[PSUBS-MAILIST] External K250 stiffeners?

[hank pronk via Personal_Submersibles]

 Dan,If I were welding rings in a new sub I would stand it on end and stand up inside the cylinder and weld in comfort.  Not because it is the easies position  for quality welds 'wink wink"Hank
    On Friday, September 8, 2017, 1:48:10 PM MDT, Daniel Lance via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Ian,When I build another sub I will definately put the stiffeners on the outside . Yes , there is more welding involved ( they must have full penetration welds ) . But with the hull on a set of rollers you can do all the welding standing up instead of crawling around on your hands and knees in a cramped space .Dan Lance

On Sep 7, 2017 2:50 PM, "irox via Personal_Submersibles" <personal_submersibles at psubs.org> wrote:

Hi

keeping the K250 stiffen questions momentum going.

I'm restore-modding a early K250 (more like the last of VAST MK3s sold as a K250 after VAST and Kittredge parted ways).  One change I'm considering fitting external stiffeners to replace the internal stiffing/ballast tank structure.

Also, if I was building from scratch I would be making the same consideration.

Anybody else thinking about this or have thoughts about this?

Thanks,
  Ian.
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