Finn Lassen wrote:

One of my two $26 Westach probes broke after maybe 30 hours and the
other seems to be on the way out.

Does anybody have experience with the Alcor probes sold by AirCraft
Spruce for $59? Will they last more than twice as long as the Westachs?

Note: due to my muffler/exhaust design, the probes are located only 2.5"
from the engine.

Finn

Bill Freeman wrote:

My guess is that these probes are intended for max temps of std piston
engines, about 1500F.   My understanding is that the rotary exh temp
is much higher, probably the material is not up to the temp.  Find out
what the Alcor is made of, if possible.  Also, ask the company what the
max rated temp is.  You may have an insoluable problem if no commercial
need exists for a temp probe in the higher temp range.

Bill
Long EZ builder & pilot
mechanical engineer

Bill, http:/www.omega.com has a variety of extremely high temp props.
Some Inconel sheathed probes are rated to 2100 F.

Paul Lamar
 
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