Extending the drive arm on our Hydra series motors is necessary if your install or gates are non-standard. The gates may be mounted over 150mm off the hinge post, or the gate brackets may be in the way for a standard-length arm.
Whatever the reason, an extended arm is a great way to overcome difficult installs. The Hydra has 2 motor arms: 1 straight drive arm and 1 x bent gate arm. If you're not sure what arms are required just contact us to discuss your installation.