| The Hyper 9
2.0 Pro Buggy is now stronger, faster and more stable. The many innovative
ideas of the Hyper 9 are now complimented by a longer thinker CNC chassis
and new longer and stronger front arms. On the performance side, the buggy
accelerates harder, corners faster, jumps and lands more stable then ever
before. |
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| Chassis
Balance |
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| The engine is toward
the center of the Hyper 9 do to a 40 tooth spur gear and the 13 tooth
clutch bell. The center drive line angles are also straighter, reducing
scrub on the joint pins. |
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| The engine was then
angled 25 degrees toward the center for four reasons. 1. Allowed clearance
between engine mount flange and center drive shaft. 2. Moved weight toward
center of chassis. 3. Lowered center of gravity. 4. Pulled pipe toward
center of chassis. All this combined with the asymmetric aluminum chassis
plate balances the buggy left to right with a half tank of
fuel. |
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| Ground
Clearance |
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| Ground clearance has
been something overlooked for years by most 1/8 scale designs. The Hyper 9
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 entering
and exiting corners. |
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| Gearing |
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| The buggy accelerates
and has greater top end speed because of the 11/43 gear combination at the
front/rear gear boxes and the 13/40 combination at the center
differential. The faster spinning center differential also reduces the
torque effect of the engine. |
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| Low Center of
Gravity |
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| Here is a list of items
on the chassis that has been lowered for a lower center of gravity;
steering servo, throttle servo, shocks, engine, radio box, center
differential, all brake hardware, shock towers, rear wing, air filter and
the fuel tank. |
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| Better Cornering and
Better Jumping |
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| The Hyper 9 has better
matching roll centers that make the buggy more consistent as the track
conditions change. The buggies reduced weight and high ground clearances
allows the buggy to jump farther (chassis does not scrub off speed on face
of jump) and recovers from landings faster (chassis does not bottom out as
hard). |
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| Front C-Hub and
Steering Knuckles |
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| 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. |
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| Note: The steering
knuckle is deceivingly strong for its size. |
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| Front Kick-Up and
Caster |
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| The chassis has a 10
degree kick-up with 20 degrees total caster. The bend in the kick-up is as
far forward as possible to increase ground clearance aft of
bulkhead.
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| Adjustable
Ackerman |
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| 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. The 2.8mm ackerman wire is much more reliable and tighter then a
plate with bearings. 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. |
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| Throttle/Brake
Linkage |
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| 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. |
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| Low-End Needle Adjustment
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| The low-end needle is very easy to
adjust, and in most cases easier than traditional buggy designs. The body
only has to be lifted a few millimeters and the needle can be seen through
the side window. You also do not need a long screw driver because the
carburetor is closer to the right side of the buggy. Another plus is the
idle stop screw is easier to adjust. |
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| Rear
Wing |
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| The rear wing mount is
a small block mounted on the rear shock tower and the formula style wing
is held on by four screws. This greatly reduces the weight and lowers the
CG. A more traditional wing mount is available as an option part
(OFN29032). |
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| Fuel
Tank |
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| The fuel tank has
filler inserts that screw down inside to allow the tank to be adjusted to
maximum capacity. The tank lid is designed to provide a perfect seal every
time it is closed even when the tank is hot or cold. This is due to the
newly designed spring touching only the middle of the self centering lid.
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| Sway Bar
Mounts |
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| Sway bars are held in
place by two set screws angled to allow for different diameter wires and
still eliminate slop. |
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| Miscellaneous |
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| The suspension arm
fingers at the outer ends of the front and rear lower arms are short to
eliminate flex. |
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| The differentials have
long lasting steel differential gears. |
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| Rear Toe is adjustable
from 2 to 6 degrees total. Rear anti-squat is adjustable from 1,2, and 3
degrees. |
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