| 摘要 |
<p>An all wheel drive motorcycle includes an internal combustion engine having an output shaft extending from the engine. A back wheel drive train is coupled to the output shaft with either a first chain or a first shaft. The first chain or the first shaft couples to a rear wheel drive sprocket or a rear wheel drive gear that couples to the first chain or first shaft, respectively. The motorcycle includes a front wheel drive train that extends from the output shaft to a universal joint that is positioned on the motorcycle within a range of about plus or minus ten degrees of perpendicular to the steering axis of rotation of the front fork where the front fork supports and retains the front wheel. The universal joint and the output shaft are coupled together with either a second drive chain or a second drive shaft. The universal joint includes a stub shaft having a front wheel drive sprocket engaging a front wheel drive chain where the front wheel drive chain also engages a front axle sprocket that supplies a drive force to the front wheel.</p> |
