| 摘要 |
PURPOSE: To prevent noise from an ignition coil, etc., from mixing into the signal line of a velocity sensor by arranging an ignition coil and a wire harness concerned with electrical equipment on the side of the frame member on one side of a twin tube type of main frame, and arranging the signal line of a velocity sensor along the frame member on the other side. CONSTITUTION: The main frame 10 of a motor-bicycle is made in the shape of a twin tube consisting of a pair of right and left frame members 10a and 10b extending to right and left from a head pipe 10c, and an engine 12 is mounted under this main frame 10. In this case, ignition coils 18a and 18b for outputting ignition signals to an ignition plug 12b and a wire harness 22 for transmitting and supplying power to the electric equipment (head lamp, turn signal lamp, a cell motor, etc.) at each part of the bicycle body are arranged, being biased to the side of a fame member 10a. On the other hand, a signal line 16 for transmitting the signal of a velocity sensor 14 for ABS is arranged along the right frame member 10b so as to lighten the influence of noise. |
