Motorcycle » 2 WD Function  
 
2 Wheel Drive
 2 WD Function
 2 WD Advantages
2 Wheel Drive Function
With the motorcycle free rolling, the pump rotates roughly with the same speed as the hydraulic motor.

When throttle is applied the rear wheel, due to deformation in the rear tire, starts to rotate a little bit faster thereby increasing the volume stream. More throttle gives more spin.

The increased volume stream causes the speed of the motor to increase, but to a lesser extent than the pump, thereby creating a driving torque from the front wheel.

Thus the transmission is self regulating. More throttle gives more rear-wheel spin which gives higher pressure and thereby more driving force from the front wheel.


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Specification
Pump/Motor
Displacement of pump/motor 5 cc per revolution
Max Speed 12500 rpm
Max Torque 30 Nm
Max Pressure 320 bar
Typical Pressure 50-200 bar

Transmisson
Transmitted Power Capacity 25 kW
Weight 5.2 kg
Oil Volume 0.6 litre
Charge Pressure 3 bar

Motorcycle
Ratio Hydr. Motor/Front Wheel 5.4:1
Torque Distribution 0-15 % on front wheel - depending on ground condition and throttle position
Added Weight on Motorcycle 8.6 kg
Max Pulling Force on Front Wheel 380 N
Hydrostatic transmission

1. Pump Drive
2. Pump
3. Max. Pressure Valve
4. Hydraulic Accumulator
5. Hydraulic Motor
6. Thermostat Valve
7. Front Wheel Reduction/Gear Housing
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