Mixture modelling & effects? (Merlin engine)

[MadTommy]

I'm confused about how mixture presently works in game for the Brit Merlin engines.

It simply seems to do nothing. In previous version, previous patches, it would affect engine performance. The (useless) CloD manual talks about exhaust flame colour, but that seems like a useless guide.

When i'm flying a Spit2a, i take off with rich (100%) mix, then once over 1000ft it seems to make no difference if i run lean or rich. Only thing i notice is you can't run 'boost' on lean mix.

It all seems a bit messed up and normally i never both adjusting mixture, am i missing something? I thought you had to lean mix with altitude.

I'd love some clarity on this subject from some knowledgeable chap.

Cheers.

[ATAG_JTDawg]

http://theairtacticalassaultgroup.com/forum/showthread.php?2292-Dealing-with-the-Merlin-Rumbles should all be in there if not ask more q+a :)

[Dutch]

Well Tom, the thing is that it was screwed up before, and now it works properly. Just stick it in auto-rich, fully back, and leave it there. Only use the auto-weak setting (lean) if you plan on making your fuel last around 2 hours. :thumbsup:

[MadTommy]

Cool thanks, that's all i needed to hear!

[Meaks]

http://theairtacticalassaultgroup.com/forum/showthread.php?2292-Dealing-with-the-Merlin-Rumbles should all be in there if not ask more q+a :)

This is great stuff JTDawg,thanks very much for giving us this link,Ivan's work is incredible:thumbsup:

[ATAG_Snapper]

I've made IvanK's "Merlin Rumbles" thread a sticky. Twice today I've referred two new players over at 1C to it. No doubt there will be returning CoD players who were confused by the mixture issue in earlier patches and will benefit from this thread as well.

[=AN=Felipe]

I'm confused about how mixture presently works in game for the Brit Merlin engines.

It simply seems to do nothing. In previous version, previous patches, it would affect engine performance. The (useless) CloD manual talks about exhaust flame colour, but that seems like a useless guide.

When i'm flying a Spit2a, i take off with rich (100%) mix, then once over 1000ft it seems to make no difference if i run lean or rich. Only thing i notice is you can't run 'boost' on lean mix.

It all seems a bit messed up and normally i never both adjusting mixture, am i missing something? I thought you had to lean mix with altitude.

I'd love some clarity on this subject from some knowledgeable chap.

Cheers.

Spit IIa

Normal (Rich) mixture is use for all purpose ok? Normal cruise, 2600rpm +3PSI or +7PSI (its called continuous cruise) (ill check this values for PSI ok? in another post i put this values too but i have to confirm, +3 PSI its right, +7 PSI ill check)

Here its diferent of IL2 1946 when you reduce mixture becouse high altitudes...

Here we reduce our mixture (Spite IIa) for "economical cruise". Economical cruise its use to reduce your fuel consumption to lower indicators... (ill check and post too), so... how i put my engine to run in weak cruise? our economical cruise... Simple... reduce your RPM for 2400, reduce your boost under +3PSI and change your mixture, its done, you'll be flying in economical cruise...

I use this for a long cruises at high altitudes when im looking for enemys under 20k+ or long cruises for patrol...

Simple like that ;)

[DoolittleRaider]

Well Tom, the thing is that it was screwed up before, and now it works properly. Just stick it in auto-rich, fully back, and leave it there. Only use the auto-weak setting (lean) if you plan on making your fuel last around 2 hours. :thumbsup:


Hmmmm...

Something is still not quite right.

In the INFO window for engine status, whether I have selected analog (the vertical graph-bars) or digital Letters and percentages, it shows RICH (100%) when the Mixture lever is fully forward, not fully back.



I also assume these two Spit tutorials below are outdated...since they show full movement of the Mixture control-lever regardless of position of the throttle. I assume a patch (TF MOD??) 'fixed' that feature in late 2012? The tutorials also show Mixture level fully forward for Rich, not fully back...

http://www.youtube.com/watch?v=OH6FK4vs6ZA

http://www.youtube.com/embed/t6OJkp2v0lU?&autohide=1&showinfo=0&hd=1&autoplay=1



Still, only when I put the mixture control lever fully forward does the Info window show 100% [meaning Rich, I have assumed]


What am I missing here?

[ATAG_Snapper]

In a nutshell, in all models of Spitfires and Hurricanes, leave the lever pulled all the way back towards you and leave it there. This is Auto Rich. The correct fuel/air mixture is automatically fed to the engine for all engine settings, all altitudes, all combat maneuvres. This is authentic for all 1940-era Spits and Hurries.

We have IvanK to thank for this. He methodically and painstakingly covered each and every Spitfire and Hurricane model with the 1C/Maddox Games devs and got the whole mish mash corrected. Unfortunately, the older tutorials are a confusing legacy to the confusing disarray that was the mixture control for the RAF fighters. As witnessed here, the confusion still raises its ugly head when anyone comes upon an outdated tutorial. These tutorials were a valuable contribution at the time, since every RAF fighter inaccurately had its mixture control depicted. Since then, thanks to IvanK, it's just keep the mixture lever pulled back (Auto Rich) and forget it from start up to shut down. Just as the real BoB pilots did. Thank you, IvanK.

There will be those who will say that they prefer to take off with 10% fuel to save on weight and increase speed/maneuverabilty....so using Auto Lean would be valuable to extend their time aloft. I won't even go there since I fuel up 100% every mission and Auto Rich does me fine up to 33+ angels -- just as it did for the real 1940 RAF pilots. I have no urge to do a 2 hour convoy escort where Auto Lean would authentically have been used to extend the patrol time. If combat reared its ugly head, then the first thing done would be to pull the mixture lever back to Auto Rich.

0%? 100%? Doesn't really matter. Too many other things to fiddle with by way of CEM, but mixture control thankfully isn't one of 'em.

[Foul Ole Ron]

I don't use the info window myself but when you spawn in the aircraft you're set on full rich. To go to lean you have to push the throttle forward about 50-60% and then push the mixture to lean. If you throttle back at all it'll automatically flip the mixture back to rich as you should be using rich at lower engine power. You don't really need to worry about mixture unless you're planning to fly for a couple of hours. You'll spawn in the aircraft with the setting where you need it to be.

[DoolittleRaider]

Thanks very much!!!! It couldn't be simpler...

You are correct...The info window(s) is unnecessary, especially if one is trying to fly 'full realism'. I only created that window yesterday in my effort to sort out my confusion over the Mixture lever postioning, and it didn't help at all when all was said and done...just added to the confusion!

Thanks again!