For those with SPAD next that would like to do this, here is what you need to do:
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Edit DHC6_Templates_Systems.xml under aerosoft-aircraft-twin-otter\SimObjects\Airplanes\AS_Aircraft_DHC6_Common\ModelBehaviorDefs
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Comment out the spoiler line @ the bottom:
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Create two expressions in SPAD next
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the First expression is the decision value, the sum of the prop beta values in degrees
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Second the linear calculation for the axis (0-16864)
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[SIMCONNECT:PROP BETA:1,DEGREES] + [SIMCONNECT:PROP BETA:2,DEGREES]
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pow((34-([SIMCONNECT:PROP BETA:1,DEGREES] + [SIMCONNECT:PROP BETA:2,DEGREES] )),2)*83
- Then you apply this logic to the throttle axis of your controller (Bravo in this case)
- I chose to do it globally for now. Later I’ll do it per prop / per side.
EDIT:
Did I find a bug? You can set the spoiler axis WAY WAY above 16384, and doing so causes the plane to freak out / crash when going into beta because the spoiler axix values go WAY above 16K. So I have a limiter added.
Overall this works freaking great, 100% more controllable and predictable.
Huge thanks to @UnsealedKarma36 for unpacking the RPN which I am terrible at and the SPAD DIscord group for help getting this working.