When I first got FSX, I started ploughing through the missions from the start, like you do, and when I got to the first mission involving the floatplane I found that during flight it always wants to turn right, and as there's no autopilot in it, I couldn't get it to hold a heading. No other aircraft seem to have the same problem, although I haven't tried them all.
However, I downloaded the VLJ from Just Flight last night and get a similar, if not worse problem from that too; when taxiing it wants to turn right all the time and when taking off I'm fighting like mad to keep it on the runway! As soon I leave the runway, I have to pause the sim so that I can engage the AP to keep the plane under control! (By the way, this is an excellent little jet to fly!)
Is there a problem with my sim setup perhaps? I've tried re-calibrating my joystick many times, but that makes no difference (Saitek ST290 Pro).
Thanks for that reply Capt, I'll give it a go when I get home tonight.
I'm kicking myself so hard at the moment that there are giant welts appearing on my shins - how could I not disconnect my joystick if I thought that might be the problem! It never occurred to me and I work in IT Support! 🙄
I'll report back if an of the KB suggestions help in case anyone else has similar problems.
Look at the rudder. Mabey you have a knob slightly turned to one side.
737, I'll check the rudder again to see if that may be the problem. Thanks for the suggestion.
I've ruled out the Joystick as the problem, as after disconnecting it and rebooting, the problem still existed. I found that the left fuel tank was nearly empty and when I had all tanks level, the problem has drastically improved, although there is now a slight pull to the LEFT on takeoff and when I get up to speed on the runway. That may indicate that the rudder needs 'tuning'.
Now, I just need to sort out the problem with my Wilco Citation X, which crashes every time I try to load the FS Flight Plan 😞
On single prop planes you will get some turn in the direction that the prop is spinning, this is known as the torque effect. You have to counteract it with a little opposite rudder on takeoff. If you dont' like having to fdeal with torque just turn down the realism setting that effects it in FSX
Make sure that the wind is zero, that can have an effect also. Ensure that you are not just noticing normal drift. Aircraft, like cars, won't travel straight without continuous small adjustments(flying). If you take your hand off the controls, it will drift slowly to one side, this is normal. Unless something is wrong with the flight model, there is no "tuning" of the Rudder. Making sure that the rudder trim is centered is all that's required. Rudder trim is normally only needed in jet aircraft for fuel imbalance and operating on one engine. On propeller aircraft, same situations and during prolonged high power climbs as required to keep inclinometer ball centered.