The torqeedo prop is desingned to work at 1300rpm most efficient so i choose the gear reduction a little higher to get around 1500rpm. I'm not sure what the trust is but it feels like 30 kg. i dont know why i cant get more trust
at full speed the multimeter shows me 4kw of power consumption. I don't think the open prop concept is the best solution for wave surfing, the resistance of the whole motor housing will make it impossible to get good performance when the motor is shut off. But to have fun on flat water this is perfect. I made a lot of test rides on different surfboards an had no problems whit the force on the keel mount, but I'm sure if you hit the ground or something it would definitely break of. I know its dangerous with the open propeller but I'm working on a protection ring around the prop.