Spit1a > SpitII
 

Does anyone know the difference in performance...quick answer :)

Same engine/boost etc?

cheers

No Spitty fans here...? ;)

I play online and no servers run the Spit2 since apparently its faster AND more manueverable than the 109, if that helps. Also, the Hurricane>Spit1a since it accelerates faster, climbs better and is faster in level flight by around 15-20 MPH.

The Spit II and Bf-110 are the only ones getting historical performance at the moment (even though the 110 is modeled with the weaker engine variant when many were fitted with the better BD601Ns, it gets more or less correct performance for the engines it uses) ,almost everything else is slower than it should.

That should easily answer you question, Spit Mk.II is probably the best all around performer in the sim for now, until the rest of the FMs are adjusted and we get Mk.I variants with constant speed props.

I understand that but how much difference in RL which obviously will/should be in game was the performance between Spit1a to the SpitII and also do we know how much in game the 109 is underpowered?

Guess I thought I'd get a quick responce without trolling through loads of threads. Doesn't matter that much, just interested for future reference

Spit Ia feels a bit weird, setting prop-pitch to coarse rpms drop down to just under 2000, and I can't seem to get faster than 240mph in level flight at aboout 1000m height...

In real life, there was no appreciable performance difference between the Spit I and II, as long as they had the same equipment, and same boost, fuel etc.

The airframes were very similiar, and the engine output was almost the same, the Spit II's Merlin had a marginally higher altitude performance, and a consequence, worse low altitude performance. But as I noted, the difference was completely insignificant - similiar differences were there between various Bf 109E variants with the old type and new type supercharger, for example. Both had pilot armor, armored windscreen and were (retro)fitted with CSP during the Battle. IMHO the only 'major' difference was the different starter system of the Mark II.

In the game the difference is due to that the Spit I variants appear to be modelled with 87 octane and lower engine outputs, while the Mark II with 100 octane and considerably higher engine outputs. Again in real life both types operated on both types of fuel, and then performance was similiar.

Thanks for the replys fellas...

I like this bit :D

Royal Aircraft Establishment at Farnborough
June 1940
Spitfire IA K.9791 with Rotol constant speed propeller
Me 109E-3 Werk-Nr 1304
Comparitive trials between the Me 109E-3 and "Rotol" Spitfire IA

1. The trial commenced with the two aircraft taking off together, with the Spitfire slightly behind and using +6 1/4 lb boost and 3,000 rpm.

2. When fully airborne, the pilot of the Spitfire reduced his revolutions to 2,650 rpm and was then able to overtake and outclimb the Me 109. At 4,000 ft, the Spitfire pilot was 1,000 feet above the Me 109, from which position he was able to get on its tail, and remain there within effective range despite all efforts of the pilot of the Me 109 to shake him off.

3. The Spitfire then allowed the Me 109 to get on to his tail and attempted to shake him off this he found quite easy owing to the superior manoeuvrability of his aircraft, particularly in the looping plane and at low speeds between 100 and 140 mph. By executing a steep turn just above stalling speed, he ultimately got back into a position on the tail of the Me 109.

4. Another effective form of evasion with the Spitfire was found to be a steep, climbing spiral at 120 mph, using +6 1/4 boost and 2,650 rpm; in this manoeuvre, the Spitfire gained rapidly on the ME 109, eventually allowing the pilot to execute a half roll, on to the tail of his opponent.

5. Comparitive speed trials were then carried out, and the Spitfire proved to be considerably the faster of the two, both in acceleration and straight and level flight, without having to make use of the emergency +12 boost. During diving trials, the Spitfire pilot found that, by engageing fully coarse pitch and using -2lbs boost, his aircraft was superior to the Me 109.


About the Spit II numbers
Deliveries of Spitfire IIs began in June 1940. No. 611 fully converted to Spitfire IIs in August 1940, thus being the first squadron to become fully operational with the type. Nos. 266 and 74 followed in early September, with Nos. 19 and 66 switching during the latter half of the month. In October, it was 41 and 603 squadrons turn, bringing to 7 the number of squadrons to fully equip with this varient during the Battle of Britain.