The
first of its kind in the country should be able to set some
standards.
 Hyosung
has a long standing association with Suzuki of Japan wherein
they develop and build engines for various models. The experience
led them to open up their own research and development units
to manufacture engines for their own machines, one of which
powers the Aquila.
In the Indian context, the Aquila has the most modern technology
bristling in its powerplant. Though not state-of-the-art,
(the technology has been prevalent for 20 years) the engine
is a 4-stroke vee twin that displaces 250cc. The hi-tech
bit comes in with the four-valves per cylinder layout with
a dual overhead cam which gets the best efficiency out of
this engine. The 57.0mm x 48.8mm bore stroke configuration
makes 26bhp@9000rpm of max power and max torque of 23.93Nm@7500rpm.
The power and torque figures put it in a league way above
any other Indian motorcycle in any category. Intake is through
twin Mikuni BDS 26 type constant velocity carburettors.
The engine is cranked to life by an electric starter alone,
a kickstart lever not figuring in the equation. Though the
engine is conventionally air cooled, the engine oil is cooled
by an oil-cooler that slots at the front of the engine.
Though refined the engine note gets gruff and rough after
long rides with vibrations that seem intrusive at low speeds
but are ironed out as revs build up in higher gears. Never
mind since it is the power and torque characteristics which
can lay a kick in your pants every time you gas the engine
or just amiably cruise for hours on end that make the Aquila
a delight to ride. Power delivery is smooth though I did
feel a minute lag whenever I squeezed the throttle. Torque
is well spread out coming in from lowdown in the rev band
and provides fantastic rideability both in city and on highways.
Transmission is via a five-speed box with the gears slotting
through a toe shifter. Gears are well spaced to match the
power band and shift is quite smooth though slotting it
into neutral requires you to shift into second and then
tap down to neutral since going up the other way is a harder
operation. At first the shift quality may seem a bit hard
but all it needs is some adjustment of the clutch cable
to free the movement. |
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