Luca Dalbosco is just 16 years old but as a diligent tinkerer he already uses 3D printing for his models. Within a few weeks he has built a fully functional speedboat drive from SLS (“Selective Laser Sintering”) parts and is successfully navigating Swiss waters with it. In the interview he tells us how he went about it.
To be able to steer the boat sideways, a movable nozzle is required that directs the water jet to port or starboard. Luca designed the boat in such a way “that the water jet can not only be directed backwards, but also under the hull towards the bow”. This is done via the so-called reverse bucket, which is folded over the nozzle from above. Braking is also possible from full speed, because the impeller continues to rotate at unchanged speed. Ergo: a practically immediate standstill of the speedboat.