ProtonRC now part of Realize3D
RC jetboats
No propeller. No rudder. No limits.
Two jetboats you print and build yourself — the 680 mm KwikJet X and the classic KwikJet. Everything that makes them go is tucked inside the hull.
ProtonRC 
Printing on demand
Your geometry, printed properly.
Two UltiMakers and a resin machine, pointed at whatever you need made. Send us geometry and get a quote from someone who has actually opened the file.
The lineup
Two jetboats. One jetpump obsession.
Same hardware, same philosophy, two very different boats. Pick the one that matches the water you drive on.
The flagship
KwikJet X V2
Four years of hull iterations, distilled into one.
- 680mm total length
- 40mm jetpump diameter
- 12 hull iterations
The classic
KwikJet
The boat that started it all — and still the quickest way in.
- 52km/h top speed, on 3S
- 35mm jetpump diameter
- 620mm total length
How it works
There is nothing under the boat.
No propeller sticking out. No rudder. The pump sits inside the hull, swallows water through the bottom and throws it out the back — so there is almost nothing left to break.
Scroll the diagram sideways
- 1 Intake Water is rammed in through a slot flush with the bottom of the hull. Nothing protrudes, so there is nothing to snag or snap off.
- 2 Impeller Driven straight off the motor. The flow divides around the hub and the blades screw it along the housing — no gearbox, no lag between trigger and thrust.
- 3 Stator Fixed vanes take the swirl back out as the two paths rejoin, turning it into straight-line pressure instead of wasted rotation.
- 4 Steering nozzle The nozzle squeezes that pressure into a high-velocity jet, and the whole thing swivels. Aim the nozzle and you aim the thrust — which is why a jetboat turns so much harder than a rudder boat.
- 5 Reversing bucket Newton’s third law does the rest: the jet goes backwards, the boat goes forwards. Drop the bucket into that jet and it goes backwards instead.
Realize3D
Send us something to make.
Three machines, two technologies. Dual-extrusion FFF with water-soluble support for geometry that has no business being printable, and MSLA resin for the parts where surface finish decides whether it works.
- UltiMaker S3 Dual-extrusion FFF
- UltiMaker 2+ Connect×4 Single-extrusion FFF
- Concepts 3D Athena I MSLA resin
Builders
Nobody builds one alone.
Print settings, motor and impeller combinations, what broke and how it got fixed — it all lives in the group. Post your build; people will tell you what they would do differently.
ProtonRC group
Builds, help and print settings on Facebook
@proton_rc
Renders, prototypes and on-the-water clips
contact@realize-3d.com
Talk to us
Open mail app