Translations:Help:FAQ:Governor/2/en

Headspeed governor - What is this and what does it?

Using the governor function you can simply preset your rotor head speed from the transmitter. I. e. when you like to fly your heli at a head speed of 2500rpm, you set your throttle curve in idle 1 to a straight line at 62.5% in the radio. Then you just place your heli on the flight field, switch to Idle1 and the governor will spool up the rotor to 2500rpm. Then you can take off and fly and the rotor speed will maintain 2500rpm all over the flight, no matter what load condition the battery is or if your nitro motor will run lean. The governor will try to hold these 2500rpm as good as possible. When the load on the rotor increases, it'll increase throttle as necessary, when you unload the head and the head speed increases due to aerodynamic force, it'll decrease the throttle automatically. Typically this is a lot better than only controlling the motor with static curves made in the transmitter. Also you will get consistent results. Next time you fly, again you will get the exact same head speed. No matter you're using an older battery with slightly different voltage level or the nitro motor may run more rich or lean.

Also for electric helicopters the governor function is a good thing in case you use an ESC with bad head speed governing capability. Most (cheap) ESC do not have a very good built-in governor function or don't feature any governor function at all. For example with some ESC you may get tail pumping at some specific rpm ranges or very abrupt throttle inputs when the load on the rotor head changes. Here you can get good results with the BEASTX governor as besides observing the motor/head speed this will allow to give direct throttle input to cyclic/collective stick input. So it always will be one step ahead compared to a traditional governor function. Using a high priced ESC on the other hand, these typically have so good governor algorithms that an external governor is not required. Here the ESC has much better knowledge of what the motor is doing at the moment, what's the momentary current, voltage, etc. In this context we must admit using the BEASTX governor function probably will not give any performance boost.

In summary it can be said that if you are not afraid of the additional wiring and setup procedure using the BEASTX governor can give your heli a very consistent head speed governing at minimum effort. Of course if you think your ESC is working OK and that the governing is working to your satisfaction, there is no need to use the governor feature.

Especially for the nitro helicopters using the governor functionality of your MICROBEAST PLUS can be very handy as the unit necessary for this is already mounted to your heli. There is no need for an extra device. Just connect a speed sensor of your choice to the unit and after performing the setup procedure you will not have to adjust complicated throttle curves anymore. Just choose the desired head speed you want to fly with and set it up in the transmitter, MICROBEAST PLUS will do the rest - including soft start and autorotation bail out feature.

Please note the governor function can only be used in combination with a single line (single-wire) receiver (Spektrum Satellite, Futaba SBus, SRXL, PPM serial-wire, ...). Using a standard receiver is not possible.