<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.
"""

Interesting... on the Eagle we have dual TIT probes on the inlets of both turbines, one for the ECUs, one for the instrument readouts.  They seem pretty robust, although I think they are really nothing more than EGT probes but with a higher max range.  (I just had them out of one of the turbos and they looked just fine... the engine has about 12 hours on it, at varying power levels, maybe 15-20% of which is full power operation.)  I haven't had the opportunity to see what our TITs are at full power (it's too exciting when it's cranking out almost 600hp and I'm worried about dragging my town car down the taxiway) although I suspect they're up there at the 1600*F+ range, not quite as high as what we'd see on a rotary, but still pretty toasty.  Maybe it would be a non issue if they were made out of unobtainium.

   <marv>