The Ultimate 80mm DIY SUP Pump-Jet

PRO-JET 80 – 3D Printable SUP Water Jet Propulsor Turn your paddleboard into an electric jet-powered SUP! The PRO-JET 80 is an 80mm water jet propulsion system designed for DIY electric SUP projects. It is optimized for 6384 and 6374 brushless motors, providing excellent performance while keeping the total build cost affordable. Tested Performance ✅ Top Speed: 15 km/h ✅ Test Setup: 16V~26V, 6384 200KV above Brushless Motor ✅ Peak Current: Below 60A at 26V power supply system ✅ Power: Up to 2800W ✅ Compatible Motors: 6384 / 6374 200KV above ✅ Estimated Build Cost: Under $100 USD (excluding battery) Features 80mm high-efficiency jet pump Fully 3D printable design Detailed assembly manual included Easy to print and assemble Perfect for DIY electric SUP projects Modular design for future upgrades Notes Performance may vary depending on: Rider weight Battery voltage Motor KV ESC settings Propeller clearance and print quality The current test result (15 km/h at 26V with a 6384 200KV motor) was achieved during underwater testing and should be considered a reference configuration. If you build one, I'd love to see your results! Feel free to share your makes and improvements.   ⭐  Boost MeIf you like this project, please Boost, Like, and Upload your Make. Your support helps me develop more open-source water propulsion projects!Update log 2026/08/03 Update Rotor propeller with 8.0mm & 8.1mm inner diameter ,try 8.0mm if 8.1mm propeller will rub the "Intake Shroud". Design specs: The propeller is designed with a 78mm outer diameter to fit the 80mm inner diameter Intake Shroud.     Here are the components I bought from a local shop:  Motor: 6374/6384 200kv Brushless Motor (waterproofed both the inner and outer rotors of the brushless motor using epoxy)  ESC (Speed Controller): 60A above ESC  Receiver: D600 remote controller   Wires: 12 AWG silicone wire  Sealant: Epoxy resin (Note: I'm not entirely sure if these exact brands/models are available in your area, but these are the general specs.) Parts List motor                     https://www.aliexpress.com/item/32999418474.html ESC                          https://www.aliexpress.com/item/1005010686461204.html? Wireless receiver  https://www.aliexpress.com/item/1005010151769598.html? Hex socket head cap screw M3*14mm 1ea Hex socket head cap screw M4*18mm 4ea Hex socket head cap screw M4*10mm 8ea M4 Brass Heat-Set Insert, OD 6mm*L5mm S6000-2RS  Stainless Steel Ball Bearing (Hybrid Ceramic)  1ea S608-2RS   Stainless Steel Ball Bearing (Hybrid Ceramic)  1ea Ø8mm x 150mm Stainless Steel Linear Shaft  Aluminum Flex Coupling Ø8mm*Ø10mm (D20L25)  Aluminum 2-Jaw Coupling, Ø8mm (D20L25)                                        Precision Shim Ø8mm*Ø12mm*1mm(Teflon or 3D Paint )   https://www.instagram.com/reel/Dbi-g4ghkky/