Protech ZOOM 425 ccpm Specifications download pdf (Page 122)

curve should be:

• Five point throttle curve: 90-90-90-90-90

• Three point throttle curve: 90-90-90

13.5. Tail rotor setup

13.5.1. Tail belt tension setup

This only applies if your heli has a tail belt, obviously.

The tension of the tail belt should be set according to your flying style:

For beginners and light sport flying, the tail belt tension should be firm but not loose. This will

decrease friction and increase your flight time and tail belt life.

For aerobatic flying, the tail belt tension should be somewhat tighter. This will increase friction,

decrease flight time and tail belt life, but will prevent the tail from slipping during hard man-

euvers.

13.5.2. Tail rotor pitch servo direction setup

Note

For this step, disconnect the motor wires from the ESC This will prevent the motor

from accidentally spinning.

Do not rely on the Throttle Hold function. The tail servo should be in the middle of its travel

range when the tail pitch lever is also in the middle of its travel range. If this is not true, then

adjust the linkages until the midpoints are matched.

13.5.2.1. For heading hold gyros

• If you have an ECO 8, when you hold the heli and turn it, the heading hold gyro should

push the tail pitch lever lever to the BACK.

13.5.2.2. For all helis

• If your tail rotor is on the right side of the boom and you push the rudder right, the tail

blades should increase in pitch.

• If your tail rotor is on the left side of the boom and you push the transmitter rudder left, the

tail blades should increase in pitch.

The tail pitch control servo should be able to move the tail pitch control lever all the way from

one limit to the other with about 120-150 degrees of servo arm travel.

If the servo needs more than 150 degrees of travel to reach both limits of the pitch control

lever, then replace the servo arm with a longer one.

If the servo needs considerably less than 120 degrees of travel to reach bot limits of the pitch

Helicopter and Transmitter Setup

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Protech ZOOM 425 ccpm Specifications Page 122