This year Christini introduced its brand-new AWD
450DS Explorer. This machine features an aluminum
twin-spar frame and a water-cooled, fuel-injected, 450cc
engine, both of which mirror a Honda CRF450X in looks
and design, though they are manufactured in China. The
machine is street-legal, is fit with a very quiet exhaust
system that has two catalytic converters, and
meets both EPA and CARB requirements.
According to Christini, this machine is
designed for exploring and can get you
from the roads onto the trails with the ability to manage
terrain that could be a problem for the average rider looking
FACTS ABOUT THE AWD 450DS
Both the frame and engine come out of China from the
Asiawing plant. The frame is modified at the factory via special machining and is robotically CNC-welded to accept the
Christini front-wheel-drive unit. The unit transfers power to
a drive shaft running under the tank into a modified steering head. Inside the head tube there are a series of gears
that drive power to the lower triple clamp through dual drive
shafts. These telescoping drive shafts use a system that
allows them to move freely under high levels of torque without hampering the 300mm of fork travel. Finally, the power
is transferred into the gearboxes on the front axle, which
then funnel the energy to a patented Christini front hub. The
hub is equipped with dual one-way clutches that allow the
front wheel to accept power when needed and to otherwise
DOES THE FRONT WHEEL DRIVE ALL
No. The front wheel is driven at a lower rate than the rear
wheel (by about 20 percent). When conditions are perfect
and the rear wheel is driving, the one-way clutches in the
front hub allow the front wheel to freewheel; it is turning,
but there is no power going to the front wheel. The front
drive kicks in when the rear loses traction, churning at a
rate relative to the speed of the machine. It maintains drive
until the rear wheel quits spinning.
IT LOOKS LIKE A 450X; HOW IS THE POWER?
The folks who cloned the Honda engine are great at their
job. The Christini engine is unique (compared to the SSR
brand, which is normally aspirated) in that it’s fuel-injected.
In order to meet the sound requirements, a dual catalytic
converter is fit into the exhaust at the header and the tail-
pipe. It’s an electric-start five-speed, and the brochure
claims it makes 40
The rider is off the machine
and pushing hard, both
physically and at the throttle.
Notice that both wheels turn
when the rear is spinning.
Power runs via a chain from the secondary countershaft
sprocket to a gearbox sprocket located inside the frame.
The lower triple clamp contains two drive chains and
sprockets to deliver the power to shafts that exit at the
bottom of the triple clamps. Two telescoping drive shafts
travel with the fork movement, and the front hub lets it
freewheel or engage for power when needed.