PDA

View Full Version : Control settings...Rich-Lean Mixture



DoolittleRaider
May-08-2013, 22:41
Spitfire CEM:

I cannot get the Rich-lean mixture to work. Have assigned key 9 and 0 to lean and rich. No effect. I try to use interactive mouse pointer-click...No effect. Yes, I am set in Realism Options for CEM. All other controls work, with keys or mouse clicks.

In realism options I have have tried both "anthropomorphic..." Checked and UNchecked. Can't select Rich-Lean when flying.


Any help will be appreciated.


Also, on another matter, the Wiki manual for Spit talks about Boost settings. Could someone explain how, when, why one should change "Boost" settings? In Controls, there is a "Boost Cut-out" Key option, and also several "Slow-running Cut Out" key options. I can find no explanation of those functions/keys.

92 Sqn. Philstyle (QJ-P)
May-09-2013, 04:39
Spitfire CEM:

I cannot get the Rich-lean mixture to work. Have assigned key 9 and 0 to lean and rich. No effect. I try to use interactive mouse pointer-click...No effect. Yes, I am set in Realism Options for CEM. All other controls work, with keys or mouse clicks.

In realism options I have have tried both "anthropomorphic..." Checked and UNchecked. Can't select Rich-Lean when flying.


Any help will be appreciated.


Also, on another matter, the Wiki manual for Spit talks about Boost settings. Could someone explain how, when, why one should change "Boost" settings? In Controls, there is a "Boost Cut-out" Key option, and also several "Slow-running Cut Out" key options. I can find no explanation of those functions/keys.

Which variant are you flying?

Spitfires can have auto-mixture. I think only the Spitfire 1 (not the 1a, or the 2a) has manual mixture control.

Foul Ole Ron
May-09-2013, 05:48
You can only lean out the mixture when the throttle is advanced far enough - maybe that's the issue you're experiencing? When the throttle isn't advance far enough it seems like the mixture control level is locked in place and doesn't move at all. I've never really found much use for the lean mixture anyway as most flights in the server have no need for long distance flights where you need to conserve your fuel.

The boost cut-out refers to the War Emergency Power setting: http://en.wikipedia.org/wiki/War_emergency_power

In the Hurricane you pull out the knob in the dash and in the Spitfire you push the level forward in the throttle quadrant and then push the throttle all the way forward - gives you more max boost (i.e. engine power) for short periods which would usually have been used in combat or trying to overhaul an enemy who was flying away from you. Just have to watch your engine temps and how you fly when using it. Ideally you'll want to incorporate maneuvers that bring airflow into the engine to keep temps down.

Robo.
May-09-2013, 11:06
Spitfire CEM:

I cannot get the Rich-lean mixture to work. Have assigned key 9 and 0 to lean and rich. No effect. I try to use interactive mouse pointer-click...No effect. Yes, I am set in Realism Options for CEM. All other controls work, with keys or mouse clicks.

In realism options I have have tried both "anthropomorphic..." Checked and UNchecked. Can't select Rich-Lean when flying.


Any help will be appreciated.


Also, on another matter, the Wiki manual for Spit talks about Boost settings. Could someone explain how, when, why one should change "Boost" settings? In Controls, there is a "Boost Cut-out" Key option, and also several "Slow-running Cut Out" key options. I can find no explanation of those functions/keys.

Hi mate,

'boost' is basically manifold pressure, it's the red gauge on the right hand side of all british fighters. When manual refers to certain boost settings, e.g. +6.25 lbs. it's basically the throttle lever position.

'boost cut-out' is a mechanism to increase the output of Merlin powered aircraft (all RAF fighters) using 100 octane fuel by increasing boost up to +12 lbs. Consider it emergency war power, assign a key and use it as necessary. You need to activate the BCO and then move your throttle back and forth. You will see your manifold pressure rise to +12 pounds and engine will sound like it's working harder (because it is).

'slow running cut out' was a mechanism to cut the engine once landed. You can use fuel cock = off or this method if you want to do things by the book. In the Spitfire, this is not animated, but it's the small ring shaped thing on the bottom right of your instrument board. You'd idle your engine and pull the small lever to starve your engine of fuel.

As for the fuel mixture, there are only 2 settings on all British planes and they are AUTO RICH (towards you) and AUTO LEAN (away from you). The treshold is around 50% of the lever's movement. There is a hiostorical reason for the lever to be 'other way around' and you will find the lever will move back to auto rich if you throttle back. This was a real life feature, the levers were interconnected in order to prevent an engine damage at certain settings, e.g. low boost and lean mixture. For normal flying, keep it at default position (auto rich) for 100% of the time, you would only go auto lean in cruise economy flight.

Hope that helped. If you need some more information and are interested in flying for the RAF, check this website and join us on TS:

http://www.aircombatgroup.co.uk/teamspeak.php

DoolittleRaider
May-09-2013, 18:08
I am flying the IA.

Still very confusing to me...Here's what I see.

I think the lever fully back is giving me Rich, based on performance...Even though the Info Window says it is 0% [Lean] I can't tell for sure yet...

http://i440.photobucket.com/albums/qq121/Doolittle81/FullRichorLean0percent_zps6074a94a.jpg (http://s440.photobucket.com/user/Doolittle81/media/FullRichorLean0percent_zps6074a94a.jpg.html)


http://i440.photobucket.com/albums/qq121/Doolittle81/FullRichorLean100percent_zps3b0a8683.jpg (http://s440.photobucket.com/user/Doolittle81/media/FullRichorLean100percent_zps3b0a8683.jpg.html)

DoolittleRaider
May-09-2013, 18:22
Disregard all my posts please...

I found the answer:

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.

and


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.
...

.... Too many other things to fiddle with by way of CEM, but mixture control thankfully isn't one of 'em.

ATAG_Snapper
May-09-2013, 18:33
The top picture = good to go. Auto Rich mixture (which confusingly and misleadingly = "0%").

Bottom picture = Auto Lean (yep...100%. Go figure! LOL).

I feel your pain. It was an absolute nightmare (and lots of shaking, burning out Merlins) until IvanK got it sorted with the devs. You can imagine the consternation the Rolls Royce engineers would've felt if young 19-year-old pilots with 20 hours on type would have needed to fine tune fuel mixtures on a 12 cylinder 1100 hp engine at varying altitudes under combat conditions! Pitch, throttle, rpms, boost, and temps were enough! LOL

ATAG_Snapper
May-09-2013, 18:38
Hey D.R., glad we could help. :D

DoolittleRaider
May-09-2013, 21:19
Thanks again...
http://i440.photobucket.com/albums/qq121/Doolittle81/1941Salute.gif (http://s440.photobucket.com/user/Doolittle81/media/1941Salute.gif.html)

RAF74_Buzzsaw
May-10-2013, 00:01
Salute Doolittle

Please see the Team Fusion Wiki page for aircraft pilot manuals for all the aircraft.

http://www.theairtacticalassaultgroup.com/wiki/doku.php?id=start