Zybach is a simple and easy to build weight driven wooden gear clock. Its circular forms are reminiscent of crop circles, giving the clock its name. It's named after Frank Zybach, inventor of the center pivot irrigation system, which revolutionized farming in the mid 1900s.


Simple Forms

Zybach is simple and minimal. There are no extraneous or elaborate shapes, only straightforward forms that are required for function.


As an alternative to more gears, this mechanism allows a 12:1 reduction for the hour hand while at the same time giving a unique appearance to the center of the clock.

Graham Escapement

The escapement is a clock's time keeping mechanism, its heartbeat. Zybach uses one of the simplest types of escapements, the Graham. This escapement is reliable, easy to build, and easy to tune.

Easy Setting and Winding

To set Zybach's time, simply turn the minute hand. To wind it, lift the weight and gently pull on the wind cord. The pulley spins, magnetic ratchets engage, and Zybach will run all day and all night, up to 30 hours.

Run Time
30 hours

Woodworking Plans
45 pages 8.5" x 11"
2 pages 11" x 17"
47 pages total

DXF files for all plywood parts

Free Downloads



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