Welcome to our forums. For the best in R/C submarine kits, components and accessories, be sure to visit the Nautilus Drydocks

**Albacore 569** · 11-23-2025, 10:14 AM

Originally posted by Akula54

I can't wait for the files to be available, this model is awesome !
(And I have an OTW WTC wich fit perfectly... )

I am using a OTW Dive module 3.5 inch also. Yes to JHapprich - Must be French Steam punk!

**Albacore 569** · 11-23-2025, 10:38 AM

Printed a pair overnight, using my 'easy bake oven' produced these this morning - print time 8 hours 13 minutes. These printers never cease to amaze me. Looks like they need sanding? Nope! They will get their final UV sun bath as soon as the sun comes up.

All these propulsor evolutions have a hole for a hex locking nut. I will make a tiny discrete hole in the shroud along its bottom out of view for slim hex wrench. Will drill hole once propulsor final positioning finalized.

**Albacore 569** · 12-04-2025, 02:40 PM

The French DDS for Suffern Class SSN (SNA) design progressing. Almost done.

**Albacore 569** · 12-08-2025, 11:19 AM

While DDS design finishes, completing the Suffern's swiveling pump jet. In the middle side view of propulsor with its stainless steel 4 mm shaft, this is more a reference photo for me so I can remember if I ever do maintenance I can reinstall the correct number of bearings and washer spacers. The large disk (washer) buts up against the stern and acts as a discrete pivoting thrust block. Simple, works great. Added a hole along bottom centerline to insert an Allen wrench to easily tighten prop to shaft.

To remove or attach, use allen wrench to pull the threaded allen pins from the rudder posts, detach the flexible coupling from the drive shaft, slide the shroud and prop off stern. Insert allen wrench loosen prop on shaft...gently slide the shaft partially out leaving a 1/4 inch extending like in photo, pull out shaft that extends into the tail cone. Tip the prop to remove around the lower rudder post. Reverse steps tio replace.

How the real pump jet actually really looks is unknown and don't care to know thank you very much. lol. I decided on 12 turning blades It probably has a primary number blade count likely on the real ones. Made blade tip clearances minimal. We are using a post swirl design instead of a pre Swirl design which the fixed stators are in front of the propulsor - like all known existing PJs around the world. (the Mk 48 Torpedo uses a post swirl). However, the pre swirl is excellent for facilitating the swivel function I desired and is simple and sturdy. In the water, It will still looks scale nuff.. Now the shroud doesn't restrain model turning but the reverse greatly enhancing it. Bob Martin has since made his own design with a swiveling PJ accessory for his 1/72 scale Virginia kits