Flying the P-40?

[Knarley-Bob]

Fuel ratio and prop speed to fly with?

 

Thanks

 

[BlitzPig_EL]

I mostly run the engine at 2600rpm unless I'm in a really dicey situation.  Just set mix for Auto Rich.  If you are on a long, non combat transit at altitude, pull RPM back to 2000 and set mix to Auto Lean, for some fuel savings.  

 

*EDIT*  And do make sure you take the later engine in the armaments tab, it makes the P40 a far better aeroplane.

 

Edited July 29, 2024 by BlitzPig_EL

[R33GZ]

I don't know if anyone else does this, but don't firewall the throttle on take off, it cooks the engine. The manifold pressure is off the clock and blows it apart before wheels up. Not sure if this happens with the engine modification or not. It's a force of habbit for me as the P-40 was the first collecter plane I purchased

[kraut1]

On 7/29/2024 at 8:40 PM, R33GZ said:

I don't know if anyone else does this, but don't firewall the throttle on take off, it cooks the engine. The manifold pressure is off the clock and blows it apart before wheels up. Not sure if this happens with the engine modification or not. It's a force of habbit for me as the P-40 was the first collecter plane I purchased

The very special thing about the P40 is that the Manifold Pressure is not limited automaticly.

You have to watch the Manifold Pressure constantly during a mission and you have to care that the max. limits are not exceeded. The Manifold pressure depends on the throttle position, RPM, altitude and speed. And in some respect by the mixture (the max. Manifold pressure is only available at FULL RICH as far as I know (But I never used it).

(I myself am still learning to operate the P40 engine)

 

The P39 with a similar engine is much more easier to control with realistic settings and a big advantage is that the water cooler temperture is is an easy to check parameter to avoid engine damage.

 

[357th_KW]

The bigger issue is that the prop governor is very lazy, and so a rapid increase in manifold pressure will give you a rapid increase in RPM - often well beyond redline.  Exceeding the manifold pressure limits will damage the engine pretty quickly.  Exceeding the rpm limits significantly will kill it almost instantly.  Running slightly below redline (2900rpm or so) can go a long way in helping prevent this terminal over-rev.  If you’re trying to achieve maximum speed or climb rate in a steady state, sure use all the RPM.  But if you’re dogfighting, pull it back slightly and you’ll have a lot more margin for error in your engine management.

[Knarley-Bob]

Where should prop % be set at?

Edited August 7, 2024 by Knarley-Bob

[LukeFF]

43 minutes ago, Knarley-Bob said:

Where should prop % be set at?

 

Follow the pilot's notes on the Specification page. 🙂

[69th_Mobile_BBQ]

On 7/29/2024 at 11:47 AM, Knarley-Bob said:

Fuel ratio and prop speed to fly with?

 

Thanks

 

 

If you're using the non-modification (original) engine, the manifold pressure and RPM gauges have green markers on the dials to show optimal/max continuous settings.  I usually set-it-and-forget-it when using the original engine.

[the_emperor]

On 8/7/2024 at 8:23 PM, Knarley-Bob said:

Where should prop % be set at?

 

70% ~ 2600rpm

90%~2900rpm (to prevent overreving)

 

[Knarley-Bob]

Thank you,

Sir

[FeuerFliegen]

On 8/7/2024 at 2:23 PM, Knarley-Bob said:

Where should prop % be set at?

 
For the later engine option, you can max it out and still be in continuous mode at 75, even 76%