Re: [PSUBS-MAILIST] Main Tanks Question

On Fri, Mar 11, 2011 at 9:22 AM, Land N Sea <landnsea1@hawaiiantel.net> wrote:

Hi James,

I am building a K-350 and have always admired Dan H. beautiful job he did on his MBT,s. I was planning on glassing in the bottoms of mine as well with a 6" opening in the centers or one in the front and one in the rear of each one to prevent the "burping action" when towed by a boat.

I see what you were saying about where the MBT,s interface with the pressure hull as well as the problem with the strap that holds them in place.

I have done some glass work in the past but wasn't looking forward to this step in the future as I don't think I have the talent to make the finish look as nice as Dan's but what the heck.

I would love to see any/all pictures of your MBT,s and any advice on how you formed them, got a fair front curve on them etcetera.

Thanks

Rick Patton

From: Smyth, Alec

Sent: Friday, March 11, 2011 5:51 AM

To: personal_submersibles@psubs.org

Subject: RE: [PSUBS-MAILIST] Main Tanks Question

James,

I have the standard tanks, but based on using them this is one area where I would suggest you consider a significant departure from the plans, and not just to make them look better. Specifically, I would close the bottoms and provide downward stovepipes. But you will find that hard to do with the standard method of attaching the tanks with a strap around the hull (I actually glassed in the bottoms in an attempt, but ended up undoing it). I would suggest giving the tanks three sides and a bottom, as opposed to using the pressure hull as one of the sides, and bolting them from underneath over supports that will need to be a little different than the standard ones. Just something to think about.

Thanks,

Alec

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From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of James Frankland
Sent: Friday, March 11, 2011 9:49 AM
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] Main Tanks Question

Hi All.

Im finally at the stage where i am starting on my main tanks. Ive decided just to stick with the ordinary ones shown on the plans, but i'd like to jazz them up a bit like Dan H has done as i think they look a lot better.

Question is: For those of you who have "modified" K350 main tanks, did you make the framework as per the plans and adjust the tanks to fit, or make the tanks first, and modify the framework to fit the new shape. I suspect the latter. I was hoping to be able to get the metalwork complete and then get the sub painted. If i have to make the tanks first, it will mean more time unpainted. Anyway, any thoughts suggestions always welcome.

Many thanks

James