First of all, just let me say those gears are not my own design. I took them from this model on warehouse: http://sketchup.google.com/3dwarehouse/details?mid=595bce5d40b60f7f94909ccb7e2cf912

I must thank 3 times and I do it most gladly: first for the congrats ( ); second for the class (better than right my wrongs, your explanations help me with some other issues I've been wondering lately); and last but not less important, for the attached file. Your solution is not only more efficient, but also more elegant.

The top bar was supposed to be grouped with the vertical bars, just to be easier to see how it behaved.

Once more, thanks for the explanations and the corrected file

Hi there! I'm new here, so a little about myself: I just started using Sketchup and Sketchyphysics, so I decided to draw some random stuff starting with a plan of my house and now (to enjoy the power of SP) a little mechanism using 3 bevel gears.

I managed to mount the mechanism - taking care to correctly design the hole in one of the parts - and everything seemed nice... until I started the animation! as soon as I hit the Play button, my model starts to move and it seems it will fall apart or off the screen (which occasionally, it does). The joints seems to be right, the hole and the cilynder seems to be right, so I have no idea what is causing that.

I'm uploading my file and would be very grateful if someone enlighten me or point out where I'm ruining it

Thanks in advance!

Study how gears and joints work