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From: <cardmarc@charter.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: turbo EGT probes
Date: Mon, 10 Jan 2005 18:54:39 +0000
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Not for the higher rotary exhaust temps......tit's typically were ok in piston engines with their lower temps....no telling what will happen with the rotary...
Marc
> From: Jim Sower <canarder@frontiernet.net>
> Date: 2005/01/10 Mon PM 05:16:23 GMT
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: turbo EGT probes
> 
> Rather than EGT probes, check around for TIT probes.  Since they all 
> reside just upstream of some turbine. one would expect them to be more 
> robust (read expensive?) than EGT probes.
> At least they are intuitively more appropriate ... Jim S.
> 
> David Staten wrote:
> 
> > Putting the EGT after the turbo will not give true accurate results. 
> > Some of the heat energy of the exhaust is converted to mechanical 
> > energy and the tailpipe gases are of a lower temp... I'm surmising a 
> > few hundred degrees less.. One of the turbo calculator spreadsheets 
> > that was making the rounds actually displayed this Delta T as one of 
> > its calcs.
> >  
> > Now, I DONT know if the relationships stand up "post" turbo (peak, 
> > lean of peak, range of variance of temps).. one would think they 
> > would.. but that is a guess on my part.
> >
> > Dave
> >
> > cardmarc@charter.net wrote:
> >
> >>Only problem is that if a tip piece of the probe breaks off, it will go thru the turbine and make a mess. Just a thought. Many people only put one probe after the turbine because of this possibility. I do not have any firsthand experience with this happening but have heard of it.
> >>Marc W
> >>  
> >>
> >>>From: Bulent Aliev <atlasyts@bellsouth.net>
> >>>Date: 2005/01/10 Mon AM 01:51:58 GMT
> >>>To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> >>>Subject: [FlyRotary] EGT probes
> >>>
> >>>Hi Guys, 
> >>>I removed my turbo manifold today for ceramic coating, so I want to install
> >>>two EGT probes, one for each rotor. I want to drill and tap into the cast
> >>>iron manifold about 1" away from the exhaust ports. My questions are:
> >>>1. Any draw backs?
> >>>2. Recommendations for probes that will stand up to the heat in this
> >>>location and will work with the EM2.
> >>>
> >>>My engine starts instantly every time. At the beginning I kept the mixture
> >>>knob to the center position. Any movement to the left and the engine would
> >>>stumble. Now I'm noticing the knob is fully to the left and it is rich. Not
> >>>too rich but more than before? I guess it is time to get into the
> >>>programming stuff?
> >>>I'm drawing big crowds at the airport with this engine. Today I had to put a
> >>>yellow rope on the hangar doors so I can work. Handed chairs to the old
> >>>timers, the youngins had standing room only :)
> >>>
> >>>Buly
> >>>
> >>>
> >>>    
> >>>
> >>>>> Homepage:  http://www.flyrotary.com/
> >>>>> Archive:   http://lancaironline.net/lists/flyrotary/List.html
> >>>>>        
> >>>>>
> >>
> >>
> >>  
> >>
> >>>> Homepage:  http://www.flyrotary.com/
> >>>> Archive:   http://lancaironline.net/lists/flyrotary/List.html
> >>>>      
> >>>>
> >>
> >>  
> >>
> >>>  Homepage:  http://www.flyrotary.com/
> >
> >>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
> >
> >
> >  
> >
> 
> >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
>