Garage door openers are produced with different drive mechanisms, which are the parts that act like the transmission does in a car. If your in the market for a new garage door opener, you need to know a little bit about the different types before you decide on one. The various kinds are the chain-drives, the belt-drives, the screw-drives, and the jackshaft drive. You’ll find that there’s a type that is better for most people and that’s probably what you should look into.