2010 Ducati Streetfighter S
Ducati’s ‘S’ treatment
of the Streetfighter pushes its tech spec to the red
Öhlins suspension front and rear and lightweight
Marchesini forged wheels stack up serious credibility,
while the front fender and cam belt covers in super-light
carbon fibre help reduce the dry weight to an extreme
But the ‘S’ sophistication doesn’t
end there. Awesome street-going Ducati Traction Control
and Ducati Data Analysis are standard issue, making
it clear that the Streetfighter S is not all muscle
– it’s intelligent too.
The Streetfighter S was Ducati’s first ever
naked sportbike to be fitted with their awesome Ducati
Traction Control (DTC) system.
Accessible from the left-hand switchgear and displayed
on the digital instrumentation, the system offers
a choice of eight profiles, or ‘sensitivity
levels’, each one programmed with a wheel-spin
tolerance matched to progressive riding levels of
skill, graded from one to eight.
While level eight administers a confidence-building,
high level of interaction from the system by activating
upon the slightest amount of wheel-spin, level one
offers a much higher tolerance, resulting in less
intervention for highly competent riders.
Once the level is selected and DTC activated, both
are displayed on the Streetfighter instrumentation.
The system then analyses data sent from front and
rear wheel speed sensors to detect wheel-spin. Should
the system recognise wheel-spin above a certain threshold,
the DTC ECU instantly evaluates the many possible
wheel-spin scenarios before administering two types
of interaction in varying amounts.
DTC is able to sense the exact use that the Streetfighter
is being put to. From slow mid-corner acceleration
with considerable vehicle inclination to high speed
corner exits while almost upright, DTC is intelligent
enough to react according to each and every situation.
It’s even smart enough to not intervene if you
decide to perform a burnout or a wheelie.
The first ‘soft’ stage of system interaction
is executed by high speed software that instantly
makes electronic adjustment to the ignition by administering
varying amounts of retardation to reduce the engine’s
During this initial stage of DTC interaction, both
outer warning lights on the Streetfighter instruments
– normally used to signify over-rev –
illuminate to signify that DTC is being applied.
If the DTC software detects that the first ‘soft’
stage of system interaction is inadequate to control
the wheel-spin, it continues to administer ignition
retardation and instructs the engine ECU to initiate
a pattern of constantly increasing injection cuts
until, if necessary, full injection cut. During this
second stage of system interaction, both outer and
central warning lights fully illuminate to signify
that DTC has also initiated injection cuts.
After either stage one (ignition retardation) or
stage two (pattern of injection cuts or full cut),
the system incrementally returns to the original ignition
and injection mapping as the wheel speeds approach
equalisation. This carefully programmed return to
full power delivery is the real key to DTC’s
smooth and efficient operation.
In developing its World Championship-winning traction
control system for road use, Ducati continue to demonstrate
their strategy of transferring technologies from their
race bikes into the production environment, and show
how solutions developed for performance on the track
really can be applied to enhance safety on the road.
Information is power
The Ducati Data Analyser (DDA) – complete with
PC software, a USB-ready data retrieval card and instructions
– evaluates the performances of the Streetfighter
and its rider, and provides a graphic presentation
of data from various channels of information. The
DDA is available for the Streetfighter from Ducati
Performance, and is supplied as standard equipment
on the Streetfighter S.
Normally only available on race bikes, DDA records
numerous channels of data including throttle opening,
vehicle speed, engine rpm, engine temperature, distance
travelled, laps and lap times. The system also automatically
calculates engine rpm and vehicle speed data, enabling
gear selection as an extra channel of information.
A channel of data is also dedicated to recording the
DTC index, which can then be viewed as a graphic trace
that shows the amount of DTC interaction during wheel-spin.
At the end of a ride or track session, 4mb of data
can be downloaded to a PC ready to compare, analyse
and get an inside view on the performance of the rider
Data can be analysed in graphic form with options
to zoom into detail of specific sections. Dragging
a trace along a timeline to reveal individual values
of the above-listed channels enables the user to analyse
performance in the same way that data technicians
can in factory teams.
While the Streetfighter looks stunning in either
red or sophisticated pearl white set against a black
frame and subtle graphite grey 10-spoke wheels, the
Streetfighter S positively seduces in red and menaces
in midnight black with carbon fibre front fender and
cam belt covers contrasting superbly against the bronze
finish of the frame and Y-shaped, 5-spoke wheels.