The system is for studying the acceleration of a gear system under different gear ratios.

The system consists four parallel shafts with fix and sliding gear and supported by ball bearings on a base frame. Shafts 1, 2 and 3 have two fixed gears. Shafts 2, 3 and 4 have two sliding gears. Each pair of adjacent shafts has two transmission ratios, providing 8 different gear ratios between the first and the last shaft. Inertia mass with torque drum is attached to each shaft. A cord wound around a drum and the weight hanger provides a means of applying a torque. The gear system is attached to a wall supported on two legs for weight hanger travel. By timing the fall of the weight hanger, the acceleration of the system can be calculated. A sprocket and lock pin, and a winding handle are provided for raising the weights. All gears are enclosed in a casing with a transparent cover for safety.

Instruction manual is also included.

  • Inertia of a mass and of a geared system.
  • Efficiency of a geared system.
Shafts 4 ea.
Inertia masses 4 ea.
Gear Spur gear.
Maximum gear ratio 64:1
Cord with measuring tape 1 set
Stop watch 1 ea.
Weight hanger 1 ea.
Weights 1 lot
Accessories Rubber pad


Net (unassembled) Shipping Dimensions WxLxH 80 x 30 x 110 cm.
Net Weight Approx. 65 kg.