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GRT standard probes.

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rene(at)felker.com
Guest

Posted: Sat Oct 20, 2012 7:59 am Post subject: GRT standard probes.

David, how have the EI probes worked out for you?  I have already replaced two of the original probes and over the past 5 hours have lost (or starting to loss) three more.  I have ~250 hours on the engine.  The EI Probes are a little pricey …… so want to make sure I am not going to have “other” problems.   If they last 500 hours, they would be about the same price based on the failure rates of the GRT probes….

 

Thanks in advance for any advise.

 

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of DLM

Sent: Tuesday, August 24, 2010 9:29 AM

To: rv10-list(at)matronics.com

Subject: GRT standard probes.

 

I started flying with 6 standard EIS 6000 probes. I have had five failures in 310 hours. I don't know whether it is just a bad batch or what. I have three of their higher quality probes (white taped leads) which were their replacements and they have not failed yet, but they have less than 150 hours on them. The latest failure occurred last Saturday and since I had already ordered a set of EI P-110, I am going to change them all as opposed to changing them individually every 50-100 hours. So far my failures occurred at <200, 210, 250,278,and 310 hours. Temperatures were normally 1375-1420 (as measured by the EIS) and located 2" from the exhaust flange. My previous experience with probes is 2000 hours on Insight GEM 603 with one failure and 530 hours on an EI SU8A with no failures. Has anyone else had any EGT probe difficulties? 

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Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Sat Oct 20, 2012 1:01 pm Post subject: GRT standard probes.

I have the EI fast response EGT probes on my Mooney. I'm guessing maybe 

2-300 hours on them. Main difficulty is probe wires and the connectors. 

Have to have good connections, and they are very prone to wire fatigue 

breaks if not adequately protected from vibration, especially at the 

connections. Probes themselves have been fine, installed 1.5 inches from 

exhaust flange..normally 1400-1475 peak temps.



On 10/20/2012 8:58 AM, Rene wrote:

 	  Quote: 	
		  

 David, how have the EI probes worked out for you? I have already 

 replaced two of the original probes and over the past 5 hours have 

 lost (or starting to loss) three more. I have ~250 hours on the 

 engine. The EI Probes are a little pricey …… so want to make sure I am 

 not going to have “other” problems. If they last 500 hours, they would 

 be about the same price based on the failure rates of the GRT probes….



 Thanks in advance for any advise.



 *From:*owner-rv10-list-server(at)matronics.com 

 [mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *DLM

 *Sent:* Tuesday, August 24, 2010 9:29 AM

 *To:* rv10-list(at)matronics.com

 *Subject:* GRT standard probes.



 I started flying with 6 standard EIS 6000 probes. I have had five 

 failures in 310 hours. I don't know whether it is just a bad batch or 

 what. I have three of their higher quality probes (white taped leads) 

 which were their replacements and they have not failed yet, but they 

 have less than 150 hours on them. The latest failure occurred last 

 Saturday and since I had already ordered a set of EI P-110, I am going 

 to change them all as opposed to changing them individually every 

 50-100 hours. So far my failures occurred at <200, 210, 250,278,and 

 310 hours. Temperatures were normally 1375-1420 (as measured by the 

 EIS) and located 2" from the exhaust flange. My previous experience 

 with probes is 2000 hours on Insight GEM 603 with one failure and 530 

 hours on an EI SU8A with no failures. Has anyone else had any EGT 

 probe difficulties?



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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

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