Japanese Sen Toku I-401 Submarine Build

[Sinksalot]

Yea 1/72 is big when printing a I-400. I got a 1/48 scale IJN I-19 coming soon. Now that is a big sub 7 !/2 feet.

[rwtdiver]

Sinksalot,

Yes that certainly was an option! But I have chose to reduce the size of the sub to a more manageable size due to size restriction in my shop/hobby room!

Rob
"Firemen can stand the heat"

[Sinksalot]

Romel,

Not sure just yet! Ran into a snag with two hull sections that will not print on my Dremel 40 printer! At this point I will have to reduce the size of the sub to accommodate the print size! Not sure just yet the scale it will be!

All part of building submarines I guess, work at it until you get it!!

Rob
"Firemen can stand the heat"

Why don't you cut the 3D model part to fit your printer.

[rwtdiver]

Rob,
what ballast system will you be using to float your boat?

Romel,

Not sure just yet! Ran into a snag with two hull sections that will not print on my Dremel 40 printer! At this point I will have to reduce the size of the sub to accommodate the print size! Not sure just yet the scale it will be!

All part of building submarines I guess, work at it until you get it!!

Rob
"Firemen can stand the heat"

[redboat219]

Rob,
what ballast system will you be using to float your boat?

[rwtdiver]

Well! It seems this build blog is really going astray!

Rob
"Firemen can stand the heat"

[cheapsub]

More POWER!
I am going to GAS you up :)

https://www.ebay.com/itm/Mountain-Bike-Gas-Nozzle-Head-Adapter-Fast-Inflator-CO2-Cylinder-Pump-/255010039478?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0

[Sam Victory]

Nice set up Sam.
Soldering would be better than glue when joing brass together.

Think you need to install a a pressure regulator to throttle down the release of gas from your impulse bottle. Too much and your shuttle will go flying off like a spigot bomb. Also if you intend for your plane to glide it has to be light but strong to survive the sudden acceleration of the cat shot.

Simple option

Thanks for your reply, yes, the energy of compressed gas is huge, it might be feasible to have the poppet valve release only a small amount of gas at a time, i.e. an instantaneous release. Inspired by Mr. David's long ago mechanical torpedo launch system, or launch with a solenoid valve, that is an instantaneous injection of a small amount of gas.




So no matter how it is modified, the complexity of the whole system is definitely increased. I let the wheels of the aircraft launcher stuck to the launch track, the launcher and launch track are equipped with magnets, all to improve the stability of the aircraft when gliding. Speaking of poppet valve welding, I did design that kind of welding poppet valve, but this kind of valve has the possibility of gas leakage because there is no O-ring seal.



The valve I am currently designing has an O-ring, so it will not leak and thus not waste gas. I use the casting glue (I do not know if there is any sale in other countries) has super waterproof, sealing, super bonding ability, strength is comparable to welding (so also called welding glue), can only be cut with a chainsaw!

casting glue：

[Sam Victory]

Thanks for the great drawings Sam V.

My intentions with boat is to maybe get it in the water with power, if not just a somewhat detailed model! Thanks again for all the input!!

Rob
"Firemen can stand the heat"

You're welcome sir, I value the function of RC submarines as important, even more important than the shape of the submarine. I am not satisfied with only the basic functions of the rc submarine. More features bring more fun and more interesting. I was thinking it would be nice if this forum had the ability to send emojis so that our conversations would be fun and more lively!

Sam

[redboat219]

Nice set up Sam.
Soldering would be better than glue when joing brass together.

Think you need to install a a pressure regulator to throttle down the release of gas from your impulse bottle. Too much and your shuttle will go flying off like a spigot bomb. Also if you intend for your plane to glide it has to be light but strong to survive the sudden acceleration of the cat shot.

Simple option

[cheapsub]

Rubberband

https://youtu.be/XOJ2Be1WSFw

This one better

https://youtu.be/IvjrDnHgVac

[rwtdiver]

I know it sounds crazy, I don't know if anyone has ever simulated an aircraft ejection from the I-400 deck before. I designed an aircraft ejection system for the I-400 a long time ago, the principle is very simple, is to eject the aircraft with compressed gas, put the aircraft on the launcher, the end of the launcher has a metal cylindrical hollow cover, the end of the opening. Use the servo to drive the metal rod to push the poppet valve, it will release compressed gas to eject the aircraft. The jet port on the deck is covered with an O-ring, and the jet port can be fixed by inserting it into the metal cylindrical cover when launching. The launcher, and the submarine deck are embedded with some magnets (the two are separated by a certain distance, not directly adsorbed together) to ensure the stability of the aircraft when launched, not shaking. Ideally, the aircraft will glide a certain distance when launched and eventually stop at the end of the track ~ the submarine is big enough and long enough. The poppet valve consists of a metal cover, tire valve, and trigger. The tire valve and metal cover can be glued together with strong casting glue. The schematic drawing is a bit messy, but the principle is still simple, just as some inspiration.

Sam V

Thanks for the great drawings Sam V.

My intentions with boat is to maybe get it in the water with power, if not just a somewhat detailed model! Thanks again for all the input!!

Rob
"Firemen can stand the heat"

[Sam Victory]

I know it sounds crazy, I don't know if anyone has ever simulated an aircraft ejection from the I-400 deck before. I designed an aircraft ejection system for the I-400 a long time ago, the principle is very simple, is to eject the aircraft with compressed gas, put the aircraft on the launcher, the end of the launcher has a metal cylindrical hollow cover, the end of the opening. Use the servo to drive the metal rod to push the poppet valve, it will release compressed gas to eject the aircraft. The jet port on the deck is covered with an O-ring, and the jet port can be fixed by inserting it into the metal cylindrical cover when launching. The launcher, and the submarine deck are embedded with some magnets (the two are separated by a certain distance, not directly adsorbed together) to ensure the stability of the aircraft when launched, not shaking. Ideally, the aircraft will glide a certain distance when launched and eventually stop at the end of the track ~ the submarine is big enough and long enough. The poppet valve consists of a metal cover, tire valve, and trigger. The tire valve and metal cover can be glued together with strong casting glue. The schematic drawing is a bit messy, but the principle is still simple, just as some inspiration.

Sam V

[redboat219]

Smaller cousin of the I-400s.

https://forum.rc-sub.com/forum/builder-competitions/1448-japanese-bi-i-25-in-1-72

[rwtdiver]

Sinkalot your 3D model looks good!

I finished all the Con Tower/Aircraft storage area!



This Con Tower/Aircraft Storage section has a total length of 20"! At this point I may put it together, primer, and do the detail fabrication while the rest of the submarine hull is being printed out!

Rob
"Firemen can stand the heat"