I am now in the final stages of completing a 4.2m x 3.6m timber roll off roof observatory. I am no carpenter and it has taken me a couple of years to build. The roof can be rolled manually on a good set of existing V track and pulley wheels. I would like to have the roof automated using the same track and wheels and I have seen mention of electrical garage doors, gates etc being used for such a purpose. Can anybody recommend such a set up that could be easily sourced and installed by myself. It would be much appreciated.