SER410001 Serpent Serpent S120 1/12th Scale

Serpent are pleased to introduce the S120, the first entry into the resurgent
1/12th scale pan car class. Made using high quality components throughout, Serpent
has worked within the confines of the scale and class rules to produce a unique,
high performance and fully adjustable chassis.

Specifications:

• Class: 1/12th scale
• Purpose: Competition pan car
• Chassis: 2.5mm carbon fibre, 4-cell, CNC machined
• Rear axle: Graphite shaft with ball differential
• Drive system: 2wd direct drive to rear axle
• Shock absorbers: Central oil filled shock absorber and lateral monoshock
• Wheel base: 195.5mm +/- 0.5mm
• Track-width front: 163mm +/- 3mm
• Track-width rear: 170.6mm
• Adjustability: Front Camber, Caster, Front Toe, Track width, Rear ride
  height, T-bar stiffness and Roll centres
• Weight: 840g – 4 Cells incl. BL system (varies depending on equipment used)
• Instructions: Full colour instruction manual and reference guide
• Not included: Motor, Batteries, Speed Controller, tires, body, steering
  servo, radio equipment

Features:

Front end
The front end of the car features 11 different adjustments to help you get the
most from your car, all of which are easy to adjust and measure. Fixed lower
suspension arms are themselves damped by the central strut which uses rubber
o-rings to take up the flex in this area, while the grey anodised aluminium
front upper wishbone mounts are available in different caster angles, the car
being supplied with 6 degree versions as standard. With the steering block king
pins spring loaded, the cornering forces are channelled through the upper wishbone,
which enable the car to corner at high speeds.

Rear motor pod
One of the most unique features of the S120 is the rear motor pod, which has
been machined from a single block of high quality aluminium. This, combined
with the design of the pod, ensure that its perfectly aligned and extremely
stiff, meaning that all cornering forces are absorbed by the cars 2 shock absorbers.
This motor pod is also extremely strong and is therefore resistant to crash
damage and tweaking that can come from a heavy impact. It has also been designed
to accept all of today’s brushless motors, with enough space to mount the sensor
and power cables.

Tweak station
To help tweak the car, as well as adjust the tension on the rear pod, the S120
features a tweak station that allows simple tweak adjustment through the use
of grub screws that have been set in spring steel blades. This system allows
you to not only tweak the car but gives the racer to ability to adjust the flex
tension. Offering a wide range of settings, they can be easily adjusted on the
track through a single screw that is accessed through a slot in the bottom of
the chassis plate. The front of the tweak station also doubles up as a mount
for the supplied carbon antenna rod.

Monoshock
Another very unique feature of the S120 is its laterally mounted floating monoshock
which dampens the flex between the chassis and the motor pod. Mounted using
ball joints from the top of the rear motor pod, both ends of the shock shaft
are attached to the top of the rear carbon body mount plate on the chassis,
and thanks to its design even the smallest of movements between the front and
rear of the car is easily absorbed. This system plays a big part in how the
car turns into a corner which can be adjusted through the use of different oils
and shock pistons.

Central shock absorber
To aid rear traction under acceleration and to absorb bumps, the S120 sports
a centrally mounted shock absorber. Supplied with a soft blue spring, the pre
load of which can be adjusted, the front mount of this shock absorber is used
for adjusting the rear down stop and range of movement between the chassis and
motor pod.

Rear ball differential
The S120 comes supplied with a durable and high performance ball differential.
Easily adjusted by a plastic nut, accessible through the right rear wheel, the
diff uses high quality steel balls and plates and is supplied with both suitable
silicone and graphite grease for use during assembly and maintenance.

Rear axle mounts
The lightweight graphite rear axle is mounted on bearings that sit within eccentric
composite inserts that allows the user to ability to quickly and easily change
the rear ride height of the car simply by changing between inserts. The kit
comes supplied with all 9 inserts which range between 0 and 4mm, each differing
by 0.5mm and all are reversible for an even wider range of adjustment.

Servo saver
The S120 comes supplied with a high quality miniature servo saver, which through
the use of orange anodised shims, has adjustable Ackerman. Further to the servo
saver, the car comes with aluminium servo mounting posts that feature an offset
mounting hole in the base giving them a greater range to accept a wide variety
of servos.

Battery mounts
On the S120, the cells can be mounted in 2 different positions by simply changing
the composite battery insert mounting position. Attaching it to the front or
rear of the slot means the cells can move by 4mm, perfect for adjusting the
cars weight distribution.

Body posts
For securely mounting the body shell to your S120, the car has strong plastic
body posts front and rear. All 4 posts are supplied with orange anodised adjustable
collars to precisely adjust the body’s height and the posts are supplied extra
long to allow the user to cut them to their own preferred length. The front
body posts have also been designed to help protect the front of the carbon chassis
from splitting in the event of a heavy front impact.