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  • Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.

    Post 16 Update

    Post 17 Warning

Flight Réplicas Douglas Dc-4 and B-24 free Released

Here's just a suggestion, you might be seeing the edge of an interior polygon sticking through the exterior. One that is not UV mapped. If so, it's a modeling issue and not a paintable fix. Is there a partition, or object in that location of the interior?
 
Fnerg said:
Here's just a suggestion, you might be seeing the edge of an interior polygon sticking through the exterior. One that is not UV mapped. If so, it's a modeling issue and not a paintable fix. Is there a partition, or object in that location of the interior?
Click to expand...
If that is the case , shouldn't we all be seeing that ?
 
Spook48 said:
If that is the case , shouldn't we all be seeing that ?
Click to expand...
Yes. Perhaps the poly extrudes on the model, and is made invisible by the alpha channel of that texture, but in this livery case, that texture has no alpha? Is it visible with just this livery?
The reason I'm thinking polygon is because of the draw call order conflict which is why you also see it through the wing, it seems in a fixed position from different angles.
 
I really don’t think it’s the model, I’ve got the original 3D model and can’t see anything like that. It does indeed look like something overlaid on screen - I think it would be an interesting test to try without the control overlay in external camera.
 
Well , i don,t see it at my end. I just tested it.
Btw , i like what you did with the switch functionality , Flak.
Those upgrades make this plane much more enjoyable imho.
 
SeeRyFly said:
I swear we went through this before, but maybe it was a different plane? Brian is the only one who sees that line and it is clearly tied to an overlay of some sorts. It's nothing with the aircraft.
Click to expand...
Some logic, the line is visible in external view only, right? It shows with different liveries and on completely different views/angles of the B-24. The only common aspect is the use of the overlayed instruments (HUD) in external view. I would say it is in the overlay. Test external view with the HUD disabled.
 
Glad we can figure it out. Sounds like an overlay artifact. Would a GPU driver update fix that?
 
Did the double whammy and updated my drivers and (after looking it up) turning off the hud. Line is gone now. Strange that the Liberator was the only one that showed that line...
 
CHT temperatures:

I found the CHT temperatures too low during take-off and climb. With a bit of tweaking the temeratures will now go into overheating when not managing the cowl flaps properly. During cruise a nice 220-230 can be obtained.

cht_tuning_constant = 1.3
cht_cooling_constant = 0.75
cht_heating_constant = 950
cht_tc = 0.015
cht_liquid_max_cooling = 280
 
ftl818 said:
CHT temperatures:

I found the CHT temperatures too low during take-off and climb. With a bit of tweaking the temeratures will now go into overheating when not managing the cowl flaps properly. During cruise a nice 220-230 can be obtained.

cht_tuning_constant = 1.3
cht_cooling_constant = 0.75
cht_heating_constant = 950
cht_tc = 0.015
cht_liquid_max_cooling = 280
Click to expand...
Thank you! That was on my to-do list to investigate. I’ll add that into V19 code.
 
Is there a sound update/alt. for this Plane , it´s good inside but outside is that "awful wooshing repeats" FSX has better sound alternatives (strange ) ?
 
Going through a few final tests at EGDM before V19 is released! Lots of good stuff coming in that version - I pasted the draft changelog below too.Screenshot 2025-12-19 195704.png

V19 Draft Changelog
  • Implemented more realistic fuel mixture detent behaviour for auto-lean, auto-rich, and emergency full.
  • First pass at performance and fuel consumption tuning as per B24 Flight Manual "Cruising Control Chart" - not an exact match but closer than before. Further refinement to be done after Supercharger code is implemented in a future version.
  • Opening cowl flaps will increase drag. As per the B24 Flight Manual this can result in a speed reduction of "eight-tenths of a mile per hour at cruising speed for each degree of cowl flap opening". Note guidance for take-off is max 30% open.
  • Updated engine cooling parameters, proper usage of cowl flaps is required to manage temperatures (thanks to ftl818)
  • Reworked startup logic for better realism
  • Propeller animations (internal model)
  • Propeller animations (external model)
  • External sounds improvement
  • Minor tweaks to startup and low RPM sound volume curves
  • Added startup smoke
  • Sequenced CTRL+E auto-start to follow the real procedure
  • Slightly reduce yoke vibration
  • Basic shutdown prop animations to prevent sudden stop
  • Updated .FLT files for new logic
  • Engine status in EFB: Prime / Starter / Magneto / Combustion
  • Improved fuel system logic (thanks to jjbz)
Several of the above changes were made possible thanks to lmenes who kindly allowed for reuse / adaptation of code and logic from the excellent DUCKWORKS DC-3 mod. None of this was a simple copy-paste but reusing the same approach was a massive help.

If anyone feels they can contribute to this community-driven project then please do offer to help. One huge task is completely redoing the UV maps in the cockpit model, and then overhauling the textures using modern PBR materials. If this sounds like something in your skillset then let me or SeeRyFly know!
 
Last edited:
Great! Another thing which might be nice is contrails at high altitude. I remember my grandfather telling my about the bombers with contrails passing over the Netherlands on their way to Germany.
 
You have a lot of contrails effects freeware, just write sone XML code to display them at the good altitude and with the good meteo conditions: it's easy to do.
 
Even better, tie them to a light (which is flipped automatically via xml) so they show in multiplayer. Very easy
 
Very easy if you have done it before. Not so if you have no clue where to start and have to seen any examples. Is it done in the systems.cfg?
 
OK after quite a bit of bug-bashing and tweaking, v19.0.8 is finally available! You can get it here:

B-24 Liberator Repack (Flight Replicas FSX-Native Conversion) for Microsoft Flight Simulator | MSFS

✓ B-24 Liberator Repack (Flight Replicas FSX-Native Conversion) is a Microsoft Flight Simulator 2020 mod created by Flight Replicas. This add-on features an improved repackage of the Flight Replicas B-24 Liberator, adapted for use in both MSFS 2020 and MSFS 2024. The standalone aircraft does...
flightsim.to flightsim.to
 
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