[IvanK]

What do you expect it to do STOP ?

Try starting in Level 1 G flight, max Boost about 10-15degrees nose up. Roll inverted and fly at -1G holding the canopy on the Horizon. It doesnt take long to end up with about 5RPM (counting the blades ... there is not much power being developed here), Roll back to 1G flight Engine eventually recovers as it should, You have wind milling RPM, Fuel, Ignition all you need so after 5 or so seconds it recovers..... as it should.

We now have both a Spitfire and Hurricane that allow normal GF type control inputs without a cough .... we couldn't do that previously. If you push a little more then the coughing and power drop occurs. IMO this is far closer to reality than what we had before. It also now matches a whole lot better to the descriptions of the effects by 2 accounts from current Early model Hurricane pilots in the original thread. ...:

"First, I can tell you that it does not require negative g to make the engine suffer from a shortage of fuel supply; a significant reduction of g down to, say, 0.3g can be enough to make the engine misfire. This can be experienced towards the top of a wing-over but I would estimate that the reduction in g needs to be maintained for 2 seconds or more before there are any effects. Undoubtedly, if the reduction in g was greater (to less than zero g) and particularly if the bunt was abrupt then the effect could be instantaneous. I have never, though, experienced any misfiring in turbulence; albeit, were the turbulence severe enough to produce g spikes to less than zero g, I would not rule out the possibility of the odd cough from the engine. Of interest to you I am sure is that on recovery from an episode of fuel starvation the engine recovers through a short period of over-richness shown by, I would estimate, up to a second of black, sooty exhaust before normal combustion is resumed."

No mention here of the engine stopping, also the pilot considers around 2 seconds of exposure before any real effects are noticeable. Again what we have is pretty close to this description.... certainly a whole bunch better than what we had before.