Wiest Marble Macine #4, Loop-de-loop

This is the 4th video in a series, showing my progress in creating my 4th Marble machine. This is the second Loop-De-Loop I've created. The first one had difficulty keeping the bearing in the track. With this design, I've used a track that the bearing can't fall out of. It also has a higher velocity to make sure the bearing makes it all the way to the end.