The Natrix 748 TQ 200mm car produced by Serpent in 1/10 scale Touring Car series AWD drivetrain assembly kit, is classified in R/C Models - On-Road - Touring Cars - Nitro Powered
Serpent Natrix 748 TQ 1/10 scale 4wd gaspowered 200mm car 4wd, belt-drive,
new 748 gear-differentials front and rear, Centax TM clutch, new XLi 2-speed
gearbox, 75cc tank, chassis 7075-T6, carbon radioplate and shocktowers, RCM-SS
shocks, ball-raced anti-roll bars, fully adjustable.
- Class: 200mm 1/10th Scale 200mm
- Chassis: 3mm aluminum, 7075 aerospace quality, CNC machined
- Suspension: Independent double wishbone suspension
- Radio plate: 2.5mm carbon fiber, CNC machined
- Shock absorbers: RCM SS shock absorbers
- Fuel tank: 75cc design
- Drive system: 4wd through kevlar reinforced timing belts
- Clutch system: Centax-True Motion clutch system
- Front axle: Gear Differential 748
- Rear axle: Gear Differential 748
- Gearbox: Lightweight SL6 2-speed with interchangeable fine pitch gears
- Weight: 1.595kg (depending on radio gear)
- Max. speed: 105km/h +
- Acceleration: 0-90km/h 3.0 seconds
- Instructions: Full color instruction manual, reference guide
- Not included: Engine and pipe, body, radio equipment, battery pack, tires
Symmetrical chassisplate for even flex and torsion, in 7075 T6 aluminium, anodised
and laser engraved. Chamfered edges for more ground clearance when cornering
and countersunk holes. Central slots to mount weight, which can slide into the
right position and then secured.
The 2mm carbon fibre radioplate has multiple functions. It holds the fueltank
in place which is mounted on 3 alu posts in rubber. On the right hand side
the receiver mounts to a nicely shaped carbon fibre plate that connects to
the radiotray, sqeezed in right between belt and tank. The radioplate sits
again lower on the car , for lower center of gravity.
Central Flex system
The rear section of the radioplate incorporates a nice flex-control system.
It consists of 2 machined aluminium parts. The lower one connects to the radioplate
supports an the upper one with screws to the upper alu plate and radioplate.
You can either run the 748 rigid with flex . The optional ball-bearings and
screws are sold seperate. Testing has shown that flex in the center rear of
the car has the most effect and reacts most predictable as wel.
748 servo holder
A new composite servo holder is designed to have both servo closer to the
center line of the car and as low as possible. The 2 lay-down servo?s are
seated very close together and mount in a very efficent and easy way. The
holder mounts to the radio-tray.
The throttle / brake linkage is same style as used on the 977 1/8 car. A pivot-lever
system with an ingenius ball-cup system to the guide the wire and have almost
friction free action.
748 receiver box
The new composite receiver box is small but holds and protects the most common
modern receivers easily. The antenna mounts to the top. The box is securely
fastened to the radioplate with a nylon bracket . The box has been moved as
much to the inside as possible. On the radioplate a small holder is fitted
to accept the plugs of the battery, to act as on/off ?switch?.
Carbon fibre battery-holder positioned between the tank and pipe, for the
best weight balance. The battery is easy to strap down with tape to the bracket.
Spacers can be used to mount the battery higher or lower depending on the
battery you plan to use.
Lower and longer durable 75ccm nylon fueltank with transparent material to
easy see fuel-content. Large springloaded quick-fill cap with seal with large
tank opening for fast and easy refills. The bronze sintered filter will keep
fuel clean and make sure tank will empty till last drop if needed. Fueltank
sits very low in the car for low center of gravity. Fueltank is mounted with
clips on 3 alu posts with rubber buffers.
SuperShort RCM shocks
Coated threaded shockbodies in high quality aluminium. Supersmooth o-ring
/ bushing package, to guide and seal the spring-steel piston rods. Precision
moulded pistons included in 3 types. Threaded pre-load shocknuts in alu with
o-ring inside. Light but strong nylon spring-cups. Selected, matched and paired
shockabsorber springs with color coding.
Front bumper and bodymount
Front bumper with aerodynamic effects and excellent protection. Some parts
of the lower bumper can be cut open to create more steering. Medium or small
foam bumper pad scan still be fitted as optional. The upper carbon fibre bodyplate
mounts to the front bumper with alu post and secures the front bdyposts
Superlow 3.0mm carbon fibre shocktowers with 3 positions for upper shockmounting.
In the centre you can mount the 3rd bodypost as needed.
A compact and superlight structure of topquality aluminium parts consist of
top-brackets, L and R equal bearing brackets, lower suspension bracket front.
The open style design allows for very fast parts exchange as needed, like
belt, diff or anti-roll bar.
Strong long double A-arm suspension with aluminium pivotballs, which pivot
in light nylon cups. Hard type composite arms. The arms pivot on the inside
on springsteel pins. The pivot-inserts are used to change rollcenter. Small
grubscrews mount in the upper bracket to control downstop. Easy to access
and change ride height, front width, toe-in, caster and camber.
Very strong composite steeringblocks with 2 ackermann positions, L and R use
the same . The steeringblocks feature inserts, which allow to change the kingpin
inclination to a leading or trailing position. The steeringblocks also allow
use of the optional carbon fibre aero disks to be mounted for less flex and
a more direct steering feel.
Wheelaxles / cvd
The spring-steel wheelaxles are seated in high speed bearings. The light and
durable spring-steel cvd?s bring all the power to the front wheels. Wheels
are mounted to orange anodised high grade aluminium hex-adaptors using flanged
Anti-roll bar front
The ballraced wire type anti-rollbar in the front is really easy to access
and change for other type or thickness as needed. The anti-roll bar is linked
to the lower a-arms with a unique pivotball/cup system, which provides direct
and smooth operation and is easy to set and adjust.
Servo-saver / steering
The new lowered centraly mounted steel servo-saver post fits the spring-loaded
ballraced servo-saver system and steering. The inserts allow 2 ackermann settings.
Due to the open design the linkages with L/R threading can be reached easily.
The whole system allows for very precise steering and minimum bumpsteer.
Middle shaft holder
Machined 2 piece aluminium middle shaft holder, which securely holds the spring
steel middle shaft, and doubles up as holder of the pipe-mount.
Very rigid but open rear end design with a composition of machined alu brackets,
allowing for easy maintenance. The differential brackets, L and R equal, are
toothed and seat the excentric bearing holder, which allow for setting belttension.
Its very quick and easy to mount a differential and or replace a belt. The
machined aluminium lower suspension brackets have roll-center inserts with
3 positions to choose from. The rear bracket is the narrow V1 version.
The 2-speed gearbox shaft holders, double up as anti-roll mounts, and brake
system basis. All topquality machined parts with anodising and laser-engraving.
the low mounted brake system with superlight disk allows for smooth and even
braking, and the open system avoids overheating. The ball-raced excenter and
lever gives a very smooth and direct brake-feeling.
Rear carbon shocktower and camber bracket
The low 3.0mm carbon shocktower has 3 upper mounting position for the shocks
and it mounts the body-posts. The camber bracket offers 8 positions to choose
from, 4 inner and 4 out holes. The shocktower is prepared to mount the extra
body-protectors, which are optional.
The Hard lower rear composite arms together with the updated uprights create
a wider set-up sweet-spot with more grip and more steering. The upper camber
rods connect to the carbon camber bracket with 8 mounting positions for roll-center
and the camber rod is easy to access and has L/R threading for fast changes.
The aluminium pivotball system allows for fast changes in width and toe-in.
On the lower inside the wishbone pivots on springsteel pins, which seat with
roll-center inserts in the anodised alu suspension brackets.
Lower rear wishbones
The hard composite lower wishbones feature a mounting position for the anti-roll
bar linkage which moves the link position more outside. Its also offers a
mounting position for an optional carbon shock-mount bracket, to move the
lower shockmount position further out, but for the default set-up its not
needed. By placing the lower shock further out, you will get even more steering
Uprights / wheel-axles
Durable medium type composite uprights, which seat the wheel-axles bearings.
The upright offers the mounting position for the steel camber-rod with L/R
threading. Rolll center chnages can be made on top of the upright with shims.
The upright can be mounted with the optional carbon fibre aero disks for more
rear grip and straight line stability.
Wheelaxles and driveshaft
The durable spring steel wheelaxles combined with spring steel driveshafts
bring the power from the gear-diff to the wheels. Wheels are fitted on high
grade anodised alu wheelhex adaptors and secured with flanged wheelnuts.
Anti-roll bar rear
The ballraced wire type anti-rollbar in the rear is really easy to access
from the top and change for other type or thickness as needed. The anti-roll
bar is linked to the lower a-arms with a spring-steel rod.
Compact, durable and lighter gear differential. Precision moulded steel gears,
2 small 14T and 2 large 28T ones. The very durable and light spring steel
lightened diff-adaptors connect to the driveshafts. Front and rear geardifferential
share the same internal parts.
Spring steel, light and very durable CVD?s used in the front. Precision mounted
hard steel pins
Spring steel, light and very durable dogbones used in the rear. Precision
mounted hard steel pins
Precision moulded super-true pullies, which feature holed sidewalls to let
debris move out easier. Light and durable.
Low friction Kevlar reinforced belts with fine pitch. Longlasting and smooth.
Ball raced belt-tensioner, machined from aluminium and can mount on top or
below the radioplate.
Gear-box SL6 - Xli
The well proven SL6 gearbox has been redesigned and lighter. Smaller bell,
adaptor and shoes reduce overall weigth and rotating mass, so lower intertia.
Durable and longlasting gears. High quality bearings. Very grippy smaller
springloaded 2-speed shoes, easy to set.
True Motion Centax clutch
Serpent invented the Centax clutch in the mid 90-ties, and all brands followed
it. Small improvements are found to make the original system even better.
The True Motion Centax has a flat flywheel, and the taper part on the pressure
plate. This allows the flyweights to work even better. The hard anodised aluminium
flywheel has 4 holes to have easy access to keep the flywheel in position
when setting the pre-tension. The flyweights are made of topquality teflon
and feature an additional hole to use grubscrews to make them heavier. The
red friction clutch shoe is very grippy, and works excellent with the steel
clutch housing. The hard anodised gears screw onto the threaded steel bell.
The light machined and anodised engine mounts perfectly seats the engine,
well alligned with the gearbox. Small adjustment can be made to move the engine
closer to the gearbox.