Gearhead Misc - Stealth Multidrive Direction Output

For the Stealth MultiDrive RB, RD and RT series gearheads, how do you determine for the dual output (RD) which face of the gearhead turns in which direction?

The side where the bevel gear is located has a flange with a set screw positioned toward the motor. This output face would rotate opposite from the gearbox input direction.

Gearbox assembly

Gear Detail

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