The other convertible tandem, in single mode
The coupling point and the detachable seat stays
One of the two Calfee convertibles, in its tandem configuration
Tandem bicycles are great for allowing couples or friends to ride together, but they're not exactly conducive to riding by yourself. While you could just buy a tandem and a solo bike, one couple recently took a different approach – they got California-based Calfee Design to build them a tandem that can be converted into a single.
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