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FM/DM threads Everything about FM/DM in CoD

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  #1  
Old 05-13-2012, 05:59 AM
theOden theOden is offline
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Quote:
Originally Posted by Seadog View Post
Spit I and Me 109 performance:
..
It's a graph from internet so it must be the truth.
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  #2  
Old 05-13-2012, 06:07 AM
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JG5_emil JG5_emil is offline
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Quote:
Originally Posted by theOden View Post
It's a graph from internet so it must be the truth.
Indeed ha ha!
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Old 05-13-2012, 07:14 AM
41Sqn_Banks 41Sqn_Banks is offline
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Quote:
Originally Posted by theOden View Post
It's a graph from internet so it must be the truth.
The source for each line is given and all of them are available in the internet. So it shouldn't be a problem for you to check the values and report any anomalies.
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Old 05-13-2012, 07:58 AM
Flanker35M Flanker35M is offline
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S!

But I see the problem right there. Now people look at that graph and see thick blue line faster than Bf109E. But forget to check a "minor" thing..it is with 12lbs boost not the lower continuous power. And on that the Spitfire is slower than Bf109E. And it seems, according to that graph, that Spitfire and Bf109E were quite evenly matched regarding speed on power settings below WEP or overboost. But again can not stress enough that should not take the 12lbs curve as the absolute speed of Spitfire as it could not run that setting indefinitely but for a limited time like Bf109E it's WEP.
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Old 05-13-2012, 08:05 AM
von Brühl von Brühl is offline
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If those are taken from spitfireperformance.org, weren't those papers proven to be photoshopped a while ago?
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  #6  
Old 05-13-2012, 08:17 AM
41Sqn_Banks 41Sqn_Banks is offline
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Quote:
Originally Posted by von Brühl View Post
If those are taken from spitfireperformance.org, weren't those papers proven to be photoshopped a while ago?
If it was proven, you certainly can present the proof for this claim.
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Old 05-13-2012, 09:01 AM
Insuber Insuber is offline
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We are focusing on the Spit II which IMO is fine online, except maybe for the climb rate and the 12 lbs takeoff boost. The other Spit types and the Hurricane have been excessively penalized according to people who flies them, I believe that the devs must have a second look at their FM's for the red pilots peace of mind. Speed/alt curves must be consistent.
In the long term all the FM engine must be revised to fix the bigger inconsistencies - G-stall lack, dive speeds, G damage, accelerations, ceiling >7000 etc.

Cheers!
  #8  
Old 05-13-2012, 09:30 AM
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robtek robtek is offline
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Regarding to the topic,
yesterday i flew the spit 2 on the ATAG server and it was absolutely no problem for me to follow a few 109's across the channel and to get into firing range (150 yds) as soon as they left the straight flight path.

My IAS was 280 to 290 mph with +8 lbs boost at 2650 rpm at a altitude around 1000 ft.

It was also no problem in the dogfight to turn behind a 109 coming from above, attacking another plane, follow in a shallow dive and to intercept and follow it on its way back up and getting a firing solution on the apogee.

My summary is, that even with the less then perfect FM's the spitfire 2 is a matching adversary for the BF109E4 (which the majority of the enemy was flying)
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Old 05-13-2012, 09:09 AM
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Kwiatek Kwiatek is offline
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Quote:
Originally Posted by Flanker35M View Post
S!

But I see the problem right there. Now people look at that graph and see thick blue line faster than Bf109E. But forget to check a "minor" thing..it is with 12lbs boost not the lower continuous power. And on that the Spitfire is slower than Bf109E. And it seems, according to that graph, that Spitfire and Bf109E were quite evenly matched regarding speed on power settings below WEP or overboost. But again can not stress enough that should not take the 12lbs curve as the absolute speed of Spitfire as it could not run that setting indefinitely but for a limited time like Bf109E it's WEP.
Flanker you should notice that speed curves for 109 are for 5-minutes emergency power not for nominal power. So it should be checked speed at 1.23 Ata for 109 (30-minut power) vs 6 1/2 lbs for Spitfire - both continous power.

We should note that power settings for 109 E was ( Db 601A/Db601Aa):

1.4/1.45 Ata - 1 minut take off emergency power
1.3/1.35 Ata - 5 minut emergency power
1.23/1.27 Ata - 30 minut continous power

For Spitfire we have:
12lbs - 5 minutes emergency power
6 1/2 lbs - 30 minutes continous power

The problem is beside that Spitfire MK II dont have emergency +12 lbs at low level that its engine is very ofen broken without seriously reason. Yestarday i flew SPit MK II at 6 1/2 lbs and reduced RPMs for 2800 RPMs radiator open (temps normal) and after some time flying ( ab. 10-15 min) my engine broken. Flying at + 9 lbs broke engine much more faster.

Other hand if i not execed 2400 RPMs in 109 i could fly at 1.35 Ata power all time without any problems - when it should be only 5 minut emergency power.

Last edited by Kwiatek; 05-13-2012 at 09:20 AM.
  #10  
Old 05-13-2012, 10:04 AM
Kurfürst Kurfürst is offline
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Quote:
Originally Posted by Kwiatek View Post
Other hand if i not execed 2400 RPMs in 109 i could fly at 1.35 Ata power all time without any problems
What sort of problems would you expect to happen?
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Il-2Bugtracker: Feature #200: Missing 100 octane subtypes of Bf 109E and Bf 110C http://www.il2bugtracker.com/issues/200
Il-2Bugtracker: Bug #415: Spitfire Mk I, Ia, and Mk II: Stability and Control http://www.il2bugtracker.com/issues/415

Kurfürst - Your resource site on Bf 109 performance! http://kurfurst.org
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