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View Full Version : Overheated Engines on Bf109s in FB - How to avoid?



bf109ace
07-27-2004, 11:39 AM
Hi, I used to fly Bf109s in the original IL-2 with no problem. But the FB is a different story.

No matter which Bf109 model I chose, I always got an overheated engine after 30s to 1 minute. What went wrong? I tried to open up the radiator (position 2, 4, 6, 8, close/auto, etc) but it didn't help a lot.

I saw people flying Bf109s in FB online rooms with no problem. Is it just me? Would someone show me how to "manage" the throttle/radiator openings on a Bf109? Which Bf109 model do you recommend? Step-by-step explanations please (i.e. engine/throttle management for take-off, climbing, dogfight, etc).

Thanks.

bf109ace
07-27-2004, 11:39 AM
Hi, I used to fly Bf109s in the original IL-2 with no problem. But the FB is a different story.

No matter which Bf109 model I chose, I always got an overheated engine after 30s to 1 minute. What went wrong? I tried to open up the radiator (position 2, 4, 6, 8, close/auto, etc) but it didn't help a lot.

I saw people flying Bf109s in FB online rooms with no problem. Is it just me? Would someone show me how to "manage" the throttle/radiator openings on a Bf109? Which Bf109 model do you recommend? Step-by-step explanations please (i.e. engine/throttle management for take-off, climbing, dogfight, etc).

Thanks.

PBNA-Boosher
07-27-2004, 11:47 AM
When climbing, use 100 percent power, however, if you're just flying, most people don't realize that the plane can run fine at just 45% power, as long as you trim it. When taking off, keep the radiators all the way open. keep them on auto for mostly everything, except landing. Another tool that definitely helps is manual prop pitch. That can be a biggie, and I haven't even learned it yet. In combat, you don't need 100% power all the time. Keep varying your throttle settings. I find that most of the time I only need about 80% in my Yak fighters. Remember that combat speed is not the same as top speed.

Hope that helps.

Boosher
_____________________________
"So do all who live to see such times, but that is not for them to decide. All you have to decide is what to do with the time that is given to you..."
-Gandalf

Nero111
07-27-2004, 01:02 PM
Read this post as well
http://forums.ubi.com/eve/forums?a=tpc&s=400102&f=23110283&m=125104853&r=631102063#631102063
I got a few pics there of manifold pressure and revs etc, all relevent to temperature build up http://ubbxforums.ubi.com/images/smiley/16x16_smiley-happy.gif

http://qwrety.cc/nero.jpg

x__CRASH__x
07-27-2004, 02:44 PM
Manual Prop pitch. Keep RPM's between 2400 and 2800. 3000 and above will overheat and eventually fry your bearings.

Ghost Skies. The Premier IL2FB Dogfight League. (http://www.ghostskies.com)
http://www.rmutt.netfirms.com/crash2.gif (http://www.ghostskies.com/)
CWoS FB/PF forum. More Cheese, Less Whine. (http://www.acompletewasteofspace.com/forum)

bf109ace
07-27-2004, 03:06 PM
Thanks for your info. so far. Could somebody show me how to use the manual pitch? Can the manual pictch be set up on the stick or throttle control unit or it has to be done using keyboard?

Thanks.

F19_Ob
07-27-2004, 03:54 PM
PROP-PITCH
Manual proppitch was mostly used on takeoff and landing as a recommendation, and in normal flight and combat only in the early variants up to bf109e.
With the F variant and up pilots had and used autopitch in flight and combat( havent found anything else, yet), wich lightened the workload and spared the engine for a few flights more.
U can read a 109 pilots own words about it in this interview with Franz Stigler:
http://109lair.hobbyvista.com/articles/pilots/stigler/stigler.htm

While testing manual proppitch U will soon discover why they used autosettings when they got it. (U fryed the engine fast if not careful). The autosettings also enables the pilot to concentrate fully on combat and not the survival of the engine.
I should add. That earlier 109flyers used manual proppith ofcourse. There is also some gain in performance when using manual proppitch= u can get the prop to bite more of the air, wich was good on high altitudes also, and some on these boards claim they can get a bit better climb. In the Real pilots notes they anyway recommend switching to autopitch in dives. If U try manual pitch I advice to try it in BnZ only, bcause the pitch has to be changed quickly and that only works if u have it assigned to a wheel or such( says others)(I dont have that). So in close turning vertical fights I was unable to change pitch fast enough, partly because I flex heavily between lowest and fastest speed in my fights. ( a few secs of overrevving the engine will fault it , if not immediatly, then soon). I let manual pitch go since the gain in my style of combat seemed marginal (what I can see) and concentrate on tactics instead...
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It would be interesting though to see a track where its used in a favorable way...probably in a climb after a BnZ attack ?. Anyone done a climb test?

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RADIATOR
In real life the the radiator was opened fully while taxiing and takeoff since the engine easily overheated (according to Finnish ace Ilmari Juutilainen), and then on auto for the rest of the flight and opened fully when needed.


In FB u can have it on auto for the most of the time, even combat.
A few suggestions to stay cool is:

1 Climb to altitude above your airfield ,2000m on full throttle to start with, and continue to climb on your way to the fight on 80-90% power to 3-4000 if the battlefield is a few mins away, other than that U can go efficently on 70% power in level flight but when u suspect trouble go full power.
WEP (or war emergency power) shouldnt be used for more than a few mins at the time and I can sometimes avoid to use it at all.

2 Often its possible to keep the engine cool by throttling down in descents or dives (it picks up speed fast anyway) wich I also do frequently in battle. If U for some reason have flown on full power a long time and cant avoid overheating or overheat constanly ( on the defensive probably) ,U firstly open radiator fully and then cool down by a dive and throttle idle.
If U have enemies close by U can try to find clouds and throttle down in cover of them until cool.

Remember that the clouds work almost the same as in RL and that u might be visible although u only see white. If u have enemies below, go up higher in the clowd and the other way if they are above.



A few thoughts and what I know so far http://ubbxforums.ubi.com/images/smiley/16x16_smiley-wink.gif

[This message was edited by F19_Ob on Wed July 28 2004 at 02:46 AM.]