Bone Dynamics stopped working

[PeteX]

I have enabled bone dynamics, but the bone don't move - it is like it is fixed in place, even with torque force at 20. Perhaps something is overriding the dynamics?

[synthsin75]

If the dynamic bone is keyframed in any smart bone action the dynamics will not work as long as that smart bone is rotated.

[PeteX]

Thanks, good to know! But I'm not even using smart bones yet ...

[synthsin75]

Then you need to provide either much more detail about what you are using/doing in the file or an example file with the problem.

Did the dynamics ever work in that file? If so, what did you change? If not, then you may have angle constraints, an angle control bone, or something else.

[Danimal]

Also, this may be obvious, but without any details it's worth a shot: do you have the bone attached to something else that's moving? Dynamics only work when something causes the bone to work in the first place.

[PeteX]

Thanks for the answers -- sorry about the lack of examples, but things works now: The problem was that my bone-layer contained loads of bitmap graphic, without any bones to guide them. This created a happy mess that jammed the dynamics. After removing the bitmaps from the bone layer, it all worked!

[synthsin75]

Even with the bitmaps, disabling Animation>Allow Frame Skipping should show the dynamics working. Most likely AS disabled them to attempt to play the timeline at full speed.

[PeteX]

Thanks Synth', good to know. I haven't explored the menus much

[ErikAtMapache]

I have inadvertently overridden bone dynamics with smart bone actions before. Basically I created a smart bone but accidentally added another bone to the action. If you select the action in the action popup and select the rotate bone tool, all bones that are affected are highlighted.