[PSUBS-MAILIST] Sub hot water bottle.

[Alan James via Personal_Submersibles]

James,you could use this regulator for either air or oil.Just make sure there is a long enough tube run from the regulator to the motor,so that no oil escapes if it expands too much.I haven't got one of these regulators yet; but Cliff is using one.Cheers Alan
      From: James Frankland via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Wednesday, September 23, 2015 8:48 PM
 Subject: Re: [PSUBS-MAILIST] Sub hot water bottle.
   
That's really helpful Alan thanks.  I've put this in my saved docs folder.  Im still going to use oil for now but then when it gets to winter I might change it.   I think I can eek out a tiny bit more power with an air compensated motor, plus I find it quite a hastle filling and emptying the aft motor as its really awkward to get at. Anyway, thanks again.
James
On 22 September 2015 at 20:43, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:



James,have attached a diagram of it, in case it helps.Alan


      From: James Frankland via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Wednesday, September 23, 2015 2:53 AM
 Subject: Re: [PSUBS-MAILIST] Sub hot water bottle.
   
Hi Alan,I was just looking at that regulator.  It has a max inlet pressure of 20 bar.   Unless im missing something isn't a normal scuba regulator a better option? James


On 22 September 2015 at 09:53, James Frankland <jamesf at guernseysubmarine.com> wrote:

Hi Alan, Interesting idea.  Looks good.  I might put that on my list of winter modifications. Agree, the water bottle looks a bit amateur, but I think it will be ok and i'll hide it out of the way.   James
On 21 September 2015 at 21:05, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

James,Cliff is using this regulator as a compensating device.http://ph.parker.com/us/en/stainless-steel-pressure-regulator-pr354-pr364-series-miniature
I intend to use it also. You attach it to your air line & dial in your required overpressure.It has a hole in the handle spindle that enables the regulator to keep theset pressure above ambient & also exhaust any over pressure as you ascend.The idea is to mount it with the handwheel facing down to avoid any water getting in the system,& additionally as a caution run a tube down off it.You can either fill your motor with oil; in which case any oil expansion can run up the length oftubing from the regulator to the motor, or just air compensate.Untried apart from one dive by Cliff.Looks more proffesional than a hot water bottle:)Cheers Alan

      From: James Frankland via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Tuesday, September 22, 2015 1:31 AM
 Subject: [PSUBS-MAILIST] Sub hot water bottle.
   
This is my new bladder for the aft motor.  The old one was relying on the fuel bulb to act as the bladder, but I had the should provide a much better bladder.
The small wheelbarrow inner tube was an alternative idea.   RegardsJames
​
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