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    LOS ANGELES build logs

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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Tue Mar 25, 2014 8:54 am

    THANKS ANDY .

    MARIUS
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Thu Mar 27, 2014 8:21 pm

    HI ,

    I got SOMETHING to day  :

    Neodium Magnets , D= 5mm H= 10mm , 0.9KG pull force at the ends







    Wheel see if there are so good as they say  

    MARIUS
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Fri Mar 28, 2014 8:20 pm

    Good Evening ,

    - I advanced a little bit with component arrangement in WTC ....
    - I mounted on a speed controller and receiver a piece of Velcro , and on PVC bracket also.....
    - I put thicker wires to the motor ....
    - I don't know what connectors to use for coupling the motor with speed controller and for connecting the battery to the speed controller ....
    - I have not forgotten either the fuse that protects the receiver or the main switch ,
    - I am most interested about what capacity should have receiver battery power ..... now I have 4,8 V = 4x1, 2V/2100mA - NiMh Accumulators ...
    - is enough to power the receiver? .....
    - if yeah, that autonomy would be? ...

    I have some questions :
    - what methods are most commonly used to isolate the power supply wires from the battery when they enter in the WTC ? ;
    - can I put Sealed Lead Acid battery terminals in the in water if it does not fit into the WTC ? ;
    - not is discharged or is short circuit?

    Pictures next days . To day batery is empty
    .
    MARIUS
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    david f
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    Re: LOS ANGELES build logs

    Post  david f on Sat Mar 29, 2014 9:28 am

    Brass or stainless bolts through the end cap work well.

    Sealed lead acid batteries are fine in water. The +12 volts terminal goes a bit green so I use a varnish/lacquer coat and some Vaseline to protect it.

    Very little current draw from the battery at 12 volts in fresh water.

    David
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Sat Mar 29, 2014 8:48 pm

    THANK YOU DAVID

    MARIUS
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Tue Apr 01, 2014 12:04 pm

    HI there ,      

    I have a bag pressure from a device to measure blood pressure and has the dimensions from the picture ...... would be enough water volume for my sub ?
    What are the most used methods to calculate what volume of water is needed ?
    PLEASE I need these answer FAST in order to buy the necessary length of the Acrylic Tube .  





    All the Best and CLEAR WATERS

    MARIUS

    willte
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    Re: LOS ANGELES build logs

    Post  willte on Tue Apr 01, 2014 5:15 pm

    the only answer I know is a bag 215mmx110mm holds 1400 ml of water that's1.4 kilo of fresh water so yours approx. 1.5 kilo
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Tue Apr 01, 2014 7:40 pm

    THANKS
    willte wrote:the only answer I know is a bag 215mmx110mm holds 1400 ml of water that's1.4 kilo of fresh water so yours approx. 1.5 kilo

    Mean wile I did some work to day:









    MARIUS
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Thu Apr 03, 2014 7:40 pm

    HMMMMM,
    No one ANY comets/thoughts/advices?!?!?!

    any way shell continue:
    small progress an Tower Sail:









    MARIUS
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Tue Apr 08, 2014 3:20 pm

    HELLO ,

    I have some questions :
    - what methods are YOU use to properly align rudders and dive planes axes from hull , and 90 degrees to one another ?
    - how to make perpendicular holes for those axis to the hull ?

    Some Pictures with any system wheel be Much appreciated .

    P.S RICHARD how did You succeded on Your Los Angeles ?


    MARIUS
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Wed Apr 09, 2014 11:35 am

    HI ,

    Is me again !.
    Where did buy when you need bronze bushings? ...... some individual/company/sites anywhere? ..... but to sell small quantities of 5-10 units and be reliable ...... meaning someone might purchased and received goods required!.

    I need some BUSHINGS for the Propeller shaft , at the aft and at the end of the shaft before the motor connection .
    And If I find some reliable Place I'll take more for the further projects too .


    MARIUS

    willte
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    Re: LOS ANGELES build logs

    Post  willte on Wed Apr 09, 2014 2:01 pm

    try E-BAY and type in prop shaft bushes you will find various sizes for r/c boats when you scroll down and from HONGKONG and takes about a couple of week to arrived you didn't say your prop shaft dia

    Tom(ADMIN)
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    Re: LOS ANGELES build logs

    Post  Tom(ADMIN) on Wed Apr 09, 2014 2:48 pm

    Ask Andy (tattooed) he'll make you exactly what you need from brass.

    Richard
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Wed Apr 09, 2014 8:06 pm

    THANK YOU RICHARD

    All I need is some Bronze Bushings for some 3mm , 4mm , 5mm and 6mm Diameter propeller shafts or other things .
    I'll prefer to buy from some one I know or known by others .
    Can I contact him on PM for these problem ?.

    MARIUS
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    Hermann
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    Re: LOS ANGELES build logs

    Post  Hermann on Sun Apr 20, 2014 9:58 pm

    profesorul wrote:HELLO ,

    I have some questions :
    - what methods are YOU use to properly align rudders and dive planes axes from hull , and 90 degrees to one another ?
    - how to make perpendicular holes for those axis to the hull ?

    Some Pictures with any system wheel be Much appreciated .

    P.S RICHARD how did You succeded on Your Los Angeles ?


    MARIUS

    Hello Marius,
    for my model of a class 212A submarine I had the problem of driving the fin planes by a servo located inside of the presure hull. I solved my problem by means of a magnetic coupling:

    http://www.theassociationofmodelsubmariners.com/t483-magnetic-coupling-to-drive-fin-planes

    Maybe this method is a little unconventional but this method suited best for my special application and demands (e.g. a watertight servo wouldn't do the Job because the model shall withstand a water pressure of 20 bar).

    Kind regards
    Hermann
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Tue Apr 22, 2014 9:37 am

    HELLO HERMAN,

    THANK YOU for the ANSWER . Is a GREAT Idea and Definitely I am going to use it .
    For the time being I'm concerned about what system to use for the Ballast Tank , not decided eat !!! .
    I took a break for couple of weeks to make the preparations for the EASTER celebration and probably next week I wheel start again on project .

    What is Your advice for these problem , I don't have ANY MARKS for the RUDDERS or DIVE PLANES ?

    - what methods are YOU use to properly align rudders and dive planes axes from hull , and 90 degrees to one another ?
    - how to make perpendicular holes for those axis to the hull ?
    Some Pictures as example wheel be much appreciated " (is QUOTE from my post on other forum ).


    Have a Great Day .

    MARIUS
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Wed May 14, 2014 10:24 am

    HI,

    I made some Hand Sketches with flooding holes for Bow and Aft . I didn't have measurements so I made them at the common sense !. What d You thing Guys ?. They Look realistic enough to be transfered to my model ?.












    What are Your suggestion for a successful transfer from paper to model , regarding the model is 3D object and paper is 2d ?

    MARIUS

    Dr.Schmidt
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    Re: LOS ANGELES build logs

    Post  Dr.Schmidt on Thu May 15, 2014 9:28 am

    I usually use amsking tape to mark structures and shapes on curved surface. Easy to lay down and easy to remove.
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Thu May 15, 2014 10:25 am

    HI @Dr.Schmidt ,

    Did You apply masking tape to a big area and then make the drawings on it or what ? . Can You give me some details or a picture/sketch ?.....
    - You draw every geometric figure on a masking tape , then cut each figure and the apply to the model ?.....
    - even so I have to draw directly on the model every geometric figure an then tray to find a way to make very thin markings with a sharp tool and so on , to make the contour before make the hole and sand/file .

    Masking tape is the same Blue Tape?

    MARIUS

    Dr.Schmidt
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    Re: LOS ANGELES build logs

    Post  Dr.Schmidt on Thu May 15, 2014 11:32 am

    Actually, you can do both. You can use thin masking tame to mark the outlines. e.g. if you have a line of flood openings, you can draw the upper horizontal tape line, then you do the lower one parallely, then you measure & mark the spacings between the openings with a pen and finally you put down the vertical lines.

    If you have a wide masking tape on which you can drwa with a pen, then put that down as evenly and flat of the area of your hull that will get the openings and then you can start making marks and mesurements on the tape.

    An advanced method:
    To get perfect horizontal and vertical lines, fix your hull perfectly level on a flat wooden board. Then you make yourself a tool: a U-shaped baord of wood that fits over you hull. The U gets two feet on its open end so that it will stand perfectly square and upright on the wooden board. Fix a pencil in the height of the desired vertical line on the U-tool pointing inwards, and then just slide the U alonge the hull. If the boat is level and the baord is straight then you will get a perfectly oriented horizontal lines on the side of the hull, no matter how complex the shape. Same for vertical lines. Position the U-Tool at the right position where the line should be and the slide the pen along the uprigght U-tool. This is how I made the markings form the rivets of my U-1 sub.

    Among others I use this kind of tape:
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Thu May 15, 2014 3:28 pm

    THANK YOU Very Much for all Your advices .
    I wheel tray to combine everything You told me into practice .
    All I need is some Perfectly Flat Wooden Board  and some small pieces of wood to make the Tool for marker pen .
    Masking tape I have enough , different sises .
    I am going to start with some drawing for the tool and then continue .
    I wheel keep You on post with .

    That Tool witch You describe , You have It ?. Can You make a small picture with it ?.

    MARIUS

    Dr.Schmidt
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    Re: LOS ANGELES build logs

    Post  Dr.Schmidt on Thu May 15, 2014 4:11 pm

    I'll try to make a picture this weekend....
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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Thu May 15, 2014 6:44 pm

    You Are The Best .
    THANK YOU .

    MARIUS

    Dr.Schmidt
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    Re: LOS ANGELES build logs

    Post  Dr.Schmidt on Tue May 20, 2014 9:51 pm

    Here are the pictures. I hope they are self explaining.





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    profesorul
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    Re: LOS ANGELES build logs

    Post  profesorul on Thu May 22, 2014 9:07 pm

    Is GREAT . Now I know what is about for .

    THANK YOU so MUCH for You answers .

    MARIUS

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