抄録
In this research, the dynamic characteristics of bicycles are investigated focusing on small wheels. Multibody dynamics is used for the formulation of the bicycle model. The effects of the parameters of tire diameter and head angle are examined by focusing on a small wheel bicycle. The straight-ahead stability and upstanding stability are evaluated at each parameter. The results show the tendency of stability at each parameter and the influential parameter to the small wheel bicycle is found. The driving experiment using the small wheel bicycles with variable head angle is evaluated by the subjects. It is confirmed that varying head angle increases the stability of the small wheel bicycle. The results are corresponding with the simulation results and it is shown that the simulation captures the tendency of the stability and expresses the characteristic of the small wheel bicycle. Furthermore, the simulation using the effective parameters for small wheel bicycle was shown at the end. It showed the possibility of increase of the stability of a small wheel bicycle.
