Since the original YZF-R1 was released into an awe-struck marketplace,
Yamaha’s flagship 1000cc model has established a reputation as being one of
the most innovative and exciting motorcycles in the large-capacity
supersport class. For 2010 that outstanding reputation is sure to be further
reinforced.
Featuring an all-new 998cc engine whose design, feel and
character has been influenced by Lorenzo's championship winning M1, the new
high-tech R1 powerplant is closely linked to our Moto GP bike. In fact the
2010 model R1 engine has benefited from more Moto GP developed technology
than any other in its long and prestigious history.
In addition, the completely redesigned aluminium Deltabox chassis and
aggressive new styling, give the new-generation YZF-R1 a radical new look
and bring innovative technology to the class. In the same way that the
original YZF-R1 threw the rule book out of the window, this revolutionary
new model sets a new benchmark for the super-competitive 1000cc supersport
category.
Features:
Crossplane crankshaft engine
for purer torque output
Rather than look
exclusively to additional
electronic aids to further
enhance the new YZF-R1’s
performance and
controllability, Yamaha’s
engineers have opted for a
mechanical solution. The
defining and most
influential feature of the
new YZF-R1 is the use of an
innovative new 998cc engine
which has been developed
from our winning YZR-M1 Moto
GP design. Undoubtedly the
single most significant
piece of technology to be
seen on this compact new
high-performance engine is
its race-developed
crossplane crankshaft, which
delivers outstandingly pure
torque characteristics and
high levels of traction.
Indeed, the new engine’s
linear and controllable
torque characteristics are
the very essence of this
radical new generation
YZF-R1.
Uneven
firing interval for new
levels of feel and traction
The new engines uneven
270 - 180 - 90 - 180 firing
interval creates a whole new
feel to the inline
4-cylinder engine, giving
the new YZF-R1 rider a more
precise and immediate
feeling of control over the
torque output levels. In
addition, the new engines
linear torque delivery gives
rise to a
confidence-inspiring
sensation that makes each
throttle input, however
subtle, feel as though it is
transmitted directly to the
rear tyre. The result of
this rider-responsive torque
is an enormously capable
1000cc supersport motorcycle
that is designed to deliver
previously unattainable
levels of traction for
unrivalled cornering
performance. To accentuate
the performance gains of the
new crossplane crankshaft
engine, we have also
developed a new
short-wheelbase aluminium
Deltabox chassis and
optimised the front and rear
suspension systems. And the
radical and aggressive new
styling emphasises the new
YZF-R1s concentration of
mass.
Newly-designed inline
4-cylinder engine
This remarkable new
998cc liquid-cooled
inline 4-cylinder
4-valve engine features
bore x stroke dimensions
of 78.0 mm x 52.2 mm,
giving an extremely
short stroke layout,
together with the
largest bore dimensions
ever used on a Yamaha
1000cc supersport
engine. In association
with the short stroke
and big bore, a high
compression ratio of
12.7:1 is featured,
which contributes to the
new engines impressive
power output of 182 PS
at 12,500 rpm, and a
torque output of 115.5
Nm (11.8 kg-m) at 10,000
rpm with natural
aspiration.
Crossplane crankshaft with
uneven firing interval for
linear throttle control
Undoubtedly the most
significant change for 2009
is the use of an all-new
crossplane crankshaft which
is based on the advanced
race-bred technology that
was originally developed for
the Yamaha YZR-M1 MotoGP
racing machine. This new
crossplane crankshaft has
been introduced in order to
enable the new engine to
produce more linear torque
characteristics, together
with more accurate and
linear throttle control (see
sidebar on right for
explanation). The new
engines linear power
characteristics deliver a
1:1 relationship between the
riders throttle input and
the engines output to the
rear tyre, and it is this
crucial aspect of the new
bikes character that allows
the rider to experience a
new of level of cornering
performance, together with
outstanding traction when
entering the mid-section of
a corner, and also when
accelerating out of a bend.
Another feature of the
crossplane crankshaft with
uneven firing interval is
the very special exhaust
note that this layout
produces, and the new YZF-R1
engine note has much in
common with the YZR-M1
racing machine.
Newly-developed forged
aluminium pistons
The new YZF-R1 is
equipped with
lightweight forged
aluminium pistons.
During the special
forging process, the
aluminium alloy is not
actually melted, but is
only heated to the
temperature where it can
be shaped under pressure
in the forge. This
system allows the
aluminium to retain more
of the original strength
of the metallurgic
matrix, which enables
our engineers to specify
a lighter piston design,
thereby reducing
reciprocating weight and
enhancing throttle
response.
Closed-deck
ceramic-composite plated
cylinder
The new lightweight
ceramic-composite plated
cylinder provides
excellent heat
dissipation together
with an outstanding
rigidity balance. This
new short-stroke
cylinder features a
closed-deck design in
which the coolant
passages do not pass
from the cylinder into
the cylinder head, and
this makes for high
levels of reliability in
this type of high
compression inline
4-cylinder engine. The
new short-stroke engine
also benefits from
shorter cylinder stud
bolts which gives a
weight reduction, and at
the same time helps
reduce overall engine
height to give compact
overall dimensions.
Fracture split (FS)
carburised con rods
The new model YZF-R1
is equipped with
fracture-split (FS)
carburised con rods, a
system that has been
used successfully by
Yamaha since the 2004
model YZF-R1. The two
halves of each
fracture-spit big end
ring are re-assembled
along the same fracture
lines, and this makes
for a stronger and more
perfectly round big end,
giving outstanding
performance and
reliability.
Optimised large-diameter
crank journal and
flywheel mass
The all-new YZF-R1
engine design is
equipped with a larger
36 mm crank journal
(compared to 32 mm
diameter on the 2008
model YZF-R1) which is
designed to handle the
new power and torque
characteristics of the
crossplane crankshaft.
YCC-I
(Yamaha Chip Controlled
Intake)
The YCC-I system features
electronically-controlled
intake funnels whose length
can be varied to suit the
prevailing engine speed in
order to provide good intake
pulsation. At low to mid
engine speeds the long and
short funnels operate as a
single connected unit, but
when the engine speed
exceeds 9400 rpm the YCC-I
on the new YZF-R1 engine
automatically separates the
lower funnel and upper
funnel by means of an
electronically-controlled
servomotor. By varying
intake length to suit engine
rpm, the YCC-I system
enables the new YZF-R1
engine to operate more
effectively across the rpm
band, and the funnel
separation process is so
smooth that the rider is
unaware it has happened.
YCC-T
(Yamaha Chip Controlled
Throttle)
The advanced YCC-T
electronic throttle
system delivers
outstanding
controllability at all
speeds, and helps to
prevent any hesitation
caused by an excessive
fuel/air supply when the
throttle is opened
suddenly. The system
adjusts the throttle
valve opening via a
servomotor at intervals
of 1/100th of a second.
By constantly
calculating and
adjusting the optimal
throttle opening and
intake air volume to
match the prevailing
engine running
conditions, the YCC-T
consistently ensures
that the new YZF-R1
engine produces an
optimum drive torque
curve and the ignition
timing is mapped
separately for each
cylinder in order to
ensure efficient
combustion processes.
Fuel
injection system with
secondary injector
The YCC-T operates a
highly-efficient twin
injector type fuel
injection system which
is designed to deliver
outstanding throttle
response and remarkable
performance at all
riding speeds. This twin
injector system features
a main injector together
with a secondary
injector, which is
situated at the upper
edge of the funnel. The
secondary injector comes
into operation in the
engines mid to
high-speed range to
complement the main
injector, and this
design ensures
remarkable response and
outstanding acceleration
and performance.
D-mode Map
For the first time on
a Yamaha supersport
model, the new YZF-R1 is
equipped with a D-mode
Map which works in
association with the YCC-T
(Yamaha Chip Controlled
Throttle) and allows the
rider to select a
performance profile to
match their
requirements. The D-mode
Map consist of three
modes which are:
Standard mode; A mode;
and B mode; and the
rider can choose which
mode is best suited to
the prevailing riding
conditions by operating
a switch on the
handlebars. Standard
mode is mapped to give
optimum all-round
performance, while the A
mode delivers sharper
engine response, and the
B mode gives a gentler
response to the riders
throttle inputs.
Redesigned forced air
intake
The YZF-R1s
redesigned forced air
intake system utilises
the natural airflow to
increase the pressure of
the air in the airbox,
and this ensures
increased levels of
power at higher speeds
for outstanding
performance. This system
takes air in through the
front cowl, and channels
it via the left and
right sides of the new
frame, directly into the
airbox. For 2010 the
YZF-R1s forced air
intake system
incorporates special new
side branches which
reduce intake noise.
Slipper clutch
For even more stable
handling performance
when decelerating during
quick downshifting, the
2010 YZF-R1 is equipped
with a slipper clutch.
This clutch features a
mechanism that adjusts
clutch spring load when
excessive torque is
transferred from the
rear wheel to the crank
when the rider changes
down through the
transmission. By
controlling excessive
engine braking forces,
this system enhances
overall controllability.
4-2-1-2 exhaust and twin
up-slanted mufflers
In order to ensure an
effective exhaust
pulsation to complement
the new engines
crossplane crankshaft,
an all-new exhaust
system is fitted, in
which the exhaust pipes
for the 1st and 4th
cylinders and for the
2nd and 3rd cylinders
are brought together in
a 4-2-1-2 layout. This
high performance system
features a 3-way
catalyser positioned at
the point where the four
exhaust pipes meet, and
outstanding
environmental
performance is ensured
by an O2 sensor linked
to the ECU which
constantly adjusts the
fuel/air mix in order to
minimise harmful
emissions. The stylish
triangular-shaped
mufflers emit a sharp,
gutsy exhaust note which
complements the unique
pulse created by the
asymmetric firing
sequence of the new
crossplane crankshaft.
The triangular design
also contributes to the
tighter and more compact
body design of the
all-new YZF-R1, while at
the same time giving the
bikes rear end a sharp
new look.
