Simviation Forums

Is there a way to edit how fast an airplane can go? I tried changing reference speeds in the .air folder but it didn't seem to do much. Any help would be great.

You can also edit the aircraft cfg file.
Between the .air file & the aircraft .cfg file is where all of your speed referances come from. But be aware that changing referance speeds could also cause stress damage unless that is also changed to reflect the new numbers.
There are several entries you would have to change but it is possable. Do not forget about the thrust scaller entry. I am not sure what all of the entries are you wolud have to change but if you forget one it could cause adverse effects in the way the plane handles.
JUST MAKE SURE YOU SAVE THE ORIGNAL before you make any change just in case.

I believe the speed of any given aircraft model is determined by the designer/builder, and from what I've seen, is probably a real world figure.  However, Microsoft has provided for easy mods, and somewhere on the MS site there, maybe even this one, is a write-up on many aspects of what does what as regards the .cfg file. For now:

In the aircraft.cfg file:

[flight_tuning]
parasite_drag_scalar = 1.0:  A lower value increases speed, a higher value decreases speed.

[jet_engine]
thrust_scalar = 1.0: A higher value increases speed, lower value decreases speed.

1.0 is the standard entry on these lines.  Watch your decimal places.  For ex., 0.8 is lower than 1.0.  You do not have to modify both.  If an aircraft does not have these lines, then it is defaulting to 1.0 values.  You can add these lines if necessary.

I have not noticed any adverse effects on any aircraft with these modifications. It is, of course, more difficult to fly at higher speeds, but you can always change the mods back.  Don't forget the "=" sign.