Things You'll Need
Instructions
Verify that the helicopter stands evenly on a flat, stable surface. If the skids are out of balance, it may not impact the helicopter in flight, but it might impact how you see the helicopter's alignment later.
Detach the tail rotor and push the toothpick inside the hole.
Stand the two wooden blocks about an inch apart.
Place the tail rotor between the two blocks so the toothpick holds it aloft. Look at the tail rotor to see whether it's balanced. If one end tips toward the work surface, add layers of tape until the tail section is balanced.
Replace the tail rotor. Make sure it is attached properly and the same way it was previously.
Measure the two flybar paddles from the tip to the center of the rotor housing. If the two measurements don't line up, shift the O-rings slightly and adjust the flybars until they are evenly spaced.
Wrap one of the main rotor blades in a thin line of tape, or draw a thick red line in marker.
Power on the helicopter and controller. Push the throttle up slowly to start the main rotors spinning; don't touch the other controls. Watch the rotor blades from different angles. See whether the red rotor blade tilts upward or downward when it is supposed to be flat. If there is no unusual motion, the helicopter is in alignment.
Shut down the helicopter engine and power off the entire setup.
Disconnect the servo linkage rod nearest to the deflection. Rotate it slightly to adjust the length of the rod. Reconnect it and retest the aircraft by restarting the engine. If the helicopter is still out of alignment, readjust and retest until it is even.