Excerpt:
"Joe Myers rides a unicycle with a 36” wheel, which used to be the gold standard for long-distance riding. However in recent years it has become possible to buy geared unicycles. Building gears for a unicycle is tricky because you need to be able to pedal forwards and backwards, and there can be very little looseness in the drive-train when you switch from forwards to backwards. However these challenges have been overcome and it is possible to buy a hub with internal gearing that can switch from 1:1 to 1.5:1 mode with a click of the rider’s heel. This means that long-distance riders can choose between a 36” wheel with no gearing, a 29” wheel with a geared hub (in high gear this is equivalent to a 43.5” wheel), or a 36” wheel with a geared hub (in high gear this is equivalent to a 54” wheel). Some riders use ungeared 29” wheels, but it is very difficult to maintain a competitive speed because even a cadence (pedal revolutions per minute) of over 100 will only propel you at 14 km/h."

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