make sure that your aircraft.cfg file's contact points allows for gear extension/retraction times!

This is taken from the Mooney Bravo's aircraft.cfg file

       //0  Class
       //1  Longitudinal Position        (feet)
       //2  Lateral Position             (feet)
       //3  Vertical Position            (feet)
       //4  Impact Damage Threshold      (Feet Per Minute)
       //5  Brake Map                   (0=None, 1=Left, 2=Right)
       //6  Wheel Radius                (feet)
       //7  Steer Angle                         (degrees)
       //8  Static Compression           (feet)  (0 if rigid)
       //9  Max/Static Compression Ratio
       //10 Damping Ratio               (0=Undamped, 1=Critically Damped)
       //11 Extension Time              (seconds)
       //12 Retraction Time             (seconds)
       //13 Sound Type
      
[contact_points]
point.0=1,   1.18,   0.0, -4.20, 1181.1, 0, 0.523, 33.66, 0.296, 2.5, 0.794, 3.5, 3.5, 0, 165.0, 165.0
point.1=1,  -5.48,  -4.5, -3.93, 1574.8, 1, 0.523,  0.00, 0.286, 2.5, 0.808, 4.7, 4.7, 2, 165.0, 165.0
point.2=1,  -5.48,   4.5, -3.93, 1574.8, 2, 0.523,  0.00, 0.286, 2.5, 0.808, 5.2, 5.2, 3, 165.0, 165.0
point.3=2,  -3.90, -18.0, -0.67, 1574.8, 0, 0.000,  0.00, 0.000, 0.0, 0.000, 0.0, 0.0, 5, 0.0, 0.0
point.4=2,  -3.90   18.0, -0.67, 1574.8, 0, 0.000,  0.00, 0.000, 0.0, 0.000, 0.0, 0.0, 6, 0.0, 0.0
point.5=2, -20.23,   0.0,  0.83, 1574.8, 0, 0.000,  0.00, 0.000, 0.0, 0.000, 0.0, 0.0, 9, 0.0, 0.0
point.6=2,  -1.48,   0.0, -2.17, 1574.8, 0, 0.000,  0.00, 0.000, 0.0, 0.000, 0.0, 0.0, 4, 0.0, 0.0
point.7=2, -20.23,   0.0,  6.83, 1574.8, 0, 0.000,  0.00, 0.000, 0.0, 0.000, 0.0, 0.0, 7, 0.0, 0.0
point.8=2,  -4.90,   0.0, -1.83, 1574.8, 0, 0.000,  0.00, 0.000, 0.0, 0.000, 0.0, 0.0, 8, 0.0, 0.0


If you have "0.0"  in the 11th and 12th positions, flightsim assumes you have fixed gear.

another question how do you find the contact points?
I am new to this so i grabbed another aircraft's .cfg and modified it just to see if the design i made worked on Fs 2004