[PSUBS-MAILIST] (no subject)

[hank pronk via Personal_Submersibles]

 Rick, have you looked at golf cart 12v batteries?  They are built for your application.  Here is a 12v golf cart group 27 agm battery on eBay.  I looked at a wire size chart and your #2 cable seems to be okay, the chart was a bit confusing with all the wierd colour indicators ;-)I use the heaviest cable I can, Gamma has #4 cables, to be fair though, I had the cable, it is welding ground cable.  To save money I made my own cable ends also.  With 6 volt batteries I need a lot of cable ends.  I take soft copper tubing, in my case the cable is almost 1\2 inch so 1\2 inch copper tubing and I cut 1 inch or so lengths and slip over the bare cable, then hammer it flat and drill a hole.  It works so well, I do the same for all the cables in Gamma.  The last dive I did, I used temporary 12v motors and I wired the system up with the recommended size.  I always go double the size but in this case it was temporary so I was not worried.  About 1\2 mile from shore I felt the cables and they were uncomfortably  warm in my opinion.  I was determined to continue and only half way to my target, so I water cooled the wires where they met the penetrators.  The cable ends were also a bit light (not home made)  so I was worried I might over heat the penetrators.  I took paper towel and soaked it and then stuffed that around and under the cable ends.  I put water on the towel periodically to keep the penetrators cool.  I made the dive and made it back okay.  The moral of the story is go BIG with wires and cable ends.From my experience, I have to say that you will defiantly use all the horsepower you have more often that you think.  In fact you will wish you had more, or maybe that is just me ;-)Hank    On Sunday, October 29, 2017, 3:07:48 AM MDT, xxx xxxxx <mp13 at live.ca> wrote:  
 
 
Golfcart 12V AGM Dry Cell VMAX MB96



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20171029/2ac311f8/attachment-0001.html>