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View Full Version : How fast does the seafire go? at what hieght



Seafire_Japan
11-24-2004, 10:18 PM
hi

whats the best possible way of getting speed for the seafire, at best i am getting only 220mph with 75% prop pictch and around 90% throttle, setting to hieght of 600ft. The reason I keep the prop pitch at 75% on average is too keeep it in the the correct rpms which is between 25 -30. Of course the higher the rpms the hotter the engine is

WTE_Galway
11-24-2004, 10:55 PM
do not have PF

but am pretty sure in real life the sea fire top speeds are up around 340 mph plus at 5000 to 6000 feet (2000 metrers)

Seafire_Japan
11-25-2004, 07:26 AM
hi its mak8 version of the spitfire, so it supposed to do at least 380 mph easy. I cannot get this speed at all in the game.

The_Ant
11-25-2004, 07:39 AM
get it up around 5-6000 meters and you will have speed,are you using the boost? otherwise that increses the speed for some time.
And another thing the game speed is shown in IAS=indicated air speed which means what your speedometer shows,is not true theirs a IAS Graph on the cds which is in a pdf file,it will show you how the airspeed relevance too your intrument is shown.for exampel your speedo meter says 500 km/h but true airspeed is around 550-570 km/h

hotspace
11-25-2004, 09:17 AM
These might help ya:

http://www.fleetairarmarchive.net/aircraft/seafire.htm

http://www.deltaweb.co.uk/spitfire/

http://www.planes-and-tanks.com/HangarC/supermarine_seafire.htm

http://www.supermarine-spitfire.co.uk/perfdata.html

Hot Space

p1ngu666
11-25-2004, 10:37 AM
trim the plane so its flyin levelish, next part is easy
full bannanas.
max rpm and throttle, and wep http://forums.ubi.com/images/smilies/16x16_smiley-happy.gif

Seafire_Japan
11-25-2004, 11:34 AM
hi

I tried it i got to 17,000ft and the max speed i got was 230 at 100% pitch, with level trim. This was about 160 KIAS

The_Great_Stonk
11-25-2004, 02:01 PM
from my own personal data base (still under construction) the seafire L with 25% fuel and default armament will do 515 kph at sea level, the seafire F will do 472 kph at sea level in the same configuration.

tests done using full throttle, closed radiator 100% pitch and wep.

Seafire_Japan
11-25-2004, 03:12 PM
hi

hanng on so ur saying 250mph at 17,000 ft is not really 250 but 365 mph, erm NO

I do not accept that, why not, do u say, well for a starters, no point of using the speed ometer in the spit, because its is useless and whenn I use it to land on a carrier and it says 90 mph is not really doing that but more like 160 mph. Well I know if I lower my gears above say 150mph they usually rip off. Now i cannot truse the speedmeter i have to add an extra 100 mph to get the true speed, no wonder spits crashed on carriers, if this is this case. Also right why do i fall out the sky when go below 90mph but whereas you say i am doing 150 mph + does not make sense.

i have three speed read outs on my monitor, one says KIAS 210 which = 240 mph which =380 kph at full prop pitch

Now is this correct in the seafire? I say no , in the bfb109e i could of got 450 kph on 75 % prop pitch and 90% throttle at 2k m, the same with the mark 5b spit etc. remember the seafire is a modified mk 5 spits.

WTE_Galway
11-25-2004, 03:14 PM
you are using 25% fuel no-ammo flaps up gear up trimmed for straight and level ?

VW-IceFire
11-25-2004, 03:20 PM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Seafire_Japan:
hi

hanng on so ur saying 250mph at 17,000 ft is not really 250 but 365 mph, erm NO

I do not accept that, why not, do u say, well for a starters, no point of using the speed ometer in the spit, because its is useless and whenn I use it to land on a carrier and it says 90 mph is not really doing that but more like 160 mph. Well I know if I lower my gears above say 150mph they usually rip off. Now i cannot truse the speedmeter i have to add an extra 100 mph to get the true speed, no wonder spits crashed on carriers, if this is this case. Also right why do i fall out the sky when go below 90mph but whereas you say i am doing 150 mph + does not make sense.

i have three speed read outs on my monitor, one says KIAS 210 which = 240 mph which =380 kph at full prop pitch

Now is this correct in the seafire? I say no , in the bfb109e i could of got 450 kph on 75 % prop pitch and 90% throttle at 2k m, the same with the mark 5b spit etc. remember the seafire is a modified mk 5 spits. <HR></BLOCKQUOTE>
Actually yes he is correct. Speeds are measured in two ways:

IAS = Indicated airspeed
TAS = True airspeed

The speed bar (lower left corner) and the speed gauge in all planes except the Me-262 list speed in IAS. This is essentially how fast the air is going past the plane. TAS is how much ground you are covering. At sea level the two are essentially identical. At 10,000 feet there is a difference, by the time you get to 30,000 feet there is a massive difference. The air may be moving past you at only 150 mph but you are covering 400 mph in distance relative to the ground.

All aircraft maximum speeds are listed in TAS. Thus, you will never see a P-51, even in level speed, no matter what altitude, get to 427 mph. Only when you calculate out the speed relative to altitude will you figure it out.

By pressing (I think) Ctrl-F1 for the see through cockpit you can gain access to a TAS indicator.

BTW: The Seafire L.III is like a Mark V LF which means its engine has a cropped impeller and therefore achieves its best speeds below 10,000 feet. The F reaches best speeds around 20,000 feet.

Seafire_Japan
11-25-2004, 10:33 PM
hi

I did another experiement one in a spit ixe and the other with seafire 3 1943.

In spit 9e I flew at 50ft, with 50% full, full throttle, and full prop pitch 100%, the speeds I got on verage were 260 mph = which when in control f1 reached about 500 kph, neaerly double the speed. I thought indicated airspeed and true air speed was nearly the same. Note the doubling of speed never changes dispite the height of the aircraft, earlier on. I flew a seafire to 17,000 feet got to 250 mph with again reached 480 kph. Intresting eh.

Now going back to the test with the spit 9 and seafire 3. I flew the seafire, at 50 ft, full throttle and full prop pitch, reached speeds on average 230mph which indicated when in control f1 about 450 kph.

Again the speeds should be similar not way out. Well that is correct if true air speed and indicated air speed is similar at ground level.

So what gives

WTE_Dukayn
11-25-2004, 10:38 PM
what gives is your IAS is in MILES per hour and the TAS is in KILOMETRES per hour. That's one imperial, one metric.

WTE_Galway
11-25-2004, 10:39 PM
i am confused

are you commenting on the speed difference between the seafire III and the spit IX ??

or are you talking about the difference between TAS ans IAS ??

or both ??