The stall speed is when the wing stops producing enough lift to keep the aircraft in the air. The analysis linked was done on the Spitfire MkIX which could out turn the Fw190, however this had identical wings to the MkV which was lighter and could only out turn the Fw 190 in instantaneous not sustained turn. The more powerful engine of the Mk IX made it not only faster and better climbing but it also turned better too because a turning aircraft has a massive increase in drag. The P 51 also stalled fairly harshly in heavy turns but was helped by using a few degrees of flap.I see your points Greg and they are well taken but in general doesn't wing loading have an effect on stall speed? Let's say you normally fly your FW-190A-8 in a "clean" configuration but you suddenly get orders and are tasked to carry a 500KG bomb on your centerline mount. Wouldn't that raise the stall speed of the machine? I'm just thinking basic physics here, but maybe I'm missing something with how the shape of the airfoil and it's loading effects when an aircraft enters a stall. I was also under the assumption that with any given airfoil shape more wing area = more lift = lower stall speed (weight of the machine being unchanged). Am I out in left field on this one too????