[PSUBS-MAILIST] Battery Pods Question

[Rick Patton via Personal_Submersibles]

Sounds like it’s done already? If you are happy with the quality of the
welding , then can you notch the flange only where the tray hits?
Rick

On Tue, Jun 12, 2018 at 6:59 AM James Frankland via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi Guys,
>
> Brian.  The flanges are welded to both the tube and endcap.
>
> Rick.  The reason I made them protrude onto the inside is because I wanted
> plenty of material at the joint, and didn't really know any different.   I
> just made it like a hatch which protrudes on both sides.
>
> Sounds like the flush method will be ok.  It will be full penetration
> welded of course.
>
> Thanks
> James
>
>
>
> On 12 June 2018 at 14:44, Rick Patton via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> What was your reason for having the flange come in less than the ID of
>> your pipe?
>>
>> I did mine flush like Hank did and one thing that comes to mind is that
>> it would create an area that might be hard to see and effectively wire
>> brush or grind to deal with future rust down the road? That was something
>> that I thought about for the hull side of the web on my T bar frames.
>> Rick
>>
>> On Tue, Jun 12, 2018 at 6:08 AM hank pronk via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>> James,
>>> I can't see any real benefit to having the flange ring protrude inside
>>> the pod.  If the ring is flush with the inside, the load still transfers
>>> directly onto the pod wall.  You can still have a full penetration weld
>>> from one side and grind it clean on the inside.  So why not? that would be
>>> how I did it, and you really have no choice if you need the height for
>>> batteries.
>>> Hank
>>>
>>> On Tuesday, June 12, 2018, 5:44:49 AM MDT, James Frankland via
>>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>>
>>>
>>> Hi All
>>>
>>> I am making new battery pods for Skadoc.  I am thinking of making
>>> the removable ends slightly different to how I did it on the K.  On that, I
>>> put the flanges on to make like a standard flanged end.  However, I made
>>> them like you would a hatch, ie with the centre of the flange being welded
>>> to the centre of the tube.  So there is overlap on both sides of the ID and
>>> OD of the tube.  Bit difficult to explain.  Pic here of the K ones when I
>>> was making them.
>>>
>>>   K350 pod ends.
>>>
>>> The problem with these is that the overlap onto the inside diameter of
>>> the tube makes the hole smaller and you cant slide the trays out.
>>>
>>> With the new one, I have made rolling trays and I want them to slide
>>> straight out.
>>>
>>> So, I am thinking I can make the flanges flush with the inside diameter
>>> of the tube.
>>>
>>> I have not started this part yet, so any advice greatly appreciated.
>>>
>>>
>>> ​
>>> Not a very good picture, but new trays with rollers made.
>>>
>>> Thanks
>>> James
>>>
>>>
>>>
>>> ​
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>>
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