ry; 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 e= mulate what Steve's device does. Of course, if someone (Tracy) has a me= tal lathe...
Charlie

3D"" Virus-free. www.avast.com

On Mon, May 18, 2020 at 2:05 PM Charlie England ceengland7@gmail.com <flyrotary@lancaironline.net> wrote:
<= div id=3D"gmail-m_-8926732083624099908DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"= >
3D"" Virus-free. www.avast.com

On Mon, May 18, 2020 at 1:43 PM = Finn Lassen fi= nn.lassen@verizon.net <flyrotary@lancaironline.net> wrote:
=20 =20 =20
Thanks Steve.

Hadn't seen that before.

Work of art!

But, dang, $89 (or $58=C2=A0 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:
=20 =20
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 fi= nn.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
=C2=A0
=E2=97=86 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 =C2=B0C (1700=C2=B0F).

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

On the RV-4 Renesis,=C2=A0 before buying the wideband senso= r, I welded the
bung 12" from the closest port. (Stock manifold cut an= d 180=C2=B0 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://w=
ww.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81/lists/f=
lyrotary/List.html



3D"" Virus-free. www.avast.com
--00000000000076324205a5f29d34--