Engine Power/Aircraft Speed

[Templar560]

 

1 hour ago, felixx75 said:

I also know the manual for the Corsair (AN 01-45HA-1), but I have found the same table twice, but with different contents. On the pictures you can see the known table, but on the one picture “Auto-Lean” is listed everywhere except for the TO, but on the other one “Auto Lean” is only listed for “Max. cruise” and “Min. fuel burn”. Both from the same manual. The question now arises as to which is correct...

 

 

That's interest cheers, but there does seem to be quite a lot of varying info out there! I managed to get about 227 running prop 2,500 rpm Cowl open about 15% Oil and intercooler closed with the mixture lever half way down. I tried the blower but I kept getting a hot carb warning.

[Templar560]

UPDATE:

Just had another flight with my friend and for control purposes we had exactlly the same controls set at the same heights on the same server. He was getting 120kts in the climb at 1000ft per min I was getting 180. We climbed to 20,000 it didn't fly above 210kts Auto rich Mixture, full blower, no cowl. 2,500rpm on the prop. we both stabilised at ~210kts.

[Esac_mirmidon]

The First chart is for a R-2800-8 engine (2000hp) DCS Version

The Second chart is for a R-2800-8W engine (2250hp)

Thats why the difference

5 hours ago, felixx75 said:

 

 

 

 

 

 

Edited 23 hours ago by Esac_mirmidon

[Saxman]

23 minutes ago, Esac_mirmidon said:

The First chart is for a R-2800-8 engine (2000hp) DCS Version

The Second chart is for a R-2800-8W engine (2250hp)

Thats why the difference

 

 

 

 

Shouldn't the DCS version be the 8W? Because that's what the 1D had.

[Esac_mirmidon]

The DCS manual says 2000hp engine so -8 and the left engine plaque chart says only Auto Lean for Max Cruise so....

Edited 23 hours ago by Esac_mirmidon

[tekwoj]

Mil power max time indicated in the dcs manual also suggests it's the worse engine.

[Saxman]

52 minutes ago, tekwoj said:

Mil power max time indicated in the dcs manual also suggests it's the worse engine.

 

3 hours ago, Esac_mirmidon said:

The DCS manual says 2000hp engine so -8 and the left engine plaque chart says only Auto Lean for Max Cruise so....

That needs to be addressed, then, because the 8W was introduced in the 1A and AFAIK none of the 1Ds were produced without water injection.

[Nealius]

The W on the engine designation is for water-injection. If our Corsair has water injection then it should be the W variant.

[Saxman]

55 minutes ago, Nealius said:

The W on the engine designation is for water-injection. If our Corsair has water injection then it should be the W variant.

I think that's part of the problem. Injection doesn't seem to be working (it also shouldn't be a separate key map, but should be automatic when the throttle is pushed to full).

[Padonis]

I have the same thing unfortunately, speed 250 in all combinations and that's it. Unless I'm diving down...

[EnzoF98]

5 hours ago, Saxman said:

it also shouldn't be a separate key map

This is still fine as an option to have though, for us who don't have tactile detents in our throttles.

[irisono]

With a clean configuration and closed coolers, I've tried all possible combinations (auto lean, auto rich, supercharger high, low, neutral, various RMP settings). I barely get above 250 kts at 5000 ft. Not at all the 295-300 kts as claimed by another user. I haven't been able to get water injection to work. I suspect this latter feature hasn't been implemented yet. Technical literature shows higher performance figures for the F4U-1D. I hope these shortcomings will be corrected in the next update.

[hind75]

 

you must control rpm gorvener by mouse for for full power, not axis or keyboard max rpm 2700 to 3500 / max manifolder gauge 54 to 75 (WEP)

Edited 9 hours ago by hind75

[Kovacs]

1 hour ago, irisono said:

With a clean configuration and closed coolers, I've tried all possible combinations (auto lean, auto rich, supercharger high, low, neutral, various RMP settings). I barely get above 250 kts at 5000 ft. Not at all the 295-300 kts as claimed by another user. I haven't been able to get water injection to work. I suspect this latter feature hasn't been implemented yet. Technical literature shows higher performance figures for the F4U-1D. I hope these shortcomings will be corrected in the next update.

Same thing for me

[felixx75]

2 hours ago, hind75 said:

 

you must control rpm gorvener by mouse for for full power, not axis or keyboard max rpm 2700 to 3500 / max manifolder gauge 54 to 75 (WEP)

TO, Mil. Power and WEP are all specified as 2700 RPM...

Max manifold pressure lies at 57,5 - 59,5 depending on height 

[westr]

8 hours ago, Saxman said:

I think that's part of the problem. Injection doesn't seem to be working (it also shouldn't be a separate key map, but should be automatic when the throttle is pushed to full).

I think you are right in that when I force the throttle further down with the mouse as described on the video on Hind75s post I can see the smoke which I assume is the burning/steaming water, on external views.

 

Its a shame no keybinds seem to work as a workaround for the time being, hopefully a hotfix will address it.

Edited 8 hours ago by westr

[Hayrake YE-ZB]

3 hours ago, hind75 said:

you must control rpm gorvener by mouse for for full power, not axis or keyboard max rpm 2700 to 3500 / max manifolder gauge 54 to 75 (WEP)

 

If your prop governor axis isn’t allowing 2700 rpm, then try changing the axis profile to “linear” under the tuning menu. Worked for me, and I’m seeing 305 knots indicated at seal level at military power.

[Nealius]

16 minutes ago, Hayrake YE-ZB said:

Worked for me, and I’m seeing 305 knots indicated at seal level at military power.

What's the weather in your mission like, and how do you have your cowl flaps/oil cooler/intercoolers, and supercharger set? Trying a typical 29C Marianas day 29.92 I'm stuck at a 210knt wall for some reason.

Edited 7 hours ago by Nealius

[Hayrake YE-ZB]

11 minutes ago, Nealius said:

What's the weather in your mission like, and how do you have your cowl flaps/oil cooler/intercoolers, and supercharger set? Trying a typical 29C Marianas day 29.92 I'm stuck at a 210knt wall for some reason.

I’m away from the computer, but even a 10C OAT difference shouldn’t result in a 100 knot shortfall. Are you getting 2700 rpm and ~58 inches MP? 

The problem is either too much drag, or too little thrust. I don’t think that cooling flaps would result in what you are seeing for max speed, so unless there is invisible landing gear hanging, it’s got to be a power problem.

[felixx75]

It sounds to me as if many don't keep the ball centered and therefore produce too much drag.

It would be best if those who have problems would supply a *.trk file. Then it would be easier to understand where the problems are.

Edited 7 hours ago by felixx75

[Nealius]

27 minutes ago, Hayrake YE-ZB said:

Are you getting 2700 rpm and ~58 inches MP?

I'm at 2700/53" as that's what is listed as mil power. I haven't pushed higher than that on manifold pressure.

23 minutes ago, felixx75 said:

It sounds to me as if many don't keep the ball centered and therefore produce too much drag.

Ball is centered. 

[Razgriz10]

On 6/21/2025 at 12:15 PM, Templar560 said:

I've been flying with some friends and there seems to be strange power issues going. In a hot start aircraft nd in a cold start we weren't getting more than 170mph. In the instant action free flight the Corsair is doing 260 mph. Nothing we did in multiplayer seemed to help us speed up. Not seen any other mention of this so maybe it's something we've collectively done/not done?

 

 

 

Are you in trim?  Because if you are in a skid then you wiil be very slow.

[Saxman]

7 hours ago, EnzoF98 said:

This is still fine as an option to have though, for us who don't have tactile detents in our throttles.

1. Find the point on your throttle where water injection kicks in.
2. Back throttle off to just a hair below that point.
3. Get yourself a strip of self-adhesive felt or velcro.
4. Apply to throttle.

Voila, instant detent.

[Templar560]

I think we were in trim yeah, tricky though that is.

 

[felixx75]

Here is a picture of how I reach 260kt+ without any problems, with max. cont. (Manifold 44, 2550rpm, Blower: neutral)

All coolers closed.
Why others only ever reach low speeds, I don't seem to have these problems. 

Edited 4 hours ago by felixx75