Double Acting Oscillating Engine

[editor@glue-it.com]

Thought you might all like this. A video of my double acting oscillating engine. I designed and made it some time ago, but thought it might be nice to talk people through how it works along with the basic dimensions etc. Specs are listed on my double acting engine page:

I'm also trying to improve my presenting style for videos like this, don't know about everyone else, but it feels quite strange to me to talk to a camera.