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GYRO REVERSE SETTING TEST

When you have the gyro installed. You should test to verify the gyro reversing setting is correct. This is DIFFERENT than the reverse setting in the transmitter.  If you test flew the plane before the gyro installation you should NOT have to change the reverse setting in the Transmitter.  Moving the TX stick should still move the control surface in the normal direction.  The GYRO reverse setting (gyro direction) affecs which way it moves the control surface when you move the airplane.  I will add that after I power up any plane (or heli) with a gyro, I ALWAYS do a gyro test on each gyro controlled surface to verify the gyro is operating correctly.  In time, the gyro test will be much quicker as you gain experiance to be able to see without thinking that the gyro is going in the correct direction. Until then read carefully the instructions I have below on doing a test for each surface.



TESTING AN AILERON GYRO

Get behind the airplane.  Move aileron stick right. Verify the right aileron moves up and the left aileron moves down.  Move aileron stick left. Verify the left aileron moves up and the right aileron moves down. 
This is part of your normal Pre-Flight you would do with or without a gyro installed.
Verify the gyro is turned on via the Tx switch (if you have a remote gain connected and programmed).
Still from behind the airplane, Put a finger on the right aileron and pull the right wing up quickly. The right aileron should move up as your pulling the wing up. You should see the Left aileron doing the opposite movement.  In Rate mode, the aileron BUMPS it's movements when you move the wing then returns to center. In Heading Holde mode, the aileron will move and stay there until you move the wing back down.
NOTE: If you are doing your initial testing, 100% gain will make the Ailerons move more and make it easier to see the movements.
If the Ailerons fail this test, flip the REVERSE switch on the gyro to the opposite position, Cycle power and try the test again.
If you have a switch configuration that allows you to turn the gyro off, switch it off then verify that moving the wing does NOT affect the ailerons.


The following is a video showing the installation of a LABEL UP (Esky 704) gyro onto the Ailerons of a foam Hawksky. NOTE: This gyro is RATE MODE only and has no gain wire.
At 7:20 you will see the procedure for testing the reverse setting of the gyro.




TESTING A RUDDER GYRO

Get on the right side of the airplane just behind the wing. With the motor to the right and the tail on the left. Move the rudder stick right. The rear tip of the rudder should move towards you. Move the Rudder stick left. The rear tip of the rudder should move away from you.  This is part of your normal Pre-Flight you would do with or without a gyro installed.
Verify the gyro is turned on via the Tx switch (if you have a remote gain connected and programmed).
Still from the side of the airplane, Push on the tail with your left hand (yawing the plane to the right).  As you are pushing the tail away from you, the rear tip of the Rudder should move away from you even more (left rudder movement). Now Pull on the tail (yawing the plane to the left). As you are pulling the tail towards you, the rear tip of the Rudder should move towards you even more (right rudder movement).

If the Rudder fail this test, flip the REVERSE switch on the gyro to the opposite position, Cycle power and try the test again.
If you have a switch configuration that allows you to turn the gyro off, switch it off then verify that moving the wing does NOT affect the Rudder.

The following is a video showing the installation of a LABEL UP (GY48V)gyro installation onto the Rudder of a Piper L-4. At the beginning of this video you will see the testing of the reverse setting of the gyro.
 

TESTING AN ELEVATOR GYRO

Testing the elevator is similar to the Aileron test.  What I typically do to verify the gyro reversing is correct is to first set the gain up to 100%.  Then lift the tail quickly. As you lift the tail, the elevator should go up. If not, then toggle the reverse switch in your gyro (or if you don't have a reverse switch, you much flip it 180 degrees (point label to the opposite direction rotating it).  Think about what your test is doing.  Lifting the tail pitches the nose down, to compensate, the gyro should pitch the nose up, thus the upward movement in the elevator.  
Once you have it tested, go ahead and return the gyro gain back to say 30% for your initial flight testing.  

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