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I believe that oil/water heat exchangers might be justified in an aircraft installation if for some reason the lay-out precluded getting air to an oil cooler but did permit you to install a larger radiator capable of handling the heat load for the coolant and oil.  Otherwise, I don't believe they would work very well in most of our installations.  There could be exceptions of course.

 

 Ed Anderson 

 

 

Good points of course, but I still can't help but be drawn to the simplicity of having only one scoop, one duct, and one radiator.  Even as I type, I'm trying to figure out where I can put a bigger radiator (within cosmetic limits this time)  :-)    I'm even warming back up (so to speak) to the idea of using the stock 1st gen oil/water exchanger for the single rotor.  It was pointed out to me that the stock unit took hot water from the heater outlet, which doesn't really give the heat exchanger the best chance of success.

 

If I get Ken's oil/water exchanger, I'll be mighty tempted to hook it up to the current two radiators to see how it does on the ground.  Since I'm not opposed to changing out the evap cores, there might be a way to enlarge the capacity some.  Barring all that, it'll make a nice paperweight.  

 

Cheers,

Rusty (now collecting oil coolers instead of manifolds)