Homemade ROV engines with Bilgepumps - simple & easy thruster
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- čas přidán 30. 03. 2021
- Music credits go to:
Asher Fulero - Lukewarm Hazy - • Video
Dan Lebowitz - Don't Ya Bite Now - • Video
Just a quick video on the side since many asked about the propellers and the couplings. So I hope this clears things up a bit.
About cutting up the bilgepump: there are many many other videos out there so feel free to check that out.
Any further questions?
Check out my other ROV videos:
ROV Thruster Housing - • ROV Thruster Housings ...
ROV Lighting - • SeaPerch ROV Lighting ...
ROV Controllers - • ROV arcade and basic C...
ROV SeaPerch - • Extreme SeaPerch ROV -...
ROV Depth Gauge - • Selfmade ROV DEPTH Gau...
ROV Tether Projects - • ROV Tether Projects To...
ROV Wiring - • Wiring your ROV contro... - Věda a technologie
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Wow, i love it. You would think building a vehicle that goes underwater... and keeps functioning, would be difficult. I dont know if it's your voice or the style of presentation you hold, but ive learned so much from your videos and it doesnt feel impossible. This videos a perfect example, why use something else when a bilge pump motor is meant to go in water, just adjust it so it spins a prop and attach cabling to modify spin rate and youre good to go.
building my own ROV atm inspired by yours alot! im about 70% done so far.
Keep me informed!
Wow. Great video. You are a genius.so cool.👏👏👏
That’s awesome. Thank you.
Cool, so simple.
Congratulations mate. It is very useful information
so good having some problems finding correct propellers
Where did you get the propellers from
Hi - great videos - thank you. I am just beginning to learn about ROV’s. I will be moving on to a sailboat in a few months and thought this would be a great opportunity. Can you please guide me to the best place for the original design and build of the ROV? I like the size of what you have built and think it would work well for me. I appreciate the jump the start. Thanks!
Sure: check out www.Seaperch.org for the basic construction manual.
I will post a „complete-build“ Video for the more advanced Version very shortly, so you might consider subscribing. 😬
In the meantime, you might also find help in my other ROV-videos.
Clear sailings to you! 😃👍🏻
Hey, thank you for this !
I begin to build my rov like yours, but i dont find the propeller, can i put other propellers with 4mm or you now where i can found the same like you ?
Thank you !
From France !
Bonsoir!
Sure, any 4 mm propeller will do, as long as it is not too small or too large…
It’s true, those are only available from time to time… I got mine mostly over eBay. Robbe and Graupner. 50 - 60 mm are alright.
Your cool af
One question about these thrusters; Bilge pumps normally run in pretty shallow water so they don't have the best seals and you don't seem to be oil filling them and pressure compensating them. Are you just limiting your ROV to very shallow depths and putting up with a bit of leakage?
That’s right. Deepest turn so far was 15 meters. Didn’t seem to be a problem at all.
I found a few Amarine-made 24V DC Submersible Deep Well Water Pumps on a vacated farm. Would those work? Just curious. Thanks you for the video. Great info.
Maybe… 🤷🏼♂️
Thanks for the video !
Could you please tell me the type and the reference of motors that you used ?
Seaflo bilgepump Motors. First 350 gph, now 1100 gph. Check out my latest video for that.
Hi. Good job. Do you think i could take 4 of them to power my itiwit 3 kayak(2 1/2 persons) at sea? Will the thrust be enough?
I doubt that! Even with 3 Amp motors you will probably only get a thrust of about 4 pounds… any wind gust will overpower that.
I mean, you can try but you can also get simple 12 Volt outboard motors for small boats online. Those provide at least 30 pounds of thrust. My guess is you’ll be better off with that. :-)😀
@@agermangineer yea i figured as much. was trying to find something really cheap and combine the low cost with the joy of building it :) i will figure out something.
I am looking for that exact same motor, it seems it is unavailable to me. It should be possible to use a 500GPH Seaflo Bilge Pump correct? I may in theory need to step down that voltage using resistors or another method? I am worried that 500 GPH is too much power.
The 500 GPH pumps by seaflo are available on Amazon and eBay. However, they got a bit pricey lately. Usually they cost around 15 Euros. Also check the 350 and 1100 GPH versions for comparison.
The voltage can easily be adjusted with a proper DC fan-speed regulator. Or any voltage-regulator fit for the 1-3-or 5 Amp current drawn by the different pump-versions.
Check out my other videos for more info. :-)
you'd get a fair bit more efficiency/thrust if you reduced your gap between your prop tips and the housing. In fact, that might be a reason to go with an aircraft, or larger watercraft prop, so you can square the ends off so they run really close to the housing for the length of the cord of the prop. These types of propulsion are used a fair bit on things like tugs and are called a "kort nozzle"
I know! That’s a great comment, because that‘s all true.
But a key problem here is the motor. It’s built for a tiny little drum with very low friction. A wider propeller increases the current in order to cope with the higher resistance.
A slightly more experienced ROV builder (than me) suggested: never to use props exceeding 55 mm width. With 62.5 mm I have already overstretched that.
And since these motors are relatively slow they work well with props with a high angle of attack. Drone props, I believe, have a much shallower angle of attack decreasing the resistance of course, but also the performance.
So in total I wanted to stay safe not to overload the motor and still get good performance out of the rpm.
Nonetheless they probably both work equally fine.
@@agermangineer David Gerr wrote an excellent book called "The Propeller Book" that I believe would give you everything you need to know to calculate that precisely (and either engineer or select a prop that would maximize its efficiency).
@@VigilanceTech sweeeet! Thanx! 😀👍🏻
@@agermangineer One solution is, if you're still in touch with your friend with the 3D printer, you could just print a set of smaller nozzles to fit the prop. There's a number of free cad programs you can use to design stuff for printing. I find Fusion 360 to be pretty easy to use.
This is awesome..... but could you please make another video regarding how to connect the arcade controller to the motors with an appropriate circuit diagram and the required components
Dude I posted the wiring, though of course not professionally.... and the components... are basically given... sorry, but those videos about wiring, controllers and the engines are final.
Though not to leave you in the dark: what else do you want to know? 😀
@@agermangineer just wanted the circuit diagram and list of components except the arcade switch , stuff like relays n all.....please help....I've already ordered the arcade controller
@@shravanpoovaiah9329 well you need 12 Volt DPDT relays, like mentioned in the video, and a lot of wire. Along with the joystick that is all. 🤷🏼♂️😀
@@agermangineer ok last question...😅...how many 12v dpdt relays......and could you please make a video regarding connections
@@shravanpoovaiah9329 ok question: have you seen this video: czcams.com/video/Hx78yZjKz-w/video.html
If so, please ask there... 😅
i have a problem, when i start the motor for a long time the shaft of the motor is very hot but when i start it in the water there is no problem at all. do you know the cause?
Water cools the engine.
Where did you order your props & coupler from?
EBay
May I know the type of you camera for underwater? 🙏🙏🙏
Sure: the Eken h9r action cam and the EYOYO fishing cam with 30 m cable.
great project, i wonder what if you just install the bilgepump (not reassembly by other propeller). Will the thrust just same or weaker or maybe stronger?
Inside the pump is just a little pelton turbine. Meaning you have very little thrust:
forward you have water exiting a hole and reverse… suction into a hole - no thrust and a bit of thrust through the pump intake… going into a different direction.
So: I wouldn’t recommend it. 😀🙋🏼♂️
oh i see@@agermangineer , i want to make sea scooter. Is it recommended use this type of bilge pump for cheap and simple project? maybe need more than two of them 😁
@@imacoid well, if you use one for each direction (forward only) and if you have a good power supply with a short tether you will be able to operate it. A colleague of mine did that to steer a small buoy.
i love to hear it@@agermangineer , what do you mean by good power? it is possible to use more than 12v? and good tather mean change the cable to the bigger diameter i guess. Sorry if you hard to understand my english, i'm Indonesian
@@imacoid no 12 volt is correct. The question is, can the power source handle several Amperes? And yes, a good cable is not too thin.
Hello! Does these engines support reverse trust? if so how can you make it?
If no how can the submarine go back up or down?
Just watch from 3:07 or check out my other videos. Switch the polarity of the cables and you have forward and backward motion.
@@agermangineer Thanks!
@@agermangineer Do you think if i go 7 or 8 meters deep in water these pumps will hold the pressure? or theyll break?
@@nicker3115 I’ve had them 15 m deep. No problems down there.
How deep will it go until water gets inside the motor and shorts it out?
Ask the manufacturer seaflo.
Ist das bei dir auch so das, die Motoren anfangen zu vibrieren, wenn sich die Propeller drehen?
Also eigentlich nicht.
@@agermangineer Hab das Problem gelöst, des lag daran, dass der Abstand zwischen Motor und Propeller zu groß war
Kann man die Geschwindigkeit der Motoren regeln?
Yep - über einen Spannungsregler
Würden die Motoren bis 50m Tiefe funktionieren 🤔
Eine Zeit lang vermutlich schon… manche nutzen diese Brushless Motoren sogar „nackt“ unter Wasser. Von daher würde mich das nicht wundern.
Can i bu your motor sir ?
Can i buy your motor + propeler sir ?
@@jugul07 you can buy the whole thing on eBay. Not just the engine though… sorry. But thank you for the interest. 😀👍🏻
www.ebay.de/itm/ROV-Uboot-Drone-submarine-Seaperch-DIY-Eigenbau-mit-Cam-LED-Touch-Muh-Hull-/255417661986?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=707-127634-2357-0
@@agermangineer thank you sir
Und welche Propeller nutzt du
Robbe Racer rechts 62,5 mm M4
Oder Graupner…
@@agermangineer Macht des einen Unterschied, ob ich links laufend oder rechts laufend nehme?
@@sirmoritz122 nö… musst nur richtig polen. Hätte ich damals links UND rechts kriegen können, hätte ich je 1 genommen.
@@agermangineer Du meinst am linken Motor einen rechtsdrehenden und am rechten Motor einen linksdrehenden, damit sich der Radeffekt aufhebt?
@@sirmoritz122 ja, aber nur aus „optischen“ Gründen. Viel Radeffekt oder Torque hat das Ding nicht