Bicycle frame has tubular side-frame linking front fork outer tube with rear frame attachment to rear wheel fork

摘要

A bicycle has a frame (1) linking the front fork and rear fork (6). In addition the bicycle has a frame side-extension (12) connected to the front fork tube (2) and reaching around the rider to join the rear frame saddle support tube (13). The side-extension is a tube (12) of any convenient cross-sectional shape.