It happens when I rotate and apply the objects as seen in the picture. I also reduced the number of segments.

shape-bender-test_ecati.skp

Maybe it could be this way.

test.skp

The hinge and part must be a group.

Do you want to do this?
Click on the picture for animation.

Two joins, SketchUp, MsPhysics_ecati.skp

It works perfectly. I didn't see any problem.
Click on the picture for animation.

If you upload the skp file, we can have a look.

I changed some values as in the picture.

Klappe90GradfastMotor_ecati.skp

I just set "Word Scale" to 45.

testneu_10_ecati.skp

Is that what you want?
Click on picture for animation.

Klappe4hinges_ecati.skp

We make this adjustment so that the second wheel stops. If you set "Angular Friction = 0", you will see that the wheel continues to spin.

"MSPhysics_v1.0.3" does not work properly yet. Author Anton_S is working on the new version. The new version has been released yet.
For more information see here. https://sketchucation.com/forums/viewtopic.php?f=323&t=56852&start=840

There are centering errors, be careful. I fixed it. Other edits can be seen in the file. Make the settings shown in the pictures.

physics_ecati.skp

I add the explanation file.

GEARS_explanation.skp

I made some fixes. You can see the changes I made by examining them.

GEARS_ecati.skp

I think there is an error in grouping blocks with angles. If you share the skp file, I can help.

Choose this and try again.

Is it such a thing?
Click on the picture for animation.

Simple hinge_ecati.skp

If you mark "Collision Wireframe", you can see how the parts touch each other (picture 1).
You can fix this error by grouping the pieces separately (picture 2).

Ergopower_OHBL_ecati.skp

Can you share the skp file?

If you move the model to the center of the axle, the hole is drilled. Interesting. Is this a bug?
Click on the image for animation.

This can be plugin.
https://sketchucation.com/pluginstore?pln=BezierSpline