the new Ultima RB5 electric racing buggy. It's a virtually
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 RB5 is simple - to win the next IFMAR World Championship.
The new Ultima
RB5 only shares rear hubs with the Lazer ZX-5 and a few common
hardware items, but the essential and distinguishing components
of the car, such as the chassis, transmission, bulkheads, shock
towers, suspension and the sleek aerodynamic body, are all new.
Each aspect of the car is specially designed and tested to
produce maximum performance. Likewise, the materials chosen for
this new Ultima are exhaustively tested - all with the goal to
create the ultimate no-nonsense competition car that's ready to
take on the world.
- The chassis plate is 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 or rear end of the car, which makes
maintenance and repair much easier. Designed to accept stick
packs and racing-style 6-cell matched packs, the RB5 chassis
features an adjustable battery mounting position that allows you
to shift weight bias to suit track conditions and your driving
- 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 handing. The
three-gear transmission features an internal ball differential
that uses standard 3/32-inch diff balls and 1/16-inch thrust
balls. The differential is also externally adjustable, and a
dust cover fits over the adjustment holes so the thrust bearing
lasts much longer. An injection molded gear cover is included,
which better fits the motor plate to minimize dust and debris
for longer gear life.
Suspension - The rear suspension arms are symmetrical
so a single replacement arm can be used on either side of the
car, 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 allows anti-squat adjustment. The rear wheel
hubs feature three lower hinge-pin holes, which allow
modification of the ride height with minimal disturbance of the
suspension geometry. Vertical ball studs for the both the inner
and out rod ends of the upper link mean the rear suspension
geometry can be fine-tuned with shims.
Suspension - Longer, straighter and 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. The standard position of the suspension
mount produces 25 degrees of hinge pin angle in the front
suspension arms, but simply flipping the suspension mount
increases the 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 car. Like the rear
arms, a single replacement arm can be used on either side of the
hubs make high-speed handling a dream, while floating axles ride
in bearings that are mounted in the hub instead of the wheel
This moves the weight of the bearings inboard for more
responsive suspension, the bearings are under less stress, and
they're better shielded from the elements. This means the front
wheel bearings last longer and run smoother. The front track
width is also easily adjusted, which means the amount of
steering response is easily increased or decreased for track
conditions and driver preference.
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 Ackerman
can be fine tuned using shims behind the ball studs, offering a
nearing infinite range of adjustment.
Hinge Pins - A simple button head screw captures all
the outer hinge pins of the Ultima RB5. 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. Likewise, 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.
Aluminum "Triple" Shocks - Kyosho is well
known for silky smooth shocks and the new "Triple"
shocks included with the Ultima RB5 are no exception. The shock
body consists of three major components - a top cap, threaded
body, and a lower cap. The aluminum 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
quick and easy maintenance of the double O-ring seals.
Body - no less than ten versions of the new body for
the RB5 were thoroughly tested to maximize performance and to
ensure that you have the best-looking car on the track. The
entire R&D team as well as the factory drivers were involved
in the development, and the finished product is the
best-performing body ever used on a 2WD buggy according to the
hard with the bulkhead of the material of the [me] and
the suspension mount of the soft and others pot,
compatibility gap absorptivity and the steering wheel
where the rigid impression is high. In addition in the
wheel design which installs the bearing in hub side,
tire exchange at brief is possible.
which moves well (the suspension) with, being smooth,
the oil damper of 3 block constructions which do not
have the being off-center of the shaft, low actualizing
the running which at ~ high-speed all catches the land.
The roll doing securely even with the corner, grip it
does, promising the maneuverability which is superior.
adhere to center shaft position, the mission which makes
the motor and the axle approach, acquiring high
maneuverability. Furthermore you adopt teflon sealed
type for all bearing, actualizing high durability and
private body in order all the speed limits and the
aerodynamic effect which is made securely the various
behavior times to show, throwing the original device.
The dent before the front screen actualizing the high
result e.g., the down fourth which is effective to the
front is offered.
install in the doubles ripper clutch, combining this car
private shoe. Going hand in hand with the setting which
makes secondary reduction gear ratio high, while the
sharp pickup the tripod kettle, actualizing smooth
traction transmission. Showing the maneuverability which
is superior in all scenes.
maintenance characteristic which can be accessed
important place directly with the chassis which was
divided into 3 parts, actualizing the doing easiness of
setting. With combination with the 12T class which is
the recommendation motor, the controller bull announcing
Molded Carbon Composite
adjustable ball diff
Seales (Trans), metal shielded
threaded aluminum, oil damped
||540 size (Sold