[PSUBS-MAILIST] inner tube bladder

[hank pronk via Personal_Submersibles]

Alan,I agree completely, I am just a guy that leaves no stone unturned, thats all.  Just thought it was interesting.Hank 

    On Monday, July 17, 2017 6:30 PM, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
 

 Hank,I like the purpose built flexible gas tanks because they are easy to fill & empty,& built for the purpose. Don't fancy filling an inner tube with gas through a valve!I had suggested before that if you were doing long transits with your sub you could fill up those flexible tanks at a gas station at your destination. Maybe pourtheir contents back in your car for the return trip! ( or did you say you were runningdeisel). You need some sort of structure to support them, so why not ( as previously suggested)build fibreglass tanks with some sort of diaphragm for the small bit of equalisationyou may need!Alan

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On 18/07/2017, at 11:55 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:


Alan,When you mentioned using gasoline for buoyancy and showed a nice bladder for fuel, I did a test.  I though about what would be the lowest cost bladder to hold gasoline.  I thought of an inner tube, so I went to my inner tube spot on the shelf and cut sample pieces and put them in a jar with gasoline. I don't remember how long ago that was now but I just checked the sample and the inner tube rubber appears unaffected.  When I googled the idea, I did not find positive information, so a test was in order.  I also have a long running test of an inner tube with oil in it, for over a year now I have been testing that, so far all is good.Hank

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