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RC Jet Boat 300

jtronics

July 1, 2020

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Description

Boat full Size with Stator and Nozzle 330x109x70mm
Boat Size without Stator and Nozzle 300x109x70mm
You need a 3D printer with a minimum print-high of 200mm.

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RC controlled Mini Jet Boat 200 Mono
RC controlled Mini Jet Boat 200 Twin
RC controlled Mini Jet Boat 300 Mono
Take this model, if you only need the Water Jet Drive
For beginners, i recommend to start with RC Jet Boat 200 Mono or the Jet Boat 300 Mono

Video:

Partlist (last update on 2020.05.07)

6x screw headless M2x3mm (propeller, servorhorn)
6x screw inbus M2x8mm (3x jet nozzle, 1x oil)
10x screw inbus M2x6mm (4x cover, 2x servo, 2x electronic, 2x motor)
2x screw inbus M1.6x5mm
6x insert M2x3mm heating brass insert, 4x cover, 2x electronic mount
1x seal Moosgummi Foam rubber cord 2x200mm
2x battery 18650 3400mah 3.7V or 18350 1500mah 3.7V
1x balancing cable 500 mm RC Servo cable
1x drive longer motor shaft 2x30mm
1x drive rod 2x100mm
1x drive shaft coupling, motor 2mm to rod 2mm
1x drive Brass bearing 52B 2.05x5x2.4mm, OD 5mm or MR25ZZ (4.50€)
1x servo 2g Source 1 or Source 2 or Source 3
1x servo rod 1mm, ca. 100mm
1x servo brass tube OD 2mm, ID 1mm (servo rod), Length 10mm
1x drive jet bearing, brass tube OD 3mm, ID 2mm (drive rod Length 3mm, servo rod Length 10mm)
1x Battery Lipo Charger iMAX B6 charger (optional)

Brushless Motor

1x drive motor DYS BE1806 2300KV or 4 pcs Motor other motors also possible, diameter max. 23mm, length ca. 18mm, screws 16mm
1x drive esc Emax 20A BLHELI ESC
or
1x drive esc Littlebee 20A ESC and 1x [Recom R-785.0-0.5(https://www.aliexpress.com/item/32956844474.html)
or ... only for experts
1x drive motor RS2205
1x drive longer motor shaft 3x30mm
1x drive shaft coupling, motor 3mm to rod 2mm
1x drive esc Littlebee 30A ESC and 1x [Recom R-785.0-0.5(https://www.aliexpress.com/item/32956844474.html)

Brushed Motor

2x screw inbus M2x4mm (2x motor)
1x drive Brushed motor 180
1x drive Brushed ESC 20A

My RC Controller (example)

1x Transmitter FrSky Taranis X9D Plus 2.4G
1x Receiver Mini Frsky D8 2.4G 4CH

or

1x Transmitter FLYSKY FS-i6X i6X 2.4GHz
1x Receiver [Flysky i6 i6X i6S] (http://s.click.aliexpress.com/e/3CQdZqrQ)

Is it waterproof ... YES, it is!

Watch the video RC MiniMono Boat - 3D printed Jet Drive UNDERWATER! After that, there was no water in it!
If your print of the hull is good, it should be waterproof. But, if you want to be safe, you could still paint it with a thin layer of car clear coat. I tried both variants and it works very well.
The drive shaft of the boat is sealed between two plain bearings with a lubricating seal.
The cover is sealed with a 2mm cord of foam rubber or with a 3d printed flex seal

Update