Dude your work is Epic, Love it. Thanks for sharing your files with the world bro. Nice one.
I have been thinking about what would happen if no gearbox was used and a 60-90mm water jet turbine is used like the blade pitch and shape you see on jet skies, …if the power output on thrust would be enough speed to get up on the foils.
With a jet ski type water turbine there would be less drag, less blade wash as it is a much smaller duct. rpm is much higher yet the turbine has more efficiency. Maybe it will take a little longer to get up on the board at foil speed…but I am thinking it should have a much higher top end speed.
Just wanted to share my thoughts with others as I have not seen anyone talk about this.
I would be happy to show anyone my build…I do not have printer…only lathe and milling machines. My Turnigy AquaStar T20 3T 730KV/1280KV Water Cooled Brushless Motor arrived today