I was in my archives for some other stuff and found this gem. The excerpt focuses on aft facing sugar scoops as installed for oil cooling exhaust on Long EZs. As you know this is a trouble spot on not only Long EZs but most pusher configured aircraft. This is out of the Long EZ build notes. Wasabi was able to verify these findings last year in flight test.
What are you working on tonight?
-Race 68
