[PSUBS-MAILIST] Pressure Test

[Alan via Personal_Submersibles]

The Titanic is a long way off shore Hank, are you sure your
paddle steamer will make it?
If you built it for two you may be able to get some sort of sponsorship from
wealthy businessmen wanting to do the dive, & then do multiple dives
while on location!
It would be a great project for a film crew to follow from beginning to end.
You would be a good bet for them as you have already built a number of
subs, & adept at the heavy haulage. Phil would have some contacts with
Canadian discovery channel wouldn't he, they followed his Curasub.
Alan

Sent from my iPad

> On 27/06/2017, at 5:00 AM, james cottrell via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hank,
> 
> Sounds interesting. Do you have a plan to take the sub out to the site?
> 
> Greg
> 
> 
> From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
> Sent: Monday, June 26, 2017 7:54 AM
> Subject: Re: [PSUBS-MAILIST] Pressure Test
> 
> 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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