This propeller is small, its diameter is 142mm (about 5.6 ") and it is built for my trolling engine made of self-construction, DC 24V, power 140W, designed for a small canoe, (Sevylor MarVista) So far I have used a small Sevylor 3 wing propeller of about 5 ". (128 mm); Same, I've been working with a 7.25 " propeller, but that's too much.
Two months ago, I bought a 2-wing propeller for Watersnake 18lb mini, its diameter is 6 ", I will install it on a 24-volt Sutrak air-conditioning, DC engine.
The propeller hole is large to have the material homogeneous; I will install a hard PVC shell , and possibly a brass tube into the propeller hole. Installation of the rotating part of the gasket in the propeller is possible, but at the end of the shaft of the motor must be a square part and thread, and without propeller safety pin.
All this is at the amateur base. 3d print cost me $ 10; I've found the propeller drawing on the net, but he had a lot of mistakes, I had to fix it a lot. With Rhynocerus program I reduced the propeller, and especially the propeller PItch , and finaly convert in STL fajl ; It's a good thing to check ( and repair ) on the some web site the STL file from the Rhinocerus program...
there is photo after glitering...
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