Homemade ROV engines with Bilgepumps - simple & easy thruster 

Keep me informed!

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! 😃👍🏻

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.

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: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Hx78yZjKz-w.html If so, please ask there... 😅

That’s right. Deepest turn so far was 15 meters. Didn’t seem to be a problem at all.

Seaflo bilgepump Motors. First 350 gph, now 1100 gph. Check out my latest video for that.

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.

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. :-)

Maybe… 🤷🏼‍♂️

Water cools the engine.

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.

Sure: the Eken h9r action cam and the EYOYO fishing cam with 30 m cable.

EBay

Yep - über einen Spannungsregler

Ask the manufacturer seaflo.

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.

Also eigentlich nicht.

@@agermangineer Hab das Problem gelöst, des lag daran, dass der Abstand zwischen Motor und Propeller zu groß war

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.

Eine Zeit lang vermutlich schon… manche nutzen diese Brushless Motoren sogar „nackt“ unter Wasser. Von daher würde mich das nicht wundern.

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

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