[PSUBS-MAILIST] FW: Casper 2

[hank pronk via Personal_Submersibles]

 Hi Graham,I estimate your pods to be almost neutral with three batteries if the pods are made from 1\4 in plate.  Your problem is coming from the heavy steel framework and steel mbt's.   Just keep adding weights inside the hull until it is stable.  Then try to sink her, hopefully it will not sink.  Once it is stable just keep adding  weights until it sinks.  Once you can get it to sink, remove the weight and add it up.  Then start filling your pods with that amount of lead.Hank
    On Tuesday, July 31, 2018, 3:47:48 AM MDT, graham bayliss via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
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Hi 

  

my name is Graham Bayliss I  have been building Casper 2 for many years and now find my self frustrated by science I have craned my sub into the water three time only to be frustrated by buoyancy problems I have redesigned my battery tubes to carry more batteries. this has meant they are very buoyant and being on the bottom my boat they tend to want to turn her on her side. My housings measure six feet long by fourteen inches I can not calculate how much weight I need to make these negative buoyancy I have three leisure batteries in each housing plus one hundred and fifty pound of lead on top. this does not counteract the upforce which each housing is subjecting my sub to. I am lost as to how I can over come my problem  as  she is determined to roll . can some one help me please.

  

regards 

  

Graham

  

Pictures  of Casper 2 being built are on the site if you need to look at what I have built.
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