[PSUBS-MAILIST] Dive report: Snoopy at Seneca

[David Colombo via Personal_Submersibles]

Hi Guys,
Just an observation here. How difficult would it be to place the thruster
into a vacumm chamber, fill up the unit with oil, run the vacumm for a
little bit to draw out the air from the seal area, top off the oil as
needed and close up the thruster. Then no air exists in the thruster and is
ready to be placed into service.  Doug Jackson uses a similar method to pot
epoxy into his electronics before it cures so there are now air bubbles.
Just a thought..


Best Regards,
David Colombo

804 College Ave
Santa Rosa, CA. 95404
(707) 536-1424
www.SeaQuestor.com


On Tue, Jun 9, 2015 at 10:49 AM, Alan via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Just correcting myself. I said it would only take less than a psi
> to squeeze the existing tube, but would it??? Yes if you just squeezed
> it from side to side with your fingers, but If the water is squeezing
> evenly
> around the tube, perhaps it would take a lot of psi to get any crushing
> of the tube that would cause equalisation.
> Would be a good pressure chamber experiment.
> Alan
>
> Sent from my iPad
>
> On 10/06/2015, at 2:54 am, Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> If you just had a nipple in the top of the motor & a tube coming
> off it & going straight down it would work. But Snoopy's side
> thrusters rotate, so that would complicate things.
> I doubt it would solve the slow motor problem because it must
> take less than 1 psi to squeeze the existing tube & equalise ( if
> there are no major air voids)
> Alan
>
> Sent from my iPad
>
> On 10/06/2015, at 1:18 am, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> The oil can't float past the air pocket between the oil and water
> Hank
>
>  ------------------------------
> * From: * Jon Wallace via Personal_Submersibles <
> personal_submersibles at psubs.org>;
> * To: * Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>;
> * Subject: * Re: [PSUBS-MAILIST] Dive report: Snoopy at Seneca
> * Sent: * Tue, Jun 9, 2015 12:49:38 PM
>
>
> How to calculate the total air gap volume for a particular depth?
>
>
> Jon
>
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