X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=C7Kr8kH+ c=1 sm=1 tr=0 a=25wAzPyKsFLuugJVl5BEZw==:117 a=55z/sxGcUIPVrBMYBb4HRw==:17 a=x7bEGLp0ZPQA:10 a=_Z_nqdSeG58A:10 a=dapMudl6Dx4A:10 a=r77TgQKjGQsHNAKrUKIA:9 a=UKPAHat8AAAA:8 a=Ia-xEzejAAAA:8 a=7g1VtSJxAAAA:8 a=zKO2zRbJoxsZ-W6lsZYA:9 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=4PR2P7QzAAAA:8 a=WOaz2V_pXT0MbXxFmnMA:9 a=aUSu4xUQpvsssWED:21 a=_W_S_7VecoQA:10 a=Fc6xXSS-RxGHxrvp76Qp:22 a=Urk15JJjZg1Xo0ryW_k8:22 a=grOzbf7U_OpcSX4AJOnl:22 a=4dqwQCo7Po2mVW515mGf:22 From: "Neil Unger 12348ung@gmail.com" Received: from mail-pl1-f169.google.com ([209.85.214.169] verified) by logan.com (CommuniGate Pro SMTP 6.2.7) with ESMTPS id 11567656 for flyrotary@lancaironline.net; Sat, 25 Aug 2018 17:09:57 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.169; envelope-from=12348ung@gmail.com Received: by mail-pl1-f169.google.com with SMTP id g23-v6so2481910plq.9 for ; Sat, 25 Aug 2018 14:09:58 -0700 (PDT) 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=TUd8n7u/UUPVB3b37wzVjovX0jCBZiusP6VzYeWk1tg=; b=DEApn5qr7JwqjQerfLnSyi095zIn7JPk+IBl6mOS+yPA7EcXzaQmhszGt2VI2qmabp fRgaLk8ax+MWq8pa3tR1T9DB7bgzyUOrxYYhbZLjsyVVRgWoMBQpvzGiYTlKN8Cxeq7f pq7utSSOb3x+DjSOIfPLXy81O8Ko9Fmfb05kCtEwXlk5k6ATvuEg2ssEHvwoLBfOaqnJ b73zcVLMuvVK4c00UJfShteAcKzinFofyzlXV3SbW94jwnPCTjSAqzPO3cgxJ5tQOfdL UewUi7BcPCz2j+3SQOsw9zErORpOKG8upDtcp/NscopCo2/VY0b1NRKPFIweZdJMofWs 75Vw== 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=TUd8n7u/UUPVB3b37wzVjovX0jCBZiusP6VzYeWk1tg=; b=R/Iere+tjFHc0m+hEjlBUxp4H3V8GwwLkKXJPuIXeSfahZjb5ikgP5aj1pKJM5zt43 6zOcNTqRfyjqh0DI088JEm9dUh5hqtpHsRd2eZBja9W22g0WqH20X5pBDd79QDMSlXG0 EQ2AD3zKprGaBpkl1jZFdUNAv2qR+703+Mf3elvRVJpr3SzVtNce4XwhFGA323uJBahB E0PuYPmGZYquHkO9oDoSF3MF8/QaHCqYLTQovxVWte2XrRhwb5736Y91xwR/KhVOiB/R OBhx/KDJV52/bwxkH/xqx8Pypd2x1RSOvrDmOURr1SrX83rnb0PhhntyPYrsLHCFpCvB neXg== X-Gm-Message-State: APzg51AB2V79aVfGOaptpnWp4LloyV3sqxENhEHWhvQLyn3gGtRUG36p MhiBGE52off7epI4MuTBjoi4T4Ez X-Google-Smtp-Source: ANB0VdY3MntxjFmySGluwPhHEBRXdMMmFu15KQsuDeWNUXAjXpMWkhVGV8xIZD+7Jc/RWCnJyk/L9w== X-Received: by 2002:a17:902:1a2:: with SMTP id b31-v6mr6720080plb.279.1535231379841; Sat, 25 Aug 2018 14:09:39 -0700 (PDT) Return-Path: <12348ung@gmail.com> Received: from [192.168.0.103] ([103.198.24.78]) by smtp.gmail.com with ESMTPSA id y7-v6sm11295384pff.181.2018.08.25.14.09.37 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 25 Aug 2018 14:09:38 -0700 (PDT) Subject: Re: [FlyRotary] Re: EGT thermocouple failure To: Rotary motors in aircraft References: Message-ID: <409a0c09-3a6e-bd3f-6e80-0370ba5ff8b3@gmail.com> Date: Sun, 26 Aug 2018 07:09:33 +1000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------5ADAA6460940C5900547E18C" Content-Language: en-US This is a multi-part message in MIME format. --------------5ADAA6460940C5900547E18C Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Steve,  I had 3 failures in about 50 hours, so simply forgot them as all they really told me was "it is rather warm in there".  Now I still know it is hot but really nothing I can do about it, so I am now in ignorant bliss.  Neil On 8/26/2018 6:30 AM, Bobby J. Hughes bhughes@qnsi.net wrote: > Steve > > That interesting. I have had some mild erosion at the tips with a > couple of probe failures.     Do you know what material the outer > shell is made of? I’m not sure about mine but I know inconel shells > are available. I believe 3/16” and 1/4” inconel probes are available > for pre-turbo applications vs 1/8”. > > Bobby > > Sent from my iPad > > On Aug 24, 2018, at 8:51 PM, Steven W. Boese SBoese@uwyo.edu > > wrote: > >> Several EGT thermocouples have failed internally during the last 500 >> hours of operation.  The failed thermocouple that I removed today was >> missing over an inch of the probe.  If it had been upstream of a >> turbo, the result would probably have been unpleasant. >> >> >> Steve Boese >> >> RV6A, 1986 13B NA, RD1C, EC2 >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: >> http://mail.lancaironline.net:81/lists/flyrotary/List.html --------------5ADAA6460940C5900547E18C Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

Steve,  I had 3 failures in about 50 hours, so simply forgot them as all they really told me was "it is rather warm in there".  Now I still know it is hot but really nothing I can do about it, so I am now in ignorant bliss.  Neil


On 8/26/2018 6:30 AM, Bobby J. Hughes bhughes@qnsi.net wrote:
Steve

That interesting. I have had some mild erosion at the tips with a couple of probe failures.     Do you know what material the outer shell is made of? I’m not sure about mine but I know inconel shells are available. I believe 3/16” and 1/4” inconel probes are available for pre-turbo applications vs 1/8”. 

Bobby

Sent from my iPad

On Aug 24, 2018, at 8:51 PM, Steven W. Boese SBoese@uwyo.edu <flyrotary@lancaironline.net> wrote:

Several EGT thermocouples have failed internally during the last 500 hours of operation.  The failed thermocouple that I removed today was missing over an inch of the probe.  If it had been upstream of a turbo, the result would probably have been unpleasant.


Steve Boese

RV6A, 1986 13B NA, RD1C, EC2
<EGT TC failure s.jpg>

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