The Harrison built (same as Corvette radiator) used in air conditioning
in full sized GM cars are designed to flow a major amount of air. They are
cheap even when bought new. They transfer heat as good as anything you can
find. They are compact. Two of them can dump the heat from most any rotary
installation. Two of them for coolant and one for oil has been proven in a
number of installations.
If you want less cooling drag build the radiators into the wing skins
like a Supermarine racer.
I raced for years with one Harrison core for oil cooling in front of the
water radiator. A poor installation with heated air going through the water
radiator, but it worked just fine.
Lynn E. Hanover
Lynn,
Good information- what size are they? and how come these air conditioning
cores take the pressure so well?
George ( down under)