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Video History-Suspension 1
Video History-Suspension 2
Video History-Suspension 3
Video History-Suspension 4
Video History-Suspension 5
Video History-Suspension 6
Video History-Suspension 7

Video Undercarriage 1
Video Undercarriage 2
Video Steering Wheel 1
Video Steering Wheel 2
Video Steering Lock
Video Steering
Video Safety Steering
Video Rack Pinion Steering
Video Steering Ratio 1
Video Steering Ratio 2
Video Steering Ratio 3
Video Ball Steering
Video Worm Roller Steering
Video Hydraulic Power Steer. 1
Video Hydraulic Power Steer. 2
Video Electr. Power Steer. 1
Video Electr. Power Steer. 2
Video Electr.-hydraulic Pump
Video Torque (power steer.)
Video Electr. Stab. Program
Video Finger Steering
Video One-piece Track Rod
Video Four Wheel Steering 1
Video Four Wheel Steering 2
Video Four Wheel Steering 3
Video Dry Joint
Video History
Video Suspension control 1
Video Wheel positions
Video Suspension
Video Spring systems
Video Electr. Air Suspension
Video Center of Gravity
Video Oblique/lateral drift angle
Video Elasto-kinematics
Video Elk Test
Video Wheel Bearing 1
Video Wheel Bearing 2
Video Wheel Bearing 3
Video Wheel Bearing 4
Video Ind. pulse sensor
Video Wheel sensor 2
Video Transversal Axis
Video Suspension Carrier
Video Below View
Video Adj. suspension
Video Stabilizer 1
Video Stabilizer 2
Video Double-wishbone 1
Video Double-wishbone 2
Video Double-wishbone 3
Video Air suspension truck
Video McPherson Strut 1
Video McPherson Strut 2
Video McPherson Strut 3
Video McPherson Strut 4
Video Trailing Arm
Video Twist-beam Rear Axle
Video Space Arms
Video Multilink Axle
Video Semi-trailing Arm Axle
Video Rear-wheel Drive
Video Electr. Stab. Program
Video ABS/ESP-Hydr. Unit
Video One-arm Swing. Fork
Video Formula-3 Racing Car
Video Pend. Wheel Suspen.
Video Torson Crank Suspen.
Video DeDion Axle 1
Video DeDion Axle 2
Video Rigid Axle 1
Video Rigid Axle 2
Video Rigid Axle 3
Video Rigid Axle 4
Video Rigid Axle 5
Video Self steering axle
Video Track rod joint
Video Springs
Video Coil Spring 1
Video Coil Spring 2
Video Coil Spring 3
Video Leaf Spring
Video Torsion Bar Spring
Video Rubber Suspension
Video Hydropn. Suspension
Video Air Suspension 1
Video Air Suspension 2
Video Shock Absorber 1
Video Shock Absorber 2
Video Shock Absorber 3
Video Shock Absorber 4
Video Shock Absorber 5
Video Single-tube Damper 1
Video Single Tube Damper 2
Video Double-tube Damper
Video Shock Absorber Piston
Video Friction Absorber
Video Tyres
Video Wheel Positions

Video Tyre Calculation
Video Inch -> mm
Video Slip
Video Axle Load Distrib.
Video Payload Distrib.
Video Roller Resistance 2

Video Wheel suspension 1
Video Wheel suspension 2
Video Wheels 1
Video Suspension 1
Video Suspension 2
Video Suspension 5
Video Steering 1
Video Steering 2


          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

McPherson Strut







Particularly low unsprung mass!

Shock absorber with dome-bearing instead of upper suspension arm

If one wishes to design a suspension system, particularly for the front axle, simply, at a reasonable price and using as little space as possible, one cannot ignore the McPherson strut. Just how elegantly the wheel guide gets by the axle drive shaft, can be seen above in figure 5. As a further development of the double-wishbone-wheel suspension, the upper wishbone is left out here and the wheel guidance is partially transferred to the damper. It is also accordingly dimensioned, e.g., with a thicker piston rod. It ends on top with the so-called dome-bearing which allows the rotation of the complete damper. The commonly used coil spring is also completely pivoted with the steering movements. Instead of a spring coiled around the damper, a torsion bar spring suspension on the remaining lower wishbone is also possible. We then speak of a 'shock strut'.

Sloping swive-axle, possibly with adjustable inclination

The distinguishing mark of the McPherson strut is the wheel bearing directly linked to the damper casing. If this is screw-mounted (figure 4), the angle between the two is possibly adjustable. By the way, the steering-swivel axle is independant of the piston rod axle. It connects the middle of the dome-bearing on top, with the ball-head on the wishbone below. One can recognise their direction, by the coil spring which is arranged as shown in the above figure 2, as a rule, slanting to the damper. The lower wishbone can be still replaced by a simple suspension arm (figure 6). The second part forms the stabiliser, which is screwed on directly. In the remaining figures it has its own suspension arm to the respective wishbone.

Through greater friction on the plunger, the McPherson-strut does not react as sensitively as other suspensions.

Patent from 1949 Earl S. McPherson(1891-1960) Chief engineer GM






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Translator: Don Leslie - Email: lesdon@t-online.de

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