赛车上常说的跟趾动作,具体是怎么做出来的?一般的汽车上能做吗?

2025-03-16 13:50:56
推荐回答(1个)
回答1:

凡赛车必有4个脚踏,除常见的油门、刹车和离合器脚踏外,还有一个是提供车手在非转档时踏脚的固定脚踏(DEAD PEDAL )。这脚踏在赛车转弯时,供车手踏脚以保持身体平衡。 在赛车高速地驶达直路末,准备入弯前: 1、车手开始刹车。 2、车手踏下离合器。 3、降档。 4、车手用脚掌的左部踏着刹车而脚跟横移,施力,踏下油门,使引擎转数提升。跟趾动作可令车手同时作出踏离合器,刹车和加油三个动作,令赛车可在极短时间内完成减速和降档等入弯前准备。在降档过程中,踏下离合器时同时加油,这动作主要是把引擎转数提升至下一档所需的转数,以配合转低档后所需要增加的转数。(如:赛车在减速前的速度是180公里等于5档×7500转(rpm),当车速减至120公里时,引擎转数等于5档×5000转(rpm)但这时车手降档至4档,由于5档和4档的变速比例不同,在同样120公里的速度下新的引擎转数等于4档×7000转(rpm)。如果车手不再踏下离合器的时候把引擎转数提升至7000转(rpm),如果只依靠离合器强行的把引擎拖到所需达到的转数,这不但会使变速箱和引擎的负荷与耗损增大,甚至会使驱动轮发生打滑现象,这种情形,在湿滑路面更为明显,严重的会使车身失控。在弯中打转,发生意外。 5、左脚松开离合器踏板,如需要继续降档,重复第2~3点动作。 6、完成整个降档和减速的过程后,把左脚放回固定踏板,右脚控制油门,准备入弯。

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