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===Nitro RPM Governor - When receovering from an autorotation using the autorotation bail out function the throttle increases up to nearly full throttle and stays there===
===Nitro RPM Governor - When receovering from an autorotation using the autorotation bail out function the throttle increases up to nearly full throttle and stays there===
Nitro helicopters react very sluggish during rpm rampup. Especially when the clutch is worn out it can take a lot of time until the rotor gains full head speed while the motor already runs at full speed, trying to spool up the rotor. This will cause the RPM Governor to stay at full speed as it detects the desired rpm seems to be faster than the helicopter allows. So you need to prevent the throttle from opening completely during spool up by decreasing the Governor quick change rate (Parameter menu point K) to a value that represents the maximum speed the helicopter is able to ramp up the throttle.
Nitro helicopters react very sluggish during rpm rampup. Especially when the clutch is worn out it can take a lot of time until the rotor gains full head speed while the motor already runs at full speed, trying to spool up the rotor. This will cause the RPM Governor to stay at full speed as it detects the desired rpm seems to be faster than the helicopter allows. So you need to prevent the throttle from opening completely during spool up by decreasing the Governor quick change rate (Parameter menu point K) to a value that represents the maximum speed the helicopter is able to ramp up the throttle.
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===How to adjust Parameter menu point I (RPM Governor - Throttle response)===
Use menu point I to change the response of the RPM Governor. This determines how fast and hard the system will open or close the throttle when the rotor rpm changes. With ideal throttle response you get a very consistent rotor head speed - the head speed should recover quickly and definite but not hectic when loading and unloading the rotor head.
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* If throttle response is too low the main rotor may speed up immediately in unloaded conditions, e.g. when the helicopter is descening and the RPM Governor will only give soft throttle inputs when the head speed decreases.
* If the response is set too high on the other hand, the throttle may stutter audible when unloading the motor and/or the motor rpm will kick in very hard and overshoot after the rotor head was loaded and the rpm decreased, causing the tail rotor to turn due to the immediate load change.
The height of throttle response highly depends on factors such as heli size (blade size), motor power and performance and/or the throttle reponse behavior of the speed controller (when flying an electric heli). If you need to adjust the throttle response, we recommend to start with the lowest value and increase accordingly. Also you should use a lower head speed for adjustment as here you can see the effect more distinct.
Only increase the throttle response stepwise and make sure the throttle will not start to oscillate.
Note that with nitro helicopters high throttle response can cause the motor to quit when the throttle
is opened too fast. With electric helicopters changing the throttle very fast can cause the speed
controller to overheat and especially hard changes from unloaded to loaded conditions can cause incorrect
commutations of the ESC (depending on the type of motor) which can damage the ESC if this does not have
appropriate protection mechanisms.