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HELP! Motion Simulation Dynamic Analysis

HELP! Motion Simulation Dynamic Analysis

HELP! Motion Simulation Dynamic Analysis

(OP)
I'm trying to set up a model in NX8.5's Motion Simulation to run dynamic analysis and am having trouble determining the resultant forces/torques.
What is the best method to go about this?

For example, if I have a simple system of two mating gears with a torque applied to one, when I try and plot the torque of the second gear, everything reads zero. This is true if the gear revolute joints are fixed or not, if there is a spring attached to one or both of the joints (to give them something to react against), whether I use scalar or vector torques, etc. I have also tried reading the force of a marker point on the edge of one of the gears. Still zero.

If my gears are 10" and 5" in diameter, and I apply a torque to the 5" gear of 10 lbf-in, how can I get the plot of the second gear to read 20 lbf-in?
Seems simple.

Thanks!

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