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					Originally Posted by  Holtzauge
					 
				 
				That tabs pretty well with the 1.4 Km/h that Harri and I calculated for the Mustang previously and shows that weight within reasonable bounds is not an issue at low level high speed flight. 
			
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 I got pretty much exactly same values as the chart at sea level varying the weight. At FTH I got slightly lower reduction than chart but difference is not big, at 3500kg a bit over 1km/h. Given that at clean configuration the weight was never that high, the estimation appear to work pretty well 
