After searching my notes and archives, I am unable to find it.. but at
Bill Eslick's get-together, one of the presentations dealt with cooling,
and some formulae were presented with regards to required area (per hp i
think) and I want to run my numbers on this end to get a feel for what I
am up against.

If anyone has that formula handly, or those files/attachments that dealt
with this subject, please post them here... or mail to me directly.

Dave Staten

Dave, I didn't attend Bill's get-together but can pass along some basic requirements. The long standing rule of thumb has been 2 cubic inches of radiator per HP.  Depending of the quality of the ducting you can vary that up or down. Obviously poor ducting requires more area, and proper ducting can reduce the required area. Don't plan on less unless you can test well before flight.

Bill Jepson