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Video Formulary

Video Generally
Video Axle Load Distribution
Video Payload Distribution
Video Braking Distance
Video Driving Force
Video Work/Energy
Video Radian Measure
Video Tension (brake)
Video Brake Force
Video Brake Pedal
Video Brake Force (wheel)
Video De-/Acceleration
Video Braking Distance
Video Braking Period
Video CO2 emission
Video Density
Video Torque
Video Pressure
Video Injection Quatity
Video Electrical Power
Video Riding Speed
Video Centrifugal Force
Video Gas Speed
Video Speed
Video Coaxial Gearbox
Video Lever Ratio
Video Hollow Cylinder
Video Stroke-bore Ratio
Video Displacement
Video Power Output p.l.
Video Hydraulic Ratio
Video Capacity
Video Piston Speed
Video Piston Force
Video Force
Video Crank Mechan. Forces
Video Fuel Consumption 1
Video Fuel Consumption 2
Video Fuel Consumption 3
Video Ciruit Area
Video Circuit Ring
Video Circumference
Video Clutch Pedal
Video Power (mechanical)
Video Power (effective)
Video Power (indicated)
Video Efficiency Weight
Video Wire Resistance
Video Steering Ratio
Video Volumetric Efficiency
Video Air Ratio
Video Venturi
Video Air Resistance
Video Parallel Circuit
Video Planetary Gearbox
Video Percent
Video Rectangle
Video Rectangle Column
Video Friction Force
Video Tyre Calculation
Video Serial Circuit
Video Rolling Resistance
Video Cam Dwell
Video Dwell Period
Video Slip
Video Spread of Gears
Video Climbing Resistance
Video Ratio
Video Circumference speed
Video Conversions
Video Not Coaxial Gearbox
Video Valve Opening Area
Video Valve Opening Angle
Video Valve Opening Period
Video Compression Ratio 1
Video Compression Ratio 2
Video Amount of Heat
Video Resistance
Video Efficiency
Video Cube
Video Ignition Interval
Video Cylinder

          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

Formulary Frictional Force

The correlation between transferable and friction force

The clutch is considered to be the drive train component which is subjected to the highest strain. The momentum which it has to transfer, depends first of all, on the available diameter and the engine torque to be transferred. Of course the pressure force of the springs, thus the pedal force, should also not be excessive. Finally, as a rule, a security factor of 1,1 to 1,6 - which has not yet been entered into the formula below - is taken into account.

The friction coefficient (dry) for organic pads or linings is 0,25 to 0,5, and for inorganic 0,3 - 0,6. In wet-clutches with different linings it is lower.

Friction coefficent
Organic lining0,25
Inorganic lining0,4

          2     ra - ri
rm = ·
          3     ra - ri

FR = FA · µ · z

MR = FA · rm · µ · z

FA =
        µ · z

FA =
        rm · µ · z

µ =
        FA · z

µ =
        FA · rm · z

rm =
        FA · µ · z

Check your calculation!     Do you need help?
Please enter numbers only in four of the six fields!
FA Contact pressure force N
rm Average radius m
µ Friction coefficient
z Number of friction areas
FR Friction force N
MR Torque Nm               Top of page               Index
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