Bruce,

Your sketch in post #6 is way cool! I have a foamy on the bench right now that needs to have that treatment added ... maybe not on elevator but on rudder f'sho.

Tall Paul,

Hmmm, your sketch (post #8) shows leading edge down, trailing edge down. No question, that will generate a ton of upward lift (down elevator) as long as the airplane is level and moving forward. But won't it be self-limiting after a few degrees of nose-down pitch? Seems like the traditional flat airfoil/flying stabilizer arrangement, or Bruce's arrangement, would be better for Lomcevaks or other maneuvers where you want the airplane to keep rotating nose-over-teakettle.

But I'm not an aerodynamicist -- just a serial airplane abuser.

Duane Gall
RCPRO