iKarus Profi Micro Gyro Anleitung Seite 5

• Now adjust the pushrod to receive approximately 6 degree positive pitch on the tail rotor blades. This is about
the tail rotor setting for stable hovering. The drawing below will offer help.
Servo Lever Length
• Observe the tail rotor slider while you slowly move the control stick back and forth. If the slider does not move the
full way on the tail rotor shaft, the lever needs to be longer. On the other hand, if the slider experiences a mechanical
resistance, the lever arm needs to be shorter. After this correction, check again the neutral position and, if necessary,
change the length of the pushrod and repeat the test until the slider moves all the way back and forth without any
hindrance at the end points. Many helicopter models have different control distances (positive – negative) for the
slider and therefore do not allow a uniform throw left and right. Try to reach a good compromise by adjusting for the
largest possible way.
Connecting the Gyro
• Connect the gyro with the receiver and the tail rotor servo with the gyro. The gyro leads to the receiver are marked
"RX Rud" and "RX Gain". Plug the servo lead directly into the gyro receptacle "Servo". Now switch on first the trans-
mitter, than the receiver and do not move the model for about 5 seconds.
• If your radio or receiver do not feature enough channels you may not be able to use the servo lead for sensitivity (RX
Gain). Secure the lead not to be colliding with any moving parts of the helicopter mechanics.
Operating Direction of the Servo and Gyro
• Now check the operating directions. First we set the servo direction that the tail rotor slider moves in the direction
to control the nose of the helicopter to the left when giving left stick (see drawing).
• Now move the helicopter clockwise in a jerky manner. The tail rotor servo has to move the tail rotor to the left. If this
is not the case, reverse the gyro direction (place the gyro on its head).
On command "rudder On command "rudder
left" the leading edge
of the tail rotor blade
moves to the outside!
Gyro Adjustment
The gyro sensitivity can be changed either on the gyro potentiometer itself or via an additional channel on your radio
system. In addition the gyro features a Limit and Delay function. These are used to electronically adjust a mechanical
throw.
Gyro Sensitivity without Additional Channel
If the lead "RX Gain" is not plugged into the receiver, the gyro electronic is using the setting of the "Gain-Delay"
potentiometer. In center position "50" the gyro effect is off.
On command "rudder On command "rudder
right" the leading edge
of the tail rotor blade
moves to the inside!
6°
6°