3D Printed ROV – Kort Nozzle Thrusters

These are the thrusters for the Rov.  Like most of my ROV’s these are made from 750 GPH Mayfair Bilge Pump Replacement Motor Cartridge made by Johnson Pump.

The designed started as just an add on Kort Nozzle Upgrade for the bilge pump thruster.

I then decided to try and incorporate that kort nozzle into a complete thruster/mount for those bilge pumps.

The pump cartridges insert and lock into the housing much like the original bilge pumps they were designed for.

They are designed to use Robbe three blade 50mm props available at http://www.harbormodels.com and the custom prop adapters the specs are Shown Here.

The thruster housings are designed to mount to a flat frame with a couple of 6/32″ nuts and bolts.

They were designed to be printing in this orientation to uses minimal supports. (supports shown as dark orange in the picture above) These will be printed in ABS with the following printer Settings.

.20mm layer height
80% Infill
3 Top and Bottom Solid Layers
2 Outline/Perimeter Shells

The first finished print.

Here you can see the locking mechanism design.

The completed Thruster.

I made some quick weed guards to eventually test out.

Bilge Pump Thruster Kort Mount.zip (983 downloads )

Step files provided (click link above) for the MATE kids for your customization needs.

STL files for this for both versions of this design are available on Printables and can be found HERE.

I also made some changes to make this thruster setup MATE compatible to follow their prop guard rules. A few teams have used these successfully over the last few years.

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