ICTINCO ll Submarine Build

[rwtdiver]

Japanese article on pitch control using shifting weights

Way to complicated for what I need!

Rob
"Firemen can stand the heat."

[redboat219]

Japanese article on pitch control using shifting weights

[RCSubGuy]

Shifting weights would work, just not quickly. Precise and fast reaction to pitch alteration would not be feasible without some serious engineering. It should be very possible with a high torque servo and an AD2, but you'd likely want to make it a waterproof servo in the wet.

If you'll be runner her at scale speeds, I don't see an issue with that setup, but once you get water flowing over the hull, you begin to have to contend with hydrodynamic forces over the hull, which can cause wonky things to happen very quickly.

[rwtdiver]

Hi Bob,

If you go back to page one of this build blog you will see a YouTube video that Romel (redboat219) put up that showed the Ictineo ll that this guy built that ran on the surface with 90% of the sub submerged. He did not show it going underwater at all.

My plain was to set this boat up the same way, so I guess you could say it will be a surface runner, even though 90% of the boat is running submerged. I do not think I will get to elaborate on a ballast system. It's going to be interesting for sure!



Romel,

I had no idea the real (full scale boat) boat used weight shifting!? So maybe use a piston type ballast system? Piston system in the stern and a piston system in the bow!? Could be done! This whole build is sort of an off the wall build to start with. Love this kind of stuff!! :-))

Thank you, guys, always appreciate the great ideas and input!

Rob
"Firemen can stand the heat."

CORRECTION: I stand corrected! The ICTINEO ll in the video does have some sort of ballast system which did allow it to go fully submerged!

NOTE: NOT SURE WHAT I AM GOING TO DO JUST YET! This has been one of those builds that builds as it goes!!



I have changed my mind on this possible design! More to come!

[redboat219]

I'm not super-familiar with Ictineo... I assume it used ballast alone for depth control? No planes? What are your thoughts for depth and angle-keeping?

Oh, wait... did you say she was a surface runner only? I can't remember.


Bob

The real one used shifting weights for pitch control.

[RCSubGuy]

I'm not super-familiar with Ictineo... I assume it used ballast alone for depth control? No planes? What are your thoughts for depth and angle-keeping?

Oh, wait... did you say she was a surface runner only? I can't remember.


Bob

[rwtdiver]

More progress on the OCTINEO ll today!



I have the preliminary rudder section printed out and a pre-fit check on the hinges.

Rob
"Firemen can stand the heat."

[rwtdiver]

Rob, I saw and took a picture of both replicas in Barcelona back in 2006. Boy was impressed, especially with the engineering in II, Keep up the great work!

vital.spark,

Thank you for your remarks! The Ictineo ll has been a real challenge from the start. The files for this boat where for a 1/2 cut-a-way static model showing the complete exterior and interior. Sizing the boat up to what I have (168%) and slicing so that I could have a complete hull and have the sections go through my Dremel 3D40 has been a time consuming challenge for sure.





I am really wanting to do more of the pre-WW 2 (1800's/1900's) type boats. I really like the looks of the older boats and there histories and the progression!

Rob
"Firemen can stand the heat."

[vital.spark]

Rob, I saw and took a picture of both replicas in Barcelona back in 2006. Boy was impressed, especially with the engineering in II, Keep up the great work!

[rwtdiver]

Tonight, I finally got the motor shaft and stern section lined up with the prop! The prop is mounted to the drive shaft with a pin which will allow the shaft to be dismantled from the prop so that if any repairs are required down the road the entire system with the motor will come out.

https://www.youtube.com/watch?v=C29XDw7zCTE

Next will be to permanently mount the completed drive system to the stern section of the hull. Next part of the stern will be to install the rudder and the control linkage.

Rob
"Firemen can stand the heat."

[rwtdiver]

Tonight, I made some upgraded changes to the 3D printed rudder section.



I replaced the original 3D printed pin for the hinge with a brass pin and installed a brass sleeve in the hinge itself. This will be much stronger and operate with less slop and friction.

Rob
"Firemen can stand the heat."

[rwtdiver]

I made a little head way as to my design and installation on the propulsion system (no set in stone as of yet)

https://youtu.be/_ZjXBTUZ1Ss

I took a video of how it might look and it's functionality at this point!

Rob
"Firemen can stand the heat."

[JHapprich]

Id say the blades actually sat in between those forks and the prop looked more like the Jules Verne Nautilus

[rwtdiver]

I have started to do some pre-design applications for the propulsion system on the ICTINEO.



These photos show a possible set up for the motor!? The stern section will be removable to gain access to the WTC.

Rob
"Firemen can stand the heat."

[rwtdiver]

Romel,

Thanks for the great photos! It's going to be interesting to see how well that works!?

Rob
"Firemen can stand the heat"