Aircraft making a very slight roll to the right.

[dharris]

Good day, have been away from simming for awhile, personal stuff. At any rate, all aircraft have a tendency to make a slight roll to the right. Easily controlled with joystick input, but constant. Can not find a setting that would control this. Tried multiple joysticks, usb type, and several a/c and airports. On some flights on takeoff, a/c will start the roll before V1 is reached. Using FSX Gold with acceleration installed. Hardware drivers all updated, FSX on separate Raptor drive, addon scenery on different drive. Using Win7 64 bit, no virus's or malware found. Drives have all been defraged with O&O. Thank you for your interest.

[mallcott]

Good day, have been away from simming for awhile, personal stuff. At any rate, all aircraft have a tendency to make a slight roll to the right. Easily controlled with joystick input, but constant. Can not find a setting that would control this. Tried multiple joysticks, usb type, and several a/c and airports. On some flights on takeoff, a/c will start the roll before V1 is reached. Using FSX Gold with acceleration installed. Hardware drivers all updated, FSX on separate Raptor drive, addon scenery on different drive. Using Win7 64 bit, no virus's or malware found. Drives have all been defraged with O&O. Thank you for your interest.

 

Trim.

 

FSX exacerbates out of trim effects.

 

Use a little rudder trim to take the edge off, or set the off-centre weight to equal (could be fuel or pax). Of course, aileron trim is preferable, but not all aircraft have this...

[keefpee]

Engine torque reaction is the prime cause, if the aircraft is swinging to the right then you have an anti-clockwise (when viewed from the rear), You should get the reverse effect if prop goes the other way.

The other cause can be due to fuel burn, FSX & FS9 are very sensitive to lateral C of G differences.

So: to stop engine torque effect you need to change in the Aircraft.cfg file in the [flight_tuning] section

p_factor_on_yaw=1 to =0 (zero)

 

 

In the [fuel] section

look at the figures for each listed tank; the first digit(s) is the fore/aft location, the second digit(s) are the lateral position, & the third is the vertical position; so change the second digit(s) to zero to put the tank on the centreline.

 

On my Percival Q6 I found that effect when I had lopsided passenger entries!!!!

 

One final thought is that your aircraft might have aileron &/or rudder trim which of course you may adjust.

 

Hope this helps you a bit

Keith

[lnuss]

That "torque" effect usually is during takeoff and climb, and should go away in cruise -- it's generally yaw, too, not roll. And it doesn't happen at all in jets.

 

However a fuel imbalance can cause the described effect, and on aircraft that have it, aileron trim can help counteract it. But going into the fuel menus lets you set equal amounts of fuel on both sides without needing to relocate the tank(s). Once you have it cured, then resave your default flight, so that it doesn't show up next time.

[dharris]

Thank you for your replies. This "roll" happens with all the aircraft, that is what is so odd. If it was just one of two then I see one of these things being off. I have never gone into the air files at all, nor tried to change any parameters on any of the aircraft. It just started doing this awhile back when my wife was ill, and I did not persue it at that time. Now that she has passed I have a lot of time on my hands and realized I still enjoyed this very much. I certainly don't want to try to re-install everything. I have back-ups and image files I can try. I recently built a computer for a friend and he bought the gold copy of fsx and it installed and works fine, so perhaps there is something that has gone wry with my install. Since this seems to be a global problem I think (like I know everything right?!) I will keep mucking about until I gave to say uncle and try a restore. Thanks again for your suggestions, Don

[tiger1962]

This "roll" happens with all the aircraft

 

Help us to help you, Don - please tell us which aircraft.

Check your control assignments, it could be that your throttle control is mapped to engine 1 only, instead of all engines.

[lnuss]

This "roll" happens with all the aircraft, that is what is so odd.

This is why I suggested you check fuel imbalance, since an imbalance in the default aircraft (the one that loads when you start the sim) will pass that on to any others you load. However, it could be the ailerons sticking on your stick/yoke (or mis-calibration), even a slight offset from your rudder pedals.

[mikeandpatty]

You might look at recalibrating your controller (Menu\Options\Settings\Controls\Calibration (Tab)\calibrate (button). If your null zone for ailerons is very small (or even rudder), you may unconscientiously bias input with what you think is no input with your hand. That is exactly why there is free play in the first place (same as a steering wheel in a car - their is a neutral zone to allow resting your hand on the wheel without annoying small inputs)

[dharris]

Thank you for all of your suggestions, the problem was the fuel load was unequal. I have never gone in and set the loads, but in one of my flights with a multi-engine prop, I must have inadvertanly hit a fuel selector to tank one, and flew that way, then at some point saved the flight and the rest was programming! It did it with props or jets old or new. Tried flying a couple of stock missions and those aircraft did not have the roll problem, so I went back in and checked the fuel after a member mentioned that, and sure enough it was way out of balance. So made a small flight with fuel corrected, saved the flight, and now all aircraft start out in balance. Can not thank you enough. Saved me a world of hurt if I would have had to restore or re-install! Great work members!