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Thursday, 21 August 2014
The Richard Hammond test ride: BMW S1000RR HP4 is a cruise missile
BMW S1000RR HP4
My new BMW S1000RR HP4 is so clever it could probably write its own road test.
It's the most amazing machine I've ever owned and even though I've only had it a few weeks I've already asked it to marry me.
This is how clever the wonderful HP4 is: all modern superbikes (and most bikes in general) have multi-adjustable suspension.
You
can twiddle with pre-load, damping and something called rebound until
you've either turned it into a TT winner or upset it so much that it
will tie itself into a granny knot when you're riding down to the
chippy.
There's no need to risk messing up the HP4's suspension
settings because this bike has semi-active suspension that does its own
working out.
When you turn the engine on the suspension is so
soggy you can bounce the bike up and down, but when you start moving,
little motors in the left front fork leg, and another in the rear shock,
start adjusting the settings for you.
Information on wheel speed,
throttle position, gyroscopic forces and rear shock movement are fed to
a computer that controls the motors. It's uncanny. The ride is super
smooth but the handling is also pin sharp. BMW S1000RR HP4
Cars have had semi-active suspension for years but I've never
driven a car on which it is as successful as this. Normally stiffens on
a bike when you accelerate hard the rear suspension compresses as the
rear of the bike squats.
The steering then goes a bit light and if the road is bumpy you get a wriggle through the bars.
This
is often not good for the laundry bill. But on the HP4, the rear
suspension stiffens as you accelerate and the steering remains perfect.
This
isn't possible with conventional suspension because unless you could
train a mouse to use spanners it would be impossible to adjust shock
absorber settings on the move.
The HP4 has several other goodies
you don't get on the standard S1000RR; Brembo monobloc brake calipers
with amazing stopping power, lighter wheels which improve the ride still
further, and lots of carbon bits.
I can't ride my
new BMW anywhere near its potential because with almost 200bhp it is
like a missile. But owning something so clever is exciting.
It was
only a few years ago that BMW was known for building worthy but dull
bikes. Anyone who thinks that's still the case should sling a leg over
an S1000RR HP4.
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