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  #1  
Old 05-29-2012, 10:07 PM
K_Freddie K_Freddie is offline
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I think there's a lot of pilot error (lack of education) involved here.

a) I fly the anton 9s vs spitIX+25lbs (all '44) with reasonable difficulty and almost at full power = 50/50 outcome
b) Then again with the dora9 vs spitIX+25lbs (all '44) with little or no difficulty mostly at full power = 25/75 in my favour.

All scenarios < 1000m, never had and overheat... I mean not one ??
All Difficulty = Full Real
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  #2  
Old 05-29-2012, 10:43 PM
Z1024 Z1024 is offline
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Quote:
Originally Posted by K_Freddie View Post
I think there's a lot of pilot error (lack of education) involved here.

a) I fly the anton 9s vs spitIX+25lbs (all '44) with reasonable difficulty and almost at full power = 50/50 outcome
b) Then again with the dora9 vs spitIX+25lbs (all '44) with little or no difficulty mostly at full power = 25/75 in my favour.

All scenarios < 1000m, never had and overheat... I mean not one ??
All Difficulty = Full Real
Vanilla I2 upped to patch 4.11.* - the latest?
Full power + MW50? Like I said - I create a quick mission, fly straight MW50+max power with open radiator and get an overheat under 2min. Full real as well (well, at least engine wise). What am I possibly doing wrong here?
I'd love to see a track of you managing to maintain 110%+MW50 at sea level for more than say 5min and not get an overheat with some notes on how you achieve that?

Last edited by Z1024; 05-29-2012 at 10:48 PM.
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  #3  
Old 05-29-2012, 11:03 PM
MadBlaster MadBlaster is offline
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Quote:
Originally Posted by Z1024 View Post
Vanilla I2 upped to patch 4.11.* - the latest?
Full power + MW50? Like I said - I create a quick mission, fly straight MW50+max power with open radiator and get an overheat under 2min. Full real as well (well, at least engine wise). What am I possibly doing wrong here?
I'd love to see a track of you managing to maintain 110%+MW50 at sea level for more than say 5min and not get an overheat with some notes on how you achieve that?

To measure the time to overheat, you should really start from take-off when the "virtual" engine of the D-9 is cold with rad open, then see how long it takes. Not when the engine is already warm. Also keep in mind each map is modeled different temperature, effects of cooling from airspeed.

Think about it. 3250 is very high rpms even today for piston engine. This isn't even water cooled! High rpms creates more heat and that will break down the oil/lubricant chemical bonds and then the engine damage. Learn to use force of gravity in combination with your engine, this will get you your speed in any plane. Use the high rpms to get torque at your low speeds for acceleration, then lower the rpms and atas to keep it cool when your moving fast.
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  #4  
Old 05-30-2012, 10:30 AM
Z1024 Z1024 is offline
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Quote:
Originally Posted by MadBlaster View Post
To measure the time to overheat, you should really start from take-off when the "virtual" engine of the D-9 is cold with rad open, then see how long it takes. Not when the engine is already warm. Also keep in mind each map is modeled different temperature, effects of cooling from airspeed.
There is no ground take off in QMB. It always starts mid-air. Are you sure quick missions start with the warm engine?
Either way, in my tests(on the Crimea map, 100m alt) D9 MW50 overheats in 1:05m, La7 in 1:30 and Spit 25lbs in 1:55m. (all closed/auto radiator)

So 4.11 Dora is seriously crippled not only top speed wise, but also engine endurance wise as well.

Another interesting observation - the spit flew full 19 mins @110% before the engine died and it didn't show any signs of damage until maybe 12min into flight. D9 died in ~3:30 and La7 in 4:30. I understand that the time to failure is not fixed in this new patch, but still, these are the figures I got.

Quote:
Originally Posted by MadBlaster View Post
Think about it. 3250 is very high rpms even today for piston engine. This isn't even water cooled! High rpms creates more heat and that will break down the oil/lubricant chemical bonds and then the engine damage.
Sorry but Jumo213A IS liquid cooled and it was rated for 30 min at that rpm.
Now that might look high, but Junkers engineers allowed that, so they probably knew their engine better and knew what they were doing.

Quote:
Originally Posted by MadBlaster View Post
Learn to use force of gravity in combination with your engine, this will get you your speed in any plane. Use the high rpms to get torque at your low speeds for acceleration, then lower the rpms and atas to keep it cool when your moving fast.
I just leave pitch at auto and control in with the throttle.
My problem is not that it overheats, but that water cooled Dora overheats faster than air cooled La7 and much faster than water cooled Spitfire 25lbs.
This is not correct, besides, MW50 should actually cool the engine, and increase its efficiency.
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  #5  
Old 05-30-2012, 10:41 AM
csThor csThor is offline
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*Cough* Select "Scramble" in QMB and you get your take-off.
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  #6  
Old 05-30-2012, 10:50 AM
Z1024 Z1024 is offline
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Quote:
Originally Posted by csThor View Post
*Cough* Select "Scramble" in QMB and you get your take-off.
Where is that? I can't see anything called "Scramble" in the QMB
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  #7  
Old 05-30-2012, 11:04 AM
csThor csThor is offline
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There must be a dropdown menu to choose the type of mission. That list includes a scramble type mission.
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  #8  
Old 05-30-2012, 01:46 PM
MadBlaster MadBlaster is offline
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Quote:
Originally Posted by Z1024 View Post
There is no ground take off in QMB. It always starts mid-air. Are you sure quick missions start with the warm engine?
Either way, in my tests(on the Crimea map, 100m alt) D9 MW50 overheats in 1:05m, La7 in 1:30 and Spit 25lbs in 1:55m. (all closed/auto radiator)

So 4.11 Dora is seriously crippled not only top speed wise, but also engine endurance wise as well.

Another interesting observation - the spit flew full 19 mins @110% before the engine died and it didn't show any signs of damage until maybe 12min into flight. D9 died in ~3:30 and La7 in 4:30. I understand that the time to failure is not fixed in this new patch, but still, these are the figures I got.


Sorry but Jumo213A IS liquid cooled and it was rated for 30 min at that rpm.
Now that might look high, but Junkers engineers allowed that, so they probably knew their engine better and knew what they were doing.


I just leave pitch at auto and control in with the throttle.
My problem is not that it overheats, but that water cooled Dora overheats faster than air cooled La7 and much faster than water cooled Spitfire 25lbs.
This is not correct, besides, MW50 should actually cool the engine, and increase its efficiency.

- you can always use full mission builder to make your own mission and take off from the ground.

- okay, so it's water cooled. whatever. 30 minutes, whatever. it's virtual. there is no water, there is no air, there is no plane. it is all pretend.

- iirc, the 213 is modified/beefed up 211. the 211 had much lower rpm power band. the point is 3250 is a high rpm for piston engine, creates a lot of heat no matter water cooled or not, and you can't expect to cruise around in your plane like that. that's not what the high rpm part of the power band is for.

- even if there is a cooling effect from mw50 and the engine is water cooled, it is not enough to overcome the additional heat caused by running the engine at 3250 rpms! eventually, there is no more heat exchange with the oil, radiator water and outside air. The engine just keeps getting hotter and bad things start to happen to the engine.

-i forgot to mention, to engage the mw50, your supposed to reduce your throttle first or you get engine damage. unless they changed that in 4.11. but I fly up3 rc4 based on 4.10.
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  #9  
Old 05-30-2012, 02:44 PM
JtD JtD is offline
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Il-2 compare date is not corrected to standard conditions, full throttle altitudes are lower than they are in real life data corrected to standard conditions. This effects speeds.

I have no intention of discussing the La-7 in a Fw 190 flight model topic.

Time limits and temperature limits are separate limits, they are about as related as dive and load limits.

You should install 4.11.1.
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  #10  
Old 05-30-2012, 05:16 PM
Z1024 Z1024 is offline
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Quote:
Originally Posted by JtD View Post
Il-2 compare date is not corrected to standard conditions, full throttle altitudes are lower than they are in real life data corrected to standard conditions. This effects speeds.
What are the standard conditions then and what is the value of IL2Compare if they are not indicative of the il2 plane specs?

I can't achieve even the il2 compare speeds in a FW - usually 25-30kmh slower. In a La-7 the it is only 5kmh slower.

Quote:
Originally Posted by JtD View Post
I have no intention of discussing the La-7 in a Fw 190 flight model topic.
Fine, I might create a new topic.

I am using 4.11.1m
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