The Turtle 1776

[RonP-UK]

One of the prolems of being an old fart is that sometimes you rely on a memory that is 30years old or more, I know that James was not on the throne in 1578 but it never crossed my mind until you brought it up so I dusted off my acient books and re-looked the whole thing up again and here is the confusing answer.
You are correct in that you say that Bourne's boat was never built but the idea was there and was perhaps sound. In "Submarines, the history and evolution of underwater fighting vessels" (Anthony Preston 1975) and "Undersea Warfare"(Richard Humble 1981) Bournes boat was 1578 and Van Drebbel some 40 years later and HE was supposed to have taken James 1 (1556 -1625) on a trip from Wesminster to Greenwich (about 15 miles) at a depth of 12-15 Feet) as it was man powered it seems unlikely.
A dutchman named DeSonne built a submersable in 1653 to have a go at the Brits (everyone wants to have a go at the Brits) and an Italian (Borelli) also built a sub in 1747 although I have little information on that one. I cant find my refference books on Simon Day but I think that was around 1650 ish. Whatever-- your claim that Bushnell was the inventor of the submarine is a bit off the mark, however it was the first sub to attack a warship (Brits again--see what I mean)and given a decent Black and Decker
he might even have succeeded. You have to admire these guys, it took over 300 years for a submarine to look practical yet they kept on trying. Just as a byline I would suggest that in fact the worlds first practical and what I would call a submarine
was probably H.L.Hunley.
Keep up the good work and I will look forward to seeing your Turtle as and when its finished.
Regards
RonP

[DELTA1DSV]

Hi Ron P and thanks for the history lesson, (you must be a retired historian). Its nice to get the facts sorted out, when the Turtle is finished I shall put an extra flag on her to remember you!!!

[DELTA1DSV]

Hi, well I am now back working on the Turtle, changed the drive prop motor to a 3 to 1 reduction gear box running off a 380 motor at 12 volts, the internal is now a complete "free flood room) to save my poor old back, !!! with the top 1/4 polly styrene (for pop up boyency) I've decided to use a pump ,in order to pump water into a bag inside the WTC , to pressurise the chamber to control the positive to negitive boyency, to control the dive., adding a little lead ballast to the bottom of the float , as a keel weight. ,IDEA !!! using a wheelley bin as my test tank,!!!!
(oh yer, the pumps reverse too).!!!
The rudder is attached working off my water tight servo, which is a direct mount on the outside of the hull. the verticle motor is still a 600 motor, but I have made an other gear box running off a 350 motor which I may change over , (under tests in the tank) to see how it performs, using to resurface,!!!

[DELTA1DSV]

Well as promised , this is the idea on how the WTC will work in the Turtle, Left and right independent pumps to dive and resurface centre WTC for electronics
hope you like this ,!!!!
Attachment 4555

[redboat219]

Your link doesn't seem to be working, I don't see any pictures.

[DELTA1DSV]

Hi, Sorry the pic of the WTC will not work, !!!! but I will have a operational WTC on Video in a couple of weeks, so here's a video of the Vertical prop , it a quick wham-bang together sort of thing, but I am building a deluxe model on the back of this one., as the design changes, its real fun to do, love playing around with it, and you tend to learn so much more, !!! than one out of a box, !!! The WTC is in 3 parts, Left vertical WTC PUMP Right vertical WTC Pump (one pump water in the other pumps water out, Centre Wct for electronics and batteries.