[PSUBS-MAILIST] SeaQuestor build update

Sat Nov 3 16:12:41 EDT 2018

While on that topic David, I noticed the vertical welds on the sails are on
the sides. I presume the inside of the sails are cut already to contour the
intersection with the main hull. But just in case they have not been cut,
and since you mention they have only been tacked... are you still in time
to rotate them? Those vertical welds would normally go on the centerline,
which will make them considerably shorter. It is less labor, less
opportunity for flaws, and better looks. If too late to rotate the sails no
worry, it'll work fine on the sides but just implies extra welding.

Best,
Alec

On Sat, Nov 3, 2018 at 3:52 PM David Colombo via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi Hank, Your spot on. We only did temp tacks of the sails in the hull
> body, so that we could machine the sail / hatch ring assembly prior to
> placing it back in the hull body.
> It seems the bolted idea could be more problematic down the road, but I
> thought I would ask for other opinions.
> Best Regards,
> David Colombo
>
> 804 College Ave
> Santa Rosa, CA. 95404
> (707) 536-1424
> www.SeaQuestor.com
>
>
>
> On Sat, Nov 3, 2018 at 12:09 PM hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> David,
>> You would have to machine the sail before you weld it to the hull, in
>> that case you might as well weld the land ring to the sail then machine it
>> and then weld the sail on.  If you bolt it on you will need a groove in the
>> land to provide reinforcing, or a second ring.
>> Or I am not getting what your thinking.
>> Hank
>>
>> On Saturday, November 3, 2018, 12:04:02 PM MDT, Brian Cox via
>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>
>>
>> David,
>>                   If you send me the molds I can pour some custom lead
>> ingots that will fit your ballast design.
>>
>> Brian
>>
>>
>>
>> --- personal_submersibles at psubs.org wrote:
>>
>> From: David Colombo via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>> To: Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> Subject: Re: [PSUBS-MAILIST] SeaQuestor build update
>> Date: Sat, 3 Nov 2018 10:28:22 -0700
>>
>> Hi Guys, Thanks for the feed back. The Rails are A516 gr 70 steel and
>> already cut, but I have some 316L stainless that I will now cut for tabs.
>> I'm sure my fabricator won't mind a few more laser cut parts.  I was
>> originally going to weld the front camera mount, and rear thruster and hp
>> air rack to the hull, I'm liking the idea to make them removable as well.
>> What's a few more ss tabs. I now have a week to get my trailer prepped to
>> pick up the hull for its trip to the media blaster. Always another project.
>>
>> On a another note,  I was having a discussion with the welder about
>> welding the .75" ss hatch ring to the .75 steel sail, and then the need to
>> machine off the surface to flatten it vs why not just drill and tap into
>> the sail and bolt down the hatch to the sail with an oring. Both seem to be
>> about the same amount of work. Has any body ran this scenario before?
>>
>> Best Regards,
>> David
>>
>> On Nov 3, 2018 7:38 AM, "Alec Smyth via Personal_Submersibles" <
>> personal_submersibles at psubs.org> wrote:
>>
>> Super quick progress Dave! As a general rule, everything you can bolt on
>> I would bolt on. The tabs for bolting should be 316 SS, and everything you
>> bolt on should be 316 SS too if at all possible. And the bolts should be
>> 316. I think you get the picture...
>>
>> :)
>> Alec
>>
>> On Sat, Nov 3, 2018 at 2:27 AM David Colombo via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> Hi guys, the SeaQuestor pressure hull is well underway. All sails are fit
>> and tacked, all thru hull openings are finished.  Even the periscope tube
>> was fit today. still need to complete its penetration thru the bottom of
>> the hull.  Next week the rear tank and thruster rack, forward camera mount,
>> and bottom rail to be completed. I expect to pick up the completed hull
>> with the trailer the next  week. Then off to the sand blaster and then the
>> welder. This weekend's job is to get the trailer prepped.
>>
>> I do have a question for the group. I am debating as to whether to weld
>> the lower frame rail system to the pressure hull, or weld tabs to the hull
>> and then bolt to the frame rail which would allow for removal. The frame
>> rail system will hold the drop weight system. I would like your thoughts.
>>
>> Best Regards,
>> David Colombo
>>
>> 804 College Ave
>> Santa Rosa, CA. 95404
>> (707) 536-1424
>> www.SeaQuestor.com
>>
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