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<div>Hi Philippe,</div><div>It is nice to hear of another project getting under way. I think if you are building from scratch, the side mount MBT's are the only way to go. You can use four tanks with a space between the tanks for the side thruster wash. I think however that steel tanks might be to heavy for a K250 , making the sub behave poorly when you transition from floating to sinking. You will have to do some calculations first, I would recommend aluminum tanks over fibreglass. My sub also had lead acid batteries in a sealed compartment with an air flow system for charging. I went with AGM batteries for the simplicity and added safety. </div><div>Hank</div><div><br></div>
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On Tuesday, September 5, 2017, 6:56:48 PM MDT, Philippe Robert via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="yiv0917626317"><div dir="ltr">Hi All,<div><br></div><div><div>I undertook the construction of a k-250 submarine. I have most of the metal components to make the pressure hull. I have some questions about batteries, MBT and acrylics dome.</div><div><br></div><div>-Is it a good idea to use deep cycle lead-acid battery inside the pressure hull ? I read on old psubs mailing list to open the hatch when the batteries is charging. (h2)?</div><div><br></div><div>-Do you think that the MBT can be replace by steel saddle tanks ? I have no idea how to make the original one and if I can upgrade the original MBT it will be great.</div><div><br></div><div>-I try to find someone to make my acrylic dome with some experience in submarine dome forming.</div><div><br></div><div>-I live in Quebec, Canada. So, if you know k-250 owner near New Hamphire, Vermont or Main it will be great if I can take a look on the sub. An hour or two, I do not want to disturb the owner.</div><div><br></div><div>tanks</div><div><br></div><div>Philippe </div><div><br></div><div><a rel="nofollow" ymailto="mailto:phelop@gmail.com" target="_blank" href="mailto:phelop@gmail.com">phelop@gmail.com</a></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div></div></div></div>_______________________________________________<br>Personal_Submersibles mailing list<br><a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target=_blank>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div>
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