Building the french suffren sna

[neitosub]

Which 3D software are you using to create the control surfaces? Usually resin prints should be pretty dimensionally accurate.

Nate

[Albacore 569]

Slowly by trial and error learning to 3 d print the Suffren parts. Tech support really sucks, and you tube videos are worse. 'Oh, it's so easy!' **** them. The issue now is exposure times. The manufacturers seem all way off. Seems 3 d printing is as much an art as it is a science. I was hoping more on science. Local Freind and sub builder Jeff Apts is being of great assistance. we are dialing it in.

On test rudder 3 , managed t print 2 of 4 rudders sliced. At least after 3 months got some indication the printer and slicer program actually works. Before this total darkness. It's a start.

[Albacore 569]

Pleased to meet you. I hope it's ok to use. It is valuable for my model building. I'm happy to give you credit if I knew you. but I didn't.
it was from this YouTube video . at about15:57 minutes in (about). public source

The commentator (a sub vet) seemed to be very impressed with the Suffern's too, Esp. the (sonar suite).

Dp you have anything like plans drawings of the USS Halibut SSGN 587?

It is suspected now that the Suffren class & Virginia class and sure likely others now have a form of anti-aircraft ASW helicopter anti drone weapon capability using a laser weapon fired from one of the masts.

[EmbersOfSuns]

Much has been happening quietly. I have decided to purchase a large table resin 3 d printer. Well large enough for any project I can imagine and still fit in my car trunk The tariffs and to save cost made sense to just print my own from STL files myself, avoiding middleman and Canada and Chinese Tariffs. The design work in Canada, but trump can tariff me if the files are acquired over the border over the internet.

Retired, I sold out some points frm years designing in a virtual world and was able to cash out $800.00 that paid for the printer. Grateful to my middleman in previous projects, but it's time to leave the nest.

This way made sense, and I kept thinking oh just one more project...lol then it would cost less, and I can build future projects and maybe print for others too - recouping my investment also to some extent. The STL files for Suffern have been done a few weeks and will start attempting to use the printer and press forward.

The STL files by Randy Sanders are breath taking and accurate as far as we can tell by both of us working together from public sources.

The French have developed an excellent somewhat smaller than a Virginia and Astute attack boat, with sonar that maybe the best in the world. (according to one American independent source). The pump jet is designed for this model works well in its 'functionality requested'.

New research is always done, and here is a new illustration from You tube video that confirms my earlier research and sharing here. More to come of course. Glad its accurate as my masts have been already completed! LOL.

The illustration also confirms the aluminum masts on my model with the airfoil shape reversed is correct. Those French!

Hey! That's one of my illustrations lol. Just curious, what youtube video did you find it in?

[Albacore 569]

Why have you got a pair of cardan joints either side of a telescoping CV shaft?

These will probably be eliminated as unnecessary. I decided I didn't need after I drew up the illustration a while ago. I was wondering if anyone cared or noticed...you win a cookie! lol.

The turning ability should be dramatically improved.

How ever I think a lot maybe about factoring in the boats center of gravity/buoyancy too.

I was prompted when at the ideal for running San Fransico Sub Regatta where a friend brought his beautiful Astute class HMS Artful in 1/72 scale. He complained it turned like a pig, even after making and adding a transparent slipper addition to the rudder below on the cruciform stern.

At the same time interestingly Bb Martin has a video of his Trafalgar class with a pump et in 1/64 too (same cale as my future Suffern).. That model Bob demonstrated had excellent turning in the pond surfaced and submerged. The models are of similar size / shapes in their hulls and surface area for their rudder's stern planes too.

The vectoring pump jet was an idea I wanted to test out. But Bob's Trafalgar suggests a lot about turning ability maybe more about the center o gravity, the rudder area, combined importantly the length of the rudder's moment arm from the boats center of gravity / buoyancy, despite the big 'lamp shade' on the back.

[rwtdiver]

Rough printing (not final product) of feasibility test and functional check for new swivel Suffern Pump jet. Internal control rod for actuating as a rudder. For this to Swivel it was accepted it had to become a Post swirl arrangement for this to function. 8 post swirl stators and 15 impellor blades. I had number of impellor blades reduced from 18 originally to 15 (odd number). (too much 'prop area').

The Propulsor and the shroud move as one unit. Only swivels left or right + or - 25 degrees (ample) . To facilitate the prop shaft needing mechanically able to extend and shorten as the PJ swivels I will employ a HR CVD110T25 Lightweight CV splined drive shaft barrowed from RC off road car parts Off the shelf and already water proof. the drive shaft lengthening or shortening from 110 -125 mm.

This should transform the 'lamp shade' from a lability to an asset. Do the real ones do this? IDK. I just know it is hoped mine will.

Steve,

Your pump jet concept is very interesting for sure!

Looking forward to how it actually works...

Rob
"Firemen can stand the heat."

[Subculture]

Why have you got a pair of cardan joints either side of a telescoping CV shaft?

[Albacore 569]

DeGrasse pulled out of the building shed May 27, 2025.

Face Book video intel.

[Albacore 569]

Rough printing (not final product) of feasibility test and functional check for new swivel Suffern Pump jet. Internal control rod for actuating as a rudder. For this to Swivel it was accepted it had to become a Post swirl arrangement for this to function. 8 post swirl stators and 15 impellor blades. I had number of impellor blades reduced from 18 originally to 15 (odd number). (too much 'prop area').

The Propulsor and the shroud move as one unit. Only swivels left or right + or - 25 degrees (ample) . To facilitate the prop shaft needing mechanically able to extend and shorten as the PJ swivels I will employ a HR CVD110T25 Lightweight CV splined drive shaft barrowed from RC off road car parts Off the shelf and already water proof. the drive shaft lengthening or shortening from 110 -125 mm.

This should transform the 'lamp shade' from a lability to an asset. Do the real ones do this? IDK. I just know it is hoped mine will.

[Albacore 569]

Much has been happening quietly. I have decided to purchase a large table resin 3 d printer. Well large enough for any project I can imagine and still fit in my car trunk The tariffs and to save cost made sense to just print my own from STL files myself, avoiding middleman and Canada and Chinese Tariffs. The design work in Canada, but trump can tariff me if the files are acquired over the border over the internet.

Retired, I sold out some points frm years designing in a virtual world and was able to cash out $800.00 that paid for the printer. Grateful to my middleman in previous projects, but it's time to leave the nest.

This way made sense, and I kept thinking oh just one more project...lol then it would cost less, and I can build future projects and maybe print for others too - recouping my investment also to some extent. The STL files for Suffern have been done a few weeks and will start attempting to use the printer and press forward.

The STL files by Randy Sanders are breath taking and accurate as far as we can tell by both of us working together from public sources.

The French have developed an excellent somewhat smaller than a Virginia and Astute attack boat, with sonar that maybe the best in the world. (according to one American independent source). The pump jet is designed for this model works well in its 'functionality requested'.

New research is always done, and here is a new illustration from You tube video that confirms my earlier research and sharing here. More to come of course. Glad its accurate as my masts have been already completed! LOL.

The illustration also confirms the aluminum masts on my model with the airfoil shape reversed is correct. Those French!

[Akula54]

Design work by Randy is proceeding. It is looking amazing! See Randy Sanders designs in Bob Martins list of STL files for sale.

I'm in love with this design !

[Albacore 569]

Design work by Randy is proceeding. It is looking amazing! See Randy Sanders designs in Bob Martins list of STL files for sale.

[Albacore 569]

Some early sketches of design work for Suffern by Randy Sanders

[Albacore 569]

At the suggestion of my sister, I decided to try ChatGMP, an artificial intelligence tool to look for more research images of the Suffern class. I was a bit underwhelmed the first several times using it. It gave me more or less the same stuff I already had. I suspect I will need to perfect my search words more. But it steered me t some interesting videos that I could freeze frame. I can see how kids in school today are such idiots. It will write up for you a school report on the Suffern class essentially writing it for you in 2 seconds. Composed and consise....lol.

I tried to look up stuff too on the Walter HMS Meteorite peroxide propulsion, and it referred me to my own writings here!!!! LOL. I guess I should be flattered but was hoping to find more.

But I did find some good clues of Suffern's towed array housing on her port side only

[vital.spark]

Boy, I wish I had one! Fanny and I really miss Ellie! She was so so special and will always be in our hearts.