[PSUBS-MAILIST] test schedule

Tue Apr 19 19:08:01 EDT 2016

If you couldn't get it up you'd have to build another sub to go and get
it... :)

Hope for the best, plan for the worst? Ie. Perhaps so long as you have a
cable strong enough to pull a flooded sub up and a buoy big enough to leave
on the (heavy??) cable then you would at least have the option of returning
with a bigger boat/crane/more gear.

Bear in mind that lift bags are going to need a lot of gas at that depth.
Ie. An 80cf aluminum tank at 3000PSI if fully emptied into a lift bag will
provide 2200kg of lift on the surface, but only 73kg at 1000ft depth.

But since you're leak testing in 100ft and it's way less than design
pressure, failure would be extremely unlikely so maybe as you say just
trust your manufacturing is good :)

Cheers,
Steve
On 20 Apr 2016 6:09 am, "hank pronk via Personal_Submersibles" <
personal_submersibles at psubs.org> wrote:

> I was just thinking I could put my safety valve on.  When I was getting
> Gamma ready to test, I built a valve system that went between the sub and
> the lift rope.  When the lift rope over powers two springs a HP air valve
> opens and air goes into the MBT.  I have it so might as well use it in case
> a trawl float or two fail?
> Hank
>
>
> On Tuesday, April 19, 2016 1:03 PM, James Frankland via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Sounds good Hank.  Good luck.  Take some pics for us.
> Regards
> James
>
> On 19 April 2016 at 18:29, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Hi Rick,
> No plan for recovery, just faith that I built it well.
> Hank
>
>
> On Tuesday, April 19, 2016 11:21 AM, Rick Patton via Personal_Submersibles
> <personal_submersibles at psubs.org> wrote:
>
>
> Hank,
>
> Do you have a plan to lift her back to the surface and tow her back in if
> she takes on water and becomes heavy? That's a lot of investment in time
> and money to leave her there.
> Rick
>
>
> On Tue, Apr 19, 2016 at 6:12 AM, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Big week this,  tomorrow I test the deep dive test system to 100 feet in
> my favourite lake.  Saturday I drive out to Slocan Lake, then at 6 am
> Sunday morning I will be on the lake towing Elementary 3000 to the deepest
> spot, 980 feet.    I will let her sink to the bottom on a rope and let it
> sit for one hr.  Maybe I should bring a fishing rod for the wait ;-)
>  Actually I will lift the sub a few feet often to see if it is getting
> heavier.     Hopefully it will be a success and I will pull her up and tow
> her home.  I can start diving her after all that, and in the fall I will
> haul her to Burnaby BC for the pressure pot test to 4,700 feet.  I would do
> it now but I am unemployed still ;-(
> Hank
>
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