| 摘要 |
A rear suspension apparatus is disclosed for a high speed vehicle body having a first and a second driven ground engaging wheel. The apparatus includes a first truck arm having a first and a second end. The first end of the first arm is connected to the body of the vehicle at a first fixed location. A second truck arm has a first and a second extremity, the first extremity of the second arm being connected to the body of the vehicle at a second fixed location. A drive axle has a first and a second side, the second end of the first arm being secured adjacent to the first side of the axle. The second extremity of the second arm is secured adjacent to the second side of the axle such that the axle is supported by the arms. The arrangement is such that a first plane extending through the first and second sides of the axle is disposed spaced and parallel relative to a second plane extending through the first and the second locations. The first truck arm is fabricated from a material having a first hardness and the second truck arm is fabricated from a material having a second hardness. The arrangement is such that when the first ground engaging wheel which is drivingly connected to the first side of the axle is driven and the second ground engaging wheel which is drivingly connected to the second side of the axle is driven, a first force tending to increase pressure between the first ground engaging wheel and the ground and a second force tending to decrease pressure between the second ground engaging wheel and the ground is compensated for by a difference in hardness between the first and second hardness of the respective arms. The arrangement is such that when the wheels rotate, a first contact force between the first wheel and the ground substantially equals a second contact force between the second wheel and the ground so that acceleration of the vehicle body is enhanced.
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