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EGT indicator failure

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PMorel

Joined: 09 Jul 2007
Posts: 62
Location: Locust Grove, GA USA

Posted: Tue Aug 23, 2011 6:37 am Post subject: EGT indicator failure

Hi,

I have a Westach Quad instrument with one EGT indicator for my Rotax 912 Speedster.  I have 340 hours on it and my EGT indicator just seemed to quit working.  I use a hose clamp type probe and was wondering if anyone else has had a failure with this?  Do the probes go bad?  I put a ohm meter on the probe and it shows a little resistance across it between the two leads.  I also measured some voltage while heating up the end of the probe.  I have continuity from the each lead to the 8 pin connector.  Do the actual gauges go bad?

 

Paul Morel

912 Speedster

Locust Grove, GA



   

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_________________
Paul Morel
912 Speedster
Locust Grove, GA

www.WingsAirPhotos.com

redrocketrider

Joined: 13 May 2011
Posts: 67
Location: Nervino airport

Posted: Tue Aug 23, 2011 7:25 am Post subject: EGT indicator failure

Hello, Same system,  I just  replaced my probe as it was reading erratically, new probe fixed the problem, be  sure to get the short probe for your pipe size, mine had a spacer on it and  I  think that may have also contributed to the problem. Regards,  Bob

 [quote]      From: PMorel (pmorel(at)bellsouth.net) 

   Sent: Tuesday, August 23, 2011 7:32 AM

   To: kitfox-list(at)matronics.com (kitfox-list(at)matronics.com) 

   Subject: EGT indicator failure

   Hi,

   I have a Westach Quad instrument with one EGT indicator for my Rotax 912    Speedster.  I have 340 hours on it and my EGT indicator just seemed to    quit working.  I use a hose clamp type probe and was wondering if anyone    else has had a failure with this?  Do the probes go bad?  I put a    ohm meter on the probe and it shows a little resistance across it between the    two leads.  I also measured some voltage while heating up the end of the    probe.  I have continuity from the each lead to the 8 pin connector.     Do the actual gauges go bad?

Paul    Morel

   912 Speedster

   Locust Grove, GA

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_________________
Keep the dirty side down/Blue skies. Bob

PMorel

Joined: 09 Jul 2007
Posts: 62
Location: Locust Grove, GA USA

Posted: Tue Aug 23, 2011 7:47 am Post subject: Re: EGT indicator failure

Bob, 

That sure makes sense since I didn't have a spacer on my probe.  Maybe it bottomed out against the exhaust......I'll make a run over to Aircraft Spruce and see if they have a new probe in stock.   Thanks!



Paul

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_________________
Paul Morel
912 Speedster
Locust Grove, GA

www.WingsAirPhotos.com

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