ABC stands for aluminium, brass and chrome. The piston is made of aluminium which has little heat expansion and light weight. The cylinder is made of brass

with a chrome-plated running surface.

Axle leg

This is where the wheel axle turns. The steering arms are located at the front axle legs.

Steering knuckle pin

Steering axle of the wheel. Connects the axle leg so that it is pivotable with the axle leg support (between top and bottom control arm).

Spindle

The axle onto which the wheel is screwed and around which the wheel turns.

Ackermann effect

To adjust the progressivity of the steering angle of the wheel inside the curve (Ackermann steer angle), the steering links can be reset to other steering points

both at the steering arms and at the steering plate.

Chassis

The "frame" of the vehicle, strictly speaking only the bottom support plate.

CVD drive shaft

A shaft which on one side engages the attachment on the differential with a steel pin and which on the other side is connected to the axle without tolerance via

a cardan joint, leading to low wear. In this way, the wheel can be actuated even at a great steering angle (strongly angled shaft).

Shock tower

The upper end of the shock absorbers of an axle on the right and left is screwed to the shock tower at the front and at the rear. The shock absorbers are thus

interconnected via the shock tower.

Differential

Differential gear. Equalizes different revolution speeds, e.g. between the wheel on the inside of a curve and the one on the outside.

Throttle stop screw

Regulates the minimum air supply to the carburettor in idle speed.

Receiver

Receives and "translates" the control signals of the remote control (direction and intensity) for the servos.

Fail-safe

Electronic circuit which moves the connected servo to a custom position when the radio contact is interrupted (e.g. when the range is exceeded, in case of a

transmission error or low voltage of the receiver battery). Once the radio contact is restored, the servo responds to control signals as usual again. In case of

low voltage, the servo position remains unchanged.

The fail-safe function can be integrated in the receiver and can as well be inserted between the receiver and the servo as an additional component.

Throttle/brake servo

This servo controls the carburettor slide as well as the disc brakes.

Transmission

Transmits the rotational speed of the engine in the drive section to the rotational speed of the driven wheels. The transmission ratio (rotational speed of engine/

wheel rotation) provides information about the final speed and the torque.

Main jet needle

Regulates the fuel supply to the carburettor.

Steering servo

Servo motor that carries out a mechanical control function via a lever. This servo steers via the steering links. A servo saver integrated into the servo control

lever protects the servo from damage that can be caused by hard shocks to the wheels via the steering links at the servo transmission.

Air filter

The air filter is made of foam. It prevents dust or dirt from entering the carburettor or the engine through the suction hole.

Oil pressure shock absorber

The shock absorber consists of a coil spring with a piston in an oil-filled cylinder running up and down at the centre. The coil spring is supported by a plate on

the end of the piston rod and a distance ring on the outside of the cylinder. Spring preload can be adjusted using distance rings of various thicknesses. The

spring absorbs the travel of the axle halves when travelling in uneven terrain. The bounding and rebounding is dampened by the piston moving through the oil.

By selecting different dampening oils, the dampening properties can be varied. The shock absorber is mounted between the shock tower at the top and the

lower control arm. Suspension travel is limited with the help of a plastic sleeve.

Control arm

Full-floating axle transverse to the direction of motion, connects the wheel suspension (spindle, axle leg and steering knuckle pin) with the chassis:

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