Some renders show this model in another colourway.
Self-righting RC speed boat
A 472 mm deep-V racer with a fastback canopy and rear wing that rights itself, printed in vase mode.
- Length x beam
- 472 x 99 mm
- Motor
- EMAX ECO II 2306 1700 kV on 3S
- Print time
- 7.0 h on 7 plates
- Filament
- 143.0 g
Colourway
- Red main
- PLA Aero black second
- Sunflower yellow accent
About the design
A slim deep-V racer for a 2306 quad motor on 3S. A long low foredeck falls to a fine bow, and a flat-roofed fastback canopy rises from the transom's tail spine to a peak and fairs into the foredeck. An inverted wing over the tail presses the stern down at speed. The sealed canopy rolls the boat back upright after a capsize. The hull and canopy print in spiral vase mode, so they are light and seamless, and folds in the wall stiffen them. A log under the keel carries the stern tube from the transom into the hull at the shaft's angle, so nothing is drilled by hand. The motor bolts to a printed mount, a printed coupling drives the shaft, and the rudder behind the prop picks up water for a water-cooled boat ESC. The canopy prints in Bambu PLA Aero, a PLA that foams as it prints and weighs about half as much, and the hull and fittings in PLA Basic.
What you can change
- Shaft angle, which places the log, the coupling and the motor
- Prop size and how far behind the transom and below the keel it turns
- Motor, which sizes the mount and the coupling
- Battery, ESC, receiver and servo
Specifications
- Length x beam
- 472 x 99 mm
- Motor
- EMAX ECO II 2306 1700 kV on 3S
- Shaft
- 3.175 mm in an 8 mm tube cut to 167 mm, 10 deg to the keel
- Esc
- Hobbywing SeaKing 30A V3
- Mass ready to run (g), my estimate
- 389
- Centre of mass from the transom
- 22.4 % of length
- Waterline at rest over the keel
- 15.3 mm
Printing
| Project | Plates | Hours | Grams |
|---|---|---|---|
| Hull, vase mode, PLA Basic | 2 | 2.7 | 83.7 |
| Canopy, vase mode, PLA Aero | 2 | 2.4 | 13.8 |
| Fittings, PLA Basic | 3 | 2.0 | 45.5 |
| Total | 7 | 7.0 | 143.0 |
Times and weights come from the Bambu Studio 02.08.02.61 slice at 0.20 mm layers. Each figure is rounded on its own.
In the room
Some renders show this model in another colourway.
Credits and licence
The layout follows "Self righting RC boat" by Derkjohn23 (https://www.thingiverse.com/thing:5453998), licensed CC BY (Creative Commons - Attribution): a 472 mm deep V with a reverse chine, a U-shaped rear half whose well holds the electronics under a canopy, and parts printed in spiral vase mode with slit ribs. The hull and canopy are my own design and use none of the author's geometry.
- Licence
- All rights reserved