Mechanisms — Variable Speed Ratio

Recent Blogs

Haven’s Planetary Crank Gear — schematic of the mechanism.
Haven’s Planetary Crank Gear: Slotted-Cross Animation and Calculator

Posted by Robbie Dickson on

Explore Haven’s bicycle crank with equal external gears and a rocking slotted cross. Calculate output speed, instantaneous ratio and sliding-block position.
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Cam Sectors diagram
Cam Sectors Mechanism Explained: How It Works, Diagram, Parts, Applications and Formula

Posted by Robbie Dickson on

Explore paired logarithmic-spiral cam sectors, their changing contact radii and opposite rotations. Calculate the instantaneous speed ratio over a selected swing.
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