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What is a gyro? A gyroscope is an electronic unit that senses motion and corrects for it. For example, if the wind blows
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How does it help in helicopter setup? A good gyro will totally eliminate the need for revo. mixing. The gyro will sense and
correct the unwanted motion for you, so you don’t have to spend time to get a complex curve operating properly.
Gyro sensor kinds: There are many different kinds of gyros. Early gyros were mechanical, with a spinning drum similar to
a child’s gyroscope toy. The next generation utilized a special type of crystal, called piezoelectric, which sensed the motion
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machines, or computer chips, sense the motion. SMM is far more accurate and less susceptible to inaccuracies caused by
temperature changes, etc.
Types of gyro responses:
• Normal: sense motion and dampen it (if the gyro rotates off course for 2 seconds, it corrects for 2 seconds).
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until the same rotation is achieved.
• Stick priority: a feature on most high-end gyros. The more input given on the channel the gyro controls, the less sensitive
the gain is automatically. This way, if you give a large input for a stall turn, for example, the gyro turns itself off and
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model straight. (If your gyro does not include stick priority, you can manually create it. Please see www.futaba-rc.com\
faq\.)
Choosing the right gyro for your skills, your helicopter, and your budget:
• Mechanical: some are still available. They are very challenging to set up and not as reliable as piezo or SMM.
• Non-Heading-Hold Piezo: these are now inexpensive gyros that are reliable and easy to set up. Some have dual rates and
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• Heading-Hold Piezo: Until recently, the cream of the crop. Expensive, and more complex to set up. Adds GPS-like
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• Heading-Hold SMM: 21st Century gyro technology. Computer chip technology. Expensive, easier set up, higher
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using specialized digital servos. Examples:
• GY401: Simpler set up. Ideal for learning aerobatics through 3D.
• GY502: Better centering than 401 for more advanced aerobatics. Ideal through Class III competition.
• GY611: Exceptional center. Extremely fast response time. Requires specialized servo.
GYRO
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gain, the more correction the gyro provides and the “softer” or less responsive the helicopter feels.) This function makes
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Adjustability:
• Plug the gyro’s sensitivity adjustment to channel 5 of the receiver. (not assignable)
•
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• Full switch assignability or may select
Cond.
option.
•
Cond.
option provides separate gyro settings, one for each condition, automatically selected with the condition. Allows
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• Each gyro setting may be set from 0 to +100 (
NOR
100% to
AVC
100%) gain, equating to ATV settings of -100% to +100%.
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Negative settings trigger normal mode; positive settings are AVCS mode.
• Larger percentages indicate more gain, or gyro responsiveness.
• Tail wagging or shaking indicates excessive gain settings. Turn down gyro setting until wag stops.
