Thanks to the developers of plugin Sketchyphysics, it's an amazing tool for animation.

**Hi guys!
I am brazilian and student in food engineering, but I like to use SketchUp to mechanical drawings. I like Sketchup because it's simple yet versatile, and has interesting features. my 3D warehouse:

My 3D Warehouse

This video is of a model of a four cylinder inline engine, animated with sketchyphysics:

[flash=500,405:3pmp81n7]http://www.youtube.com/v/mdeD25RVPfY[/flash:3pmp81n7]

Centrifugal Pump

[flash=500,405:3pmp81n7]http://www.youtube.com/v/8lh6LExkXIs[/flash:3pmp81n7]

[flash=500,405:3pmp81n7]http://www.youtube.com/v/gYPvLeVtel4[/flash:3pmp81n7]

Drive Shaft(Cardan Shaft)

[flash=500,405:3pmp81n7]http://www.youtube.com/v/QXev7RsZuPY[/flash:3pmp81n7]**