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Forums 1C:Maddox Games IL2 Maddox General Discussion ok, help me learn Complex Engine Management|
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One thing you should know is that the F6F and F4U can get a major performance boost if you shift to the 'low' supercharger setting (supercharger 2) at ~400meters with the throttle firewalled. Otherwise the water/meth doesn't result in an increase in manifold pressure.
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GM-1 needs to be engaged over 6000m or your engine will detonate.
MW50 requires that you engage it below 70% throttle and then you can throttle back up. ---------------- Flying online as nate85 "I can buy a scalpel, that doesn't make me a surgeon." - M_Gunz |
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So, um, for best speed do you leave the radiator full open so you don't overheat the engine, or half open, or closed, or what? Do you really notice a big speed decrease from the drag? Is there a gauge that you're supposed to be monitoring for radiator control? Also on the Spit I noticed that beyond the red zone on the tach and manifold pressure gauges there is a neutral zone like there is before the red zone, what is the deal with that? Is it okay to go beyond the red zone as long as you're not IN it?
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Cool, I'm going to have to give that a shot. 
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On most common fighters maximum speed difference between radiators open and closed is about 20 to 30 kph. I've read a couple of times that some planes also change their FM, handling worse with rads open. I've never experienced it, but then it would take quite some testing to prove it. No one in sane mind ever turns when he has any other option. ~ DKoor |
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In the Tempest, I don't use 100% PP unless doing a combat climb, take off, or landing. I also don't thottle up over 100% unless it's really needed, like in a combat climb. Lately, I've barely been using the Boost. I usually cruise at around 270 knots with the throttle and PP around 70-80%. I find that boost doesn't kill your engine unless you overrev or overheat for a long time. You can overrev the Tempest if you go 110%+Boost and 100% PP and dive. That's the thing about CEM, each plane is a little different, what works for one may not work for another. |
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But I thought you can't really use the top speed with the radiator closed because it will overheat from the full throttle settings? There are like 8 radiator settings and I never know which one to use, somebody help me out here. |
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from what I have read by people who have claimed
to have tested it with device link, it is always faster to run at reduced throttle with rads closed. However, take a look at the online racing community and they will tell you that it is faster to close the rads, over heat the engine for that planes over heat time (~4mins in most planes, but up to 10mins in some i.e.P47) and then cool the engine on reduced throttle and open rads as quickly as possible before over heating again. |
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So is there a gauge or something that tells you how much you are overheating (and how much will bust the engine)? I would like to know when to use the radiator increments instead of just full open or full closed. Also what about the red zone on the Spit's manifold pressure and tach gauges, why does it not extend to the full part of the gauge? Does that mean it's okay to go beyond the redzone as long as you're not in it or what?
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Overheating isn't well modeled in IL2.
After the overheat warning appeaser you have a certain amount of time to cool the engine before it becomes damaged. It doesn't matter if you heat it up to 1000 degrees as long as it cools down in time. The instant it cools down you can heat it up again. The length of time the engine can stand being over heated for varies from plane to plane. I used to have a table giving the overheat times for all the planes (any one got a copy still?). If yo have noting better to do, you can time your overheat periods and you will get ever so slightly more speed at the cost of an immersive gaming experience. Most planes do have a temperature gauge, but engine temperature just isn't modeled well enough for it to be much use. perhaps the devs where worried that highly complex engine management wold scare off casual players or get in the way of the overall game experience. Perhaps they just gave it low priority and didn't have time. To answer your question directly; radiator increments are not useful. Even slightly open rads create more drag than the extra throttle can make up for. Leave your rads open when you don't need to go fast. Close them when you do. Open them when you need to cool down. |
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Well, if you really need those 20kph (they may save you), then the answer is obvious. Close rads and run. You have 5 minutes of overheat in most planes anyway. 10 in some.
Like Letum said, once Overheat message pops up, a stopwatch starts. You need to get the message dissapear before time runs out (about 5 minutes for most planes, and about 10 for P-47, F6F, F4U etc, basically all R-2800 equipped planes). You only need the message to dissapear for a split second, so that you reset the counter, and you have new 5 minutes. No one in sane mind ever turns when he has any other option. ~ DKoor |
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Well guess I won't fly around with my radiator fully open all the time anymore. So how about mixture adjustment? The EGT gauge isn't nearly as sensitive as in MFS. Is it only necessary above like 3000m?
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I would recommend you fly around with rads open all the time, and then just close them when you need the extra speed or if you get into combat. It makes sense: Keep your engine as cool as possible, so that you can torch it when you really need it. If it comes down to overheating your engine or letting the guy behind you catch up and shoot you, the choice is obvious. ---------- As far as mixture: There is no magic altitude where you need to adjust. Some aircraft you have to go down a notch at 3300, others will be good until 4500 or so. Basically, leave it at 100% mix until you climb high enough that you notice twin trails of brown smoke coming out of the engine(s). You will also notice the RPMs start to drop as the engine gets "bogged down" When this happens, go down a notch on your mixture controls, and you will be able to climb higher. Be sure to put the mixture back up when you get below that altitude again on your way back down, otherwise you won't get maximum power. ---------------- Flying online as nate85 "I can buy a scalpel, that doesn't make me a surgeon." - M_Gunz |
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Hmmm well I was just in a mission in the La-7 and my engine died all of a sudden.
I had supercharger at 1, fuel mix at default 100, about 1000m up, and engaged enemies by closing the radiator and putting throttle to 110%. I shot down a couple, then suddenly I get this noise like I was hit by gunfire and my engine cut out and I get the "engine inoperable" message. No overheating message prior to that at all. I was recording the mission and played the mission back and I am pretty sure I wasn't hit by an enemy bullet. Do engines just blow out sometimes with CEM? ----------------- Farewell to freedom in the Adriatic and to the days of wild abandon. Check out my BRAND NEW campaign, "The Pirate Menace" Also check out my old Air Pirates campaigns! Air Pirates Part One Air Pirates Part Two |
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Never in my experience. Only time my engine has detonated is when I ran GM-1 at sea level. Were you hit by AAA? ---------------- Flying online as nate85 "I can buy a scalpel, that doesn't make me a surgeon." - M_Gunz |
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There are only 4 ways you can damage an engine
in IL2: Gunfire/flak/crashing etc. Overheat beyond the over heat time Over revving Incorrect GM-1/MW50 use If you are 10% sure you can rule out 1,2 and 4 you must have over revved. next time be sure to reduce your prop pitch before you enter a very fast and prolonged dive. |
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No, I was far away from any AA. Maybe I overrevved it, but I wasn't going into a steep dive, sort of a shallow dive if I remember. What should I reduce PP to when pointing the nose down with throttle at max?
Weird. ----------------- Farewell to freedom in the Adriatic and to the days of wild abandon. Check out my BRAND NEW campaign, "The Pirate Menace" Also check out my old Air Pirates campaigns! Air Pirates Part One Air Pirates Part Two |
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There's no hard fast rule. It depends on how fast you're going. If in doubt, when you spawn on the runway, put prop pitch to 100 and firewall the throttle. Note the RPM that the engine settles on (in the La, probably near 2700). If you're in a dive and your RPMs exceed that number, you should decrease prop pitch and/or throttle back. ---------------- Flying online as nate85 "I can buy a scalpel, that doesn't make me a surgeon." - M_Gunz |
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Ok, I'll check with the La-7 and then watch that .ntrk again and see if the RPM gauge shows anything.
----------------- Farewell to freedom in the Adriatic and to the days of wild abandon. Check out my BRAND NEW campaign, "The Pirate Menace" Also check out my old Air Pirates campaigns! Air Pirates Part One Air Pirates Part Two |
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On the CSP (constant speed propeller) equipped planes you shouldn't overrev no matter how fast you go. The job of CSP is to constantly adjust the pitch of the propeller blades so that your engine stays at constant RPM. You can overrev planes without CSP in a dive (like Gladiator, P.11 and similar), or the ones where you can disengage CSP.
No one in sane mind ever turns when he has any other option. ~ DKoor |
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Forums 1C:Maddox Games IL2 Maddox General Discussion ok, help me learn Complex Engine Management