Spit IIa is now so much more inferior to the 109

[Kwiatek]

There is definilty bug in SPitfire MK II engine.

According to manual Spit MK II should have power settings:

- climbing power (30 minutes) - +9 lbs at 2850 RPMs
- max all level (5 minutes) - 9 lbs at 3000 RPMs

In Clod there is engine broken after flying at +6 1/2lbs at 2850 RPMs after ab. 10-15 minutes continous flying

If you apply +9 lbs at 2850 RPMs you could fly ab. 2-3 minutes then engine broke.

It is not correct that you cant even fly 30 minutes at 6 1/2 lbs 2850 RPMs if you should be able to fly such time with +9lbs 2850 RPMs.

Other hand Bf 109 E could fly all time at 1.35 Ata power settings without problem if it was only 5-minutes emergency power.

[5./JG27.Farber]

Spit II didnt really enter mainstream service untill AFTER the BoB...

Originally Posted by Kwiatek

There is definilty bug in SPitfire MK II engine.

According to manual Spit MK II should have power settings:

- climbing power (30 minutes) - +9 lbs at 2850 RPMs
- max all level (5 minutes) - 9 lbs at 3000 RPMs

In Clod there is engine broken after flying at +6 1/2lbs at 2850 RPMs after ab. 10-15 minutes continous flying

If you apply +9 lbs at 2850 RPMs you could fly ab. 2-3 minutes then engine broke.

It is not correct that you cant even fly 30 minutes at 6 1/2 lbs 2850 RPMs if you should be able to fly such time with +9lbs 2850 RPMs.

Other hand Bf 109 E could fly all time at 1.35 Ata power settings without problem if it was only 5-minutes emergency power.

Did you have radiator fully open?

[Kwiatek]

Originally Posted by 41Sqn_Stormcrow

Did you have radiator fully open?

Yep always full open.

[robtek]

I flew the spit2 all out (+8lbs) at 2650 rpm across the channel, had a dogfight and flew and back, without engine trouble

[Kwiatek]

Originally Posted by robtek

I flew the spit2 all out (+8lbs) at 2650 rpm across the channel, had a dogfight and flew and back, without engine trouble

Should be possible to fly up to 30 minutes at + 9lbs and 2850 RPM. Actually it is not possible to fly even at +6 1/2 lbs at 2850 RPMs for 30 minutes.

What btw about the performance of the other planes, the 109s, the G50, the 110 and the bombers? How far off mark are they? (I am loosing track ... )

[von Brühl]

If it was done at Pas de Calais per most of the online servers, this can be accomplished in under 30 minutes.

[41Sqn_Banks]

Originally Posted by Kwiatek

There is definilty bug in SPitfire MK II engine.

According to manual Spit MK II should have power settings:

- climbing power (30 minutes) - +9 lbs at 2850 RPMs
- max all level (5 minutes) - 9 lbs at 3000 RPMs

In Clod there is engine broken after flying at +6 1/2lbs at 2850 RPMs after ab. 10-15 minutes continous flying

If you apply +9 lbs at 2850 RPMs you could fly ab. 2-3 minutes then engine broke.

It is not correct that you cant even fly 30 minutes at 6 1/2 lbs 2850 RPMs if you should be able to fly such time with +9lbs 2850 RPMs.

Other hand Bf 109 E could fly all time at 1.35 Ata power settings without problem if it was only 5-minutes emergency power.

I don't know if you had a look at the merlin em files so far. I've looked at them a year ago, so maybe this has changed, but at that time the Merlin III and XII were very identical. The nominal rpm was 2600 RPM for both. I assume that normal rpm is the value that can be maintained without critical overheat.
My impression is that the Merlin XII - as we have it know - is modeled more like a Merlin III running 100 octane (with +8? instead of +12 emergency boost).

[Kwiatek]

Originally Posted by 41Sqn_Banks

I don't know if you had a look at the merlin em files so far. I've looked at them a year ago, so maybe this has changed, but at that time the Merlin III and XII were very identical. The nominal rpm was 2600 RPM for both. I assume that normal rpm is the value that can be maintained without critical overheat.
My impression is that the Merlin XII - as we have it know - is modeled more like a Merlin III running 100 octane (with +8? instead of +12 emergency boost).

Hmm i didnt look at emd file for CLod yet. But if it is true like you said so there is obviously error in engine data which probably casue problem with Merlin XII power limiation in game.

Luckly i checked today spitfireperformacne site and i found interesting data for Merlin III at 87 octan fuel which i didnt see before:



So for Merlin III at 87 octan fuel we have:

max take off - +6 1/4 at 2850 RPM
climbing - +6 1/4 at 2600 RPM
All-out level flight - +6 1/4 at 3000 RPM

With 100 Octan fuel modification Merlin III power settings was rised to:



So with Merlin III at 100 Octan we have:

take off - +6 1/4 at 3000 RPM
1/2 hr climbing - +6 1/4 at 2850 RPM ( below 20 000 ft) and at 3000 RPM (above 20 000 ft)
all-out level flight - +6 1/4 at 3000 RPM ( 5 minutes)
emergency power - +12 lbs at 3000 RPM ( 5 minutes)


Of course for Merlin XII nomial RPM should be 2850 not 2600 the same like with Merlin III at 100 Octan fuel.