Animation / Simulation - Piston

Animation / Simulation - Piston

How would you animate a piston?

I want to simulate a wheel being rotated by a bar. With one side of the bar locked into a single axis (x) and the other side following the wheel as it rotates (x and y).

For the life of my, I can't figure how would do that. I can easily follow the rotation using a Point Constraint, but that moves the entire bar. How you just move one side in the X and Y and the other side just in the X.

I am trying to model a train wheel being pushed by a piston.

Please help. Thanks - Geoff
 
Thanks!

Thanks! Once I switched from Rigid Body Joints to Piston, the Forum search worked much better. Amazing what works when you use the proper terminology. :)

Cheer - Geoff
 
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