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How to Align the Main Rotor Blades on a T-Rex 600

If you fly model helicopters for fun, you need to make sure the main rotor blades are aligned. Failure to align the rotors correctly could damage the helicopter or prevent it from taking off properly. Align's T-Rex 600 helicopter is easy to align as soon as you've determined how out of alignment the aircraft happens to be. This is a test that you can perform visually and should always be part of your pre-flight checklist.

Things You'll Need

Red tape or marker
Ruler

Instructions

- 1
  Wrap the end of one of the rotors in red tape, or make a thick red mark on the end of one rotor blade. This is a mark you'll be able to see from a distance and help identify that rotor when moving.
- 2
  Measure the two flybar rotors from the tip to the center of the seesaw flybar lever. Make sure these are even with each other, and shift the O-rings and push or pull the flybar if it needs to be adjusted.
- 3
  Turn on the helicopter and move the throttle up a little so that the helicopter blades start turning, but not so that it takes off. Don't touch any of the turning controls.
- 4
  Watch the red mark on the rotors. If the rotors spin flat, the craft is in alignment and doesn't need to be adjusted. If the blades tilt upward or downward, note which direction they are tilting in.
- 5
  Power down the helicopter and adjust the linkage bars attached to the servos. Pull them off the linkage balls, and twist the bars to lengthen or shorten them. Reconnect them to the linkage balls and retest the aircraft until the rotors are smooth.

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