Mike Wills wrote:

Alan,
 Great to see you on this list. I spoke with you and Everett at great
length at Copperstate a couple of years ago (and probably bored you to
tears). Regarding your opinion on radiators, I agree. Another issue not
often discussed when considering one versus multiple rads is failure modes.
A single radiator with one inlet and one outlet has a much lower parts
count, fewer hoses and hose connections, and in my opinion far less
potential for failure because of this.

 I plan to use the configuration you describe for my RV-4. The dimensions
you mention are very similar to an off the shelf Griffin radiator. Their
drag racing Scirroco style radiator is a 22 X 13 X 2 (or 2.5 depending on
which one you want). Its a double pass unit and is in stock for $214.95
($239.95 I think for the 2.5 inch core) from Summit racing equipment. I'm
just wrapping up fuselage construction and dont have my gear/engine mount
installed yet, but my prelim measurements seem to indicate that this will fit.

 What did the Powersport -3 and -4 use for oil coolers? Also wanted to ask
if there are any articles/pictures available that show installation details
of the engine and cooling system in the Powersport -4? The local EAA
chapter has a pretty good library of back issues of most mags but I gotta
know where to look. Ive already got a pretty good collection of you -3. I'm
new to this list so if this has been covered in the past and you wish to
avoid repeating to the entire list feel free to contact me off-list.

Thanks,

Mike Wills
willsm@manta.spawar.navy.mil

Mike are you using the 11 inch long Ross PSRU and/or modifying
the cowl?

Paul Lamar
 
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