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          There are computer programs that you can use to experiment with mechanisms.
        
        
          One example is
        
        
          
            Yenka
          
        
        
          , which simulates mechanical and electrical components
        
        
          in three dimensions. You can use it to visualize the properties and movements of
        
        
          various mechanisms.
        
        
          Yenka includes a library of virtual components, which you find in the main menu of
        
        
          the program.
        
        
          From this library, you can choose input, output and transformation components, as
        
        
          well as presentation options for your project. You can add and modify components as
        
        
          follows:
        
        
          
            a) Designing a mechanism
          
        
        
          1.
        
        
          Select the plan view and drag components from the library to the workspace.
        
        
          2.
        
        
          You can use the cursor to move components horizontally. You can move
        
        
          them vertically by changing to the side view or front view.
        
        
          3.
        
        
          Double-click on components to modify their characteristics. For example, you
        
        
          can change the speed of a motor or the number of teeth on a gear.
        
        
          4.
        
        
          When all the mechanisms are in position, you can join them with axes. Click
        
        
          on the black box at the top of a component and drag it to the black box on
        
        
          another component. If they are connected properly, they will move.
        
        
          Start with the motor and the input mechanism. Then add more components.
        
        
          As you work, experiment with different sizes and positions and check your
        
        
          progress.
        
        
          A virtual demonstration of a mechanism
        
        
          MECHANISM SIMULATOR
        
        
          
            With this programme, you can look
          
        
        
          
            at your project from all sides and
          
        
        
          
            rotate the perspective to whatever
          
        
        
          
            angle you prefer. Start with the plan
          
        
        
          
            view, then raised and profile views
          
        
        
          
            to situate the parts. Then activate the
          
        
        
          
            animated perspective view.
          
        
        
          
            Side view of a motor and wormdrive
          
        
        
          
            Plan view of the axes
          
        
        
          VIEW OPTIONS
        
        
          ADVANCE EDITION