Frame SummaryA bike frame is the main component of a bicycle, onto which
wheels and other components are fitted. The modern and most common frame design for an upright bicycle is the diamond frame. The diamond frame is made of two triangles: a main triangle and a paired rear triangle.
The main triangle consists of the head tube, top tube, down tube and seat tube. The rear triangle consists of the seat tube, and paired chain stays and
seat stays. The head tube contains the
headset, which interfaces with the fork. The top tube connects the head tube to the seat tube at the top, and the down tube connects the head tube to the
bottom bracket shell.
The rear triangle connects to the rear
dropouts, where the rear
wheel is attached. It consists of the seat tube and paired chain stays and
seat stays. The chain stays run parallel to the chain, connecting the
bottom bracket to the rear
dropouts. The
seat stays connect the top of the seat tube to the rear
dropouts.Full Article
