The sliding gates Northern Beaches are designed to move an automated gate backwards and forwards and stop it on level ground. They are not built to cope with the completely different forces at work when either driving automatic gates uphill or controlling them as they descend. The different forces involved when operating a sliding gate motor on a slope will also affect its operation and there are likely to be difficulties even in setting it up. Also, without clever electronics, this type of use is likely to lead to rapid problems with mechanical elements such as gearboxes that bear larger...