Spit IIa is now so much more inferior to the 109

[NZtyphoon]

Originally Posted by Crumpp

Obviously the RAF was comfortable enough to test it at 12,500 feet on 9-6-39 Merlin III serial number 7491 mounted on Spitfire N3171 up +10.55lbs using 87 Octane fuel.

And how the heck can an aircraft which was built in November 1939 manage to fly engine tests in June 1939?

http://www.spitfires.ukf.net/p003.htm