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hank pronk via Personal_Submersibles personal_submersibles at psubs.org
Mon Sep 10 17:48:37 EDT 2018


 Alan, the Natural Gas Tanks are carbon fibre no steel, and they are for buoyancy.  Each tank gives me aprox 500 lbs buoyancy NET.I just scored a yellow plastic dock from a friend that is about 8 feet by 8 feet for my next attempt.Hank
    On Monday, September 10, 2018, 3:10:26 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Hank, yep you are right about the challenges of making it look sleekwith that configuration. You definitely have to protect those propanetanks, as if they were hit with a stone in transit any dents could makeyou nervous. Maybe you could have frame protection for the bottom ofthe main ballast tanks to half way up as it is not as critical as the top half.Also maybe transition to the curve of the propane tanks, but that wouldmean a fibreglass shell.Hope you don't mind all these questions, but I thought you put the propanetanks on to counteract the negative buoyancy of the pressure hull, that'swhy I assumed you would be diving on an angle with their placement.Alan

On 11/09/2018, at 8:41 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:


 Now you can see why it is difficult to make a sleek round bodyHank
    On Monday, September 10, 2018, 2:13:26 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Thanks Hank,I have saved the images as you are building so often I get confused!So with the propane tanks at the back you will be diving at an angle!( intentionally)?Alan
On 11/09/2018, at 7:57 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:


 Alan, here is a picture of the sub with all the tanks on.  The square tanks up front are mbt the middle aft tank is a mbt and the back two tanks are carbon fibre buoyancy tanks.  This picture is from my mbt test proving the amazing stability.Hank
   ----- Forwarded Message ----- From: hank pronk <hanker_20032000 at yahoo.ca>To: hank pronk <hanker_20032000 at yahoo.ca>Sent: Monday, September 10, 2018, 1:54:51 PM MDTSubject: 
 



Sent from my iPhone  

<IMG_0076.jpg>

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