How do I set throttle sub trim to get the horn at 90 degrees? There does not seem to be anywhere in the software to do this like there is for cyclic servos. Also why are the throttle MIN and MAX settings reversed? I have to change MAX to change the closed end of the throttle servo travel. I tried ticking the reverse box but this will only reverse the throw and does not reverse MIN and MAX.

Hello,

for this, you should use Throttle Range settings.
Min value should mean always the lowest position of the servo, when throttle is closed.
Max value is always the highest position, when throttle is fully opened.

If you are getting full throttle when throttle curve is at 0%, then you have to tick Reverse in the Throttle settings.

If throttle channel in the Diagnostic tab is not corresponding with the bar (full throttle curve is showing 0%), you have to reverse the channel in your transmitter.

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Spirit System developer

My throttle curves are correct with 0 is closed and 100 is high and the servo is moving the correct direction. Why is the min throttle range changing the throw on high side and max throttle range is changing throw on closed side? Also I can't go to 2300 us or the servo won't move until about 25% on throttle curve. 2000 us and below works fine.

Thanks for the help.

So you have Diagnostic tab showing low bar and 0 when throttle stick is down, high bar and 100 when throttle stick is up, and still changing the min and max in this screen operate wrongly?

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Yes. When throttle is at low I have to adjust Max to change the low throw. Min will adjust high throttle.

The range is displayed always in the same way, because numbers here are absolute.
It is displaying what is the real limit of the servo. These limits are always same, only direction can change when you tick Throttle Reverse.

Unfortunately I still do not understand the problem.

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Spirit System developer