Converting Circular Motion to Pendulum Motion: The Simple Crank-Slider Assembly

AI Thread Summary
To convert circular motion from a motor to pendulum motion, a simple crank-slider assembly is recommended for its ease of construction. The discussion highlights the potential of using an escapement mechanism, which has various designs available. An innovative idea involves using magnetic toys or electromagnets to create a self-sustaining magnetic pendulum. The crank-slider assembly allows for adjustments in speed and angle by modifying the lengths of the components. This approach provides a practical solution for building an upside-down pendulum.
chris2547
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Hi I want to build an upsidedown pendulum. My problem is what is the best/most used way of converting a circular motion (from the motor) to a pendulum motion.

Thanks
 
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Look up 'escapement' there have been lots of different ones invented over the years.
 
It may be a little easier to build a simple crank-slider assembly, shown here:
http://en.wikipedia.org/wiki/File:Slidercrank_animation.gif

All you then need to do is connect the slider to another joint, which has a fixed pivot point. Then adjust your lengths to get the speed/angle sweep that you desire.
 
Thanks the 'simple crank-slider assembly' was exactly what I was thinking of.
 
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