Al Gietzen wrote:

 I think the side channels should be one piece

about 2 3/4" covering both rows and supporting the upper tanks;and a

width

of 3/8" would be plenty strong

Bad idea Al. You don't want those channels covering both rows. You don't
want any heat transfer between front and back. You want separate cores
with separate fins. A common fin two row core would defeat the design. I

am

going to use 1/4 inch plywood in there to tie them together as it is good
structurally and has a low heat transfer coefficient.

The radiators I know the side channel does not connect to the core; only to
the end tanks; so heat transfer there would not be a problem, and
structurally it would be sound.  Good point on the core, although I wonder
how much heat would be carried across by the fins compared to the heat
rejected by the tubes and fins in each half.

Ron Davis said today that he is not quoting on any of the counterflow rads
until he completes some experiments.

Enjoy the Fly-in!

Al

 
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