While many bike frames are made with exotic materials these days, Cameron Falconer, of Falconer Cycles, uses good old-fashioned steel. Located in the Bayview district, a stone’s throw away from the original Trouble Coffee company, Cameron is one of a handful of frame builders that calls San Francisco home, not to mention the dude’s quite a fixture in the local cross-country/cyclocross racing scene. Instead of complicated tube shapes, which which have become the norm, Cameron...