3D printed RC airboat

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RC Airboats are cool. Not only they are simple build, but also give a lot of fun while playing with. This year I built a 3D printed one. No depron, no foam. Just a 3D printer and some lightweight PLA filament. And this is how it went.
Spoiler alert: this design wants to dive and it was not intentional.
Airboat 2023 STL files thangs.com/mythangs/file/954215
0:00 I like RC airboats
0:21 3D printed model 2023
2:02 What went wrong?
3:26 How to resolve problems?
4:25 Outro
#fpvuniversity #airboat #rc

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Опубликовано:

9 июн 2024

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Комментарии : 24

@BoilerFPV 6 месяцев назад

The motor seems to be pushing the bow down due to the moment arm caused by the thrust line. Tipping the motor forward to align the thrust line with the center of buoyancy would probably help.

@MCsCreations 6 месяцев назад

Well, even conventional PLA isn't exactly waterproof, Pawel. People who usually 3d print boats use other materials, or apply a thin coat of epoxy... Sometimes even glass fiber. Another thing is the spray foam, I don't remember the name... They fill the hull with it with the exception of the places for battery and electronics. I don't know close to enough about boats... But there you go, that's what I know. 😬 But, absolutely, improve it! Keep going! 😃 Anyway, stay safe there with your family! 🖖😊

@MattiasKallio 6 месяцев назад

Ok, my last winter-rc-toy had two propellers and two PET-bottles, it did the same thing (but it worked well on ice). So this years winter-rc-toy have two props in front to stabilize on both pitch and roll. Just put Betaf... I mean iNav on an FC a prop in front and do some MMIXing. ;)

@rwflynfrog7484 7 месяцев назад

How about brushing on some varnish as a water seal?

@Videolinquency 7 месяцев назад

The thrust line ought to do something here - shouldn't a slightly downward pointing prop lift the bow?

@FPVUniversity 7 месяцев назад

Difference would be marginal. Bow is just too heavy and sith too deep in the water

@rckyfpv 6 месяцев назад

Try to make it a submarine, and it will float :D

@altermannfliegt3927 6 месяцев назад

Nice, I build one with two rudders in 1985. Could you build something larger with 10 to 12 inch prop and lower kw? It would sound better and some finns could improve the stability.

@offaxisfpv 6 месяцев назад

FUN YA!!! NICE DESIGN

@offaxisfpv 6 месяцев назад

mine was successful mostly. and on to round 2 soon. thanks for watching

@christophertelford 6 месяцев назад

Here's my smaller airboat printed with regular PLA; ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-SmC7551AdwU.htmlsi=GdG_3i8Hrb9jqvtq Someone else's design that I stuck inav in.

@christophertelford 6 месяцев назад

My limited research told me that the thrust to weight ratio should be slightly less than 1:1 and that the centre of gravity should be about 1/3rd or 1/4 from the back rather than the front like on a plane. I didn't have any problems with weight and mine weighs about 600 grams which feels heavy for it's size.

@Terry_Fritz 6 месяцев назад

Looks like other people made the same suggestions I was going to. I would have used a pusher prop with rudders behind the prop and pointing up to force the nose to rise. It would take a few coats of epoxy to waterproof the hull and the extra weight would negate the gains made by using LW-PLA. Looks good at the start before it got soggy so I think the hull size and ratio are correct. Air boats in the swamps in the US are about the same length/width ratio.

@johnchandler4565 7 месяцев назад

I guess painting the hull would seal it from water ingress (unless it is getting in via the hatch seal) and maybe lengthening the hull might reduce the nosing over, probably at the expense of maneuverability. Just guesses on my part, as I've never dabbled in air boats. Keen to see how you resolve this - I know you will beat it 🙂.

@FPVUniversity 7 месяцев назад

I will make it bigger for sure

@plymouthrovadventures.646 6 месяцев назад

Nice. give it a little more down thrust..

@wattage2007 6 месяцев назад

Few sheets of fibreglass and a bit of resin?

@yucekaya1622 5 месяцев назад

The front of the boat is heavy and there is no protective face😲

@daveopie1234 6 месяцев назад

My next project is likely going to be an airboat, so I've been researching. At first I considered 3d printing the hull. But that makes the boat heavy, and hard to modify. Instead I'm just going to use Styrofoam. Is 3d printing an airboat possible? Sure. But I don't think 3d printing is the right tool for this particular job.

@matty2808 6 месяцев назад

Cześć, potrzebuje sprawnej odpowiedzi, kontroler lotu jaki najlepszy? Mamba f405 mk2 czy speedybee f405 v3? A może coś innego? Będę budować drona 7", czy pod niego starczy 40-50A esc?

@FPVUniversity 6 месяцев назад

ale co to znaczy "najlepszy"? Najlepszy pewnie będzie Matek H743-Slim