So I just installed the most recent version of FAR from spaceport, and I've run into a problem. I'm experiencing a complete absence of atmospheric drag... I began with a clean installation of KSP along with a few mods: B9, KW, MechJeb, Tav's Aerospace, Quantumstruts and also the procedural wings mod. All versions of these mods being 0.20 compatible and installed in the gamedata folder. So after launching my first rocket, and getting to ridiculous speeds I figured something was wrong. According to MechJeb I had 0.0 m/s^2 drag. 0.000 Drag coefficent, and no Dv lost to drag. So I figure one of the mods is responsible, and remove them all from the GameData folder. So now I have all stock parts, after letting Steam redownload the squad folder, and FAR installed. First thing I build is a 1-man capsule attached to the large SRB and I fire it straight up. It broke the sound barrier at 2 kilometers, and got a maximum velocity of about 2.3km/s. I don't think it should be possible to get to an altitude of ~600 kilometers only using 1 SRB, so I think it's save to say that even using pure vanilla, FAR is still not working properly. Now the strange thing is: I do experience decelaration when falling down: up to 25G... When coming down I will accelerate from 0m/s to 2.5km/s and when hitting the thick atmosphere to about 200m/s. I have installed FAR by extracting the FerramAerospaceResearch folder and the modulemanager.dll into my GameData folder. Please note that extracting the contents of the 'Ships' and the 'Source' folder into my KSP route folder have not helped to resolve the problem. EDIT: So after downloading KSP again, and also redownloading FAR from the mediafire mirror I am still experiencing these issues. What I did discover is that attaching parachutes to the rocket seems to activate some sort of drag. It's very little during ascent: about 150m/s loss in total. (Which means my test craft consisting of a 1-man module and the large SRB gets to about 150km. In vanillia it will go to 35-40km max) Descent however seems to happen in a nominal fashion.