Don't remember hearing of the Valiant ever doing a roll off the top, Dick, just not enough grunt. (4 Avons). A barrel roll in even large aircraft is no big deal, done it many times in the 737 (in the sim!) Easy lesson, : 250 -275 Knots pull to about 25-30 degrees nose up, apply full power and full aileron, a little back pressure to keep positive G and apply full aileron. Over the top as the nose starts to drop ease the power off and resume level flight !! 757 wil do it too AND remain within G and IAS limits ! Just don't try it in the air, its a sackable offence !!!!

Anyone seen the demo in the 757 of the NZ Air Force, just shows what can be done with a light aircraft and stacks of thrust !

Regards, David Gladwin.

PS How about you Airbus pilots trying it in the sim too, your FBW should cope. ?