Looking at the "HeliTrim" Plugin by POM, a plugin that works as a hardware compatibility layer to allow basic spring centred aeroplane joysticks to control helicopters effectively.

The download links:

HeliTrim : https://forums.x-plane.org/index.php?...
or: https://x-plane.to/file/331/helitrim

Bell 47G X-Plane 12 : https://forums.x-plane.org/index.php?...

Errors, Omissions, Clarifications:-

Clarifications: I'm an aeroplane pilot - I do know they are called anti-torque pedals, but I've probably said rudders a few times!

The fine print:

It shouldn't need to be said, but please remember these videos are for recreational simulation and entertainment purposes, not real world flight instruction.