Announcement

Collapse

Forum rules and expectations

Hello, and welcome to the forums at the Nautilus Drydocks, formerly Sub-driver.com!

We welcome anyone with a passion for submarines and a desire to learn and share knowledge about this fascinating hobby. Use of these forums indicates your intention to abide by our code of conduct:


1. No spam. All automated messages, advertisements, and links to competitor websites will be deleted immediately.

2. Please post in relevant sub-forums only. Messages posted in the wrong topic area will be removed and placed in the correct sub-forum by moderators.

3. Respect other users. No flaming or abusing fellow forum members. Users who continue to post inflammatory, abusive comments will be deleted from the forum after or without a warning.

4. No threats or harassment of other users will be tolerated. Any instance of threatening or harassing behavior is grounds for deletion from the forums.

5. No profanity or pornography is allowed. Posts containing adult material will be deleted.

6. No re-posting of copyrighted materials or other illegal content is allowed. Any posts containing illegal content or copyrighted materials will be deleted.
See more
See less

More Production Photos from The Cave

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • More Production Photos from The Cave

    Click image for larger version

Name:	DSCN0010.JPG
Views:	1
Size:	42.0 KB
ID:	100029Click image for larger version

Name:	DSCN0005.JPG
Views:	1
Size:	46.5 KB
ID:	100030Click image for larger version

Name:	DSCN0035.JPG
Views:	1
Size:	20.3 KB
ID:	100031Click image for larger version

Name:	DSCN0015.JPG
Views:	1
Size:	45.7 KB
ID:	100032Click image for larger version

Name:	DSCN0002.JPG
Views:	1
Size:	39.8 KB
ID:	100033Click image for larger version

Name:	DSCN0027.JPG
Views:	1
Size:	38.1 KB
ID:	100034Click image for larger version

Name:	DSCN0032.JPG
Views:	1
Size:	21.5 KB
ID:	100035Click image for larger version

Name:	DSCN0017.JPG
Views:	1
Size:	54.7 KB
ID:	100036Click image for larger version

Name:	DSCN0029.JPG
Views:	1
Size:	43.8 KB
ID:	100037Click image for larger version

Name:	DSCN0009.JPG
Views:	1
Size:	43.3 KB
ID:	100038Click image for larger version

Name:	DSCN0036.JPG
Views:	1
Size:	34.0 KB
ID:	100039
    Stop messing about - just get a Sub-driver!

  • #2
    The current 1/72 torpedo manufacturing technique (hollow, cast resin weapon) is too labor intensive. I've got to come up with a better production method. An old idea, but one that seldom came with success -- owing to the high gas leakage rate -- is to cap a length of K&S aluminum tube with a resin warhead and afterbody. Trouble with this method of construction is that the relatively high pressure of the propellant gas (typically 70 psi at room temperature), coupled with the wide thermal expansion rates between aluminum and cast polyurethane resin, stressed the aluminum-resin union to the point where most adhesive would fail and the charge of gas within the weapon would leak away.

    I conducted a series of tests involving a very tight interference fit between torpedo parts, use of RTV adhesive, and a radial crimp to not only effect a strong union between these parts, but to also assure a gas tight union, even during the chilling operation employed to get the maximum amount of propellant into the weapon during the charging operation.

    Here I've made a series of afterbody and warhead blanks to test -- in mass -- the gas tight integrity of these new type gas propelled, 1/72 weapons. I'm also going to study the effectiveness of different stabilizer off-sets to find which one delivers the most stability to the weapon during its run through the water.

    Click image for larger version

Name:	DSCF7365.jpg
Views:	1
Size:	88.6 KB
ID:	84562Click image for larger version

Name:	DSCF7369.jpg
Views:	1
Size:	84.6 KB
ID:	84563Click image for larger version

Name:	DSCF7375.jpg
Views:	1
Size:	85.0 KB
ID:	84564Click image for larger version

Name:	DSCF7382.jpg
Views:	1
Size:	87.8 KB
ID:	84565Click image for larger version

Name:	DSCF7385.jpg
Views:	1
Size:	82.7 KB
ID:	84566Click image for larger version

Name:	DSCF7396.jpg
Views:	1
Size:	96.7 KB
ID:	84567Click image for larger version

Name:	DSCF7398.jpg
Views:	1
Size:	92.1 KB
ID:	84568Click image for larger version

Name:	DSCF7402.jpg
Views:	1
Size:	89.1 KB
ID:	84569Click image for larger version

Name:	DSCF7404.jpg
Views:	1
Size:	88.8 KB
ID:	84570Click image for larger version

Name:	DSCF7408.jpg
Views:	1
Size:	91.1 KB
ID:	84571Click image for larger version

Name:	DSCF7410.jpg
Views:	1
Size:	88.0 KB
ID:	84572
    "... well, that takes care of Jorgenson's theory!"

    Comment


    • #3
      Another crazy idea!
      See attached sketch. Reduction in production machining.
      1) Cast the gas chamber with materials that stays with the torpedo. Make a chamber and exhaust nozzle assembly from a straw
      with end caps of plastic. The nozzle tube is glued into this and placed in the mold.
      2) Pour the resin in one shot mold around the chamber tube assemble. No glueing in plugs and turning to shape.
      3) For the gas nozzle fill the tube partially with RTV silicone (if compatible with propllent) then drill the nozzle area with a drill bit.
      4) cut a hypodermic neele to length and insert through RTV making a precision size orifice.

      Scott T
      Click image for larger version

Name:	torpedo molding.jpg
Views:	1
Size:	89.9 KB
ID:	84609

      Comment


      • #4
        Originally posted by Scott T View Post
        Another crazy idea!
        See attached sketch. Reduction in production machining.
        1) Cast the gas chamber with materials that stays with the torpedo. Make a chamber and exhaust nozzle assembly from a straw
        with end caps of plastic. The nozzle tube is glued into this and placed in the mold.
        2) Pour the resin in one shot mold around the chamber tube assemble. No glueing in plugs and turning to shape.
        3) For the gas nozzle fill the tube partially with RTV silicone (if compatible with propllent) then drill the nozzle area with a drill bit.
        4) cut a hypodermic neele to length and insert through RTV making a precision size orifice.

        Scott T
        [ATTACH=CONFIG]24250[/ATTACH]
        Not crazy. It's another way to skin the cat. And food for thought, Scott.

        Trouble is machining the resin body to diameter and getting rid of the flange lines -- requires spinning on the lathe followed by putty and primer work. This is pretty much how I manufacture the weapons up to this point. See pictures below:

        Click image for larger version

Name:	DSCN0179.jpg
Views:	2
Size:	88.1 KB
ID:	84610Click image for larger version

Name:	DSCN0050.jpg
Views:	1
Size:	94.2 KB
ID:	84611Click image for larger version

Name:	DSCN0052.jpg
Views:	1
Size:	93.0 KB
ID:	84612Click image for larger version

Name:	DSCN0054.jpg
Views:	1
Size:	97.7 KB
ID:	84613Click image for larger version

Name:	DSCN0056.jpg
Views:	1
Size:	82.8 KB
ID:	84614Click image for larger version

Name:	DSCN0063.jpg
Views:	1
Size:	94.6 KB
ID:	84615Click image for larger version

Name:	DSCN0064.jpg
Views:	1
Size:	93.2 KB
ID:	84616Click image for larger version

Name:	DSCN0030.jpg
Views:	1
Size:	91.5 KB
ID:	84617Click image for larger version

Name:	DSCN0035.jpg
Views:	1
Size:	86.4 KB
ID:	84618Click image for larger version

Name:	DSCN0061.jpg
Views:	1
Size:	96.0 KB
ID:	84619Click image for larger version

Name:	DSCN0065.jpg
Views:	1
Size:	93.5 KB
ID:	84620Click image for larger version

Name:	DSCN0037.jpg
Views:	1
Size:	92.8 KB
ID:	84621Click image for larger version

Name:	DSCN0047.jpg
Views:	1
Size:	85.3 KB
ID:	84622

        Way, way too labor intensive. Best just to make the main-body the aluminum tube and be done with the spinning operations.

        M
        "... well, that takes care of Jorgenson's theory!"

        Comment


        • #5
          OK. Warhead and afterbody masters done -- check; rubber tools done -- check; cast up and assemble four different type (vary by stabilizing fin off-set) weapons -- check; leak check new weapons -- check.

          Fine. Tomorrow Ellie and I go to the Lynnhaven Dive Center pool to find which type weapons runs the best in the pool.

          Film at Eleven!

          Click image for larger version

Name:	DSCF7415.jpg
Views:	1
Size:	90.2 KB
ID:	84623Click image for larger version

Name:	DSCF7417.jpg
Views:	1
Size:	92.0 KB
ID:	84624Click image for larger version

Name:	DSCF7420.jpg
Views:	1
Size:	88.0 KB
ID:	84625Click image for larger version

Name:	DSCF7430.jpg
Views:	1
Size:	88.9 KB
ID:	84626Click image for larger version

Name:	DSCF7439.jpg
Views:	1
Size:	92.1 KB
ID:	84627Click image for larger version

Name:	DSCF7445.jpg
Views:	1
Size:	95.6 KB
ID:	84628Click image for larger version

Name:	DSCF7446.jpg
Views:	1
Size:	88.0 KB
ID:	84629Click image for larger version

Name:	DSCF7449.jpg
Views:	2
Size:	91.2 KB
ID:	84630Click image for larger version

Name:	DSCF7451.jpg
Views:	1
Size:	90.8 KB
ID:	84631
          "... well, that takes care of Jorgenson's theory!"

          Comment


          • #6
            Hate to throw a spanner in the works, but how hard would it be David to manufacture a longer version of the current 1/72 scale torpedo?

            In my experience, I'd love to have a longer running torpedo. That would need simply more fuel. Sure it won't be scale, but those who use this will tell you these torpedoes don't typically get mounted on the display stand for rivet counters to question. Mine have two states, stored in a box, or in use. When in use - their hard buggers to see too. A longer version would need a longer launch tube, but would not need a re-tooled (larger diameter) launch mechanism.

            J
            Last edited by Slats; 11-25-2013, 06:52 PM.
            John Slater

            Sydney Australia

            You would not steal a wallet so don't steal people's livelihood.
            Think of that before your buy "cheap" pirated goods or download others work protected by copyright. Theft is theft.



            sigpic

            Comment


            • #7
              State of the Art Nifty Sir!
              IT TAKES GREAT INTELLIGENCE TO FAKE SUCH STUPIDITY!

              Comment


              • #8
                Good news, John:

                Just got back from the diver's training pool where Ellie and I did some testing of the 'new' 1/72 weapon. The increased volume within the weapon over the old resin design has resulted in a marked increase in range -- about sixty-feet now. However, I found that I need to tighten up the nozzle throat diameter from its current .014" to .009" as the weapon is too fast and will fly into the air on occasion. Going back to the pool tomorrow with new nozzles and we'll see what kind of range that gives us.

                Increasing the weapon length, means a launcher of comparable length.

                M
                "... well, that takes care of Jorgenson's theory!"

                Comment


                • #9
                  Originally posted by He Who Shall Not Be Named View Post
                  Good news, John:

                  Just got back from the diver's training pool where Ellie and I did some testing of the 'new' 1/72 weapon. The increased volume within the weapon over the old resin design has resulted in a marked increase in range -- about sixty-feet now. However, I found that I need to tighten up the nozzle throat diameter from its current .014" to .009" as the weapon is too fast and will fly into the air on occasion. Going back to the pool tomorrow with new nozzles and we'll see what kind of range that gives us.

                  Increasing the weapon length, means a launcher of comparable length.

                  M
                  And let that be a lesson to you Mr. Slater

                  You wonder why your order isn't ready? It's because folks like you dangle carrots like this in front of HWSNBN and off he goes, regardless of order priority, so don't come whining to me because your stuff isn't in the mail!
                  Stop messing about - just get a Sub-driver!

                  Comment


                  • #10
                    Damit, Boss! .... stop chasing the customers away!

                    M
                    "... well, that takes care of Jorgenson's theory!"

                    Comment


                    • #11
                      Originally posted by Kazzer View Post
                      And let that be a lesson to you Mr. Slater

                      You wonder why your order isn't ready? It's because folks like you dangle carrots like this in front of HWSNBN and off he goes, regardless of order priority, so don't come whining to me because your stuff isn't in the mail!
                      As eloquent and as straight to point as ever Mike. But that is part of the reason why the long term nuts (like me) are in the hobby -Innovation. Indeed this forum success is based on that.

                      David - he does has a point. Its been a long wait. Can you please finalise the order ASAP.

                      Thanks guys.

                      John
                      John Slater

                      Sydney Australia

                      You would not steal a wallet so don't steal people's livelihood.
                      Think of that before your buy "cheap" pirated goods or download others work protected by copyright. Theft is theft.



                      sigpic

                      Comment


                      • #12
                        Originally posted by Slats View Post

                        David - he does has a point. Its been a long wait. Can you please finalise the order ASAP.

                        Thanks guys.

                        John
                        Yes I do! Do what he says Mr. M Digitum Extractum!
                        Stop messing about - just get a Sub-driver!

                        Comment


                        • #13
                          OK, Boss.

                          M
                          "... well, that takes care of Jorgenson's theory!"

                          Comment


                          • #14
                            Click image for larger version

Name:	DSCF7472.jpg
Views:	1
Size:	86.8 KB
ID:	84694Click image for larger version

Name:	DSCF7474.jpg
Views:	1
Size:	92.3 KB
ID:	84695Click image for larger version

Name:	DSCF7492.jpg
Views:	1
Size:	89.8 KB
ID:	84696Click image for larger version

Name:	DSCF7499.jpg
Views:	1
Size:	92.5 KB
ID:	84697Click image for larger version

Name:	DSCF7539.jpg
Views:	1
Size:	89.7 KB
ID:	84698
                            "... well, that takes care of Jorgenson's theory!"

                            Comment


                            • #15
                              Originally posted by He Who Shall Not Be Named View Post
                              [ATTACH=CONFIG]24345[/ATTACH][ATTACH=CONFIG]24346[/ATTACH][ATTACH=CONFIG]24347[/ATTACH][ATTACH=CONFIG]24348[/ATTACH][ATTACH=CONFIG]24349[/ATTACH]
                              I guess you've finished Slats order then?
                              Stop messing about - just get a Sub-driver!

                              Comment

                              Working...
                              X