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The tandem's front wheel was built around a Stan's Crest alloy rim. Dori and Andrew Coetzee's Ritchey Double Switchback Break Away Tandem. © Z. Schuster

The tandem’s front wheel was built around a Stan’s Crest alloy rim. Dori and Andrew Coetzee’s Ritchey Double Switchback Break Away Tandem. © Z. Schuster