250 likes | 823 Views
Rear Suspension Styles. Rear wheel drive. Live Axle with leaf springs. Wide leaf springs control side sway well A large amount of unsprung weight Leaf springs take up a lot of space. For every action there is an equal & oposite reation
E N D
Live Axlewith leaf springs • Wide leaf springs control side sway well • A large amount of unsprung weight • Leaf springs take up a lot of space
For every action there is an equal & oposite reation • When the wheels turn clockwise, the the rear axle housing trys to turn counterclockwise • Axle wind up
This helps prevent axle wind up Note the axle is mounted off center on the spring
Mounting one rear shock in the front of the axle and one behind the axle helps to reduce wind up and axle tramp
Live Axlewith coil springs Side movement • The upper control arms control lateral movement (side movement) • The lower control arms control differential torque (wind up)
Watt’s Link A Watt’s link allows the suspension to travel up and down while preventing the axle from moving side to side.
Note. . . single leaf spring on independent suspension (RWD) Diff. Housing
When the “A” shaped control arms are mounted at an angle, they are called semi-trailing control arms Used on several sports cars Handles cornering loads better
Multilink independent rear susp. Note Hydraulic mount on this model Superior noise and vibration dampening Hyd. mount Nissan P-146
Semi-independentrear suspension • The axle assemble twists, which gives the semi-independent effect
Semi-independentrear suspension • The axle assembly acts as a sway bar • Track bar controls side movement
Tracking bar with diagonal brace Another style also used with a semi-independentrear suspension
MacPherson strut rear suspension Is this Fords better idea???
MacPherson strut rear suspension Note. . . toe adjustment Toyota
Modified MacPherson strut rear suspension Common on FWD vehicles Ford
Double wishbone type rear suspension Some models have flexable rubber bushings Mazda
Torque loads create bushing and control arm deflection during braking, corning, acceleration and deceleration. This causes a toe change to enhance straight line stability Toe change during corning leads to quickerand more responsive steering