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Why do these gears move in the opposite direction only in animation?

Question asked by Jacob Murray on Oct 23, 2018
Latest reply on Oct 24, 2018 by M. B.

I have set up a screw and a couple of gear mates so that the jaw in the screenshot below closes when the middle gear is turned clockwise. Everything works fine in the model window - I move the jaw up and down and the gears move in the correct direction. In the motion study (number 5 in the assembly file), I can see the gears turning the correct way in each frame, yet when I make the animation they seem to turn in the opposite direction for some reason. I have set the frame rate to 60 to see if it might have been caused by missing frames somehow making it look like it was turning the opposite way, but even at 60 frame with no compression the middle gear goes counter-clockwise.

 

Does anyone know what would be causing this and how to fix it?

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