Protech ZOOM 425 ccpm Specifications download pdf (Page 114)

ways:

• Replace the servo horn with a longer version

• Decrease the aileron and elevator mixing on the swashplate mixing menu. This will de-

crease your cyclic control, so this should be a last resort fix for this problem.

13.2.4.7. Check for binding

Perform the cyclic/collective pitch test again, and check for servo binding. If the servo is reach-

ing the mechanical limit of movement and emitting a buzzing sound, then it is binding.

You will need to fix this binding because the servo will draw a large amount of power when it is

binding, which can overload the BEC and the BEC may shut down. This will cause a loss of

heli control and probably a crash.

To solve the servo binding, you will need to enter the swashplate mixing menu and reduce the

aileron and elevator mixing to eliminate the servo binding. Ensure the aileron and elevator mix-

ing is equal after reducing the mixing values.

13.2.5. Cyclic setup (FP heli only)

Note

This setup only applies for FP helicopters. Skip this section for CP helicopters.

13.2.5.1. For transmitter mode 2 (US and Europe)

Move the RIGHT transmitter stick up and down. This should move the swashplate forwards

and backwards.

Move the RIGHT transmitter stick left and right. This should move the swashplate left and right.

13.2.5.2. For transmitter mode 1 (Asia and Europe)

Move the LEFT transmitter stick up and down. This should move the swashplate forwards and

backwards.

Move the RIGHT transmitter stick left and right. This should move the swashplate left and right.

13.2.5.3. Correcting the swashplate tilt

If any of these swashplate movements are reversed, then reverse the servo so the swashplate

moves correctly.

When the sticks are centered, the swashplate should be level.

The easiest way to check this is by holding the helicopter at eye level, then looking at a book-

case behind it. Align the main shaft with the edge of the bookshelf, then raise/lower the heli-

copter until the swashplate is at the same level as one of the shelves. You should be able to

easily tell if the swashplate is perfectly level or not.

13.2.5.4. Check for binding

Move the fore/aft and left/right cyclic to all extremes simultaneously, and check for servo bind-

Helicopter and Transmitter Setup

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Protech ZOOM 425 ccpm Specifications Page 114