Russian Alfa Class

[rwtdiver]

I have the bottom sections of the Alfa hull completed!





I also purchased two 24" cylinders (one 3.00" and one 3.50") Not totally sure which one I will use just yet. I have the 3.50" cylinder in the two photos above. Until I get the top hull sections complete, the cylinder selection is up in the air at this point.

Rob
"Firemen can stand the heat"

[neitosub]

That is a great advantage of 3D printing programs, you can rescale a boat very easily!

Nate

[rwtdiver]

Always loved the Alfa class, 1/72 is a bit too big for my liking but 1/96 scale is perfect.

NEITOSUB,

My Alfa build is not a true 1:72. I purchased the files from Nautilus Drydocks (1:96 scale) and modified the size of the files to get as much additional length to my build as possible using my DREMEL 40 3D printer. 170mm is my max height on this machine. I took Bob Martins files and I am building at 125% which is a little smaller than 1:72 scale, not sure what the scale is! I am scratch building my WTC system for my boat, and will need the extra length.

Rob
Firemen can stand the heat"

[neitosub]

Always loved the Alfa class, 1/72 is a bit too big for my liking but 1/96 scale is perfect.

[rwtdiver]

Looking good Rob. Following along.

Thanks Steve,

I am really looking forward to building this Alfa out to the fullest extent that I can. A WTC with a proper working ballast system, functioning diving plains, rudder, and propulsion system. And when that has been achieved, a properly finished out David M. hull!

Rob
"Firemen can stand the heat"

[SubDude]

Looking good Rob. Following along.

[rwtdiver]

I am making some headway on the Alfa hull build. I am using white Dremel PLA, and 100% infill.



Rob
"Firemen can stand the heat"

[rwtdiver]

Ramel! Thank you for the information! I have a much SIMPLER method for bringing my sunken Submarines to the surface!!





Nothing complicated here! Sure fire, and works every time!!

Rob
"Firemen can stand the heat"

[redboat219]

[He Who Shall Not Be Named]

Your gear pump will leake-by just a bit, but nothing the occasional, 'empty' command won't fix.

David

[rwtdiver]

Your initial sketch had it right: a reversable pump plumbed directly to the bottom of the ballast tank, and a vent up high in the sail. That's it. Finishe, move on, job done, Miller Time.

Thank you David,

I do have a couple of drawings to sort of confirm what you have said! (Thank you)





OK! Thank you David! I do appreciate ALL your help and expertise with my latest project.

Rob
"Firemen can stand the heat"

[He Who Shall Not Be Named]

Your initial sketch had it right: a reversable pump plumbed directly to the bottom of the ballast tank, and a vent up high in the sail. That's it. Finishe, move on, job done, Miller Time.

[rwtdiver]

Yup.

David

Thanks David!

I am going to do another updated drawing as to how all the components will come together. I would appreciate your comments on it and if you think my design might work.

Rob
"Firemen can stand the heat"

[He Who Shall Not Be Named]

Thank you for getting back to me David. I really appreciate all your expertise and input!!





Would this pump be considered a geared pump? It came out of a Krick U-Boat kit.

Thanks again for your time David!

Rob
"Firemen can stand the heat"

Yup.

David

[rwtdiver]

If what you have there is a gear type pump (which is reversable), and the switches are for polarity swapping, then that's all you need (and the fixed vent, of course).

David

Thank you for getting back to me David. I really appreciate all your expertise and input!!





Would this pump be considered a geared pump? It came out of a Krick U-Boat kit.

Thanks again for your time David!

Rob
"Firemen can stand the heat"