[PSUBS-MAILIST] buoyancy

[David Colombo]

Hi Rick, here is a quote on the floats I just got.  The 551 float is $10.80
ea., less 10% per carton of 18.  The 364 float is $6.00 ea., less 10% per
carton of 72. I will be ordering some of each, but not enough for 18 or 72.

David Colombo
On Nov 7, 2013 12:02 PM, "Smyth, Alec" <Alec.Smyth at covisint.com> wrote:

>  Hi Rick,
>
>
>
> If you need some cheap buoyancy that will go to significant depths, I’d
> recommend fishing floats you can get here:
> http://trawlworks.com/floats.htm
>
>
>
> I guarantee you’ll find uses for them afterwards, whether it’s as
> emergency release buoys, mooring buoys, or whatever.
>
>
>
>
>
> Best,
>
>
> Alec
>
>
>
> *From:* Personal_Submersibles [mailto:
> personal_submersibles-bounces at psubs.org] *On Behalf Of *Land N Sea
> *Sent:* Thursday, November 07, 2013 2:18 PM
> *To:* personal_submersibles at psubs.org
> *Subject:* [PSUBS-MAILIST] buoyancy
>
>
>
> I was thinking of testing both my battery pods to 600’ before I weld them
> to the hull so that if there are any issues with leakage I would still be
> able to get them on a lathe. I added two vents per pod with O rings so that
> I can push/suck air across the batteries while charging so there are a
> couple of more places for leaks to occur. I did the calks' and they weigh
> in at 295 LBS. each dry with a negative displacement of around 30 lbs. I
> was hoping that they would barley float with no batteries in them so that I
> could weight them just slightly negative for ease of launching and
> retrieving but that’s not the case. I need to come up with about 30 lbs. of
> positive buoyancy and don’t have any syntactic foam so I figured I could
> strap some 4” X 4”, on them to achieve that. This may be a dumb question
> but does anyone happen to know the per foot buoyancy of a 4” X 4” in sea
> water? If not I’ll head down to the ocean and start testing.
>
> I also mentioned the other week about my desire to omit the plate that is
> welded to the pressure hull and battery pod of a K-350 and was wondering if
> any one could comment on that.
>
>
>
> Rick
>
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