I made my eight flight today, and I'm happy to report that my inlet scoop
augmentation on the Cozy did the trick.
I flew only about 1/2 hour because I had some other work that I wanted to do
on it, but the temperatures ran at 190 coolant, and 200 oil.
I climbed up a couple thousand feet, and instead of  throttling back and
watching my temperatures come back down from 210/220, I wasn't quite up to a
stabilized temperature yet.  That was a big change.  I pulled power back to
what I had been running previously, and the temperatures stayed the same,
maybe dropped a little.  I then throttled up to zero boost, and the
temperatures held.  YEAH !!!!!  They used to climb up with the throttle.
On the decent to landing, I thought that I would have to chip the ice off of
the engine.  Coolant dropped almost off the gauge to about 140, and oil down
to 160.  Actually when I touched down, they were even lower than that.

Now that I know that I can cool it, I'm going to make another scoop,
narrower on the sides, but a little taller (actually lower) to get a little
further outside the boundary layer.  The next scoop will have a smaller
inlet area compared to the current one.

Steve Brooks
Cozy MKIV N75CZ
Turbo Rotary




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