* THE FORUM FOR ALL THOSE INTERESTED IN BUILDING AND OPERATING MODEL SUBMARINES *



Join the AMS - Registered Forum users can become members of the AMS and it's free ...... To join register on the forum first then follow the forum link to our membership form which is on our website


For further details of any events shown here also see the "Shows and Events" section on the forum

Let us know of your plans for 2017 and we will promote them on this Forum

.

.

,.

. .

.

.

Bournville MBC, West Midlands, 17th Sept

Edinburgh MBC Warship & Sub Day, 24th Sept

Who is online?

In total there are 6 users online :: 0 Registered, 0 Hidden and 6 Guests

None


Most users ever online was 37 on Sun Mar 13, 2011 11:27 am

Latest topics

» Bournville Sep 2017
Mon Sep 18, 2017 10:28 pm by timgarrod

» Model Sub Related Events for 2017
Fri Sep 08, 2017 9:00 am by david f

» Haydock Park 2017
Wed Sep 06, 2017 12:08 pm by david f

» Going Brushless?
Tue Sep 05, 2017 3:55 pm by david f

» Barrow in Furness MBC regatta and sub day
Mon Sep 04, 2017 3:46 pm by david f

» Model Boat Convention, Haydock Park, 26,27 August
Mon Aug 14, 2017 9:27 am by david f

» Frequency checker
Wed Aug 09, 2017 9:17 pm by hooper

» IJN Type KD3 fleet submarine or similar
Sat Aug 05, 2017 8:13 pm by offroad

» Norwich Model Sub Weekend 2017 - Norwich MBC
Sat Aug 05, 2017 9:33 am by david f

Statistics

Our users have posted a total of 10329 messages in 1673 subjects

We have 734 registered users

The newest registered user is LenaMax24


    Germany's first military submarine, the S.M. U-1

    Share

    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 20, 2013 1:56 pm

    I'm currently building Germanie's first military submarine, the S.M. U-1 from 1906.



    The model is based on the only existing overall plan.



    I didgitized it, scaled it, and based on the drwaings I created a 3D CAD model, which is the basis for my model:




    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 20, 2013 2:16 pm

    Based on the CAD drawing I got begative moulds milled out of hard foam. These negatives I used to build a positive out of glas fiber composites.













    After the cutring of the resin, I basically cut and grinded the foam of the positive. Here the lower hull:






    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 20, 2013 2:21 pm

    Same procedure for the upper hull:







    And the result - the still relatively crude positive model:





    The mould for the conning-tower I did before based on a positive model I got fabricated via rapid prototyping.


    Tom(ADMIN)
    AMS Forum Owner

    Posts : 2989
    Join date : 2010-11-05
    Age : 57
    Location : Nevada, USA

    Re: Germany's first military submarine, the S.M. U-1

    Post  Tom(ADMIN) on Wed Mar 20, 2013 2:28 pm

    Very nice indeed, sir...

    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 20, 2013 2:40 pm

    Thanks!

    After I got the raw positive, lots of grinding, sanding, filling, and finally painting and polishing got me here:









    Then came the nasty part - building the moulds:








    70 kgs of them actually...

    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 20, 2013 2:43 pm

    Three months of work, but they turned out really good:



    avatar
    tattooed
    AMS member

    Posts : 340
    Join date : 2011-05-16
    Age : 53
    Location : Bristol

    Re: Germany's first military submarine, the S.M. U-1

    Post  tattooed on Wed Mar 20, 2013 7:01 pm

    what a fantastic skill you have keep up the great work
    avatar
    profesorul
    Guest

    Posts : 384
    Join date : 2011-07-03
    Age : 52
    Location : Bucuresti, ROMANIA

    Re: Germany's first military submarine, the S.M. U-1

    Post  profesorul on Wed Mar 20, 2013 7:20 pm

    That's "REALLY OW SOME" like he Americans sad.

    Is Really Great what You have don.So Much effort but is worth it.
    Please keep as on post with your work.

    MARIUS

    P.S. How many Kilograms of Silicone Rubber did You used?!...60-75KG!!!.

    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 20, 2013 8:23 pm

    The moulds for the hull weigh about 70 kg. They are made out of resin and glass fiber.
    avatar
    profesorul
    Guest

    Posts : 384
    Join date : 2011-07-03
    Age : 52
    Location : Bucuresti, ROMANIA

    Re: Germany's first military submarine, the S.M. U-1

    Post  profesorul on Wed Mar 20, 2013 8:27 pm

    SEE I have a GOOD eye!.

    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 20, 2013 8:32 pm

    After the moulds were done, I made the first glass fiber parts for the actual boat. The conning tower:




    The upper hull with conning-tower:





    and the raw assembly:


    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 20, 2013 8:39 pm

    At that stage I also had the interior design ready:



    It's loosely based on the Engel VIIc interior design and works with 2 x 750 ml piston tanks, brushless motors and LiFePo batteries.
    The technical components are mounted into a frame made out of 5 mm milled thick glass fiber plates and M5 thread rods:





    The whole assembly will be housed in glass fiber tubes sealed with bayonet coupling:



    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 20, 2013 8:45 pm

    I've also started to work on the details. Many of the small parts are 3D-pinted and are used to then I cast silicone moulds.





    With those parts I started the detail work - e.g. the front hatch with a small periscope:



    The assembly for the back snorkel:




    And the details on the conning tower:

    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 20, 2013 8:47 pm

    Currently I'm working on the moulds for the rudders. They are based on models made of soldered brass:



    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 20, 2013 9:00 pm

    That's where I'm at today:

    avatar
    david f
    AMS Treasurer

    Posts : 1888
    Join date : 2010-11-10
    Age : 67
    Location : Cumbria

    Re: Germany's first military submarine, the S.M. U-1

    Post  david f on Thu Mar 21, 2013 9:42 am

    That is lovely work.

    How did you get the original hard foam milling done? Did it cost much?

    Congratulations on the build.

    David

    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Thu Mar 21, 2013 10:03 am

    A friend of mine has a company that produces carbon and glass fiber products, and he has a 3D mill. I got the milling as a return for a favor. But I think it would have been comparatively cheap, as the hard foam allows high feed rates and thus costs little machine time, the foam is cheap and you have no wear on the milling tools. I had the CAD data ready for a CAM programm, so programming was also not a big issue. Milling in resin e.g. would have been very, very costly. I know, because that was the firts idea, but quotes I got were all in the 3500 Euro range. Not attractive at all.....
    avatar
    david f
    AMS Treasurer

    Posts : 1888
    Join date : 2010-11-10
    Age : 67
    Location : Cumbria

    Re: Germany's first military submarine, the S.M. U-1

    Post  david f on Fri Mar 22, 2013 1:39 pm

    It is very interesting to see how this technology works out. A pity it is still expensive.

    Would the Euro 3500 option have avoided the need for the first positive mould perhaps?

    David

    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Fri Mar 22, 2013 2:29 pm

    Most probably yes. You can directly mill negtive moulds in resin blocks, but they are not as durable as conventional moulds that have a very hard surface due to special mould resisns.
    avatar
    acrowot (Geof)
    Guest

    Posts : 158
    Join date : 2011-01-21
    Age : 46
    Location : chessington surrey

    Re: Germany's first military submarine, the S.M. U-1

    Post  acrowot (Geof) on Wed Mar 27, 2013 8:13 am

    the moulds look great you must have a lot of patient,s
    i will admit i dont know much about moulding things i will need to have a lesson on how to do hydroplanes and rudders if i build the deans marines HMS Resolution
    im watching with great interest

    take care geof

    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed Mar 27, 2013 11:51 am

    I do n ot have too much time to do the build, so patiece comes easy.....

    It's the first sub I build on my own, so I'm also learning allot.

    Cheers Andreas

    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Tue Apr 09, 2013 8:59 pm

    Took three tries to get the ruder and the hydroplanes right. New moulds are often a bit tricky. But now I'm quite pleased with the results. Brass shafts and glass fiber / carbon fiber blades. Rock solid.....





    avatar
    david f
    AMS Treasurer

    Posts : 1888
    Join date : 2010-11-10
    Age : 67
    Location : Cumbria

    Re: Germany's first military submarine, the S.M. U-1

    Post  david f on Wed Apr 10, 2013 8:35 am

    Lovely stuff!
    Thank you.

    David
    avatar
    acrowot (Geof)
    Guest

    Posts : 158
    Join date : 2011-01-21
    Age : 46
    Location : chessington surrey

    Re: Germany's first military submarine, the S.M. U-1

    Post  acrowot (Geof) on Wed Apr 10, 2013 6:41 pm

    I wish i could biuld that well looks great keep up the good work
    Geof

    Dr.Schmidt
    Guest

    Posts : 170
    Join date : 2013-03-20
    Location : Germany, Bavarya

    Re: Germany's first military submarine, the S.M. U-1

    Post  Dr.Schmidt on Wed May 08, 2013 9:51 am

    O.K., slow progress, but progress.....

    The front servo will be located in a smaller tube attached to front of the main pressure tube. To be able to install and remove it, I have located it on a mount, that can be pushed over two thread rods and that will be secured by two M5 nuts.







    The brushless motors have watertight feedthroughs that just get mounted in the motor flange and that are secured by a M18 nut. The feedthroughs are custom made.







    And the pre-assembly of the tower is finished, too.




    Sponsored content

    Re: Germany's first military submarine, the S.M. U-1

    Post  Sponsored content


      Current date/time is Sat Sep 23, 2017 8:56 pm