[PSUBS-MAILIST] Q-Sub

Thu Aug 22 17:56:05 EDT 2019

David,  

Oh dear.  Naughty Cliff.  Methinks deliberately lighting a fire under me to get it finished.  Again he is always right.

I had engaged ABS consultant but he was not the right guy. Wanting to milk me.  Also he fell out with some others he consulted for.  Had the PVHO build supervised and tested with SGS  3rd party witnessing.  All the vessels designed to ASME.  Design FEA done to ABS  compliance by same guy who did Paul Collins’ sub.  Windows stamped Lloyds from UK. This is prototype, so not certified but if I ever get a sale then I would get full certification.  I also visited and had GL on board at the design phase.  I have a test chamber good for 400 psi and could squeeze out 1000 ft.  I tested at 520 ft for 400 ft working.  ABS wanted dual cert for sub and high speed surface craft.  GL one cert for both.  

The biggest thing I learnt was that for certification it is much easier to get OTS components already certified rather than having unique designs.  I would have an issue with arguing for sitting on the batteries even though they are LiFePO4 ones.  Lloyds will no longer do this type of thing and only handle navy and oil field work.  ABS are still the best bet for commercial but Swiss GL through Carsten Standfuss is the most cost effective.  Quotes for 3rd party start at 200k .  Any queries at $400 / hr.  

Toughest project I have done.   Would have been a lot smarter if I had consulted Cliff and Vance.  Hugh

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of David Colombo via Personal_Submersibles
Sent: Friday, 23 August 2019 2:11 AM
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] Q-Sub

Hugh, WOW!!! 

This sub is amazing, complex and the cockpit area is really cool. Have you contracted with either agency to certify this unit, or are you building to their specs and will certify prior to production models. Id be curious as the cost they are estimating for your certification.

Best Regards,
David Colombo
  <http://static.squarespace.com/static/533310a9e4b0fba62008a464/t/5339c1f2e4b041bac4e25d1b/1396294132055/?format=500w> 
804 College Ave
Santa Rosa, CA. 95404
(707) 536-1424
www.SeaQuestor.com

On Thu, Aug 22, 2019 at 6:54 AM Cliff Redus via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Better link on Q-Sub https://www.discountfishingsupplies.co.nz/site/colinkerr/Q-SUB.pdf

Cliff

On Wednesday, August 21, 2019, 06:39:01 PM CDT, Hugh Fulton via Personal_Submersibles <personal_submersibles at psubs.org> wrote: 

Cliff,

You are so organised and think of everything.

I need you down here to push me along and organise things and add your take on what needs to be changed.  Finally starting again on the batteries BMS.  Years are passing me by.  Cheers, Hugh 

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Cliff Redus via Personal_Submersibles
Sent: Thursday, 22 August 2019 7:58 AM
To: T Novak via Personal_Submersibles
Subject: Re: [PSUBS-MAILIST] weights

On the R300 we also carry a bathroom scale and try to measure operator at time of dive.  On touchscreen, operator enters this weight. The PLC calculates the ballast needed and adjust the longitudinal position of a 100 lb trim weight hydraulically so that when the boat is flooded , the boat will be approximately trim.  This is necessary as pilot is forward of the boat CG.  I have ballast weights that are color coded and are designed to sit at the longitudinal CG of the boat.  Data logger records the operator weight.  Predive checklist checks that ballast has been added.

Cliff

On Wednesday, August 21, 2019, 12:22:09 PM CDT, T Novak via Personal_Submersibles <personal_submersibles at psubs.org> wrote: 

>From my weight and balance experience flying Air Cadets we always weigh the individuals as they stand all up, including any backpacks, cameras, and water bottles.  Most people only have a vague idea how much they weigh, and the reality is that their weight changes daily, throughout the day, and depending on what they are wearing and carrying. During the PLRP I noticed that Nuytco had a bathroom scale on the crane barge and the DW2000 pilots were weighed each time they got into the sub. External weights were then added or removed as necessary.

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of hank pronk via Personal_Submersibles
Sent: Wednesday, August 21, 2019 7:11 AM
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: [PSUBS-MAILIST] weights

Hi All,

When David and I were swapping out passengers in Gamma, the weights were getting off.  It is difficult to make quick weight changes.  David and I both came to the conclusion that a weight chart is in order with well marked weights.  So when your passenger is ready, just look up their weight on the chart and cross reference the required weight in the sub. 

Hank

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