[PSUBS-MAILIST] Sub hot water bottle.

[James Frankland via Personal_Submersibles]

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 the
> set 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 of
> tubing 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.
>
> Regards
> James
> ​
>
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