This is the Futaba GY520 I just installed on a Blade 400. This is a night and day difference from the stock gyro. Once you set up the gyro which includes servo type, travel limits, center, and compensation direction, gain, and set your transmitter to the correct values.. The tail holds like a rock!! Im even using the stock EFLFRDS75H digital servo that came on the Blade and it holds excellent. I am getting some tail bounce back which is either because the servo is to slow OR I need to adjust the delay which requires the usb dongle.
