Century Helicopter Products Hummingbird V.3 Instruction Manual - Page 4

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Section 2a

MODIFYING THE SERVOS FOR INSTALLATION

4 & 5. (optional) Trim both servo mounting flanges from each

servo.

6. (optional) Cut the protruding portions from the bottom of

the servo case as pictured. This will allow the best fit in the

model. Note that the cut is made on the far end from the

servo lead.

7. (optional) After modifying the servo it should appear as

pictured.

8. Before entering section 3 you will need to remove the

pushrods from the swashplate of the helicopter.

Section 3

MOUNTING YOUR SERVOS

1. Insert the pushrod into the hole on

the servo arm farthest from the output

(10-12mm from center).

2. Place servo tape on the mounting

surface before mounting the servo.

3. Position servo so that the arm can

travel freely and the pushrod is straight

up and down.

angle

Modifica

Modification And Diagnostics Of The

Modifica

tion And Diagnostics Of The

Modifica

tion And Diagnostics Of The

Electronic Components (continued)

Servo and pushrod setup and

Swashplate

Adjustable

pushrod and

ball link

Servo horn

Servo Arm Retaining Screw

Servo Lead w/

Connector

inst

all

alla a a a a tion

install

inst

all

7. Turn the radio on with all sticks and

trims centered except for throttle. Make

sure the throttle is in the lowest position.

Use servo horns that have a hole 10-

12mm out from the servo pivot center and

place it as pictured (parallel to swashplate

and frame). Verify also that flybar paddles,

swashplate & servo horns are parallel to

each other and also 90 degrees to the

main shaft. You can adjust the lengths of

the pushrods by twisting the ball links

clockwise to shorten the length and

counterclockwise to increase the length.

The Ser

The Servo

Servo Arm/Horn/Wheel

Servo Output Shaft

Servo Mounting Flange

Servo Case

ready to

mount servo

tion

4. Once the mounting position of the servo is

determined carefully mount the servo to the mast

tower. If the servo has a label on the same side

that will mount with double sided tape, peel off

the label and clean the surface using rubbing

alcohol.

5. After mounting the servo place the plastic ball

link on the corresponding control ball on the

swashplate. Only use the large opening on the

ball link. (see below)

6. There are only 2 servos needed. When

mounted they should appear as pictured.

Ball Links

The correct side of the ball

link to mount has a larger

opening than the other side

and also has a lip in the

plastic around the opening.

Ball link closed end

Ball link open end with lip

Carefully remove

ball link from

swashplate ball.

Too much force

may break the

plastic balls.