| 摘要 |
<p>PURPOSE:To increase the straight line stability of a front wheel against the beam wind by making the body flank project area on the rear side from the center-of-gravity position of an unladen vehicle larger than that of the front side. CONSTITUTION:A seat 12 for a rider M is disposed between a front wheel 1 and a rear wheel 2 provided in the steerable state, and a roof 6 is provided above this seat 12. In this case, the body flank project area on the rear side from the center-of-gravity position CG1 of an unladen vehicle is made larger in the body flank project area than that on the front side. When the beam wind blows against the body during running, the influence of this beam wind thereby acts more upon the rear side, with the large body flank project area, from the center-of-gravity position CG1 of the unladen vehicle. The influence of the beam is therefore distributed more on the rear wheel 2 side, and the influence on the side of the front wheel 1, which is a steering wheel, is lessened so as to increase the straight line stability of the front wheel 1.</p> |
