Dan, I'll throw two potential choices out there. One is the neat way that Jim Hill did his. He put a screened inlet in his wing root for the intake, and ran a scat hose into the cockpit. He discovered that it sucked in oil fumes from the engine , so he moved them further outboard, so they need to be outside the prop arc. But you'd definitely get some air from something like this (see http://home.hiwaay.net/~langford/jhill.html , bottom photo). No doubt they don't need to be this big, and they will kill some lift, but they'd work! The other way is to install Cessna wing root vents (the sliding cans) into the floor, so that air blows up between your legs (out of the exhaust stream, obviously). This works great too and you can change the direction of the flow to point away from you if it's too direct, and is shown in the sixth photo from the top.
I think what I'm going to do is take outside air into a duct at one of the two cowling inlets next to the spinner (which are too big anyway) and duct it to a flapper valve mounted on the firewall (which is already installed), and will eventually put an outside/heated air mixer and exhaust stove on it for wintertime. My cowling is so smooth that I don't want to stick anything extra on it other than the inlets, so snagging air at the inlet will keep it clean. Mark Langford, Huntsville, Alabama N56ML "at" hiwaay.net see KR2S project at http://home.hiwaay.net/~langford
