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3D printed Jetsprint jetboat

by JothamB, published

3D printed Jetsprint jetboat by JothamB May 4, 2018

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Thing Statistics

1111Views 193Downloads Found in R/C Vehicles

Summary

A personal project I've been working on. Posting here since there aren't many 3D printed jetboat designs out there, use with caution, as title says, is still a prototype!

I prefer using youmagine over thingiverse but I know many people still use thingiverse so here's the link:

https://www.youmagine.com/designs/prototype-jetsprint-jet-boat

Print Settings

Printer Brand:

Prusa

Printer:

Rafts:

Doesn't Matter

Supports:

Yes

Resolution:

0.25

Infill:

20%

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How did you design the prop? I'm trying to make some bilge pump powered kort nozzles and my prop design causes too much drag (and amp draw)

To get less amp draw try give the blades a lower pitch. Make the blades thinner, have narrow leading and trailing edges. A lower speed higher torque motor could also be a good idea. What KV motor are you using and how many cells or volts are you running it at?

  1. Make a hub to put the prop onto. I made a sketch, revolved it about its center. Applied a chamfer and a fillet to smooth the pointy end of it.
  2. Insert a helix. insert -> features -> helix
  3. draw a sketch at the bottom of the prop. Now use a sweep feature to extruded it along the helix.
  4. Draw on the top plane, select edges of the impeller and use the "Convert entities" button to make those lines appear in your sketch. Use the trim tool to cut off excess line pieces.
  5. apply radius to leading edge.
  6. use circular pattern tool to create 3 blades. I wasn't able to get the tool to merge result without errors. So I didn't merge, and then later used "combine" to combine the bodies into one body.

Does that make sense?

Probably the thing you really want to know how to use is the convert entities tool and the trim tool. They make life so much easier.

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