The Association of Model Submariners.

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



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Papplewick Pumping Station SUBMARINE WEEKEND.31st March - 1st April 2024.

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Bournville MBC on Sunday 11th August 2024, 10.00 i
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Most users ever online was 180 on Tue Nov 05, 2019 6:03 am

Latest topics

» Futaba -868/915mhz equipment
bladder bags EmptySun Jun 09, 2024 10:47 pm by tsenecal

» Darnell type 21 submarine, need some help
bladder bags EmptySun Jun 09, 2024 9:35 am by Deep Diver (Fred)

» Robbe Seawolf V2
bladder bags EmptySat Jun 01, 2024 1:15 am by geofrancis

» bladder bags
bladder bags EmptyTue May 28, 2024 8:30 am by Deep Diver (Fred)

» WW2 mini sub build
bladder bags EmptyWed May 22, 2024 8:10 am by david f

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bladder bags EmptyMon May 20, 2024 1:00 pm by david f

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bladder bags EmptySun May 19, 2024 11:02 am by stig58

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bladder bags EmptySat May 11, 2024 6:53 pm by 17b

» No reverse on Brushless ESC
bladder bags EmptyTue May 07, 2024 3:26 pm by geofrancis

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Our users have posted a total of 12475 messages in 1986 subjects

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    bladder bags

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    geofrancis


    Posts : 293
    Join date : 2021-09-24

    bladder bags Empty bladder bags

    Post  geofrancis Mon Jul 10, 2023 6:27 pm

    I found these drink bags on ebay a while ago and have been testing them with the idea of using them as bladders. so to convert one into a bladder i have drilled a hole in the lid and glued in a hose fitting but you could use some brass tube. just out of curiosity, i connected it to a little geared water pump and started filling. I wanted to know when and where it would burst but surprisingly the pump stalled out and the bag is solid with no leaks. even squeezing it as hard as I could with both hands i couldn't burst it.

    https://www.ebay.co.uk/itm/364223176229

    you can also get much bigger version with a hose fitting already connected.

    https://www.ebay.co.uk/itm/155510765063
    avatar
    pcjones67


    Posts : 1
    Join date : 2024-03-21

    bladder bags Empty Re: bladder bags

    Post  pcjones67 Sat May 25, 2024 2:51 am

    I have been using the kids “floaty” that you blow up and they go around the kids upper arm. Picked them up at my local Dollar General for about 3 dollars I think. Get 4 bags. It has been working well
    Deep Diver (Fred)
    Deep Diver (Fred)
    AMS member


    Posts : 270
    Join date : 2010-11-07
    Age : 75
    Location : Peacehaven East Sussex

    bladder bags Empty Bladder bag

    Post  Deep Diver (Fred) Tue May 28, 2024 8:30 am

    Back in the day we made our own bag’s, we used rubber latex and a stocking/tights, pull the stocking over a bottle of the size you wish to make your bag, then paint on the rubber latex, keep doing this until you have four or five layers, leave to dry, plug the open end with some form of stopper.
    The bag will always go back to the same shape were a swim bladder will most of the time not.
    Fred

    SimonH likes this post


      Current date/time is Sun Jul 14, 2024 9:49 pm