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Joe Hull wrote:
- At the 1550 RPM the MicroTech says manifold pressure is 9-10Hg
(18-20PSI). Does that sound reasonable?
The InHg sounds reasonable (from someone who
hasnt run a rotary). The 18-20 PSI figure does not, even though you are
considering them equivalent. 9-10 InHg is 1/3rd of atmospheric. 1/3'rd
of atmospheric in PSI should be about 5 psi. Just looking at it from a
math standpoint, unless I'm missing something here.
- EGT’s are 2000-2050F. Seems a tad high to me!! My
EGT probes are located about 2.5” from the rotor housing.
When I shut it down my exhaust manifold/muffler was a very
nice glowing red. It’s made out of Inconel and is .06 thick so it seems to hold up
pretty well. But if it’s like this at 1600RPM
what’s it going to be at 5800RPM??
Everyone else I have heard from has reported
peaks of 1700 or so degrees. My secondhand, unexperienced guess leads
me to believe you have calibration issues.
Cooling seems to be OK at
the moment. When ever it gets to 212F I’ve got
the MicroTech setup to turn on my radiator
fan and it
immediately heads down and goes to 180F in 1-2 minutes.
Oil temps never got above 150F. But we
are in Washington and the air
temp was between 45F and 50F so I’m sure that helped.
Keep the news comin... Chris and I are
approaching startup. The prop arrived the other day, have the EC, the
fuel pumps, radiators, etc..
Dave
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