[PSUBS-MAILIST] Motor modification

[Alec Smyth via Personal_Submersibles]

Hi James,

I totally agree on the difficulty of filling up. Well the filling is easy,
it's getting rid of the last bubbles that is the real issue. For a thruster
compensation bladder, the last thing I was testing on Snoopy before her
sale was little plastic squeeze bottles. Google "plastic accordion bottle"
and you should get some hits. Like this:

https://www.grainger.com/product/5FVF7?gclid=CjwKEAiAvZTCBRDvnoOaoa2j3xISJABxPjN9ekm4clPKgKRoIN07DTRepXFPSkcSB1GAMOTILj3jBRoCcMfw_wcB&cm_mmc=PPC:GOOGLEPLAA-_-Adhesives%2C%20Sealants%20and%20Tape-_-Dispensing%20Guns-_-5FVF7&AL!2966!3!50916782397!!!g!104636426757!&s_kwcid=AL!2966!3!50916782397!!!g!104636426757!&ef_id=VzemaAAAAJR6JHK7:20161205180023:s


Best,

Alec

On Mon, Dec 5, 2016 at 7:28 AM, James Frankland via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi All
>
> I have been talking to Rick about motor compensation which has got me
> thinking.
>
> I originally did my motors like other psubbers have done with the rubber
> tubes around the sides, but have found them a real pain to fill.  Problem
> is the location of the tube, plus the tiny bit of protruding pipe nipple on
> the inside.
>
> So, I modified the motors by drilling a hole in the top part of the
> aluminium endcap and use that now as the vent\final fill.  Its better, but
> still awkward.
>
> I have suggested to Rick this idea, which I am tempted to adopt myself.
> Blocking off the existing side mounted pipe nipples and
> filling\venting\compensating all from the one top hole.  There would be a
> rubber bulb of some sort on the end of the pipe.  2x pictures show filling
> and operation.  Appologies for rubbish drawings, im at work.
>
> What does everyone think?
>
>
> ​
> ​
>
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>
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