Railcar with discharge control system

A method of forming a discharge control system for a railway car having a pair of longitudinal discharge openings disposed along opposite sides of a center sill of the railway car comprising:

• forming a common linkage centered under the center sill of the railway car;
• forming a plurality of secondary linkages operable to rotate between generally parallel to the common linkage to generally perpendicular to the common linkage, with each secondary linkage having a first end rotatably engaged with the common linkage and a second end rotatably engaged with a door assembly pivotally hinged to one side of the center sill of the railway car;
• forming an operating assembly engaged with the common linkage and operable to move the common linkage longitudinally relative to the center sill;
• forming brackets connected with the center sill of the railway car and operable to allow portions of the common linkage to move longitudinally within each bracket relative to a respective distance from the center sill;
• forming the operating assembly with a gearbox coupled to the common linkage and operable to move the common linkage;
• and
• forming the gearbox to receive a motor drive shaft from a detached motor.