DDC (Dynamic Damping Control)
Dynamic Damping Control DDC is a world first in serial motorcycle production. It enables the damping of the upside-down fork and spring strut to the relevant riding situation – for example when changing direction rapidly in racetrack chicanes.
Damping is adjusted to the current riding manoeuvre and the present road characteristics on the basis of sensorily determined parameters via electrically controlled regulating valves in a matter of milliseconds. This is how, for example, the HP4 offers its rider the best possible damping coordination in all driving situations, processing both long and short-frequency road impact almost perfectly, thereby facilitating maximum traction and safety. The DDC responds automatically to driving manoeuvres such as braking, accelerating or cornering and thus ensures perfect road contact.
Extended information and functions available with DDC, such as the display of the DDC setup menu. Within this menu the rider can select one of the three key fields for the basic settings "Comfort", "Normal" and "Sport" – depending on his personal needs and the specific requirements of the route.
The damping can also be individually adapted to the driver's wishes by means of the setup menu. As with a mechanical setting, it is possible to set the suspension to a softer setting (-7) or a harder setting (+7). The spring mount (spring preload) is adjusted in the usual way by hand using a 17 mm spanner.
In "rain" and "sport" mode, the focus of the adjustment of the DDC is on a full, pleasant damping, as preferred on country roads on poor to well-surfaced roads. In "Race" and "Slick" mode, the DDC is tailored for performance and supports a very sporty riding mode, particularly on the racetrack. The damper setting is tight and always offers the driver crystal clear feedback about the relevant driving situation at all times.
Before the journey begins, the system check and the flow of information from the engine controller, sensor box and spring travel sensor to the DDC Dynamic Damping Control are activated when the ignition is switched on. The DDC controller processes a large volume of dynamically-relevant information, such as rear spring travel, speed and throttle setting. In addition, the sensor box supplies the DTC with information about the cornering clearance of the motorcycle and other parameters.
The two wishbones of the DDC upside-down fork are identical in structure – the difference can be found inside the stand pipe and immersion pipe. Thus the setting mechanism for the spring mount, which can be varied by 15 mm (RR 20 mm) ("spring preload") is located in the right fork leg. The valve responsible for the dynamic build-up of the damping force is housed in the damping cassette of the left fork leg together with the relevant electric connection. The compensation space in the lower part of the left fork leg is under increased gas pressure and absorbs the oil pressed from the damper piston rod in the sealed cartouche.
The telescopic fork damping is controlled on a generalised basis as standard and is not separated according to traction and pressure level. The new DDC spring strut is attached to the frame by means of an alloy insert, the so-called sliding block. The motorcycle is supplied with a 0 mm insert. The two inserts provided (1.5 and 3 mm) can be used to raise/lower the rear of the motorcycle and to adjust the suspension geometry to the road conditions and the individual wishes of the rider. When a different sliding block is used, the rear spring travel sensor must be calibrated appropriately by means of the setup menu. The suspension height is adjusted in the usual way at the front by means of the for bridge attachment.