Hurricane Rotol mixture controls?

[l3uLLDoZeR]

Originally Posted by klem

Normal flight is Mixture at Auto-Rich with the lever in the back position. Forward is Auto-Weak (ref: Pilots Notes) and only serves to assist high altitude low fuel consumption cruising, it isn't use for anything else and doesn't need to be used at all if you don't want to.

Right on, this was helpful. I was thinking you could fin tune the mixture to whatever percent you wanted..I didn't realize it was auto-rich or auto-lean!

In the real world setting the mixture even at 7,000 ft makes a huge difference in fuel burn, but if I go too lean the engine will run rough and really hot. I also can see my exhaust temps to help set my mix.


Oh and I'm glad you got a chance to jump in with some smack talk Tomcat, I would be lost without you!

[Dano]

But... if full rich = auto rich then why do I see yellow exhaust flames? I was under the impression that I should not see any yellow when my mixture is set correctly and thus the auto feature does not work correctly or is that realistic?

[klem]

The word "auto" relates to the engines ability to maintain the correct Rich mixture with changing altitude. However in CoD I do seem to be able to Lean the mixture off until the flame changes from Yellow to Blue, usually around 25-30% travel so either its modelling adjustable rich/lean level between the extremes or I'm simply hitting a crossover point.

I haven't found anything in the Pilots Notes that talks about gradual adjustment of Mixture, just fully back (Rich) or fully forward (Lean)

[Moggy]

Originally Posted by klem

The word "auto" relates to the engines ability to maintain the correct Rich mixture with changing altitude. However in CoD I do seem to be able to Lean the mixture off until the flame changes from Yellow to Blue, usually around 25-30% travel so either its modelling adjustable rich/lean level between the extremes or I'm simply hitting a crossover point.

I haven't found anything in the Pilots Notes that talks about gradual adjustment of Mixture, just fully back (Rich) or fully forward (Lean)

In the ferry pilots notes it states;

Mixture. Mixture is either Automatic Rich or Automatic Weak. The lever friction is adjusted by a knob concentric with the throttle friction control.
The throttle and mixture controls are interconnected and in some cases it will not be possible to bring the throttle back below +2 boost without moving the mixture control. In these aircraft no harm will result by moving the mixture lever back with the throttle until zero boost is obtained.
In some of the latest aircraft mixture control is fully automatic and there is either no lever or if one is fitted it is wired in WEAK.

[klem]

Originally Posted by Moggy

In the ferry pilots notes it states;

Mixture. Mixture is either Automatic Rich or Automatic Weak. The lever friction is adjusted by a knob concentric with the throttle friction control.
The throttle and mixture controls are interconnected and in some cases it will not be possible to bring the throttle back below +2 boost without moving the mixture control. In these aircraft no harm will result by moving the mixture lever back with the throttle until zero boost is obtained.
In some of the latest aircraft mixture control is fully automatic and there is either no lever or if one is fitted it is wired in WEAK.

I can only guess that the automatic mixture function enriches the mixture when required and if the lever was wired in Rich it would override the automatic function which would not be able to Lean the mixture. Just a guess though.

[Robo.]

Originally Posted by klem

I can only guess that the automatic mixture function enriches the mixture when required and if the lever was wired in Rich it would override the automatic function which would not be able to Lean the mixture. Just a guess though.

If you mean the interconection of mixture and throttle levers, this was done purely mechanically (spring on some aircraft, shape of the levers on a Hurricane). So if a pilot flying on AUTO LEAN pulled the throttle lever towards him to lower the boost, mixture lever was also physically moved to AUTO RICH position. Mixture lever was operating 'other way around' in all RAF fighter aircraft in this era for that very reason.

No matter how the devs decide to deal with the Italian approach, the levers in cockpit should move correctly. As for now, only Rotol Hurricane is OK, Spitfires and dH Hurri are wrong as for the Mixture lever animations + more importatnly, the mixture as such is modelled incorrectly. (1.05)

[Moggy]

Still at least it's not as bad as being able to start the Hurricane on main tanks. I've tried to send Luthier some documents and a film but his inbox is full.

[Hood]

Originally Posted by Robo.

If you mean the interconection of mixture and throttle levers, this was done purely mechanically (spring on some aircraft, shape of the levers on a Hurricane). So if a pilot flying on AUTO LEAN pulled the throttle lever towards him to lower the boost, mixture lever was also physically moved to AUTO RICH position. Mixture lever was operating 'other way around' in all RAF fighter aircraft in this era for that very reason.

No matter how the devs decide to deal with the Italian approach, the levers in cockpit should move correctly. As for now, only Rotol Hurricane is OK, Spitfires and dH Hurri are wrong as for the Mixture lever animations + more importatnly, the mixture as such is modelled incorrectly. (1.05)

In any case it's only relevant if you use the mouse to shift the mixture lever. If you use a controller you can simply reverse the key/controller input so that you click/push "up" and the in-cockpit lever goes "down".

Simples

Hood

[klem]

Originally Posted by Robo.

If you mean the interconection of mixture and throttle levers............................................ ......

No, I was replying to Moggy's previous post about later Automatic systems which he believes sometimes still may have had a lever in the cockpit but was wired to the Weak position.