[PSUBS-MAILIST] SeaQuestor build update

Sat Nov 3 15:51:24 EDT 2018

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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