Why is it when i am rolling down the runway the plane always wants to slowly drift left sometimes right without any rudder input. You dont need to suggest calibrating or anything. Everything I can think of has bben done. I tried different dead zones, etc . There is not rudder input being fed into the controls. Should be straight as an arrow.

If you're talking about a single engine prop, then P-factor, torque, and gyroscopic precession are all factors that will pull you to the left. A little right rudder on takeoff roll and in a climb is almost always needed in FS9 and the real world. The pull to the right could be a left crosswind that isn't modelled well on the ground in FS9. Verify the wind direction/speed and you may need to use a little left aileron on takeoff to compensate.

The only `cause` for a left-turning tendency is the absence of a right-turning steering correction! You REALLY should try flying a real aircraft! Trim, rudder or steering wheel, whatever it takes, it's the pilots responsibiilty to track the centreline, not the aircraft.Allcott

>The only `cause` for a left-turning tendency is the absence>of a right-turning steering correction! >You REALLY should try flying a real aircraft! Trim, rudder or>steering wheel, whatever it takes, it's the pilots>responsibiilty to track the centreline, not the aircraft.>>>AllcottHi Allcott,I think you're saying the same thing I'm saying. Nose wheel/Rudder and aileron corrections are needed based on what the plane or the wind is doing. As for trying to fly a real aircraft, I think you're presuming a little, since I'm a PPASEL/instrument and have many hours in the real thing. I was just trying to explain the basics reasons to someone who obviously didn't have our knowledge, and thus was asking the question. -Neil

With some late WWII piston-engined fighters the take-off technique was to position the aircraft on the right-hand side of the runway, apply full right rudder then hope to get airborne before running off the left-hand side of the runway. Initially once airborne, aircraft went sideways even faster until it gained enough speed for the rudder to be fully effective.Think yourself lucky you only "slowly drift left". :)

I use FS2002, but have noticed the same thing, mostly on landings, even on multi-engined jets which shouldn't be bothered by torque factors. I played around with some things in the aircraft.cfg and got some response, but I don't really know why. You may want to try this and see what you get.In the 'weight and balance' section, you should find this parameter:empty_weight_CG_position = 2.000, 0, 0;empty_weight_CG_position = 3.332, 0, 0The first entry is what I changed it to, the second is the original entry commented out so I'll know where I started from.It went from a noticeable 'left' pull to a slight left pull with thrust reversers 'on', then to a slight right pull after thrust reversers were turned 'off'. I haven't played with it enough to get zero pull, and maybe it won't, but it's something to go on.All the best,Bob

so you are telling me a 5 kt wind will push a 400,000 lb airplane to the left that easily? doubt it

I don't think anybody said anything like that. First, you still haven't said what kind of aircraft you were using when you discovered your left turning tendencies. I'll assume it was a prop driven aircraft. As stated in an earlier post, there are a few left turning tendencies of a propeller driver aircraft, four to be exact, these are; torque, gyroscopic procession, asymmetrical thrust, and spiraling slipstream. And while asymmetrical thrust won't be a factor on the ground, the other three will cause the aircraft to yaw or bank to the left. Also as a side-note torque will cause the aircraft to bank to the left only if the engine spins the propeller clockwise. Hope this helps.Jeff

The ground steering in FS has always sucked. It feels like you are on a sheet of ice above about 10 kts.For me, it always pulls to the left, no matter what the winds are or how I've calibrated it, or what aircraft is. Unfortunately, it's very difficult to apply just the right amount of right rudder to keep the aircraft on the center line so the aircraft usually ends up going back and forth from left to right as I apply and release right rudder, very annoying. Hopefully this will be fixed in FS10.Matt

Hey guys. I know all about that pysics of lfying stuff. I have 5000 hrs flying time at my job. I was suing the big jets when this happened. I did test it and it was the winds. Just find it hard to believe that winds of that magnitude can push a 400K pound airplane so easily

Steady winds will push a big jet, but gusts don't tend to bother them. Like a heavy shopping cart, abrupt shoves won't move it, but even the slightest pressure after a while of constant application will get it accelerating. And Multi-engine props, if they are not counter-rotating, will have left-turning tendancies as I recall.----------------------------------------------------------------John MorganReal World: KGEG, UND Aerospace Spokane Satillite, Private ASEL 141.2 hrs, 314 landings, 46 inst. apprs.Virtual: MSFS 2004"There is a feeling about an airport that no other piece of ground can have. No matter what the name of the country on whose land it lies, an airport is a place you can see and touch that leads to a reality that can only be thought and felt." - The Bridge Across Forever: A Love Story by Richard Bach