Spit IIa is now so much more inferior to the 109

[Kurfürst]

Originally Posted by 41Sqn_Banks

The source for each line is given and all of them are available in the internet. So it shouldn't be a problem for you to check the values and report any anomalies.

The V15a figures depicted in the William's graph are showing the aircraft down on power. As per the report the aircraft engine was down on power (by 45 PS), and the results were corrected to the nominal engine outputs. With the corrected output, speeds were 498 km/h (309 mph) on the deck and 574 km/h at 4800 m (356 mph at 15750 feet). See:

http://kurfurst.org/Performance_test...w_109V15a.html

Originally Posted by Kwiatek

For Spitfire we have:
12lbs - 5 minutes emergency power
6 1/2 lbs - 30 minutes continous power

6 1/2 lbs at 3000 rpm was 5 minute power, not 30 min on the Spitfire. 6 1/2 at 3000 lbs was a "climb" power but only with the rpm reduced to 2800.

This one is more realistics, with some of the 'accidentally omitted' added.