? SS Delphine ? - Yacht - 1921 - Design & 3D printing 1:100

[Iceman 29]

Indeed, Phil, wefalck.

It actually looks like the stoppers are complete in the photo, comparing to the deck plan.

It looks like this:

[Iceman 29]

A comparable system is currently used in small yachts for delicate anchorages.

[wefalck]

These are exactly the springs I mentioned above.

One thing that puzzles me in the stopper that you so nicely drew is, that the rods are subdived like for a steam-engine into a piston-rod, on which the spring sits, and a connecting rod. OK, two bearings distribute the load, but make everything more complicated. A single, strong bearing probably would have been sufficient. Or there is a function that I did not understand ...

[Iceman 29]

Pascal,

The two arms behind the stopper were probably used when the anchor was hoisted full up. At that point you wouldn't want the anchor bouncing up and down so the arms would prevent the stoppers from moving.

Phil

Actually, if you look closely, I don't think so.

This stopper would only be used when the ship is actually anchored. Once the anchor is in place, the turnbuckles are attached to the windlass which secures the whole thing as the main security, the stopper is secondary. Just in case.
The arms remain in place, I think, as a reinforcement as explained above.

This is what is done on current ships.

[DrPR]

Pascal,

I think I understand what you are saying. It does look like the stoppers slide on the forward part of the rod (inside the spring) and are not attached to the aft part rod. But like Wefalck I don't understand why there are two pieces to the rod.

By "turnbuckles" I assume you mean the typical "stopper" that attaches to the anchor chain (with a pelican hook) and is attached to a point on the deck with a turnbuckle to take up slack in the chain to pull the anchor up into the hawse pipe.

Phil

[Iceman 29]

Indeed Phil.

Drawing of the anti-roll keels. of the wooden battens of the main deck. Front drafts.

I prepared the first 237 mm long front section for printing. It's on its way, 12 hours 40 minutes of printing. Result tomorrow.

[Iceman 29]

The printing went well, I have a few minor things to fix, nothing serious.

I have a lack of material on a hull plate that I can't really explain, it comes from the digital transfer between fusion and chitubox. It can be repaired with very little filler.

I have a small problem on the starboard bulwark of the forecastle, not the port one, the supports were arranged identically, one support may have broken, they are so high. I have a problem on the water drain scuppers, a small continuity bracket was missing.

All this is easily repairable.

So I reviewed the supports in my Chitubox trenching file, as I decided not to let anything go, I started another print. But the first one is quite usable.

You can't get much higher with this Mono X 4K printer. It's very large.

The new Photon M3 Max is 5,5 cm higher with a better resolution.

Otherwise this Photon Mono X 4K is still very pleasant to use, I also like its fineness of execution even at 50 microns, its regularity of operation, a Chinese [strike]Swiss[/strike] clock, you fill the resin tray, you press print and basta!









Comparison at the same scale 1:100 between the 40 meter Hydrograaf and the 79 meter Delphine, thus double. �

[Iceman 29]

I ran section #2 on the second printer.



It's running full ahead!

See you tomorrow morning.



Section #3 is ready to turn into the real thing. It's waiting its turn.

[Iceman 29]

The final section #4 is ready, I added some details, it will be less long ( 115 mm ) to print.



I did a test assembly with the first section 1 and section 2. It's almost perfect. Nothing is glued.

You can see on the first photo of section 1, the defect on the starboard forecastle bulwark, defect erased on the second print of section 1 on which I have not yet removed the brackets.

[Iceman 29]

Printed the speedboat of his Volvo duo-prop with the Photon Ultra DLP, the camera doesn't follow, sorry.
The mesh of my jeans gives the scale, the lift cylinder rods even printed.. �:cyclops: �

The windscreen of the speedboat will be printed in transparent resin tomorrow.

The speedboat is not to be outdone, the most difficult details have been printed, steering wheel, flagpole, front lifting hook. It's amazing. I will take more pictures tomorrow.

The front axle also printed well on the Mono X, a big piece. It fits in well.





















Section No. 4, the supports are still in place. And they're going to stay there, scrap, forgot to draw the rear drafts .

It will be reprinted tonight. Can't wait for the holidays.





It's much better this way!

[wefalck]

This thing is going to be pretty big overall !

[Iceman 29]

80 cm long.

The size of my T2 tanker at 1:200.

This will help to detail it well.

[Iceman 29]

I didn't make too much progress, the weather is good, let's enjoy it!

I still managed to glue the 4 sections for a total of 80 cm long, it makes a nice Delphine.

I printed the front fittings, the foredeck, anchors, rudder, doors etc.

I still have a bit of putty (Cyano + accelerator spray) to put on, very little, and a bit of sanding, for the joins of the sections. You need to spend some time on this part of the assembly, it's important.

[JIM BAUMANN]

I have been following this stunning bit of research and analysis!

what a GREAT project!-- so very skilfully interpreted!!!

BRAVO !!

JIM B

[DrPR]

Pascal,

I was thinking about the bow and stern thrusters and a question came to mind. I have been aboard vessels with thrusters that were used for maneuvering up to a pier. That is pretty common.

On the cruiser I was on we could reverse propellers on one s1de and go ahead on the other side to "twist ship" when pulling up to and leaving the pier. This would cause the ship to spin more or less around the center of gravity. But we could also do this at speed to reduce the turn radius

I wonder if bow/stern thrusters were ever used to reduce the turn radius? In the case of the Delphine the stern thruster would increase drag when lowered, but it would also make an effective "rudder."

Have you (or anyone else) any experience with this or have you read about thrusters being used this way?

Phil

[Fliger747]

There are those who could maneuver a single screw vessel with great precision. I knew a guy who had been Captain of Tatnuk (Fleet Tug) and as OD of Iwo Jima was at the con for a practice man overboard recovery. The Captain says, won't you need to lower the boat" No sir! He brought the accommodation ladder to the proper point and the buoy could be fetched right out of the water.

Very nice! Tom

[Iceman 29]

Pascal,

I was thinking about the bow and stern thrusters and a question came to mind. I have been aboard vessels with thrusters that were used for maneuvering up to a pier. That is pretty common.

On the cruiser I was on we could reverse propellers on one s1de and go ahead on the other side to "twist ship" when pulling up to and leaving the pier. This would cause the ship to spin more or less around the center of gravity. But we could also do this at speed to reduce the turn radius

I wonder if bow/stern thrusters were ever used to reduce the turn radius? In the case of the Delphine the stern thruster would increase drag when lowered, but it would also make an effective "rudder."

Have you (or anyone else) any experience with this or have you read about thrusters being used this way?

Phil

It probably has to be done. Here the thruster comes down from its tube and should be able to turn almost 360 degrees. This type of thruster should help to turn at low speed. But its main purpose is to move the ship towards the quay, convenient when there is wind and to maintain it until the ropes are passed. It also allows not to use the propellers when we pass the hawsers towards the quay, there is always a risk to see the hawsers passed in the propeller on the quay side.

For the thrusters integrated in the hull, like here at the front, for experience, they only start to be effective below 4 knots, above that the water threads along the hull disrupt the thrust.
With two propellers you can actually put one forward and one aft, which results in a gyration.

For the maoneouvre with one propeller and without a stern thruster, the maneuver can be very delicate if you come alongside on the wrong side in relation to the direction of rotation of the propeller, pitching to the left or right.

[Iceman 29]

I have been following this stunning bit of research and analysis!

what a GREAT project!-- so very skilfully interpreted!!!

BRAVO !!

JIM B

Thanks Jim, yes, a big project.

I'm going back to work on it at the end of the month, after a 17 day holiday on the island of Corsica.

I am already well motivated to continue the creation of this beautiful ship.

[Fliger747]

Nice 1:1 scenery! the size of the project is impressive and well executed!

Regards: Tom

[Iceman 29]

Back from 17 days of dream vacation on the island of Corsica, I'm back full of energy for the second season of the SS Delphine creation.

I printed almost all the accessories of the front of the ship with the Photon Ultra printer, I must say that the printing quality is amazing with this little jewel of technology. I now print all my small parts with it, I'm addicted.

This machine is still not on sale at Anycubic, it remains a DLP prototype made in few copies (Crowfounding).

We can think that this is the future of low cost printing compared to LCD screens.

I note now with this one that I can easily make recesses like doors, the dimensions of a door for example are very close to those of the drawing, it is really good. Because with LCD screens it's really complicated.

It's of course easier to paint a door correctly when it's a piece in its own right.