ES14 - Experiment


Demonstrates how the scotch yoke, crank and slider and quick return mechanisms convert motion.

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This kit includes three popular mechanisms for experiments in conversion of motion from linear to rotary or rotary to linear. These include the Scotch Yoke (sometimes called ‘donkey crosshead’ or ‘slotted link’), the Crank and Slider, and the Quick Return mechanisms. Students test each mechanism to see how it works and note the differences in the way that each mechanism converts the motion.

The three mechanisms are the same as those used in real applications, such as combustion engines, power assisted valves or fluid pumping systems. Each has a unique way of converting motion, shown by the experiments.

The kit introduces students to key engineering terms such as reciprocating motion, rotary to linear motion and linear to rotary motion.

This versatile kit is part of a series that allows many experiments using different arrangements of their parts. Students, teachers or lecturers fit the parts of the kit to the Work Panel (ES1) (supplied separately) to study or show an engineering science topic.

The Work Panel (ES1) includes all the worksheets, guidance notes and lecturer notes (with answers) needed for typical experiments with each kit. The selection of parts in the kits and the choice of fixing points on the work panel means that teachers or lecturers may extend the experiments to an even greater range.

View the engineering science experiment flyer here.

Learning outcomes

  • Conversion of motion using the ‘Scotch yoke’ (or ‘slotted link’)
  • Conversion of motion using the Quick Return mechanism
  • Conversion of motion using the Crank and Slider

For this kit we currently have worksheets available for:

Simple Mechanisms (ES14):

  • Crank and Slider

Find out more here

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Essential Base Units
Recommended Ancillaries


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