You know I have been looking at the cooling system issue. and the
lengthy discussions about it.
Here is a simple solution that covers everything that has been  talked about
Will run anyway up without any loss or concern of loss of liquid.
Will allow and engine to run inverted for extended periods of time
without a problem.

I have made and used such systems on some of the racing engines I have
built in the past this just works.
You must a have pressure relief somewhere in the cooling system  should a
major failure occur somewhere else in the cooling system otherwise the
radiator will be the thing the gives in.

Liquid section must be at the top when bleeding the system the  floating
piston should be at least at center of the cannister when the  engine is
cold.

Regards David Gaze

David, what are the dimensions of this can?

Dave,  I believe you stated that this system is already installed in
some race cars and working well?  Assuming your answer is YES then I
don't see any difference between an automotive and aircraft
installation since the system is sealed from the outside air. In
other words, if it works in a car, it will work for us too.   It
seems  a thick wall 2 or 2.5  inch  dia aluminum tube about 12 inches
long  (just guessing) would be a good canister.  How would one know
how much coolant is in the canister?  What happens if the seal
between the air and water is compromised?  For  your answer assume it
happens at night, over the mountains.   I am very interested  thus
far.      Jerry


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