grafspee

@stuart666 This beeping sound so to warn pilot to lower landing gear and sound is activated if throttle is retarded far enough. As @Art-J siad, engines in mosquito are supercharged at high rpm supercharger output is very big and to get +7 boost you need little throttle opening and this triggers beeping sound, by reducing rpm to 2000 rpm supercharger output lowers significantly so to achieve +7 boost you need to open throttle almost all the way and this no longer triggers beeping sound. About sparkplug fouling, thing is modeled but it would require very long low power cruise to get in to it. The fastest way to foul spark plugs is idling engine for long time on the ground, this is why pretty much every manual advice to do magnetos checks before take off after long time spend on the taxi way, this could happen when large amounts of planes were taking off for mission at the same time. If you do 30 min cruise at 2000 rpm you don't need to worry about that, as manuals claims for precaution you should increase power every 30min of low power cruise, but to get in to severe sparkplug foul you would need to hold that low power for much much longer, trick is that if you do allow to happen and if one of cylinder stops firing there is no option to fix it in flight.

It appears to be the case, but why only K-4 other ww2 planes were equipped with ground adjustable tabs as well but we have no option to change those in game. So this aileron trim offset in K-4 has some historical background or this offset is random figure only just because we can change those trim tabs in special tab options?

Exactly. I went through all settings, like FFB etc turned them off, i set dead zones at 0. No double binds what so ever no other controllers connected only rudder pedals, joystick and throttle. This right stick deflection only depends on speed, it start to deflect at around 50kph and stops at 120-150 ish kph and stays that way in flight no matter you power setting or speed even if it is 700kph. Only way to made stick centered is to set aileron trim to -27 in special tab but why this is happening, i have no idea and this bothers me if i don't understand what is going on here Same as @razo+r everything off.

Axis binding checked couple times only single bind.

Engine torque or P-factor affect how plane flies but it can't deflect aileron. Rudder is used to cancel out most of unwanted effect of engine and prop but pilot is doing that via muscles or trim system. Prop planes slide slip or other effects, not because engine or prop deflect ailerons or elevator or rudder but because it has uneven thrust and you correct it with rudder to cancel out slip or other effects via control surfaces, trim system or build in angle of incidence of horizontal and vertical stabilizer. Beside prop wash can't affect ailerons, they are just too far from prop wash. In my case i have good rudder pedals and i can with ease keep ball centered but constantly keeping stick little deflection to the left is exhausting.

Thing is that aileron trim is not affected by speed or power at all. If i set aileron trim to 0 as default it will roll right all the time and deflection of aileron won't change at flying speed 200kph or 600kph same exact deflection, when i set -27 aileron trim it makes stick centered across all speeds, this is why i am curious about it. This is super weird for me because i would assume that if i set certain aileron trim it should change it's effects depends on speed. Anyway my solution is to set -27 aileron trim in special tabs then K-4 flies level when ball on slip indicator is centered. But still it bothers me because i don't know why this is happening, this right stick deflection appears even if you taxi K-4 with high speed, if you taxing with 50kph you start seeing stick deflect to the right super weird at so low speed.

DCS mention only something on not even forces acting on stick due to lack of elevator trim tab ? Is it what you had on mind. I can't find anything else.

I think that overheat is just aftermath of failure. Engine dies and then temps sky rocket happens.

Problem is in flight i have to constantly deflect stick to left or with rudder set slip worth whole ball in order to fly level. This problem is with me since i bought this module and only solution for this is to set up something like -27 aileron trim in special tab. I can't think a single reason why ailerons deflects it self as soon as 100khp is reached. right roll.trk

Can someone explain to me why as soon DCS K-4 get speed higher then 100kph stick deflect it self to the right making right aileron roll ? I just can't grasp it why this is happening, in special tab aileron trim is set to 0. I would be very happy if anyone help me understand this. No other DCS warbird has this characteristic.

@percivaldanvers If you have mw50 off you can reach 3250rpm with full throttle, deference is only in MP, w/o mw50 it is about 1.6 ata and with mw50 it is about 1.9-2.1 ata. w/o mw50 you can use 3250 rpm as long as 30min, if you engage mw50 this limit reduce to 3mins. Simple as that.

This imho should close discussion. Last time i checked in DCS even if i was holding 50inch and rpm went up to 2900 engine died. DCS P-47 is far away in that regard from RL.

Actually alison powered p51 was performing better low to medium alt then merlin powered p51s, at high alt is where merlin shines.

It wasn't overlooked, they just copy paste code from P-51 module they just saved a lot of time by doing this. If it comes to real planes you can start up both p51 and spitfire both ways. Difference is in fuel pump on or off, if you start with fuel pump on you have to start with mixture lever in cut off position if not you will pour fuel on the ground. If you start with fuel pump off you can set mixture lever in run position prior, but ofc before you have to prime fuel lines with fuel pump before start up just like in spitfire.

Many engine abuses which effects should be noticed after 10 or more hours of engine life, DCS shows those effects sometime after couple minutes or even couple seconds. I am not telling that engine should be immune to whatever how you treat it, but if you follow plane's manual, engine should last many many hours. So for example over revving engine for 10s should not lead to immediate engine failure. Using WEP should not doom engine to death. Am i asking too much ? If anyone putting this issue to question, asking too much ?

This is big issue for all ww2 modules in DCS, they are modeled that way that pretty much engine will die after longer use like flying single airplane and going through couple tanks. Engine models are way too sensitive, at first release P-47 main bearing modeling was nightmare, even now after couple fixes you can't go above 2800rpm because it kills engine instantly, despite fact that every P-47 manual states that engine can handle 3060rpm for brief time. Famous P-51 WEP engine killer, i am so traumatized by this that i don't use WEP in P-51 anymore. Low carb temp is good, only concern is too high carb temp. Chances are that you are managing engine perfectly are high but it is just DCS which loves to kill engine w/o reason. Limits on WEP are only limits how long you can use it in single use not total flying hours. If you are doing WEP for max allowable time you need to drop power to continuous and cool engine down. My only advice is to keep oil cooler wide open in P-47.

It also depends which engine you lose, if it is left engine airplane is harder to control at low speed then if you would lose right one.

If any ED team dude don't come here and acknowledge this issue as bug and send report to the ED team, fix won't come ever at all. Unless this issue is already acknowledged, then this topic should get "already reported" status. I may be wrong but as far as i know there are 2 or 3 guys which sweep forum bug section trying to recreate bugs and file full bug raport to the team but there are lots of planes and other modules probably endless list of reported bug so it may take even month or so to complete sweep and get back to ww2 bug section.

Robustness of the radial engine comes not from resilience of pistons or connection rods or crank shaft to damage, both V and radial will suffer and self destroy when vital parts get hit. V-12 are liquid cooled engines which means that they have one big water jacked in engine block and headers, once this jacked is perforated fate of the engine is sealed. If V-12 were air cooled they would have upper hand over radials due to significantly lower frontal area. Lower frontal aera means less chance your engine being hit. So difference is in cooling, air cooling does not care about battle damage and liquid cooling even smallest possible damage can doom engine to death because there is no way to seal liquid cooling system in flight, even single small caliber rifle bullet can seal engine doom.

Issue reported many many times over. I don't know what status this issue has but my bet is on "can not reproduce" state.

If you have switches mapped to your hotas it may be a case that you turn off fuel or pulling cut outs by mistake especially if you have this checked ON

That would be incorrect order because engine has to shut down due to fuel starvation not by lack of ignition. So by shutting down fuel by fuel selectors is way closer then shutting engine via cutting off magnetos. I wish that ED would implement punishment for shutting down engines via magnetos by immediate fire of engine compartment, because when you cut magnetos and fuel is still introduced to inlet, hot fuel air mixture will come out of exhaust causing serious fire risk and on top of that those pressure carbs induce fuel even when engine is not rotating, so when engine stops fuel will pour out of engine inlet on the ground making small fuel puddle in quite short time. I just tested it and even when i cut off fuel via fuel tank selectors engines still get tis splutter at the lower rpm. Just same story perfect rpm run down to about 200rpm and then engines wakes up splatter loop with rpm spikes. So at that moment switching magnetos off is probably only way to avoid this splatter loop.

This is so ridiculous. It makes me sick by watching this. I advice to cut fuel via tank selectors next to cut outs. This way you should avoid this engine splutter but engine will still keep running quite long before cuts out. Running engines up to 1500rpm will speed things up.

This is exactly my point, if any splutter or backfiring happen it will happen while engine still has high rpm. Like on this recording, not at moment when engine is about to stop rotating.

This is why always say that, engine should not cut out at moment when you move mixture to cut off, engine should run for some time, and after noticeable delay engine should cut out and if any spontaneous fuel induction happen there is a time engine to splutter when rpm is quite high so that spark from magnetos is strong. In DCS we have instant reaction on cut off lever and perfect engine rpm run down to 100rpm and then magic happen. I wonder why in those planes you have something like boosters coil when engine without priming and coil boosting combust fuel without problem