FUTABA GY501 Instruction Manual page 3

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Thank you for buying a GY501 AVCS gyro.
Before using your new gyro, please read this manual thoroughly and use the
gyro properly and safely. After reading this manual, store it in a safe place.
FOREWORD
Up to now, movement of the tail from side to side due to changes in the
wind, flight posture, and other disturbances during model helicopter flights
was minimized by increasing the sensitivity of the gyro. However, a bad
effect is that the sensitivity may be increased too much so there was a limit
on how much the tail could be controlled. Changes in F3C rules add
forward and reverse flight aerobatics and demand various flight positions so
that controlling the position of the tail has become more difficult.
The GY501 gyro uses the Futaba AVCS system and makes it possible to
theoretically correct this movement. This increases stabilization of the tail
against disturbances. Since F3C contest fliers who use the GY501 gyro
together with a high response servo, of course, achieve high stability against
wind and other disturbances, it has a large effect also for helicopter novices.
•No part of this manual may be reproduced in any form without prior permission.
•The contents of this manual are subject to change without prior notice.
•This manual has been carefully written. Please write to Futaba if you feel that any
corrections or clarifications should be made.