3D Printed RC Jetboat Build
ฝัง
- เผยแพร่เมื่อ 15 ส.ค. 2022
- In this video we take you through the build and initial test run of our 3D Printed Jetboat by designer Bashtech. The boat functions quite well and is a tonne of fun to drive however the little motor I put in there was too small and we ended up burning it out pretty quickly so we'll have to upgrade it in the next video and do a longer test.
The build is pretty simple for this boat. You glue the main hull pieces together, paint if desired, add a 4mm driveshaft with a couple of bearings and a 3d printed prop, throw on a standard servo, hook up an esc and receiver, screw the top down and away you go.
If you're looking to build one of these yourself you can find the design files here: www.thingiverse.com/thing:332...
Music from Uppbeat: uppbeat.io/t/moire/summer
License code: VQFGKYABXLDHXAHH - วิทยาศาสตร์และเทคโนโลยี
I designed and printed one of these. It performed very well. And then I redsigned the prop and nozzle to optimize the power output then the power got insane to the point that if the bough ever hit a wave taller than it dead on it would dive under the water for 5 feet and come up again. Causing the need for a hull redesign to match the power upgrade.
mo power mo problems :) also mo fun
Dude no way I’m literally printing the back now I started with the front then I saw your video! Nice!
have a fun build!
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.
Thanks for the tips!
This boat looks really cool! Would like a different design to fasten the top to access the inside
agreed!
Dude, you just got another subscriber here. Nicely done! 😃
Stay safe there with your family! 🖖😊
looks fun, nice video
thanks!
Very neat. Also, hello copper island!
nice catch, you must be local :)
@@rcprinter
Celista so pretty local 😉. I might have to take a stab at a boat here soon. Looks like fun.
@@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 :)
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.
how are you running 4s in a tiny boat like this
@@lucasvanhamburg4937 low KV motor. Need the torque but maybe I should try different impeller.
@@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.
Hi! wich glue you used in this video? thanks again for your help!👍👍
what motor is reccomended? i printed all the parts and now its time to buy the hardware
İf we do this brushless water all will be okay?
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?
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.
Can you list all the materials you used
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.
That's the next upgrade for sure.
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!
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.
Very nice, what material is it? PLA i good for such application?
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.
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?
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.
Great video, can anyone give me details what shaft i need for the prop?
You will need a 4mm stainless steel shaft. Details are here: www.thingiverse.com/thing:3328520
Super sympa votre vidéo quel configuration électrique avez vous installé?
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.
@@rcprinter ok merci pour votre réponse.
What diameter rods did you use to assemble the front and the top lid of the boat?
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.
what kind of rod did you use for the steering
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.
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
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: th-cam.com/video/3G5MLaL8eKo/w-d-xo.html&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.
how and where i can find methalic parts for rudder? do you have links all parts for building and collecting?
sorry we don't have kits for this one yet. Just grab what you need off amazon or aliexpress.
@@rcprinter i dont know what i need to buy, can you help me, or add some link on description?
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
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
@@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
@@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
@@nathan1sixteen yeah I was running 3s there.
how did you fit the driveshaft to the Motor?
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.
love how the hull is two slightly different shades of red, like you ran out of one roll part way though
yeah, could have done a better job with paint for sure.
@@rcprinter paint or print? the paint looks great
@@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.
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
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.
@@rcprinter thank. Building it now
What's that spray you use after applying glue on the joints?
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.
yup its a ca activator spray. I used one called "instant bond" from canadian tire.
what paint did you use for the boat? do you think it is watertight for quite deep?
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.
@@rcprinter ok thanks, that helps!👍
Can you do mold from the boat to build a fiberglass boat ?
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.
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
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.
Did it float I print the same boat last year but it sunken if yes why it yours waterproof and my one not?
Floats really well... new testing video: th-cam.com/video/3G5MLaL8eKo/w-d-xo.html
Did it float? I print the same boat last year but it sunken if yes why it yours waterproof and my one not?
Yup it floats. Paint helps, and lots of glue. It leaks a bit where the shaft spins in the bearings.
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
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.
Nice boat. I guess is missing a Watercooling for at least your motor.
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.
@@rcprinter cooling water jacket should work easly
@@MrTetards on an outrunner motor?
How long did it take to print ?
Its gonna be ~2-3 days of print time
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 .
How Long is it? 1/10 scale?
The hull is 20" long and the jet drive sticks out an additional 4" or so.
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?
is there a parts list anywhere for this build?
This covers most of it: www.thingiverse.com/thing:3328520
@@rcprinter I have the 3d printed parts... I would like a list of hardware to complete the build, screws drive shaft and such
were did you get the internal kit
I just sourced the materials myself from Amazon and aliexpress
to improve suction intake the back of the hull really should be almost flat. That V does not help anything.
Where do I get the code for it? And as well as connecting it for the device?
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
@@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?
@@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.
BOM?
when are you gonna make the robak?
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
Can you list all the electronics for the rc boat
servo: rcprinter.com/products/20kg-digital-servo-ds3218-with-metal-gears-and-metal-servo-arm
here I tested different motors: th-cam.com/video/3G5MLaL8eKo/w-d-xo.html&ab_channel=RCPrinter
I find these brushless escs are good for boats: www.aliexpress.com/item/1005006645216447.html
@@rcprinter thanks
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, TH-cam deletes them.😢
send it to me here: rcprinter.com/pages/contact-us
which motor will fit here ? Thanks
I test a few different motors here: th-cam.com/video/3G5MLaL8eKo/w-d-xo.html&ab_channel=RCPrinter
A standard 540 inrunner rc motor will fit. I haven't tried anything bigger. You definitely need water cooling though.
@@rcprinter thanks 🙏
Top tip. Mute the music
Thanks
Pro tip get high first and vibe with it
Que medida de rodamientos lleva en estériles y interior
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
I have so many questions how do we contact you?
rcprinter.com/pages/contact-us
Cuál es la medida de los rodamientos y del eje
4mm shaft with bearings that are 4mm ID and 8mm OD. I think I used 4mm wide bearings but it may have been 3mm.
weigh the back down a lil more...or..make a scoop on the bottom
new video on the jetboat: th-cam.com/video/3G5MLaL8eKo/w-d-xo.html cavitation isn't happening too often... I do have a bit more junk in the trunk (weight)
@@rcprinter it says video is private..
@@treerecords1551 ok should be public in just a minute...
My boot ist waterproof what schould i do
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.
Infill %
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.