Hello, I'm preparing to mount the automat to the sliding gate. The gate assembled a few years ago I have no idea how much it can weigh, gate light 4m and 2m tail. The drive wants to be assembled by itself and not for a company to do it. From a friend I heard that fitters come with a measuring instrument to measure what force is needed to close / open the gate and it is something like a weight made of a spring and scale. I found something like this and checked my gate when closing it needs about 20 kg to move then it goes with a draft of about 10-15 kg and the last 50 cm is already about 32 kg of draft. I wonder if the drive up to 500 kg Faac 740 with max thrust 450 N is enough or look for a more powerful drive e.g. Faac 741 to 900 kg and 650 N or Came BX78 up to 800 kg and 800 N. As far as I understand the ideas of measuring the thrust in kilograms and converting it to Newtons, a drive with thrust up to 400N is enough. And it is clear to me that we buy the drive with a reserve of power due to winter etc. only what reserve should be included? And is my thinking with the conversion of kilograms of thrust into newtons given by producers right?