Help please, Spirit 3 throllte range setup

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Thinice
Posts: 1
Joined: Fri 27. Mar 2026 8:13:00

Good day fellow spirit users
Its my first time setting up a Spirit fbl and love how easy it is, the only problem is I'm not getting enough throttle range to activate my castle esc, i have selected channel 1 to be my throttle channel and confirmed with a servo that it is working, my hardware are:
Spirit 3
Spektrum srxl2 rx
Castle esc
I got a work around solution just to fly the heli by using a stand alone ppm receiver for throttle so that i can adjust my travel to more than 100% min and max for the esc to be able to initialize but would like to use the fbl for throttle control to and do away with the separate rx

Please help

Thank you so much

Kind Rregards
Thinus
ZeXx86
Site Admin
Posts: 12919
Joined: Mon 29. Apr 2013 16:06:44
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Hello,

with Castle people are often having problem, because they instantly enable Castle telemetry support. But in case of Castle you have to enable also Live-Link feature in the ESC and to have Telem CC adapter cable.
If not using these, you always have to turn off Castle telemetry in the Spirit settings.

Then you might need to readjust Throttle Range - Low in the Spirit to 1040us instead of default 1100us. Then it must work.
Spirit System developer
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