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David Leonard wrote:
It's time to make some space under the engine for the new larger radiator and build the inlet. So I have made a couple mock-ups of potential designs that will allow for the new radiator.
I can't decide which I like better (or worse as the case may be), and am looking for input. Actually, I will just pick the one that more of you vote for, so that there will be less of you out there who are allowed to make fun of the finished product....
I call them the "Oh Cowl" and the "Smiley Cowl..."
Opinions?
-- David Leonard
Others have mentioned that the smile will try to ingest the boundary layer & isn't likely to be efficient. Others who have gone before have found that a 'snorkel' that reaches out to near the prop is much more efficient. (Kent Paser's book on the Mustang II that goes 240 on 160 hp comes to mind.)
I usually try not to offer technical opinions on stuff I haven't actually done myself, but I'll yield to temptation. :-) Have you considered working on the other end of the cowl, instead of installing bigger radiators & inlets? The guys who go really fast in RV's do it with stuff that's *inside* the cowl, *below the cylinders*, not the inlets. If you're interested, I'll pass on what Tracy Saylor told me about his cooling system (or you could probably ask him yourself, out there on the west coast). Also, take a long hard look at the cowls on the really fast Lancair Legacy Reno racers. I'm thinking about what's happening to the air after it leaves the 2 a/c cores most are using for water cooling.
Charlie
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