3D Printed RC Jetboat Build

[@SilverbackSasquatch19xx]

Dude no way I’m literally printing the back now I started with the front then I saw your video! Nice!

[@rcprinter]

have a fun build!

[@captainhowie175]

what motor is reccomended? i printed all the parts and now its time to buy the hardware

[@MCsCreations]

Dude, you just got another subscriber here. Nicely done! 😃 Stay safe there with your family! 🖖😊

[@rcprinter]

Thanks!

[@MonsterPartsRc]

There’s another jet design out there that has double props to help avoid cavitation (the air getting in the prop) I think you should try that one… it seems more effective… I think it’s the M-Jet Super sprint… don’t quote me yet…

[@WianBotha-z1w]

Cool boat busy printing it but just wanted to know what size screws and bolts you used on it

[@alessandrosperanza2808]

Very nice, what material is it? PLA i good for such application?

[@rcprinter]

yes its all in pla. The motor can get pretty hot so I'd reccomend adding a shim out of petg or metal or something between the motor and the mount plate so you don't melt it.

[@Jursaw]

This boat looks really cool! Would like a different design to fasten the top to access the inside

[@rcprinter]

agreed!

[@ItzPrizmm]

links to the mechanical parts of the boat?

[@Agloriousburrito]

To stop the motor from burning out you need a water jacket for the motor. It works by pushing water through a silicone tube that connects to a waterjacket on the motor. Then it exits the boat and starts the cycle again. No additional motors are needed just the water cooling system that works due to the force of the water when the boat moves.

[@rcprinter]

That's the next upgrade for sure.

[@MonsterPartsRc]

Interesting …. I’ve never seen anyone put CA glue on BOTH halves of something they were glueing together… nice project though… thanks for the video! I might have to add this one to the list!!

[@rcprinter]

glad you liked it

[@ObscruosDD]

Where do I get the code for it? And as well as connecting it for the device?

[@rcprinter]

www.thingiverse.com/thing:3328520 I use this RC radio controller which connects to my servo and esc: rcprinter.com/products/flysky-gt5-radio-controller-w-bs6-receiver

[@docfbi]

@@rcprinter and how do you use a 22 V battery if the receiver is powered from 3 to 8 volts? should I put an additional stabilizer?

[@rcprinter]

@@docfbi it depends what esc you have but the esc can likely provide power to the receiver @~5v. Mine does but I only run 2-3s lipos, not 22v.

[@fares-vo1ev]

can you give me info about the screws, paint and glue thanks

[@Qwarzz]

I built almost identical model some years ago. Using a pretty beefy inrunner motor with water cooling for both the motor and ESC. The damn thing pulls 150A from 4S battery at full throttle and even with the water cooling that is too much. And it really doesn't like any sort of waves either.

[@lucasvanhamburg4937]

how are you running 4s in a tiny boat like this

[@Qwarzz]

@@lucasvanhamburg4937 low KV motor. Need the torque but maybe I should try different impeller.

[@lucasvanhamburg4937]

@@Qwarzz low kv doesnt mean high tourque, if you want higher tourque try a larger diameter motor. but as you said a lower pitch impeller is a way easier sulution.

[@dastoast5273]

what kind of rod did you use for the steering

[@rcprinter]

Just a thin steel rod I had lying around that was for rc planes. I later upgraded to a stainless steel 1.5mm rod and its much better.

[@Skitalecc5]

brother, I don’t understand English, tell me what is the cheapest and best electronics that can be installed there?

[@nihathuseynli8696]

İf we do this brushless water all will be okay?

[@crashmania4019]

Great video, can anyone give me details what shaft i need for the prop?

[@rcprinter]

You will need a 4mm stainless steel shaft. Details are here: www.thingiverse.com/thing:3328520

[@jessieskindelien8152]

where did you get all the parts

[@donaldfite]

Do you have a list of hardware with links? I have the hull printed out and ready for sanding so I need to order some hardware to finish mocking it up... Also, what were your infill settings? I printed it at 75% infill and its kinda heavy for an empty hull. I was worried that if would break if I printed it at 15%.... Thanks!

[@rcprinter]

Sorry no hardware links... I printed this with two walls and standard 15-20%ish infill with a .4 nozzle. The boat is gonna be heavy already and 75% seems like quite a high infill rate IMO.

[@dastoast5273]

how did you fit the driveshaft to the Motor?

[@rcprinter]

Its a coupler for rc boat shafts. They make lots of different kinds that go from whatever size shaft your motor has to whatever size shaft your driveshaft is.

[@Evilslayer73]

Hi! wich glue you used in this video? thanks again for your help!👍👍

[@nathan1sixteen]

The “sucking air” issue may be cavitation from running too high of a KV motor. This is a common issue in jet-boats, and also boats and water pumps in general

[@lucasvanhamburg4937]

yeah an outrunner motor relies mostly on air to cool so its probably not a great idea to run a high power setup inside an enclosed boat without any airflow

[@nathan1sixteen]

@@lucasvanhamburg4937 it has nothing to do with in-runner vs out-runner but everything to do with propellor speed and pitch. I have run and have seen many people run out-runner motors in boats with no issues. The big thing is matching prop size with speed. Considering he didn’t use the suggested motor, he isn’t getting the results the designer got. 1400kv on 4s is ~21000rpm. 650kv on 6s is ~14,500rpm. Basically, the impeller is spinning 50% after on his setup causing cavitation

[@nathan1sixteen]

@@lucasvanhamburg4937 and if he’s only running a 3s battery (he never specified) it’s still spinning at ~15,500, which is still 1000rpm faster than suggested. And I’m sure whoever designed the boat didn’t calculate the best motor for the prop they designed

[@rcprinter]

@@nathan1sixteen yeah I was running 3s there.

[@kaiushow9930]

hello, What glue did you use?

[@rcprinter]

It's just a CA glue with an activator. I get mine from Canadian Tire here in Canada but you can pick it up at any hobby store.

[@pacman10182]

love how the hull is two slightly different shades of red, like you ran out of one roll part way though

[@rcprinter]

yeah, could have done a better job with paint for sure.

[@pacman10182]

@@rcprinter paint or print? the paint looks great

[@rcprinter]

@@pacman10182 Sorry, I definitely did use two different red filaments. The paint is crackling a bit, hard to see in the video maybe, could use a sanding and a final coat.

[@gamingisnotacrime]

how and where i can find methalic parts for rudder? do you have links all parts for building and collecting?

[@rcprinter]

sorry we don't have kits for this one yet. Just grab what you need off amazon or aliexpress.

[@gamingisnotacrime]

@@rcprinter i dont know what i need to buy, can you help me, or add some link on description?

[@GrahamWilson-f3x]

I know this is a little late but I was wondering what length screws you used to attach the jet to the hull and jet nozzle

[@rcprinter]

40mm screws for attaching the jet to the hull and 12mm screws for the end nozzle is what I used although I think 10mm would probably work fine.

[@GrahamWilson-f3x]

@@rcprinter thank. Building it now

[@TheRattleSnake3145]

No cooling for the motor?

[@rcprinter]

kzbin.info/www/bejne/r5ekoXyPj9-nbsk

[@andreasommavilla1209]

Ciao, ho stampato anche io la barca 😊.. pero ora devo comperare motore e esc.. Non mi interessa che sia velocissima .. è la prima che faccio e non ho nessuna esperienza rc .. Mi consigli un motore e un esc ? Grazie Andrea

[@rcprinter]

Everything I've tried needs added water cooling so I don't have a great recommendation for you other than to say you need water cooling.

[@andyrands]

Hi there. I think iv got your bot design as looks exactly like yours and even your logo. Did you shrink it down? Just yours looks smaller. What motore did you use if it was bigger? Or as it is. I'm carbon fiber ING the hull as going to reinforce it for rapids at my local river. Great vids mate

[@rcprinter]

hey I didn't shrink it down but I grabbed the model from here: www.thingiverse.com/thing:3328520 I tried a number of different motors you can see here: kzbin.info/www/bejne/aXiYfn-XgZ2YgdE&ab_channel=RCPrinter Regardless of what you choose for a motor, you're going to need to figure out some water cooling which I haven't been able to get to yet. Once water cooling is installed I'd probably go back to a standard 540 size motor for simplicity.

[@littlehammer3dmore191]

Would a 540 Motor fit with this setup? I have the skeeride and a few 540 motors. Im not familiar with the differences in the can sizes?

[@rcprinter]

Yeah I think it would fit. If you look at some of the makes on thingiverse there's people with what looks like 540 motors installed.

[@mcty19]

Very neat. Also, hello copper island!

[@rcprinter]

nice catch, you must be local :)

[@mcty19]

@@rcprinter Celista so pretty local 😉. I might have to take a stab at a boat here soon. Looks like fun.

[@rcprinter]

@@mcty19 nice that's real close. We were just out camping at scotch creek for 5 nights. I have two other boats to build soon so stay tuned for those :)

[@MrTetards]

Nice boat. I guess is missing a Watercooling for at least your motor.

[@rcprinter]

harder to cool an outrunner motor with water but I suppose I could have use a water cooled motor mount. I'll do some testing with different motors soon and see what works best.

[@MrTetards]

@@rcprinter cooling water jacket should work easly

[@rcprinter]

@@MrTetards on an outrunner motor?

[@TV-vg8wz]

hello I also made a boat of the same model. Please leave a comment on where you purchased the propeller product. I need to buy a propeller shaft But I don't know which product to use

[@rcprinter]

For this jetboat I used a 3d printed propeller and a generic 4mm stainless steel shaft cut and drilled at home. I got a bulk pack of 4mm stainless steel rods on amazon.

[@proastroz5759]

What's that spray you use after applying glue on the joints?

[@sed6]

It's called CA Kicker. It's a CA accelerant. He's using it wrong, glue should be applied to one half and the accelerants sprayed on the other half and allowed to dry quickly. Then the two halves are joined for an instant bond.

[@rcprinter]

yup its a ca activator spray. I used one called "instant bond" from canadian tire.

[@maxpetra9176]

I'm thinking about building something like this too, but as a complete novice to RC boats I do have a questions: Are there any waterproofing considerations for the internals? I mean, you do have a forward facing scoop on the top, so in rougher water... Also, do you have any suggestions for waterproofing the hole for the driveshaft? Is the paint necessary? I also saw you spray a coating over the propeller, does PLA have problems with water?

[@rcprinter]

I haven't opened the scoop hole yet so there's that but yes you do need to be careful. The biggest place I get water in is actually the driveshaft at the moment so I'm hoping adding grease in the space between the bearings will help. I don't the paint is absolutely necessary but I think it also helps with the waterproofing. PLA doesn't have problems with water as far as I'm aware.

[@demolitionbros586]

Can you list all the materials you used

[@pieprinz]

Did it float? I print the same boat last year but it sunken if yes why it yours waterproof and my one not?

[@rcprinter]

Yup it floats. Paint helps, and lots of glue. It leaks a bit where the shaft spins in the bearings.

[@Poulpc]

looks fun, nice video

[@rcprinter]

thanks!

[@CLPOZ]

were did you get the internal kit

[@rcprinter]

I just sourced the materials myself from Amazon and aliexpress

[@pieprinz]

Did it float I print the same boat last year but it sunken if yes why it yours waterproof and my one not?

[@rcprinter]

Floats really well... new testing video: kzbin.info/www/bejne/aXiYfn-XgZ2YgdE

[@Tam6.5]

Can you do mold from the boat to build a fiberglass boat ?

[@rcprinter]

Lots of people have definitely done that kind of thing but I've never tried it. If you check the "makes" on thingiverse I think you'll find some.

[@sed6]

Love this build! Put a small L-shaped trim tab on the stern and bend it down slightly into the water to get the nose down to keep the jet full of water. Also the proper way to use CA and kicker is apply glie to one part and spray the kicker on the other part then join the two halves.

[@rcprinter]

Thanks for the tips!

[@afklooney]

What diameter rods did you use to assemble the front and the top lid of the boat?

[@rcprinter]

Hmmm, I think I used bits of 1.75mm filament for the front nose and then it was either 1.5 or 2mm rods for the lid. Sorry can't quite recall, just threw in whatever fit nicely at the time! YMMV.

[@coopersharp2921]

what paint did you use for the boat? do you think it is watertight for quite deep?

[@rcprinter]

Seems pretty watertight. Not sure what you mean by deep but I'm sure fully submersed the lid will leak. The paint is just a cheap Rustoleum Painters Touch 2X paint/primer combo from Canadian Tire.

[@coopersharp2921]

@@rcprinter ok thanks, that helps!👍

[@shaynelhta]

to improve suction intake the back of the hull really should be almost flat. That V does not help anything.

[@travissimpson4599]

How Long is it? 1/10 scale?

[@rcprinter]

The hull is 20" long and the jet drive sticks out an additional 4" or so.

[@JordanWalsh-uz7gh]

How long did it take to print ?

[@rcprinter]

Its gonna be ~2-3 days of print time

[@JordanWalsh-uz7gh]

I've made and put the boat together today after printing it and they seems to be more water coming out of the side of the jet than the central jet hole . Would you have any idea why ? Thanks in advance .

[@oscarr2789]

BOM?

[@santini39]

Super sympa votre vidéo quel configuration électrique avez vous installé?

[@rcprinter]

I had a c3530 1400kv brushless outrunner motor and 30A hobbywing esc (16bl30) in there for the test but I blew the motor pretty quick so I'll have to upgrade soon.

[@santini39]

@@rcprinter ok merci pour votre réponse.

[@Bam13boy]

which motor will fit here ? Thanks

[@rcprinter]

I test a few different motors here: kzbin.info/www/bejne/aXiYfn-XgZ2YgdE&ab_channel=RCPrinter A standard 540 inrunner rc motor will fit. I haven't tried anything bigger. You definitely need water cooling though.

[@Bam13boy]

@@rcprinter thanks 🙏

[@67harlok]

something doesn't add up!!! Doesn't water come in from the tree? What gasket did you use? Water does not enter from Bowden of the rudder? No OR or gasket? The waterproof seal of the canopy? Can you show some mechanical details?

[@lucasvanhamburg4937]

when are you gonna make the robak?

[@rcprinter]

I have a short attention span... so I suppose when it becomes the shiniest object infront of me :) Its on the list for sure but the list only gets longer... never shorter

[@bastibayer8223]

My boot ist waterproof what schould i do

[@rcprinter]

you could try painting it, or just run a coat of epoxy over the hull. no matter what you do though you'll probably still get a little water leakage so make sure you use a waterproof esc.

[@randytracey5037]

is there a parts list anywhere for this build?

[@rcprinter]

This covers most of it: www.thingiverse.com/thing:3328520

[@randytracey6817]

@@rcprinter I have the 3d printed parts... I would like a list of hardware to complete the build, screws drive shaft and such

[@xavierdixon161]

I have so many questions how do we contact you?

[@rcprinter]

rcprinter.com/pages/contact-us

[@celedoniotourinodelrio7388]

Que medida de rodamientos lleva en estériles y interior

[@rcprinter]

The driveshaft uses 3 - 8mm OD by 4mm inside diameter bearings. I think mine were 3mm wide (MR84 bearings). More details here: www.thingiverse.com/thing:3328520

[@yashnivalkar1131]

There is huge problem with this model bro it wont go reverse. I am using bidirectional 30A ESC.

[@rav3n925]

Unless you fit a reverse bucket it will never reverse mate, Not a huge problem with the design, Just a feature of jet boats, haven't had any issues with mine

[@rcprinter]

Yup Rav3n is right. No reverse on these or any other RC jet boat I've built so far.

[@treerecords1551]

weigh the back down a lil more...or..make a scoop on the bottom

[@rcprinter]

new video on the jetboat: kzbin.info/www/bejne/aXiYfn-XgZ2YgdE cavitation isn't happening too often... I do have a bit more junk in the trunk (weight)

[@treerecords1551]

@@rcprinter it says video is private..

[@rcprinter]

@@treerecords1551 ok should be public in just a minute...

[@celedoniotourinodelrio7388]

Cuál es la medida de los rodamientos y del eje

[@rcprinter]

4mm shaft with bearings that are 4mm ID and 8mm OD. I think I used 4mm wide bearings but it may have been 3mm.

[@hessdominguez170]

I’m like #800🎉🎉❤❤❤

[@sl_st]

A pleasant result! The music is a little loud, but in general I congratulate you. Forgive me for my impudence. I'm just developing my project on jet propulsion and would be glad to hear your opinion. This is a radio-controlled submarine. I named it SL_ST NAUGHTILUS. I can't give links, KZbin deletes them.😢

[@rcprinter]

send it to me here: rcprinter.com/pages/contact-us

[@JamsterJules]

Top tip. Mute the music

[@NOMADisq]

Thanks

[@matthewgray1990]

Pro tip get high first and vibe with it

[@V8blue]

@@matthewgray1990😂

[@Budgetrcbuilds]

Dude check what I did with your boat !!!!

[@rcprinter]

Pretty awesome! Check out the new videos I did on the m-jet supersprint.

[@tomnicht1796]

Was ist das für ein Kleber

[@bhaveshsinhchavda5244]

Infill %

[@rcprinter]

hmmm, I wish I could remember exactly. I think I did 3 walls @ .2 layer and then just like 15-20% infill. That's probably what I would go with now.