Double the fat: 616 Bicycle Fabrication tandem [16incheswestofpeoria]

You’re likely to see just about any kind of machine at the Midwest Tandem Rally, held this year in Middleton, Wisconsin, next door to Madison. Old, new, steel, aluminum, titanium, and carbon fiber frames. Tandems, triplets, quads, quints. Upright bikes with two wheels, recumbents with two or three.