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Printable Prop Saver for Quad Copter

by JoeMattie, published

Printable Prop Saver for Quad Copter by JoeMattie Jan 6, 2013

Description

Sick of breaking props while flying my quad copter indoors due to inclement weather, I designed a prop saver.

Please note, while this does work in the sense that my quad does indeed fly with the prop savers attached, I have yet to actually do a crash test with it.

If someone prints one of these and crashes it before I get a chance / have the misfortune to do so myself, please let me know!

Recent Comments

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You could always file them down

Screw threads ever chew into the o-ring?

thanks Joe.. simple and effective..:) just how it should be..:) Cheers.. Chris

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Instructions

Please note, these were designed specifically for this motor: hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=12916

Should work with minor modifications on other motors - YMMV!

Parts required per motor:
- 1x - Printed Prop Saver
- 2x - M3 or SAE #6 machine screws, around 20mm - 25mm long (3/4" to 1")
- 2x - Corresponding nuts (M3 or SAE #6, although you will probably need to find smaller than average SAE nuts, as the standard ones are too big)
- 1x - O-Ring. The ones I used were around 18mm in diameter and 2.3mm thick. Get these at an auto parts store (a real one, not Shucks or Autozone) to avoid a prop to the face!

I printed four of these at once, as my printer doesn't have a fan. I used black 3mm ABS plastic from protoparadigm.

My settings for printing (I used Kisslicer, but I'm sure any decent slicing software would work):

- 0.28mm layer height.
- 0.4mm width (I have a 0.35mm nozzle)
- 2 perimiters
- 100% infill


Edit: UPDATE, I have now crashed twice since installing my prop savers and can confirm that they do in fact work as intended! Save for a single busted O-Ring, the quad and its props are unscathed.

Update #2: Just uploaded v2. I've made this one a bit beefier after having one of the originals break.

Comments

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Greasetattoo on Feb 27, 2013 said:

Screw threads ever chew into the o-ring?

IronAwe on Jun 23, 2013 said:

You could always file them down

northshore on Jan 12, 2013 said:

thanks Joe.. simple and effective..:) just how it should be..:) Cheers.. Chris

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