Ethos v1.5.7 and X18, X20 series User Manual
Throttle
For the throttle we will leave the Input on the throttle stick. We do not need rates or
expo, but we do need a safety switch so that the motor will not start unexpectedly. This
is extremely important, because model engines and motors can cause serious injury or
death.
Throttle cut
Throttle cut provides a throttle safety latching mechanism. Once the active condition
has been satisfied in our example with switch SA in the down position, the throttle
output will be held at -100% once the throttle value falls below -85%. (Compare the
first graph above with the second.)
However, if the 'Sticky' is enabled, then the throttle will be cut the instant switch SA
goes down.
Once the active condition has been removed (i.e. switch SA not in the down position),
the throttle stick or control must be brought down below -85% before it can be
increased. This avoids the motor unexpectedly starting at a high throttle position when
throttle cut on switch SA is released.
Low position trim
For glow and gas we use 'Low position trim' to adjust the idle speed. The idle speed
can vary depending on the weather, etc., so having a way to adjust the idle speed
without impacting the full throttle position is important.
If 'Low position trim' is enabled, the throttle channel goes to an idle position of -75%
when the throttle stick is at the low position. The throttle trim lever can then be used
to adjust the idle speed between -100% and -50%. Throttle Cut can then be
configured to cut the engine with a switch.
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