The Planetary Gear Bicycle is a bit old-fashioned Penny-Farthing bicycle with pedals that move the gears which in turn move the wheel, which itself is fashioned like a gear. The seat, suspension spring, in fact, every part of the bicycle is made from a single piece. Too bad it isn’t big enough to ride.
From Make:
# It was built, layer-by-layer, using laser sintering rapid prototyping. It’s a demonstration project by Italian firm CRP Technology to demonstrate their capabilities.# It’s made out of WindForm XT, a carbon-fiber reinforced polyimide material that’s usually used to craft high-performance motorsport racing parts.
# It incorporates a planetary gearing system. Penny-Farthings have large front wheels so that they can travel further on one pedal stroke; by using this gearing, the front wheel can be a more-comfortable 20% smaller. Planetary gears are used in some 3-speed bicycles, but their beauty is hidden within the rear hub.
