>The tests he did on his website are very interesting and possibly
encouraging to
>those of us who have a canard with a NACA duct already installed. (Read
that as not
>having to do a lot of work to add P-51 style ducts, etc).

Yep. Very interesting stuff. I noticed that he's running without any oil
cooler at all.
I also notice that he uses "turbulators" ahead of the NACA al la Eric
Westland as I'm planning to do. As he says, a bit of augmentation may help
too.

See http://home1.gte.net/res08ahw/vg/index.htm

> Any ideas about the possible cooling differences between a 160 hp Subaru
and a
>170 hp 13b?  My thinking is that they would require a radiator
approximately
>the same size?

That makes sense. Cooling requirements and HP tend to have a direct
relationship. I'm hoping to make well over 200 HP, so I guess I'll need
additional cooling.

Another interesting note on Als web site is the changing airflow depending
on attitude. It would be nice to have an on-dash reading of the airspeed
difference either side of the rad. This way you can adjust the attitude for
best cooling if needed.
John Slade
Cozy IV turbo 13B