So I have an armature sitting on a bicycle and have created IK constraints on the feet/legs to follow the pedals of the bike (So the pedal is the target)

The issue I'm seeing is that in object mode when I preview the animation of the pedal turning the simulation looks amazing. The second I click away, back into pose or to timeline it gets all jumbled. I'm missing something here. Any ideas?

Here is a link to a screen capture of the issue. https://youtu.be/0a1_SQGDnW8

  • $\begingroup$ Welcome to BSE! Please post pictures using the Blender Stack Exchange tools. $\endgroup$
    – JakeD
    Dec 9 '16 at 22:30
  • $\begingroup$ Your link goes to a "video unavailable" link. What you're describing sounds like a dependency loop. Open a console view and take a look for any dependency cycle warnings, then fix them. You need to use a clear hierarchy of action. $\endgroup$
    – Nathan
    Feb 15 '21 at 20:13

Go into the armature in edit mode and bend the knees in the direction they are supposed to bend just a tiny bit.

If the legs are completely straight, the ik constraint might get confused which way to bend the knees.

Or give the IK constraint a pole target. I made a video on this here: https://vimeo.com/171279647

If you upload your .blend I can make a .gif on your specific example. https://blend-exchange.giantcowfilms.com/


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