* 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 2018 and we will promote them on this Forum

.

,
.
.

. ,

,

.
.
.

.

.

,,,,

.Barrow in Furness MBC, Sub Day and Regatta,Sunday 23rd September 2018. (DATE CHANGE!)

Who is online?

In total there are 3 users online :: 0 Registered, 0 Hidden and 3 Guests :: 2 Bots

None


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

Latest topics

» building a 1/96 THRESHER r/c submarine
Today at 2:07 am by merriman

» Operating torpedoes..
Fri Sep 21, 2018 12:46 am by merriman

» 3d printed Alfa Class Russian Submarine
Thu Sep 20, 2018 9:47 am by david f

» The Model Show - indoor swimming pool sailing - Poynton,Stockport 15,16th September 2018
Thu Sep 20, 2018 9:42 am by david f

» 433/458 Mhz openLRS in a swimming pool.
Tue Sep 18, 2018 4:56 pm by david f

» Arduino proportional control of a piston tank
Tue Sep 18, 2018 3:23 pm by tsenecal

» Making end caps
Tue Sep 18, 2018 10:17 am by SWEnick

» Poynton Model Show 2018
Mon Sep 17, 2018 6:20 pm by david f

» Hi from Sweden!
Mon Sep 17, 2018 1:45 pm by SWEnick

Statistics

Our users have posted a total of 10646 messages in 1746 subjects

We have 785 registered users

The newest registered user is Glenn69


    How to test for leaks

    Share
    avatar
    david f
    AMS Treasurer

    Posts : 1984
    Join date : 2010-11-10
    Age : 68
    Location : Cumbria

    How to test for leaks

    Post  david f on Tue Aug 12, 2014 9:24 am

    I've copied this over from our Facebook site. It is a common problem and it seemed best to copy it over here rather than have it just "disappear" over there.

    Hi guys I've got my hands on an eden trafalgar and it all seems to be functioning well after having to change some servos and receiver and a few other bits however I'm finding that one of the sections of the pressure hull seems to be leaking not 100% sure where leak is. I also read that I should be able to put a small amount of pressure into the hull through air valve which mine doesn't have. Is it important to get pressure in? I'm guessing it's to try and help maintain the seal? Does anyone know if I can buy replacement seals for the pressure hull or is this a make myself job?

    LikeLike ·  · Share

    Seen by 34

    David Forrest I find that putting a low air pressure on the sub from an inflated balloon is an invaluable leak test. Connect the balloon and dunk in pond or bath (home test tank.) bubble stream indicates leak. Even without the dunk an inflated balloon after 20 minutes (say) shows sub seals are OK. If you don't have a connection built in to your model, drill and tap or just glue a "nipple" somewhere on the sub - only needs a small hole. (I can't see that positive air pressure is important other than for leak testing - 1 bar internal pressure would only protect against less than 10m depth.)

    August 10 at 2:19pm · Like · 1
    ..

    Deep Diver When I did not have a test tank I use some soapy water on the joints

    August 10 at 2:49pm · Edited · Like · 1
    ..

    Steve Juden Soapy water around the seals, joints and any connections where wires, cables or push-rods exit the hull should show a leak, (a gas fitters test)

    August 10 at 3:51pm · Like · 1
    ..

    Paul Cook Im sure if you have a leak around a seal and its down to the seal, Chris Cloke at Sheerline will help you out for a couple of £'s maybe.

    Yesterday at 8:04am · Like
    ..


    James Kislingbury Thanks guys, I've done a mixture and ended up using a bit of vaseline and the seal is absolutely great. I will give Chris a call and try and get some replacement seals for the long term. Thanks for advice.

    15 hrs · Like

      Current date/time is Wed Sep 26, 2018 8:15 am