I am building an electric outboard out of an old 7.5 hp evinrude. Motor is the right size and power. Rated speed is 4300rpm max if 5300rpm which is perfect. Using existing gear case for a 2:1 reduction should help with amp draw. Initial review Pros: Motor is bigger heavier than I thought. All the wires where labeled and I even got a diagram with instructions how to change rotation of motor Weld on motor case looks pretty good The shaft turns true, it has a left hand m8 thread Really like the controller options for a 3 speed switch. Cons: Only ones so far is there is the cooling holes are not finished off. If you remove the plates holes are larger inside. The unit I received is missing cooling fan too, not sure why. I enlarged the all the holes both sides of the case ends. Will use a fan with 3d printed case to ensure it is cooled. The outputs from the controller are 48v for lights be warned.