Chapter 21 Axle and Wheel 同©大学 TONGII UNIVERSTTY Axle types >Solid axle:usually used along with rigid suspension system,the middle of solid axle is rigid. >Live axle:usually used along with independent suspension,each wheel mounts separately to the frame thus the wheels act independently of one another. Two-axle vehicle >Front axle is steering drive axle and rear axle is support FF or AWD axle(or dive axle). >Or front axle is steering axle >FR or RR and rear is drive axle. >Multi-axle vehicle front axle is steering axle and rear is drive axle,middle axle acts as support axle or drive axle.Chapter 21 Axle and Wheel Two-axle vehicle Front axle is steering drive axle and rear axle is support axle(or dive axle). Or front axle is steering axle and rear is drive axle. FR or RR FF or AWD Multi-axle vehicle : front axle is steering axle and rear is drive axle ,middle axle acts as support axle or drive axle. Axle types Solid axle：usually used along with rigid suspension system, the middle of solid axle is rigid. Live axle：usually used along with independent suspension, each wheel mounts separately to the frame thus the wheels act independently of one another