OFNA
Hyper 9 - 1/8th 4WD Performance Nitro
Buggy
PART #14350 - Pro Kit
Welcome the newest competitor
to hit the racing circuit: The Hyper 9 Pro!
The Hyper 9 is a completely new design from the ground
up with many new and innovative ideas. Several criteria
were set and met in this new design. Weight was number
one and always a concern with every part designed for
the buggy. Next, in order of importance, was side to
side balance, low center of gravity, ground clearance,
all on as narrow a chassis as possible. On the performance
side, the buggy had to accelerate, corner, jump and
land better than any other buggy on the market. In this
article I will reveal many of the new and secret design
features of the Hyper 9.
Technical
Data
Length:
19.5
in/495 mm
Width:
12 in/305 mm
Height:
7.4 in/190 mm
Wheel
Base:
12.6 in/322 mm
Weight:
7.27 lbs/3300 g
Features
Extremely Low Center of Gravity
Entirely New Suspension Geometry
Engine Tilted 25 Degrees Toward
Center
14mm Threaded Hard Coated Shocks
Low Profile Dual Stage Air Filter
Proline Protoform Crowd Preaser Body 2.0
Lunsford Titanium Turnbuckles
Proline Crime Fighter Tires
Proline V2 Wheels & OFNA PL Inserts
Lay Down Steering & Throttle Servo
Low Profile Radio Box Integrated into
Stone Guards
Steel Internal Diff Gears
Front & Rear Differentials
3 Adjustable Ackerman Positions
And Much, Much, More...
Low Center of
Gravity
The steering servo, throttle servo, engine,
radio box, center differtial, all brake hardware,
shock towers, rear wing, air filter and the fuel
tank have all been lowered on the chassis for
an overall lower center of gravity.
Front C-Hub and
Steering Knuckles
The C-hub and steering knuckle has been reduced
in size and weight. The kingpin axes are directly
in the center of the front tires. This reduces
the shock on the steering servo when hitting rocks,
holes and pipes. Front bump-steer has been eliminated
with longer front tie rods and better alignment.
Full
Down Travel
Mid
Travel
Full
Up Travel
Front Kick-Up
and Caster
The chassis has a 10 degree kick-up
with 20 degrees total caster. The bend in the
kick-up has also been moved forward to increase
ground clearance aft of bulkhead.
Ground Clearance
Ground clearance has been
something overlooked for years by most 1/8 scale
designs. The chassis has been shortened for
clearance front and rear while keeping the same
wheel base as the Hyper 8.5. The bend for the
10 degree kick up in the nose has been moved
forward as much as possible to increase clearance.
The aluminum chassis plate has been reduced
in size, cut on all four corners, and the side
guards have been angled up for extra clearance.
This is especially important when the chassis
leans and squats while exiting a corner.
Adjustable Ackerman
The ackerman is a very important
adjustment and sometimes overlooked by most
racers. The Hyper 9 has three ackerman positions
for steering from mild to wild. The ackerman
is adjusted by changing the ackerman wire in
the center of the servo saver. While I am on
the subject of the ackerman wire, I found aluminum
ackerman plates with bushings and screws bend,
brake and fall apart. I found that a 2.8mm wire
to be much more reliable, tighter and more consistent.
I knew people were going to think the wire was
cheap, but the performance and reliability proved
to be much better. A great example of when simple
is better.
Throttle/Brake
Linkage
The throttle/brake
bellcrank is angled 25 degrees inline with the
carburetor so no binding occurs. The bellcrank
also allows the servo to be laid down and moved
forward for better weight distribution. The
brake linkage is a very simple wire with a z-bend,
not a bunch of little parts held together with
bolts and nuts. Brake bias is very easily adjusted
with a nylon nut on the threaded rod end. Another
example of when simple is better.
Front C-Hub and
Steering Knuckles
The C-hub and
steering knuckle has been reduced in size and
weight. The kingpin axes are directly in the
center of the front tires. This reduces the
shock on the steering servo when hitting rocks,
holes and pipes. Front bump-steer has been eliminated
with longer front tie rods and better alignment.