[PSUBS-MAILIST] Battery Pods Question

[James Frankland via Personal_Submersibles]

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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