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Revolution Mixing
Revolution mixing applies rudder input based upon your throttle / collective stick position. This helps to
compensate for changes in torque being applied to the main rotor, which will make the helicopter spin.
Today's gyros do a very good job of keeping the tail steady, so there is rarely a need to use this feature.
If you have a headinghold gyro, revolution mixing must be disabled for it to function properly. Even if
you plan to use revolution mixing, it is best to disable it during the initial setup of your model. Navigate
to RU > RV.H, then RV.M, and RV.L. The lowest point is RV.L, and the highest point in RV.H. The
flight mode you are modifying is listed in the lowerleft section of your screen, under "FMode." Use
the
button and up / down
F-Mode
for each flight mode and all three points.
Tail and Remote Gain Settings
Proper setup of your rudder linkage is essential for proper control and to ensure your gyro is able to
perform to the best of abilities. With your rudder stick centered, the rudder servo arm should be at 90
degrees to the linkage, and the pitch lever that the linkage connects to should be at 90 degrees for most
helicopters. Consult your helicopter's manual to verify this.
Many gyros have an additional servo lead that plugs into the 5
hold/rate modes of the gyro with your transmitter. Each flight mode has two settings, controlled by the
twoposition "Gyro" switch. If your gyro has the remote gain feature, navigate to G > GYR. The flight
mode you are modifying is listed in the lowerleft section of your screen, under "FMode." Use the
button to scroll through your four flight modes and set your various gain settings. Now toggle your
Mode
"Gyro" switch to the other position and repeat the process.
Rate vs. HeadingHold Gyros
A "rate" gyro is a simple and lowcost gyro that senses the approximate amount that
your tail drifts, and responds with an estimated control input to counteract the drift. It
does not lock the position of your tail, and will allow it to weather vane.
A "headinghold" gyro is more advanced and does a much better job of keeping the
tail steady. A simple way to think of how it works is to imagine that it notices a drift,
calculates how much it drifted, then applies enough control input (if possible) to return
the tail to the commanded heading. Your tail will not weather vane, so you must
coordinate your turns with both cyclic and rudder inputs.
keys to scroll through your four flight modes and zero all values
arrow
th
channel to control the gain and heading
F-
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