Air boat / Swamp boat

by SlightlyAbnormal, published

Air boat / Swamp boat by SlightlyAbnormal Jul 21, 2017
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4401Views 1152Downloads Found in R/C Vehicles


My parent's front yard will flood with up to 4 inches of water in heavy rain. I've told my dad for years that it would be a lot of fun to run an RC boat when this happens. I decided to make one for him for father's day. I decided on an airboat to avoid the prop getting fowled in debris or weeds and to allow if possible for it to slide across the grass from his front door to the temporary lake.

To complete you will need:
Micro servo
5" propeller (I used a 5045x3)
Motor (I used a 2204-2300 multi-rotor motor)
ESC (I used a 20amp multi-rotor esc made bidirectional with blheli)
RX of your choice
RC car body pins
3mm screws
Battery (I used 3s 1300mah)
Glue for plastic components

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At least the bottom 3 pieces of the hull need to be printed at 100% infill to make them water tight. The other components can be done however you'd like, I want with 50% for most.


All of the parts with holes are intended to be screwed together with 3mm screws. The hull is intended to be glued together.

Painting the hull will help seal potential leaks and make it more smooth.

Low temp hot glue can be used to seal the wiring holes in the radio box.

How I Designed This

Fusion 360

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This is a very well designed model! I especially like the clever routing of the motor wires through the upright. I assume I should fill the hull with expandable foam so it won't sink if it flips? Or maybe some of those inflated plastic pillows used for packaging? I don't have any experience with boats and I would hate for this to end up at the bottom of the pond. Thank you for the upload!

All I got to say, again is, what a great design! This has spawned a racing club at our rc airfield. FPV also! Running on 5S 1800mah and hitting close to 40mph. So far, I have printed 4 and my friends have printed 2 or 3. Should have about 12-18 boats. Pretty cool idea you had there Slightly Abnormal! Wife even made me make her one in pink with grey camo. Pic to come! Thanks again! You need to set up the tip function!lol

That is awesome! Thanks for sharing.

I never thought this would be anything special. I made it as a father's day gift for my Dad to run when his front yard floods.

How are you guys sealing the hull?

After printing a few of them now, I'm a real novice at this, and realized high temp near the 250's, is sealing almost completely. But being unsure of my printing abilities, of which I have NONE, I've used XTC-3D coating. One layer should fill in the gaps perfectly. But depending on what you see, you can add a second and sand it. Works perfect. Added a couple 1mm tall X 3 inch strip of plastic under the hull rear. It helps a lot at high speed, keeps it going straight without a slight breeze that will spin it out. More pictures and FPV coming. You got a great design!

I made this as a gift and I don’t have it or photos.
I used a Tupperware style container that deli meat comes in to mount the electronics.

It is an awesome design! Should be done printing it by the weekend.

Would you happen to have a pic of how you set up your electronics?

someone should post a video of one. id like to see if it would be worth printing a couple to use up my quad copter motors and bag of props

Thanks - challenge to print in ABS without warping. Great design and works well. Thinking of adding outriggers to lift it out of the water and reduce drag. Perhaps make them removable so you can switch to winter skis :)

whats shell thickness fella

I use Simplify3D. I looked and I don't see a setting for shell thickness. I used 3 shells.