I
owned a pre 'VTEC' VFR 800
for a while and enjoyed over 20,000 kilometres on
the model. When on
a
bike tour a couple of years ago I also covered
around
4,500 kilometres on the earlier 750 model. The first
generation
800 progressed more over to the role of
dedicated
tourer than the early 750 but this
latest
'VTEC' 800 seems to have regained some more of the VFR's original sporting
intentions.
Not so much from the drivetrain but from the fact that the
bike
seems more up to being ridden a little harder than before. The suspension
is
soft and supple to iron out all the road irregularities and too soft for
serious track day use but is more than capable of being hustled quite
quickly when
enjoying a set of bends on the street. It is easily up to the task of
any fast road work and I have no doubt a good rider on a VFR will always
have the upper hand when pitted against a less experienced rider on the
latest crotch rocket.
The frame has a
revised steering head and larger
43mm stanchion tubes in place of the earlier model's 41mm tubes
with revised valving which explains some of the performance improvement.
Braking performance is exceptional. This latest generation combined
braking
system is
by far the best yet seen and is perfectly suited for road work,
yes even for fast road work. At the track I would still prefer
independent
brakes
but the track is not what the VFR is about. The touring biased suspension
would be the limiting factor at the track, not the combined brakes. I
tested the
VFR back-to-back with a CBR 929 in full emergency stop tests from 100kph
down to a complete halt. To
my amazement the VFR managed to pull up a
few feet
shorter than the Fireblade on every occasion, even when swapping riders
and
performing the test time after time. I would still prefer the Fireblade
brakes for racetrack duties but there is no question that the
VFR has some of the best road speed braking performance available.
Some markets also get
the option of ABS. Australia receives only the non-ABS model.
So instead of having a DCBS-ABS we just get the DCBS.
Where nearly all previous
Dual Combined Brake Systems use
the front
brake lever to control the
two outer pistons of both front 3-piston calipers, the new VFR's front
brake lever operates the two outer pistons of the left-side front caliper
and all three pistons of the right-side caliper, as well as the centre
piston of the rear brake caliper (by way of the secondary master
cylinder), resulting in a more front-oriented braking response.
The foot brake pedal
that previously actuated the two outer pistons of the rear brake caliper
and both centre pistons of the front calipers now actuates the same two
rear brake caliper pistons, but only the one centre piston of the left
front caliper. This revised balance of braking force is administered
through a direct-side proportional control valve (PCV) mounted inline
between the foot brake master cylinder and the rear caliper.
During light
applications of the foot brake, most of the actual braking force is
applied at the rear wheel, with only the slightest amount of front brake
input at the one left-side caliper providing a steadying influence on the
balance of front and rear brake control without causing unsettling shifts
of weight and its related front-end dive.
However, this balance
of operation changes in response to strong pedal operation, in which case
the system adjusts for an optimal balance of front and rear braking
forces.
As in other Dual
Combined Brake Systems, the compact secondary master cylinder integrated
into the left-side caliper's pivoting mount increases rear caliper brake
pressure through a servo-side PCV as its own braking forces increase in
response to front brake lever actuation. This results in a smooth
combined
force
that starts with greater emphasis on the front brakes and gradually,
but firmly,
applies a balancing amount of rear brake
whenever the situation calls for it.
Taken
together, these two brake operation scenarios provide a more aggressive
distribution of braking forces that both enhances braking confidence for a
wider range of riders and skill levels.
Put simply, these brakes are excellent.
Comfort was high on the list of design parameters for the VFR and it must
be
said that the VFR is about as comfortable as motorcycles get. Even the
pillion passenger is well looked after with reasonable leg room and
generous
seat
padding.
Wind
and
weather protection is of course excellent. |