Why was the early French velocipede famously and disparagingly referred to as the boneshaker?

Answer

Because of the poor ride quality on cobbled streets due to rigid wooden frames and iron tires

The nickname boneshaker describes the severe physical discomfort experienced by riders of early velocipedes. These machines featured rigid wooden frames and wheels outfitted with hard iron tires. When traveling over the uneven surfaces of the era, such as cobblestone streets, the lack of any suspension system meant that every vibration and impact was transmitted directly through the frame to the rider. This harsh ride quality made the experience exhausting and jarring, highlighting that while the propulsion problem had been solved, the ergonomics and comfort of cycling were still in their infancy.

Why was the early French velocipede famously and disparagingly referred to as the boneshaker?
inventionHistoryFrancebicycle