X-Mozilla-Keys:                                                                                 
Fred wrote:

Paul:

Later today I will repeat the analysis with the lower SFC numbers and check
to see if I get the right energy balance figures similar to those you
suggested.  Should I continue to assume that all the heat is dumped to the
radiator, or split some to the oil cooler?  One can effectively trade one
area for the other.  Mike said most are using a Mazda oil cooler sized 22 by
5 by 2.   This area can be deducted from the radiator frontal area assuming
that it is adequate.

F

I am wondering lately if the oil water heat exchangers used by some that
are flying are really worth while. I for one will not bother and 
merely use oil coolers. Probably two of Earl's supply rectangulars
fitted in the same cooling duct. The issue is coolant plumbing.
I don't want to use radiator hose so ridgid aluminum pipe with
wiggins fittings are my preferred choice. To complicate matters
by diverting some coolant flow to a oil water heat exhanger
may be more than most people want to address.

Paul Lamar
 
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