Down on Rando Alley here at NAHBS is an entire lane dedicated to the randonee constructeur. Right there, next to J P Weigle is Chapman Cycles, the Rhode Island-based builder with a knack for creating both highly elegant, yet functional machines and exceptional drillium. Brian Chapman went the distance on this machine, drilling just about everything he could, down to the SRAM Red shifter paddle, yet the detail that really piqued my interest is the rim generator device, that’s able to be switched on via the non-drive side downtube shifter…