Collapsible miniature bicycle with epicyclic drive - has frame in square tube sections held in position by wingnuts and alternator driven from brake disc

摘要

The collapsible miniature bicycle can be packed into a very small space, while giving conventional performance and a normal position for the rider. All the frame sections are of square-section tube, no longer than 350 mm and secured together by wingnuts. An epicyclic gear train can be provided, giving the effect of a road wheel diameter greater than the standard 700 mm, although they are smaller. The bicycle can also be adjustable to different settings, to suit a man, woman or child. Disc brakes can be provided, together with an alternator driven by gear teeth on the disc periphery.