RC Submarine Project - Type II U-boat | Episode 3: Water Tight Cylinder

[@beyond1957]

Impressive skill my friend.

[@pangeran_alfan16]

I enjoy your youtube channel, I hope your channel grows greetings from Indonesia

[@coast219]

Hi Nate. Beautiful set up. Waiting for the next installment.

[@neitoRC]

Thanks Romel!

[@SteveNeill]

Incredible Nate!

[@neitoRC]

Thanks Steve!

[@RCShipyard]

Well designed and well done. Keep up the good work!

[@neitoRC]

Thanks! I'm a big fan of your work as well!

[@Engineering_Science]

What kind of water proof rotary shaft seals are being used here? Where can I buy one and make one?

[@neitoRC]

The are called Simmerrings in Germany, otherwise known as cup seals/oil seals. You might be able to source them on ebay or from various O-ring suppliers. Personally I've stopped using them since they are hard to find here. All my current WTCs use brushless motors running in the wet.

[@Engineering_Science]

@@neitoRC Interesting. What is your experience running the motor wet? I'm designing a motor for making micro air bubbles used in hydroponics gardening system. Trying to find a way to not have the motor be wet and spin the shaft in the water while motor is submerged.

[@neitoRC]

@@Engineering_Science for brushed DC motors, I wouldn't recommend running in the wet since it really shortens the life of the motor (mineral build-up/corrosion in the brushes, etc). Brushless DC motors are better suited for running in the wet since there are no brushes making contact with the rotor. The 3-phase wiring system also prevent mineral build up at the motor terminals. I make sure to grease and lubricate the bearings on my brushless motors before and after every run, so far I've had no issues

[@knightwhite2045]

Hello, thanks for the video, it's great, I wanted to ask you a question, how does the ballast system work, why does a tube come out of the back? Does it work by compressing the air inside the tank? could you explain it? thanks my friend

[@neitoRC]

There is a water pump that pumps water into the tank, as the tank fills, the air inside escapes through the tube, which is attached to an outlet in the periscope. When the ballast tank is fully filled, the submarine is sitting with a bit of the periscope exposed above the water. This allows air to come back into the ballast tank when the pump is emptying the tank, thereby surfacing the sub.

[@knightwhite2045]

@@neitoRC okayy, Thank you very much friend, you have helped me a lot. 👌🏻

[@marketingpanasia5596]

Hello. I am also building RC Submarine and just like to know how to make end cap. is it 3D printed? if yes, how did you make it waterproof?

[@neitoRC]

Hello, yes the endcap is 3D printed. To make it waterproof you will have to print at 100% infill and seal the printed endcap with thick spray paint if you are printing with PLA. If you are printing with ABS/ASA/PETG, then you don't need to seal the endcap, except for the area where the O-ring sits.

[@ytflygare]

Can you please share the 3D files

[@neitoRC]

Don't have any plans on sharing them at the moment, perhaps in the future. Thanks for your interest though! :)