It might not be
too surprising about the oil temp varying as it does. The key as you
mentioned is the power load. Here's my thinking. Since the oil is
the primary cooling medium for the rotors where the power is produced, it would
seem to me that a rise in temperature (due to a power increase) would first be
localized to and noticed in the oil - before some of the
increased heat perhaps diffused over to the coolant system. Thus
a surge in oil temperature as the power increases may well result in a larger
temperature drop until it reaches thermal equilibrium
again.
Hi
Ed;
This makes sense. Another factor
that I have no way of measuring is that I had my rotor faces ceramic coated when
I rebuilt the engine. This is supposed to reduce heat transfer to the oil and
they claim up to 2 hp increase. I have severe doubts about this but I reasoned
that reduced oil heating results in reduced cooling, requiring less cooling area
= less drag which is as good as free hp.
Yet another factor that I could
measure is the oil temp return from the turbo charger. I really need an EM2
:-)
S. Todd Bartrim
Turbo 13B RV-9Endurance
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm
"Whatever you vividly imagine, Ardently desire, Sincerely believe in,
Enthusiastically act upon, Must inevitably come to pass".
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