Spitfire prop pitch help

[reflected]

Hello,

I read throught the original pilots notes and I finally figured out how to manage the MKIIa's engine. However, I have trouble with the 2 pitch propeller of the MKIa. For landing and takeoff one has to set it to fine, otherwise it's coarse. But what about combat? What are the rpm/boost limitations?


Also, the naming is not accurate: Spitfire MKIa-s were equipped with constant speed prop from early july 1940. Still, ours have a 2 pitch one But then I don't understand what the difference between our MKI and MKIa is....



Thanks!