If
I'm lucky to get on the
runway
without waiting and start the roll with 180-190F I'm happy
camper.
But if I have to wait behind few planes, I have to takeoff
with
200-210F and very soon at 1000 feet start pulling the power back
at
220F. I'm installing misting system like Tracy. Today
bought
the
pump,
but have not installed it yet.
In
my short hours in cruise I see 160F water and 137-140F oil temps.
My
goal is to do something for the ground an takeoff cooling.
Buly
CZ
MK-IV 13B Cosmo NA
Buly;
With a
pusher, ground
cooling is a bit tougher. Although the negative pressure created by
the
prop would keep my coolant temps down OK when OAT was 60, at higher
temps my
results were like yours. I installed a SPAL 10” high performance
fan on the inside of my rad. http://www.jaycorptech.com/showproduct.aspx?productid=11&categoryid=2
.
I can now
pretty much
taxi and wait at idle indefinitely and keep the coolant at 190F or
less. That
also keeps the oil temps under about 200F, even though the fan provides
no
additional air flow for the oil cooler. I typically turn on the fan
somewhere during taxi, and turn it off as I’m cleared onto the runway.
It
alleviated the anxiety of ground operations on a warm day.
I also
tried a water
spray system on the oil cooler for ground operations, but for whatever
reason
did not find it to be very effective. I think the reason is the fins
and
tubes are relatively vertical, and the water was not well misted so
much of it
would run through without evaporating.
Al
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