In the context of the safety bicycle, what new constraints did the chain drive need to satisfy compared to industrial chains?

Answer

It needed to be lightweight, strong enough for rider power bursts, and operate cleanly.

The bicycle application required a balance: the chain had to be light enough not to hinder the rider but strong enough to handle sudden power inputs over thousands of rotations, while also operating quietly and cleanly.

In the context of the safety bicycle, what new constraints did the chain drive need to satisfy compared to industrial chains?
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