My steam punk clock. Fully functional, kept real time. Clock face is a go-cart sprocket with exactly 60 teeth.
Close up. Mostly off-the-shelf parts. The pointer was machined from hex bar stock.
Close up of tensioner.
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Steam Punk Clock
Most steam punk art objects are mostly decoration which is, of course, fine. This is a fully functional clock.
To read the clock, the number that is either straight up or CCW from straight up is the hour. The minutes are indicated by the pointer. In case you're wondering, the clock is showing 6:45.
The trick here was getting the minute hand to rotate at the correct angular speed. Since the clock face itself is turning, the minute hand had to take that into account and spin at a slower-than-normal rate because the clock face is spinning beneath it.
