[lane]

Originally Posted by Kwiatek

The most common Spitfire MK1-MK2 version should be:

Spit MK1 Merlin III ( pre BOB version) - 2 stage DH prop pitch, +6 1/2 lbs (87 octan fuel), no armoured windshield and no pilos armour ( the fastest SPit Mk1 at FTH but worse climb rate )

Spit MK1 Merlin III ( BOB version -could be MK1A) - CSP DH , +12 lbs ( 100 Octan), armoured windshield ( the fastest Spit MK1 at low level, good climb rate)

Spit MK2 Merlin XII - CSP Rotol, +12 lbs ( 100 Octan), armoured windshield and pilot armour)

Similar should be with Hurricanes:

Hurricane MK1 ( early) - 2 stage DH prop, +6 1/2 lbs ( 87 octan fuel)

Hurricane MK1 ( late) - CSP DH2, +12 lbs ( 100 Octan), armoured windshield ( pilot armour)

+1
(Although I don't really see much point in the 87 octane set up except maybe for Hurricanes in France during the phoney war period).