[PSUBS-MAILIST] buoyancy

[vbra676539 at aol.com]

The wood will compress and take on water. Forget that. Get some trawl floats. Nokalons should be available up in your neck of the woods. And you can always use them later.
Vance



-----Original Message-----
From: Land N Sea <landnsea1 at hawaiiantel.net>
To: personal_submersibles <personal_submersibles at psubs.org>
Sent: Thu, Nov 7, 2013 2:19 pm
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


_______________________________________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs.org
http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20131107/6c76b23a/attachment-0001.html>