Boats, Jet Skis, Kayaks etc., including hovercrafts
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So the motor that I want to use for my electric surfboard has a max speed of 25,000RPM. I want to reduce that to 3000-5000 RPM. Can you recommend any planetary gearboxes for that input speed? All the german manufacturers max out at roughly 8000RPM. I am not even sure what would happen at 25,000RPM. It is submerged in water after all.