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Kyosho have announced their
new Ultima RT5 electric racing truck. It’s an all-new design that is the
result of years of R&D and includes the collective experience of the
world’s most experienced RC racing drivers and engineers from the world’s
most experienced RC racing company. The main goal of the new Ultima RT5 is
simple, to win. Each aspect of the truck is specially designed and
tested to produce maximum performance. Likewise, the materials chosen for
the new Ultima are exhaustively tested all with the goal to create the
ultimate no nonsense competition truck that’s ready to take on the world.
Composite Chassis –
The chassis plate is 23mm longer than the RB5. Light and strong, featuring a
specially formulated carbon fiber composite for the best balance of
performance and durability. Strategic braces molded into the chassis enhance
the stiffness without adding any unnecessary weight. Separate front and rear
“clips” allow fast and easy removal of the front and rear end of the
car, which makes maintenance and repair much easier. Designed to accept
stick packs and 2 cell LiPo packs, the RT5 chassis features an adjustable
battery mounting position that allows you to shift weight bias to suit track
conditions and your driving style.
Rear Suspension –
The rear suspension are symmetrical so a single replacement arm can be used
on either side of the truck, saving money and space inside your pit box
because you don’t need to carry as many replacement parts. The inside of
the arms are attached to the chassis using separate suspension mounts, which
will allow anti-squat adjustment. The new rear wheel hubs feature a new
quick release function, allowing you to make a quick tire change with no
tools. Vertical ball studs for the both inner and outer rod ends of the
upper link means the rear suspension geometry can be fine tuned with shims.
Transmission - The new
transmission features a smaller, more compact housing that keeps the motor
as low and close to the transmission as possible, which reduces CG and
improves bump handling. The three- gear transmission features a new heavy
duty SP idler gear an internal ball differential that uses Tungsten Carbide
Differential Balls and 1/16-inch thrust balls. The differential is also
externally adjustable, a dust cover fits over the adjustment holes so the
thrust bearing last much longer. An injection molded gear cover is included
which better fits the motor plate to minimize dust and debris for longer
gear life.
Front Suspension –
Symmetrical suspension arms connect to a narrow front bulkhead. The
bumper/skid plate, suspension block, nose plate and front bulkhead all come
together to form a very rigid assembly, to which the front suspension arms
mount to. The standard position of the suspension mount produces 25 degrees
of hinge pin angle in the front arms, but simply flipping the suspension
mount increases hinge pin angle to 30 degrees. The added flexibility of
having adjustable hinge pin angles means you have more options when it comes
to setting up your truck. Like the rear arms, a single replacement arm can
be used on either side.
Floating Axles –
While floating axles ride in bearings that are mounted in the nub instead of
the wheel, this moves the weight of the bearings inboard for extremely more
responsive suspension. The bearings are under less stress, and they’re
better shielded from the elements.
Steering Assembly –
Ball bearings provide smooth movement of the steering bellcranks, which are
mounted on the chassis at the same angle as the suspension arms. This
eliminates bump steer and produces more accurate Ackerman geometry
throughout the entire range of steering motion. The steering plate (center
link) features horizontally mounted ball studs, which mean the Ackerman can
be fine tuned by using shims behind the ball studs offering a nearing
infinite range of adjustments.
Captured Hinge Pins
– A simple button head screw captures all the outer hinge pins of the
Ultima RT5. The rear inner hinge pins are truly captured between the
suspension mounts, and the notched inner front pins are secured with a
setscrew through the front suspension mount. This means that the hinge pins
are much more secure and less likely to come loose.
Shock Towers – The
front shock tower is mounted as far back on the chassis as possibly, as are
the shocks, to keep the mass as low as possible. The rear shock tower is
also designed to keep a low profile, yet allow enough suspension travel to
ensure the best possible handling. The shock towers are molded from an
exhaustively tested composite, which is much more costly to produce than
shock towers made from woven graphite, but will also provide greater
durability.
Velvet Coated Shocks
– Kyosho is well known for silky smooth shocks and the new “Triple Cap”
shocks included with the new Ultima RT5 are no exception. The shock body
consists of three major components a top cap, velvet coated threaded bodies,
and a lower cap. The velvet coated shock bodies feature a threaded spring
pre-load collar for quick and easy adjustment. The threaded adjuster
features an O-ring that prevents the preload settings from moving, which
ensures consistent performance from start to finish. The lower shock cap
allows for quick and easy maintenance of the double O-ring seals.
Hard Rod Ends – The
rod ends feature a stronger material that is more durable and resists
contamination from the dirt. This means that the rod ends stay tighter and
are less likely to be damaged or separated from the ball stud in the event
of a hard crash.
Teflon Sealed Bearings
– Ball bearings are the standard for reducing friction and wear, and to
increase efficiency. It’s nice to know that the Ultima RT5 is equipped
with a full set of 18 “Teflon- sealed” ball bearings used throughout the
drivetrain and transmission to keep things running smooth.
Features:
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