[PSUBS-MAILIST] Manual Scrubber.

Wed Apr 22 09:14:10 EDT 2015

Hi James,

As we planned to use the manual mode quite a lot on Pilot Fish sub, we
looked at this issue in detail and I tested various ways:
1-simple snorchel without check valve: you breathe in from the nose and
exhale from the mouth.
very simple actually, if your breathing skills are not yet there, after a
few hours they will. I think if you are looking at emergency set, this
should be enough
2-rebreather mushroom valve with mouth piece: very heavy, needs to be
hanged inside the sub. Rebreather mouth piece are hard to find.
3-rebreather mushroom valve with medical type mouth+nose cover: not tested
yet. I expect less tiring.

regards
Antoine

On Wed, Apr 22, 2015 at 3:04 PM, James Frankland via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

>  Hi Hank,
>
> I'll test it first with just a pipe but yes, a mask of some sort would be
> best.  Ive been googling but haven't found anything suitable so far.  Lots
> of masks available but they all seem to work the wrong way.  ie breath in
> through a tube and breath out into the fresh air.  We need fresh air in,
> breath out down the tube.  Should be simple enough.
>
> I made one once for welding in a tight space out of a couple of snorkel
> valves stuck together.
>
> Ive got a WW2 gas mask that is perfect.  It has 2 pipes, one in, one out
> that you can connect to whatever you want, but I think id look a bit of a
> wally with it on!
>
> On 22 April 2015 at 12:32, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>>
>> James,
>> It is funny, I was just about to ask the same question.  When I saw
>> Alec's mouth piece arrangement, I figured I better get on that so I also
>> ordered a mouth piece.  My question now is, will you have a check valve to
>> make it easier.
>> Hank--------------------------------------------
>> On Wed, 4/22/15, James Frankland via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>  Subject: Re: [PSUBS-MAILIST] Manual Scrubber.
>>  To: "Personal Submersibles General Discussion" <
>> personal_submersibles at psubs.org>
>>  Received: Wednesday, April 22, 2015, 7:11 AM
>>
>>  Ok
>>  thanks.  Im going to do some experiments at the
>>  weekend.
>>  On 22 April 2015 at 11:28,
>>  Antoine Delafargue via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>>  wrote:
>>  Hi
>>  James,
>>
>>  There is a fan inside the scrubber at the base, but it
>>  also work without turning the fan on. We see several
>>  advantages in the full manual mode: power saving, robust in
>>  case of power failure, and also better scrubbing.
>>
>>  regards,
>>  Antoine
>>
>>  On Wed, Apr 22, 2015
>>  at 11:13 AM, James Frankland via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>>  wrote:
>>
>>
>>  Ahhh, hi Antoine.  Sorry, I didn't
>>  realise it was you the Pilot fish guy.  Ive seen the pics
>>  of the scrubber with the counter lung.  Is there a fan or
>>  anything drawing the air through or is that all
>>  manual?
>>
>>
>>
>>
>>  On 22 April 2015 at
>>  09:53, Antoine Delafargue via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>>  wrote:
>>
>>
>>  Hi James,
>>
>>  no I have not yet, but you ll find pictures on the
>>  Pilot Fish Project facebook page, March 10th post.
>>
>>  I have a scrubber made from Emile, and as Emile
>>  said, when you exhale through it the reaction is much more
>>  efficient.
>>  You may or may not need an intermediate counterlung to
>>  buffer the flow, depending on the breathing
>>  resistance.
>>
>>  regards,
>>  antoine
>>
>>
>>
>>  On Wed, Apr 22, 2015
>>  at 10:42 AM, James Frankland via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>>  wrote:
>>
>>
>>
>>  Exhale it is.  I'll give it a test.  Thanks
>>  guys.
>>
>>  Antoine, did you send a picture?  I didn't get
>>  it.
>>  Thanks
>>  James
>>
>>
>>
>>
>>  On 22 April 2015 at 07:09, Emile van Essen via
>>  Personal_Submersibles <personal_submersibles at psubs.org>
>>  wrote:
>>
>>
>>
>>
>>
>>
>>  James,
>>
>>  Blowing
>>  is the best . You exhale warm , moist, and CO2 rich air
>>  through the scrubber.
>>  Air
>>  exits with almost 0 % CO2 !
>>
>>
>>  Emile
>>
>>
>>
>>
>>
>>   Van:
>>  Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
>>  Namens James
>>  Frankland via Personal_Submersibles
>>  Verzonden: dinsdag 21
>>  april 2015 23:20
>>  Aan: personal_submersibles at psubs.org
>>  Onderwerp:
>>  [PSUBS-MAILIST] Manual
>>  Scrubber.
>>
>>
>>
>>
>>
>>  Hi
>>  all,
>>
>>
>>
>>  Im rigging up
>>  my scrubber with a mouthpiece for manual use.  I have one
>>  of Emile's scrubbers so the fan is at the bottom pushing
>>  air up and I have a hose at the top that directs scrubbed
>>  air into the tower.
>>
>>
>>
>>  All i'm
>>  going to do is attach a mouthpiece to the end of the
>>  hose.
>>
>>
>>
>>  With the fan
>>  off, should I be breathing in, sucking air through the
>>  scrubber?  or blowing exhaled air into the
>>  scrubber?
>>
>>
>>
>>  Plus im
>>  thinking that if im breathing in, I should maybe have some
>>  sort of particulate filter to stop
>>  dust?
>>
>>
>>
>>  How it is now
>>  without a mouthpiece.
>>
>>
>>
>>  http://www.guernseysubmarine.com/Extended_files/Page24298.htm
>>
>>
>>
>>  Any
>>  suggestions?
>>
>>  Many
>>  thanks
>>
>>  James
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