Blue flame is practically invisible in daylight.
I've seen pics of formula 1 racing where after a crash, the driver is trying to get away from flames engulphing him - the video does not pick up the blue flames.

I've also seen exhausts burning blue but at the last part of the flame they start to flicker yellow.

Interesting topic. In my mind I'm beginning to rationalize briefly yellow turning to blue as the system heats up but that is purely a guess by me and I'm sure Oleg will have the definitive answer after seeing all the info being brought forward.

Yet another video - watch for the colours at approx 30 seconds:

http://www.youtube.com/watch?v=g2gef...eature=related

Best vid I could find of MH434 a mkIX spitfire with type 66 Merlin engine. From 5.35 to 6.25:
http://www.youtube.com/watch?v=UDZmq2VrcNQ

Any kind of visible flame on startup is very unusual unless this is due to overpriming of the engine. A spitfire in good condition will start with less than one turn of the prop. They can throw out quite a bit of smoke though for a couple of seconds. See here, a mk1a:
http://www.youtube.com/watch?v=tv4SG...eature=related

yep
indeed.

thanks for the update oleg

Maby this should indecate to people that Oleg and team are ontop of things:

"We have original table of the exhaust colors by which British crew were need to define is in good or not so good conditions the engine before the flight..."


Meaning maby Oleg and team have more than one colour to play arround with depending on situation.


So maby we could go back to the orginal question:

"My question to community: isn't it too yellow? Maybe to add a bit red color in a mix with yellow? It is tunable really, so I would like to listen suggestions"




Amazing how difficoult focusing on the issue at hand can be for some.

Wow, got a signature!

Engine Flame & Smoke effects demonstration
 

Sorry Oleg, had a spare hour this afternoon and a new add-on for an old sim, and just couldn't resist...

http://www.youtube.com/watch?v=1tzHTH2Jzhg&hd=1

sorry for my bad very very bad english

in all benzine engine the exaust flames is blue, benzene vapor create those color, but see yellow/orange flames is caused to "return of flame" (in italiano si dice ritorno di fiamma in inglese non ne ho idea!) this "return of flame" is determined from a not complete combustion of the mixture in the cylinder

I must say it is nice to see that the hangars are weathered and old looking.

A question about the presentation video 2 weeks ago - will we see English train stations? The one shown with British vehicles passing nearby is Foo'bar's German station (and can be seen on his site).

Yes, I know it does in the real world. I was just wondering if this will be modelled in SoW. :)

Yes. Oleg has said it will.

(I'm sure this was what David603 meant too)

Already shown in pics and videos. Red tape goes when guns fire.

Same for me, I had vaguely feelings of a dog when the master throws it a bone ...

Anyway from books the flames should b bluish, and the hot exhausts glowing red.

I work on an airfield and this is what i have seen with the oldies (there are 2 spitties, im not sure if they have kept the original engine or not, sorry)

When the engine is started sometimes the flame is yellow and sometimes it goes straight to blue. When the engine is running at low revs the flame is almost invisible and purple, but as throttle increases it goes blue and quite a bit brighter.

Sorry I can't be of more help, this is just what i have seen.

Does that haves something with complete and incomplete burning?
Lack of O²,etc?

Looks more like a hundred dogs.Sometimes they start to fight...

Anyway,awesome update!The level of details of SoW is beyond any flight simulator.Nearly experimental.
Sometimes I wonder how a machine will be able to handle the complete game.

Nice update!

I´m so sorry, but engine sound is really awfull :(
pls pls pls can we have a authentic one.

Please read Mr Maddox's first post. He says it is a 'placeholder'.
The sound is La7 from IL2. I'd know it in my sleep.;)

Lanc at night

Here is another.. apparently of the same Lanc.. from someone else... but notice around 1:90 or so.. the whiteish blue light from the inboard starboard engine..

Yes, it is shown in one of the films from the Russian game show.

Before and after:

http://i4.photobucket.com/albums/y12...ck/pres02b.jpg

http://i4.photobucket.com/albums/y12...ck/pres03b.jpg

Haaaahahaha i believe thats coming straight out of the block with no exhaust stubs?

I recall i did that after transplanting a 2 litre Ford engine in my little Mk2 Escort.

Drove it around for a bit with no bonnet/hood and no engine pipe.

Sounded like a demon on a short chain, although when i got back i realized i'd burnt pretty much everything off that side of the engine bay. ;)

Aah good times.

Thanx for the update but somehow I feel like a cheap date thats been handed half a beer. Love what you gave us though. Realistic or not I like the BLUE.

It's lucky we've got so many experts on this forum especially in the field of chemisty. I on the other hand have only the basic high school level.

If you look at the first minute of so of this video, you'll see the flame changing colour due to the mixture of the fuel and air being burnt. If there is exess fuel in the mixture it will be a highly visible yellow flame, if it's the mixed fuel/air at the correct ratio it will be blue but almost invisible.

http://www.youtube.com/watch?v=IpuVOYRb2pU

In Olegs video we a an engine that has just been started. From the video shown the engine is barely ticking over.

Now the merlin engine had what's called a high overlap cam shaft, which means that the inlet and outlet valves are open at the same time for a long time durring the otto cycle. (It allows fresh fuel air mix to enter the combustion chamber at the same time as the last of the exahust gasses leave the combustion chamber.) This makes the engine more efficient within the engines power band BUT at low revs the engine engine runs rough due to incomplete burning of the fuel air mix in the combustion chamber. It's what known as a 'Lumpy Cam' in automotive circles. It means at low revs there is a lot of unburnt fuel in the exhaust gasses.

Now I know some people here want Oleg to demonstrate a 'Blue Flame' in an update video. I for one, most emphatically, do not want to see this!

Cheers! ;)

That must be one of the Messerschmitts engines that fly in Germany. They're all Buchon switch backs to Daimlers but you'd never be able to tell. A G6 G10 and a G4.

-Nice update, but how about sound? It's my idea or is the same original sound of il2?, is only temporal?.


-Best Regards.

Happy first post!

Need to read the first post in the update!

Cheers!

Yes Oleg I was going to say my military experience has shown me the most exhaust flames are a bluish hugh.

You did your homework, Oleg, just as we expect from you.

The orange flash exhaust would be correct if it is running at idle and too rich with fuel, but at normal power would be blue.

The flash is pretty good, not perfect, but good enough.


2 more comments:
The engine audio needs a lot more work.

Someone needs to cut the grass.


Keep up the excellent work!

S!

A special query
 

Hi Oleg,
I dont know where to post this query
First post got lost in last week update
Thank for the tip ( from a kind chap )to repost early in the new update so it will be seen ...
Sorry if I am out of place ,

QUERY:
I am finishing a FFB firmware project and I would like to know if BOB 's FFB handling will be compatible with the Microsoft FFB stick on which my firmware is based.
I am only using the "Spring" feature , The most important one ...

Thank you
gb

What about this pic?
Overdid the priming??

Over priming, or some issue in the carburetor itself.

That much flame is not a normal thing.

Hi Oleg,
I dont know where to post this query
First post got lost in last week update
Thank for the tip ( from a kind chap )to repost early in the new update so it will be seen ...
Sorry if I am out of place ,

QUERY:
I am finishing a FFB firmware project and I would like to know if BOB 's FFB handling will be compatible with the Microsoft FFB stick on which my firmware is based.
I am only using the "Spring" feature , The most important one ...

Thank you
gb
Sorry for the double post ,i dont seem to know what I am doing.....

Thank you Oleg, and thank you again for videos.

Thanks for the update Oleg.
Here is a video of a Spit start up taken at Wanaka NZ.


Check at 1.10minutes

Maybe Spit was over primed.

http://www.youtube.com/watch?v=HcSjzNlsvMo

Stack fire...The engine isn't even firing there. Some fuel vapor has clung to the stacks and caught fire. Something like when you're tuning a new..old type.. engine with a carburetor and it back fires and the carb catches fire.

definitelly more red than blue . Of course with the engine stopped and cooled

the video isn´t mine but I was there and can see the engine start 3 times

http://www.youtube.com/watch?v=B4X1h...yer_detailpage

This reminds me of the discussions about the cannon flames in IL2, as much as some people can be a bit pedantic, it gives me a nice feeling too know that we will have another ten years of forums to read when things get a bit slow at work :cool:

I realise the main point of the update is the colour of the exhaust flame but I think perhaps what's more import is the extent to which the exhaust flames light up the side of the aircraft.

I've seen two night runs and the exhaust flames (sometimes quite large) didn't have any lighting effect on the aircraft - you just saw the flames - nothing visible behind them.

I think the few night videos posted here confirm that fact. I'm not familiar with the proper terminology but in my view the exhaust flames are not an ambient light source.

Take a look at the night time clip and tell me the RAF would have been happy with an aircraft giving off that much light at night. "Sitting duck" springs to mind.

No its normal starting.

And to quote myself

[QUOTE=Oleg Maddox;203623]Hi,

2. Effect of exhaust flame at night time. Emulation of each cylinder exhaust in relation to emulation of real engine cylinders work by a program.
My question to community: isn't it too yellow? Maybe to add a bit red color in a mix with yellow? It is tunable really, so I would like to listen suggestions


It actually needs some blue, though I know nothing of computer colours, I've run plenty of short pipe four strokes, and yes, petrol burns yellow in a rich mixture, but as the revs increase the combustion cleans up the flame will become blue.

ti think youl find that photo is off 85 sqdn

While I do agree that the initial engine startup (flames) is too fast, as for the rest - the engine flames should behave depending on how we use the engine. Different mixtures and priming should effect how the flames look (color and volume). Not to mention the overall effects that different usage will have on the engine, like shown in the videos.

These look like startup pictures to me Harti. btw it's a griffon engine but the merlins look similar on initial startup.

i like the wealth of knowledge that is displayed here sometimes. from a brief video and question on flame colour we get a huge discussion on possible engine states etc, actually learnt quite a bit. so has the question been answered with another one - will the flame colour reflect different levels of fuel/air mixture and engine condition, and if so, what are the factors at play in the video to give this particular flame?

We have videos showing it, some have seen it and most have read it in the accounts from pilots and crew that flew.

The Halifax I and II had terrible trouble with their positions being given away by blue exhaust flame from the merlins. They tried to cover it with metal guards but they glowed red instead. Only when the hercules engines were fitted in the III was the problem resolved.

I would like to hear the argument and evidence as to why it should be red and yellow rather than blue.

I have many airshow daytime films of Hurricanes, Spitfires and the Buchon (merlin-engined) 109 taxying and low passing. There are no flames visible in any of these films. They would often give yellow 'flowers' of flame on startup (see other posts) so your video seems generally correct for daytime conditions except the exhaust gases seem to have too much "thrust" on that initial startup.

It's about the startup effect and not the exhaust glow of running engines. Whether we'll see a blue glow at night, possibly even depending on engine settings as explained in some posts (probably overkill though), is a different issue. Fingers crossed :)

Anyway, nice details and I'm especially happy to see the subtle reflectivity on the plane skin again, which has been absenst in all screens since months.

You know on one of the other sim forums they're having a discussion about why an HP 0/400 might still be able to fly with no wings and only 1 engine, I guess we should count ourselves lucky all we got is what colour the exhaust flames should be

Thanks for the update Oleg!

About the flames, it seems to me there are two main effects:

1. Yellow / red flames from excess fuel exiting the exhaust sometimes during startup. This is so visible it can be seen both at day and night, as shown in pictures in this thread. This is probably so bright it will illuminate the plane at night.

2. Blue flames: at night you can see that the exhaust itself is has a blue glowing color, at least at high power settings (see the Reno video earlier in this thread). This isn't very visible in daytime. Pilots often describe seeing only the blue exhaust flames of the enemy planes at night.

Edit: So my conclusion is:
- The startup flame in your first video looks perfect (and this should illuminate the plane if seen at night)
- The yellow flames in your night video: If this is supposed to be the second effect (engine running smoothly), the flames should probably be more blue and not illuminate the plane that much. But my main reference is the Reno video earlier in this thread, maybe running at lower power settings with shorter exhaust pipes (Spitfire vs. Sea Fury) gives more yellowish flames.

Here is another example of the first kind of flame:
http://www.youtube.com/watch?v=uNXGDi79aPw

Sorry, but the motor in the dark is running, not starting up. The timing between the flashes is too even. Also, if it was starting up, we'd presumably see a similar long flame to the daytime start clip.

Skoshi does have a point in the cylinder scavenging / cam overlap being a possible source of unburnt fuel, but all the video and literary evidence screams 'blue!';)

Hmm good point about the 2nd video. To be honest I'm not sure what exactly it's showing; the engine indeed runs evenly but with very low RPM (or time is slowed down). At any rate I have a hard time imagining the final game will show all planes at night with a strobe light effect around the engine...

I don't think an exact colour match could ever be achieved as every monitor shows a slightly different colour anyway. The only comment I would make about the first video compared with the real life videos people have posted is that in real life the yellow flames are produced by a cloud of unignited fuel/air mixture being expelled from the engine and subsequently being lite by the burning exhaust gas once the engine has fired. As such no pressure is involved and the flames are quite 'lazy' in appearance. In Olegs game video the yellow flames are being expelled with considerable force. In the second video it looks like the engine is idling before takeoff rather than running under power so exhaust gases could well look more yellow than blue.

+1000

And it also depends on the mixture / priming of the engine in the first place. The biggest remark is just that - on low RPM when starting an engine the flames should be 'lazy', because un-ignited fuel is coming out of the engine cylinders and thud burns outside it - vertically. Only when the engine actually starts the flames get expelled horizontally (axially with the each cylinder exhaust pipe) as in many videos posted here accompanied with a transparent blue flames. Not to mention the vast amount of smoke as well (but this effect is done nicely).

Oleg,

Flame looks fine...only lasts a few seconds anyway. The visuals we've seen are amazing. I hope you put equal effort in getting the sounds right. IMHO :twisted:

Have found this table for the Allison V-1710 Models 'E' and 'F' (from Allison Service School Handbook ALD-SSH-5) I know its not a Merlin
;)
http://img525.imageshack.us/img525/6...cehandbook.jpg

I'm hoping the following images clarify my question more:

http://img257.imageshack.us/img257/3...linesbasin.jpg

Today : "Safe Harbour" from heavy seas to the left, docks to the right, near city centre
http://img808.imageshack.us/img808/5...nkirkbasin.jpg

Aerial '44. Harbour and sea access near city centre. Would overlay the image above to the right quarter, no channel going left.
http://img89.imageshack.us/img89/2940/dunkirk44s.jpg

You know Alpha, in all the times I've seen Merlins start up, on Hurris, Spits, and P51s, and a Lancaster, I've never, ever seen a stack fire. Not one. I know it happens but it is far from normal and not a common thing.

Can we agree that it should not happen at every start up?

I know that there are those that would like to see it every time, and they would be wrong.

Cracking find. I searched for a clip like that, but found nothing.

BTW, not all engines start the same. Here's a clip I found which makes me think that a night-time startup, if similar conditions were applied to a Spitfire, could be a really impressive pyrotechnic show!

http://www.youtube.com/watch?v=kXpQv...eature=related

Cheers, MP

...


More reading about exhaust flame vs detonation ~ grade of fuel used.


http://users.teledisnet.be/web/mfe39146/PIF521.jpg



http://users.teledisnet.be/web/mfe39146/PIF522.jpg



...

That's very useful. It also confirms what most people have been saying, that the temperature of the exhaust gas and the subsequent colour is a consequence of a variety of factors that can affect fuel burn. High or low power, mixture settings, etc, all seem to play a role.

The most interesting part in the picture you posted is the possibility to diagnose problems or verify the correct operation of the engine.

For example, leaning the mixture. In today's general aviation piston engined aircraft, leaning is usually done by moving the mixture lever back until you see the EGT (exhaust gas temperature) gauge reach a peak, if you lean any further it will start dropping again. So, for example let's say the peak EGT occurs with the mixture lever at the 75% forward position. If you move it forward/backward from that position the EGT will drop. What the pilots do is start leaning and watch for the reversal in the needle (watching it rise, then drop again from over-leaning), at which point they enrich it a bit to get it back to peak EGT.
Then, they enrich a bit further until the EGT drops a set number of degrees, which is usually specified in the aircraft manual. This is usually stated like this: "lean mixture as follows: for best cruise enrich to 50 degrees below peak EGT, for best economy enrich to 30 degrees below peak EGT". Peak EGT is not a constant but that doesn't bother us. For example, if running 75% power the EGT on the whole (which includes the peak value) will be higher than what we would get if running at 60% power, but all we care about is "catching" the highest temp on the gauge and enriching a set number of degrees from that, not what the highest temp actually is.

So, why do we care? Because i think most aircraft in WWII didn't have an EGT gauge, but the picture you posted showed the same method being possible to use by watching the exhaust stacks.
Lean mixture on the allison gives a blue flame, rich mixture gives a red flame near the stack and a blue flame further away but it says the blue flame moves closer to the stack as the mixture is corrected. Finally, the correct mixture has the blue flame near the stack and the red flame behind the blue one.
So, one could theoretically lean the mixture until he sees too much of a blue flame that signifies the peak EGT (the higher temperature of exhaust gas, which gives off the blue glow). Then, they would have to enrich it a bit as described before, judging when to stop by the appearance of red flame behind the blue one, but not going as far as having the flames reversed (blue after red) because that would signify an overly rich mixture.

Excellent stuff!

Excellent information find!
It shows that all types of fires can be seen depending on what is happening in the engine.

Unfortunately I doubt that the game engine has been programmed with allowance for these variations if Oleg is only just now asking for information on stack-fire types.

Oleg: I hope I am wrong. Am I?

Many engine heads know the exhaust smoke is a good indicator about how the state of an engine is...

If you test run engines in a test bench without the exhaust pipes on the colour of the flames are also a decent way to identify any problems...

My observations of engines i have worked on

idle should be yelow with a blue base

i work with RPM`s not power settings..

at 2800 RPM`s with no load on the engine it should be yelow with a small red base

at 2800 RPM`s with load its a 50/50 yelow and red

at max settings and full work load it should be blue base with red and yelow..

This is what i know from carburator engines...

When a engine works the tempeture will change etc....

Overprimed engines will make a yelow flame, normaly with werry dark grey or black smoke puffs....

But there is more to it.....how well do the oilring scrape the cylinder wall etc....a small ammount of black smoke doing start up can indicate a small ammount of oil left in the cylinder.....thats actualy ok as long it stops when the engine gets to operating tempeture...

Whitesmoke is also ok...again if it stops at operating tempeture

White and blue`ish smoke on startop is a no go....that is both water and oil and thats bad no matter if it stops or not, that is a mixture of oil and water...and that should not happen.....

I personaly dont care about colours, the awsome part for me was the working of each seperate cylinder....that is cool, and that realy give my hope up for the shot up cylinders...German and british plane dont like that, but later on the yanks radials aircooled will love that...we might get the **holy crap i landed on 4 cylinders**

Spits and 109`s wount like loosing cylinders....the 190 will fare abit better on it....man just the ideas about the different things that can go wrong with engine hits....

woooooot!!!

LTbear

Please , click the YouTube link to directly watch this video in bigger screen and HD
in order to see all details :cool:

http://www.youtube.com/watch?v=EsAXDB-sV8w

Wow, we can have this stuff already in IL2?!?

Now that would be cool to have mod/developement in 4.10m.

Schhhhhhh

Its the unmentionables

:)

Thanks for the update Oleg, would it be possible next week to show some footage of fully weathered fighters having a dogfight, this would be most pleasing. Many thanks.

Peace to you all this christmas.

Sounds good Tree.

I'm trying to find that aviation artwork of the English boys sitting on a wood fence as they watch a Spitfire coming towards them with it's gear down as it's about to land on the field behind then. I always think to myself I wish I was sitting on that fence.

OOO found it

Since you said you have the colors for the other types of flames, i guess we are only talking about the "yellow" flame.
I think would look better in with a more orange tint. That may also make the greenish reflections a bit more "warm".

Thank you for the update.:-P

Fair enough but there really shouldn't be any reflections on the aircraft skin. I've yet to see one piece of evidence showing reflections on the panels of the aircraft from exhaust flames. While it looks nice, that kind of illumination would have been completely unacceptable in wartime, not to mention the effect on pilot vision.

Here is more sound of prop then of engine really, especially with High RPM.
But thanks for the sample

Yes, we have it. but also with the drawn samples :)

Sure, with high RPM and right mixture.

Oleg,

In terms of the initial startup flames I think you have the perfect colour already, no more red required.

I attach comparison shots from the previously posted P-51 Old Crow startup against the flames in your video. You have them spot on I think.

Once the engine is running it looks like red/blue is the expected colour though. I haven't seen any yellow flames from a running engine yet and the colour chart previously posted only mentions yellow flames when the spark plugs are defective.

Would be nice to occasionally see the large lazy flames caused by an overpriming stack fire too.

Thanks:grin:

Lets not get too carried away... PLEASE -Watch the whole vid to see what happens as engine revs are increased and decreased.

http://www.youtube.com/watch?v=Xs_qt4GCj4A

Very nice find!

And a good point. It is important to note the engine RPM changes. When they occur, it affects how the fuel is burning in the engine. Variable and constant RPM's are two completely different processes happening inside the cylinder. In other words - when on constant RPM (provided we have the ideal mixture) the engine is burning fuel just like it should have, while with variable (changing) RPM the mixture and overall fuel burning process is far from ideal.

i. e. - for the very same reason there are two different fuel consumption figures in cars: one for driving in a city where throttle changes are frequent and fuel consumption is higher, and another for highway driving where fuel consumption is much lower.

Yea, a bit or red and blue would make it more realistic

Excellent find FG28_Kodiak:grin:

Oleg&Team, thanks for the update. Completely OT but a very interesting document for the future:

http://www.cockpitinstrumente.de/arc...0Air%20War.pdf

and another one:

http://www.cockpitinstrumente.de/arc...%20WW%20II.pdf

Every time I've seen Merlins start from cold they have the lazy flame effect from priming.

Some times depending on the lighting conditions you wont see too much of this effect, the camera though does see it very well.

I'm fortunate to be a member of FOD (Duxford) so I practically lived there a few years ago and saw a lot of aircraft in preparation for shows and being started for testing etc etc, Merlins especially as there are so many of them at Duxford :)

Perfect find fireflyerz, thanks for posting. Must have had the mixture bang on in this run up, lots of blue and more blue. A brief flash of orange/yellow flame on initial start - just like in the 1st Oleg video.

A red flame from a single stack at one stage I noticed.

I was so glad when they turned the lights off. No illumination of the side panels at all really - maybe very slight at one point but just immediately around the stacks. Best video yet.

Cheers

The flame color is a product of the temperature (that whole quantum-mechanics stuff). For these engines one of the biggest factors is the mixture.

A leaner mixture will result in higher temperature (and higher power) - which results in flames on the blue side.

A richer mixture will result in lower temperature - so the flames go to the orange/red side.

In my experience with Cessnas, you would start the engine at full rich fuel mixture. I would think most engines would be started at full rich, and leaned afterward.

In a new engine, this would probably result in yellow flames on startup. Once the engine is leaned, it would go toward blue.

The only thing about these videos is they are showing old aircraft with old engines. I would suspect that the conditions of individual engines (even different cylinders on the same engine) and the fuel systems probably play into why some videos show a variety of colors.

I would hope that different flame colors are modeled (blue - orange/red), depending on the engine conditions.

Nice, I love the how you can see the effect of the prop torque effects on the aircraft when throttled up too fast.

The only things I have to say echo what people have said before; the smoke in the startup video disperses too quickly and the exhaust flames should not light up the side of the aircraft in the second video.

smoke disperses differently depending on what it consists of, relative atmosphere, humidity, temperature and the like - and so does the color pf the flame vary depending on the fuel, the mixture of fuel/air, the last time the engine was fired and the way it was shut down, etc...

so many variables that to deduce whether a single video render depicts the effect accurately or not is ludicrous -

ever see a stack fire? that is why at airshows you always have a guy or two with fire extinguishers standing by any warbird that is about to have its engine started.

the color and strength of the flame can be from practically invisible - to a massive yellow flame and fire. The smoke volume and color can be just as variable.

should Oleg try to cover the entire range of this effect? Of course not - the resources are better used elsewhere. Should there be some variation between night and day, cold engine vs refuel rearm restart? Probably

Will everyone be pleased with whatever these effects end up as? No

This is just another example of a developer trying to add small details that bring life and character to a simulation and having it blown out of proportion utterly by a few professional smoke and flame specialists ad alta

:grin: True!

I don't think we need to search for anymore exhaust flames. That video has it all in one.

Oleg asked for opinions, he got opinions; I think there was a fair amount of worthwhile input in the pages of this thread, some of which I'm sure Oleg found useful. He can sort the wheat from the chaff.

Did it ultimately overshoot the mark? Yes.

Was it nonetheless a good discussion? Yes.

I know I've learned a lot! Expect more of the same next week :)

Cheers, Spinner

a littel more red a littel orange less yellow. but it looks good dude get that track bug sorted and get it to the stors asap DO LIKE

From Jack Torrence, 43 Squadron Hurricane II night intruder pilot.

Hope this helps!

You're perhaps right about the smoke (I watched the video again), but as for the second part I am referring to the lighting effect of the exhaust flames in flight in the second video and not the ambient lighting effect of a stack fire at engine startup. I find the mod effects videos a bit gimmicky in that they presumably depict a stack fire on every startup, but they're still a bit more convincing than the SoW videos so far in terms of the smoke and the exhaust flames, not that we're really sure what mixture/RPM settings are depicted in the second SoW video, which of course makes all the difference.. Not that it matters about the eyecandy IMO as long as the engine simulation in SoW is better. :) Still, I'd love it if Oleg & Co. took a good look at the Seafire video above and the various others posted and did their best to replicate the differences in the various engine settings/engine temperatures' effects in the sim, although not necessarily now. I'm not gonna call myself a "smoke and flame specialist", but I'd say that it's pretty much essential that at least some kind of effect exists around exhaust flames for night-fighting to be playable in the sim, which is something that I'm really interested in. Of course, anything like that could wait until we have some kind of reason to have realistic effects in this department, i.e. more appropriate flyables for night-fighting, like hopefully the Beaufighter at some point? Although the second video's cool, I think it would make it a bit too easy to spot aircraft at night compared to how difficult it's been described to be in reality.

It is, but almost impossible to configure. I had this only in 2006, when somehow I had the correct settings. After I reinstalled windows XP and used the same IL2 installation as before, the effect was gone. I've spent hours trying to find the correct setting but no-one can tell me how.


And for exhaust flames, here's something completely different:

http://www.youtube.com/watch?v=5pMHZaMFw9c

Wrong engine.

Totally different fuel system.

Why bother posting this its totally irrelevant to a Spit MkI Merlin

It's still a carburetor. So what if it's a Griffin. Mixture is mixture.

Somehow Alpha, I don't think even the most Aspergers-ridden detail-hound is expecting Maddox Games to individually model the effects of mixture and RPM, etc. on exhaust flame size and colour for each individual aircraft. I think that we're just hoping that maybe, if there's time at some point in the future, there will be a general effect that's about the same for each aircraft that changes the size/colour/presence to some degree. So...somewhat of an unfair criticism of fireflyerz' post I feel.

Triple-choke Bendix-Stromberg updraught carburettor...

Plus I was posting the vid more so to help Oleg get the amount of flame exausting at differant engine revs correct.

Ignore it; if Oleg wants to use it, he won't ask Alpha.

Look its simple just post relevant info.

You might as well post any night time exhaust flames vid if you think in your terms as its simply not relevant unless its a Spit MkI

If you don't see that then carry on.

And thanks for the name calling, shows your a real class act.

Well, there's a lack of relevent period videos, in colour, showing the exact transition. Considering the team are willing to model a modern version of England and France, I think Jafa's video is a nice compromise.