This is what I use to set up my chopper,using this lazy susan I was able to set up the chopper from workbench to flying without the need for any adjustments incl revo, gyro etc.
It is made simply using an old 540 motor with the brushes removed and then clamped in a work mate,the base is just a wooden board that is epoxied to the shaft of the 540 motor.
It is easy to make and use and takes all the guess work out of adjusting your settings for a perfectly trimmed chopper.
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