Spirit 3 + Align RCE-BL100A ESC Telemetry + Spektrum SRXL2 Compatibility

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Venomracer@1726
Posts: 1
Joined: Thu 15. Oct 2026 4:59:47

Hello,

I'm setting up a Spirit 3 flybarless controller on my Align T-Rex 550X Dominator helicopter and would like clarification regarding ESC telemetry and RPM sensing.

My equipment:

Helicopter: Align T-Rex 550X Dominator
Flybarless controller: Spirit 3
ESC: Align RCE-BL100A, firmware version 4.0.06
Receiver: Spektrum SPM4651T (SRXL2)
Transmitter: Spektrum NX10+
ESC governor: Align Governor Store Mode
I found an earlier discussion confirming that the Align RCE-BL100A with firmware AL-4.0.4 supports HobbyWing-compatible telemetry.
I have a few questions:

Does my Align RCE-BL100A with firmware 4.0.06 support HobbyWing telemetry through the Spirit 3 using the Telem UNI cable?
If so, which port on the Spirit 3 should the Telem UNI cable connect to? The documentation references SAT1 on earlier Spirit controllers.
Can the Spirit 3 transmit ESC telemetry, including RPM, voltage, current, and battery consumption, to my Spektrum NX10+ through the SPM4651T SRXL2 receiver?
Alternatively, my Align ESC already has a dedicated yellow RPM signal wire. Can I connect that wire to the PIT signal position on the ELE/PIT/AIL connector while the SRXL2 receiver's signal wire occupies AIL? Would both signals function simultaneously?
If I use either method, can the Spirit 3 display and transmit actual motor RPM to my NX10+ while allowing the Align ESC to continue operating in Governor Store Mode, without enabling the Spirit governor?
I'm primarily interested in monitoring actual rotor head speed while retaining the Align ESC governor, although full ESC telemetry would be preferable if supported.
I'd appreciate confirmation of the correct wiring and configuration for this specific equipment.

Thank you!
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