 The gentle stall and good control under "g" of the Bf 109 were of some importance, as they enabled the "Luftwaffe"' pilot to get the most out of the aircraft in a circling dog-fight by flying very near the stall.The Bf 109 used leading edge slats which automatically deployed prior to stalling, but also made it much more difficult to continue chasing either a Hurricane or Spitfire with a tight turn in aerial combat manoeuvres, from the slats intermittently opening in tight turns (on the wing to the "inside" of a turn) during dogfights.The Rolls-Royce Merlin engine of the British fighters had the drawback of being equipped with a float-type carburettor which cut out under negative "g" forces.