Tweaking Force Feedback effects
Another great tip from one of the unsung heroes of the sim world, Essel from combatsim

The stick shake setup for the ground roll on all CFS2 airplanes is, well, quite excessive... It annoyed me a lot. I know I can hold the stick from the sides to disable forces, and thus the shaking, but that's not really the point. I actually taped over the sensor at the front of the handle so that the forces are always on. Anyway, here's the fix for FF sticks: just add these lines in all "aircraft.cfg" files:

[forcefeedback]
ground_bumps_magnitude1=3800
ground_bumps_angle1=8900
ground_bumps_intercept1=5.0
ground_bumps_slope1=0.48
ground_bumps_magnitude2=1550
ground_bumps_angle2=9100
ground_bumps_intercept2=0.075
ground_bumps_slope2=1.0
crash_magnitude1=1000
crash_direction1=01000
crash_magnitude2=1000
crash_direction2=9000
crash_period2=75000
crash_duration2=2500000

The amount of shaking is controlled by the "magnitude" variable, from 0 to 10000. Adjust to suit your taste... I also toned down the crash shaking quite a bit...

Molte grazie Essel!