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Problem with FS2004 (FS9)


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Hi all,

I wonder if you can help me.

I run FS9 and I (nearly always) fly the PMDG Boeing 737-700.

I have a registered copy of FSUIPC running on my computer and I have the Axis Assignments directly controlling the movements of the aircraft.

I have revently purchased a new joystick (Thrustmaster Hotas X) and at first everything was tickety boo. Today I have come to do a simflight and I powered on the runway and I got to about 20kts and the aeroplane started veering to the left. The more power, the bigger the veer.

I have FSUIPC controlling all the movements directly and I have deleted all of the axis assignments from FS9 and just can not work out why it is doing this.

I looked at the joystick calibration and everything seems in order as in the rudder numbers stay idle when the throttle goes up and down.

A friend of mine talked me through some troubleshooting to no avail and I really am at a bit of a loose end.

Any help is gratefully appreciated.

Many thanks in advance.

Graeme.

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have revently purchased a new joystick (Thrustmaster Hotas X) and at first everything was tickety boo. Today I have come to do a simflight and I powered on the runway and I got to about 20kts and the aeroplane started veering to the left. The more power, the bigger the veer.

A power-dependent turning tendency is almost always due to over-high "realism" settings causing torque or propwash effects to hit the tailplane, though that certainly shouldn't happen with a 737. I would guess more at an engine thrust mis-balance.

I have FSUIPC controlling all the movements directly and I have deleted all of the axis assignments from FS9 and just can not work out why it is doing this.

Did you delete the old assignments? Possibly a disconnected old assignment still has a driver feeding in bad values. Try using FSUIPC's axis logging to see if spurious incorrect values are occurring. Mind you, nothing to do with axis assignments (except throttles perhaps) should really make veering power dependent.

In a strange twist, I was at the 22 end at STN and the plane veered left.

Tried at the 04 end (for a change of scenery) and it now veers to the right!

That's more suggestive of a strong crosswind, needing opposite aileron and a little rudder correction.

For the axis assgnments, please check, or show me, the entries in your FSUIPC INI file. I'd need to see the Joy letter section and the axes sections. For all else I think you need to check elsewhere, but do try using the logging.

Regards

Pete

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