Speed graphs for Spitfire and Hurricane

Originally Posted by VO101_Tom

If the Hurri slower 30 mph, and the 109 slower 10-20 mph, then the difference is 20-10 mph... not 60.

The WEP have limits, we didn't testing with the new engine, but we notice, the cooling leak causes engine failure. It should testing the other systems before I say anything.

We notice a huge difference the old and the new FM. Have to learn to fly with all planes.The stall characterics changed drastically (the 109's too). Far worse agile, and far less stability on slow speed (and i like it. I just flew gliders, but the high AoA flight, the stall, spin and the wing flaps looks more real now). The spin is stronger, and hard to recover. No more tight turn with open flap (you dorp your speed quickly, and fall like a rock - particularly the Spit/Hurri's Split-Flap).

Actually to my understanding the flaps of the Spits and Hurris were only used for landing. Unsurprisingly because they really destroy any speed quickly. They are rather airbrakes than high lift devices considering their angle at which they are exposed to the air stream. For the seafire they used a trick to lock shortly and only once per flight the flaps to a halfway position for takeoff.

[Kwiatek]

I checked 109 sea level speeds and nothing change comparing to pre beta patch version.

109 E-3 (manual prop)/ E-4 auto prop

1.35 Ata at 2400 RPM - 450 kph at 0
1.45 Ata at 2500 RPM - 460 kph at 0

So i think there is no changes in FM of 109 ( also there is no info about it in beta patch notes). So still 109 is to slow ab. 20 km/h at 1.3 Ata power and ab. 20 km/h at 1.4 Ata - so generally 40 km/h slowier at the deck.

Moreover i checked british fighters in beta patch and i got:

Hurricane MK 1 Rotol

238 mph /383 kph at the deck at +6 1/2 boost ------ should be 262-265 mph /420-426 kph !!!!

So it is 24-27mph/ 38-43 kph too slow at + 6 1/2 boost power !!!!

There is no WEP - so no 100 octan fuel performacne - which should give ab. 25 mph/ 40 kph extra speed at low alts

Spitfire MK1a

255 mph/ 410 kph at the deck at 6 1/2 boost ---------should be 283 mph/455 kph !!!!

So it is 28 mph/45 kph too slow at 6 1/2 boost.

No 100 Octan fuel performance at all - boost cut out doesnt rise power at all.

Spitfire MK II

268 mph at deck at 6 1/2 lbs
285 mph at deck at 9 lbs ------ should be 286-290 mph so it is very accurate result!!!!

Still no 100 octan fuel performance - so no emergency +12 lbs.

P.S.

Test was made in the same map and settings over channel at near sea level, i checked different RPM settings, radiator etc. for all fighters and choose the best ones to achive the best results.

[bongodriver]

strange....I just couldn't get the mk2 spit above 240 mph at sea level

[Kwiatek]

Originally Posted by bongodriver

strange....I just couldn't get the mk2 spit above 240 mph at sea level

Are you sure it is MKII not MK1?? Cause i cant get MK1 above 240 mph at sea level - max speed 238 mph at 6 1/2 lbs.

SRY i made mistake in these post cause i miss Hurricane with SPitfire. Of course SPit MK1a in beta patch reach 255 mph at 6 1/2 lbs and Spitfire MKII reach 268 mph at the same boost.

[bongodriver]

Originally Posted by Kwiatek

Are you sure it is MKII not MK1?? Cause i cant get MK1 above 240 mph at sea level - max speed 238 mph at 6 1/2 lbs.

I will check again, sounds like thats what happened.

[klem]

Originally Posted by Kwiatek

Are you sure it is MKII not MK1?? Cause i cant get MK1 above 240 mph at sea level - max speed 238 mph at 6 1/2 lbs.

Kwiatek, did you make those tests off line or on line? Just curious because on line at 100 feet off Manston we couldn't get more than 248mph in Spit MkIa. Not that 8mph matters when its so far off.

Is there any way to check the atmosphere settings for on and off line? Is one or neither a 'standard day'?

[ATAG_Snapper]

Originally Posted by klem

Kwiatek, did you make those tests off line or on line? Just curious because on line at 100 feet off Manston we couldn't get more than 248mph in Spit MkIa. Not that 8mph matters when its so far off.

Is there any way to check the atmosphere settings for on and off line? Is one or neither a 'standard day'?

Hi Klem,

Here's what I got yesterday for the Spit Ia at sea level:

6.5 lbs, 2800 rpms: 245 online, 249 offline
6.5 lbs, 3000 rpms: 252 online, 253 offline

[CaptainDoggles]

Originally Posted by ATAG_Snapper

Hi Klem,

Here's what I got yesterday for the Spit Ia at sea level:

6.5 lbs, 2800 rpms: 245 online, 249 offline
6.5 lbs, 3000 rpms: 252 online, 253 offline

Did you try offline at 3000 RPM? Comparing different RPM settings is rather counter-intuitive.

[Insuber]

Originally Posted by ATAG_Snapper

Hi Klem,

Here's what I got yesterday for the Spit Ia at sea level:

6.5 lbs, 2800 rpms: 245 online, 249 offline
6.5 lbs, 3000 rpms: 252 online, 253 offline

May I ask how does it compare with historical test data?

[Kwiatek]

Originally Posted by klem

Kwiatek, did you make those tests off line or on line? Just curious because on line at 100 feet off Manston we couldn't get more than 248mph in Spit MkIa. Not that 8mph matters when its so far off.

Is there any way to check the atmosphere settings for on and off line? Is one or neither a 'standard day'?

Ups sry i made mistake Hurricane ( 238 mph) speed with Spitfire MK1 (255 mph).

I got 255 mph for Spitfire MK1a at sea level. Speed achived with acceleration in level flight not a dive.

All test i made was offline, single player mission, quick fly over channel.