Uploaded February 2013 | Updated September 2026, 1 week ago

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In Arnfield escapement, a weighted arm, instead of the pendulum, unlocks the escape wheel, thus isolating the pendulum from variations in unlocking. However, a remaining accuracy problem is the variation in friction at the pivot of the impulse arm which acts on the pendulum.

This Lego model is based on a video posted on YouTube by @horolophile.

Check out various types of Lego escapements:
youtube.com/playlist?list=PLCbYhDNjOviEQ-C7DhFdyYKAKIA2d1159

#legoEscapement #MechanicalOscillator #LegoClockMechanism #PhysicsWithLego
##SimpleHarmonicMotion