Waterjet propulsion unit 3D print model stl free

Shaft- needs to be as straight as possible. If possible use reinforced PLA for making impellers.īearings and lip seal- just press them inside (first bearing, then lip seal) you simply tighten impeller on the shaft. For this impeller you will need 250mm shaft with 70mm thread at one end. When the nut is in, just continue printing. If its to tight, use soldering iron to heat the nut to press it in easily). In that time you have to insert M8 nut inside (it is tight fit. This is the time you will hit pause button and stop printing complete impeller. Match the holes on impeller and on the shaft and tighten the concave bolts to lock impeller on place.Ħ blade impeller- first calculate time for printing not completed impeller. Holes are rotated 180° (each on one side- like on the impeller). First hole is located 40mm from the end of the shaft and the other 73mm from the end. When using this impeller you need 250mm shaft with two 2.5mm deep holes. Then put in M5 concave end bolt to each side. You can check demonstration video of this jet unit here (in this video i used only 6s battery) :ģ blade impeller- when its fully printed expand two holes with 4mm drill and make M5 thread with hand tap. 1x M8 nut 24mm thick which is inserted in 6 blade impeller while printing process. 2x brass hose barb fitting for water cooling- 10mm thread, 2x lip seal (same dimension as bearing),

3x skateboard bearing (8mm ID, 22mm OD, 7mm thickness), Walls are 3mm thick and this makes it very robust design.Įasy to print (hard parts with PLA and gaskets with flexible filament). You can choose between normal difusor or steering difusor. With brass inserts which are inserted very easily using soldering iron. Shaft seats on 3 bearings for better stability. It offers great water cooling system for motor and esc (you dont need additional water pump). Great design with big steering angle, low drag for maximum water flow, high or low angle of attack impeller (two options- stl for both included). My 80mm design water jet thruster for bigger rc boats, kayaks, jet surf, small boat.

Waterjet propulsion unit 3D print model stl free