Operation Manual

8.6. Helicopter mixers

8.6.1. Introduction

Safety note

Radio-controlled model helicopters are complex flying machines which are not easy

to control in the air. Operating a model helicopter without due care and skill, and

without a responsible attitude, represents a high-risk activity.

If you are a beginner we recommend the following:

• Ask for help from an experienced model pilot, club or model flying school;

• Ask for advice and help from your local model shop;

• Read as much as possible on the subject before attempting to fly.

Note:

The COCKPIT

is designed for helicopters fitted with a rotor head with a mechanical

collective pitch mixer.

Summary of the COCKPIT

’s helicopter facilities:

• Collective pitch - throttle mixer

When a helicopter climbs (increase in blade pitch angle = collective pitch in-

crease) the throttle setting must also be increased in order to maintain a con-

stant system rotational speed. This mixer is automatically activated when you

select the Heli model type (H).

• Idle up

Pre-set minimum rotational speed controlled by a slider (control E).

• Static tail rotor compensation

one mixer input for climb and descent.

• Tail rotor offset

Two tail rotor neutral points for normal flight and auto-rotation.

• Collective pitch trim

The hover point can be adjusted to suit the prevailing conditions by moving the

collective pitch trim. Throttle and static tail rotor compensation are changed

automatically in accordance with the trim value.

• Auto-rotation switch

Separates throttle from collective pitch (collective pitch - throttle mixer). A fixed

value can be set for throttle (motor idle for auto-rotation practice). At the same

time a different neutral position is assigned to the tail rotor (see tail rotor offset

above), and static tail rotor compensation is switched off. You retain full control

of the tail rotor.