I had this idea last year when I built this one. The problem on speedbrakes on the gear you could only use half the SB because it would stick down when the gear is up. If you compair the speedbords on the BVM Bobcat, the gear folds straight back unlike the Stringray.I am thinking on my second Stringray that I am building I might put Pop up speedbrakes on top of the wing.using spring loaded air-cylinders.Something else I encountered was I needed a Lot of deflection on the elevators to brake ground,I wounder if the CG could be moved
forward about 1 inch, We will see. Paul JPOFL:idea: