RC Speedboat with ducted fan

thingiverse

The Speedboat with Ducted Fan ========================== The Model ---------- This speedboat was inspired by a YouTube video where someone built a similar model. I didn't find a printable model, so I drew one myself. *https://www.youtube.com/user/RcLifeOnSimon* Additional Needed Parts ------------------------ To build this speedboat, you will need the following parts: - 64mm ducted fan (Order from China: <https://www.banggood.com/QX-Motor-64MM-5-Blades-EDF-Unit-With-QF2611-4500KV-Brushless-Motor-p-1064602.html>) - 9g Servo (SG90) - 2.4 GHz remote control (Minimum of 2 channels) with receiver - Brushless motor-controller (Mine has 40A) with BEC (Power supply for the R/C receiver) - Several M3 screws - 2 M2 Bolts and Nuts for the Servo mount - Gasket for the cover (Made from two tube gaskets glued together with cyan glue. Diameter: 3.2-3.6mm, Length: 290mm) - 3S Li-Po Battery - Optional battery buzzer to give an acoustic signal when the battery becomes low - Some primer and paint - Epoxy Glue to glue the two parts of the body How to Print ------------- Generally, all parts should be printed with very little infill. 10% is a good number. Otherwise, the boat will become too heavy. ### Boat Hull Due to its size, the hull must be printed in two parts on most home printers. #### Front Part The front part should be printed with support "touching buildplate only." Make sure that the overhang angle is adjusted so that no support is generated in the center part. #### Rear Part Use a support blocker to ensure that no support is printed in the threaded holes for the screws. ### Wing The wing should be printed standing with the servo-side down. How to Assemble ----------------- ### Boat Hull The two parts of the boat hull must be glued together using 2-component epoxy glue, which works best with PLA. The glue can also be used to fill and smooth out small gaps between the two segments. To seal the printed parts and fill small leaks, the hull should be sprayed with filler first, sanded, and then sprayed with color spray. While spraying, some bolts should be placed in the threads to prevent them from becoming unusable. The printed hull has no cable conduit for the fan. This hole must be drilled after printing to match the size of the used wires. After installing the wires, the hole should be sealed either with epoxy glue or silicone. ### Fan Holder The ducted fan should be fixed by a screw in the holder. A hole must be drilled through the holder and the fan tube for this screw. Make sure to find a position where the fan does not touch the screw. ### Gasket for Technical Compartment This gasket is glued together from rubber gaskets for tubes, fitting the size. It should have a diameter of 3.2-3.6mms and a total length of 290mm. If you can find a round gasket with a diameter of 92.5mms, it would be perfect. Cyanoacrylate glue is ideal for gluing rubber. ### Wing Holder The lower wing holder is mounted at the rear side of the boat. It can be fastened with M3 screws but should also have some additional glue added. The part is not symmetric: the hole must face away from the end of the boat. Video ------ https://youtu.be/Zten7D27IQI