[PSUBS-MAILIST] Pressure Test

[David Colombo via Personal_Submersibles]

Hi Alan, Looks great!, what Lumens did you get with this design?


Best Regards,
David Colombo

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


On Mon, Jun 26, 2017 at 4:48 AM, hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Alan,
> That really turned out nice, how did you mould the polyurethane? that
> stuff sticks like mad.
> I would leave the white gasket, it looks fine.  Either the gasket
> thickness is not even or the seat is not perfectly matched to the Lenz.
>
>
> On Sunday, June 25, 2017 10:30 PM, Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>
> Pressure tested my light to 1000 psi for an hour using the water blaster
> & no leaks! I didn't have a pressure relief valve in the system as I do
> with
> my air pressure set up & it was a pain getting the chamber lid off. I had
> thought the water blaster would have leaked a bit of pressure but it
> didn't.
> The sealing system for the wires was a 3 layered process; encapsulating the
> wires in the epoxy, then coating the insulation for an inch up from where
> they came
> out of  the epoxy, & over the epoxy with a 2 part heat activated pvc glue
> that
> they use on inflatable boats. This glue worked a lot better on the pvc
> insulation
> than several others I tried like E61000 (supposed to be better than shoe
> goo),
> 3M 5200 & polyurethane.
> Over this, to tidy it up & act as a cable support, I moulded polyurethane.
> In the attached photos the white ptfe gasket that the lens sits on looks
> wet
> but it is just the compression of the lens against the gasket. I don't
> like this
> from a cosmetic point & may change it. The 2 objects with the light are the
> male mould for the polyurethane cable support & the silicone mould for the
> same.
> Alan
>
>
>
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