Browse Publications Technical Papers 550267
1955-01-01

Tractor Seat Suspensions for Easy Riding 550267

THIS paper describes an investigation into the best design of seat suspension for tractors having pneumatic tires with a rigid rear axle.
Test results show that some of the factors entering into a good tractor supension include:
  1. 1.
    A ratio between the natural frequency of the seat and the natural frequency of the tires of about 0.4 to 0.5.
  2. 2.
    A supplementary seat deflection 1½ times the static seat deflection to avoid bottoming.
  3. 3.
    Use of suspensions having nonlinear characteristics in order to hold seat deflection within practical limits.
  4. 4.
    Adjustable seat-spring action to compensate for the varying weights of drivers.

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