Ben and Jerry at the Gymnasium
cults3d
Ben and Jerry are two fresh faces for this third automaton, young competitive brothers who face off at the Gymnasium. A simple set of cams propels the right arm into a punch, with a wire attached to the forearm that moves it straight to the Punchball. Each brother takes turns hitting the Punchball, with timing controlled by a swivel plate mounted in the center of the camshaft. Construction is straightforward, guided by drawings shown here. The motion is geared down three to one to slow the motions since they seemed all a little quick when driven directly. For more information on this and other projects, visit https://www.3dprinterclocks.com/page26.html
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