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Wheel change
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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 Coaxial Gearbox

Driving gear wheel uneven, driven gear wheel evennumbered.


The engine drives the gear from the upper left via the input shaft. In all gears except the fourth, the torque is transmitted initially via z1 and z2 to the countershaft. Then, depending on the forward gear, a further gear drive with two gear wheels is involved. In the case of the reverse gear (9, 10), an intermediate gear is added but which is not included in the calculation. The transmission then carries on to the top right, mostly to the cardan shaft


i1 =



i2 =



i3 =



i5 =



iR =


Check your calculation!     You need help?
Please enter numbers only in four of the five fields!
z1 Numbers of teeth
of the driving wheel
z2 Numbers of teeth
of the driven wheel
z3 z5
z7 z9 z11
Numbers of teeth
of the driving wheel
z4 z6
z8 z10 z12
Numbers of teeth
of the driven wheel
i Transmission ratio               Top of page               Index
2001-2014 Copyright programs, texts, animations, pictures: H. Huppertz - Email
Translator: Don Leslie - Email:

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