wep on RAF planes awol???? boost levels??? no 100 octane fuel:(

[Osprey]

Spitfire: The History

According to RAE trials 12lbs boost would reduce engine life to 10 hours at 3000rpm ground level.

Following trials of 95 and 100 fuel, the decision to supply 100 Octane fuel was made on 16 March 1939. 16 fighter and 2 bomber squadrons were supplied by September 1939

Merlin II produced 1030hp @ 16250ft (42.6" MP) and 1160hp @9000ft (54.3" MP)

Trying to find some performance figures from the Supermarine trials.

[Osprey]

OK, Handling trials held for gun configuration, Martlesham Heath 20th July 1939

K9787 (8 brownings)
Merlin II, 2 blade wood fixed:
time to 20kft = 9.4min
Speed@18.5kft = 363 mph
CEILING = 31,900

K9783 (8 brownings)
Merlin II, 3 blade DH 2 pitch (5/20 bracket):
time to 20kft = 11.4min
Speed@18.5kft = 367 mph
CEILING = 34,400

L1007 (2 hispano, no brownings at all)
Merlin III, 3 blade DH type 5/21 bracket (that is not a CPS unit, it's a later 2 speed bracket for the Merlin III):
time to 20kft = 10.7min
Speed@18.5kft = 364 mph
CEILING = 34,500


So, there's not a massive difference between the types. The difference is in take off distance, acceleration and pilot workload. All spitfires were converted to the 5/29 and 5/30 brackets for CPS during June and July 1940

[Biggs]

Originally Posted by Osprey

OK, Handling trials held for gun configuration, Martlesham Heath 20th July 1939

K9787 (8 brownings)
Merlin II, 2 blade wood fixed:
time to 20kft = 9.4min
Speed@18.5kft = 363 mph
CEILING = 31,900

K9783 (8 brownings)
Merlin II, 3 blade DH 2 pitch:
time to 20kft = 11.4min
Speed@18.5kft = 367 mph
CEILING = 34,400

L1007 (2 hispano, no brownings at all)
Merlin III, 3 blade DH type 5/21 bracket (that is not CPS!):
time to 20kft = 10.7min
Speed@18.5kft = 364 mph
CEILING = 34,500

yep... well the mkIs in this game dont really come close to that.. i got 260IAS @18ooo with the mkI... but thats still about 20 IAS off.

def needs MOAR BOOST!!!!