> Reducing the taper to resemble a bubble will cost you in performance in > the > form of drag on the back of the canopy. That's probably why the KR2 went > to > the straight turtledeck. And plexiglas is probably heavier than your > average turtledeck material per square foot.
+++++++++++++++ Not sure that's right Mark - refer the 240 mph (2,000lb) GP4, T18 and Mustang II plus any number of modern designs that have concave curves in all planes. (Apogee??)
