[PSUBS-MAILIST] G.L. summary Pressure Hull

[Vance Bradley]

How much did your amperage increase at depth? Was the load increase linear?
Vance

Sent from my iPhone

On Dec 14, 2013, at 1:07 PM, hank pronk <hanker_20032000 at yahoo.ca> wrote:

> I just did a 1/2hr run on my new drive with the shaft tube full of water and under 500psi.  The seal works perfectly and there is very little heat build up.  I was surprised how much the motor pulls down after 200psi.  I assume it is from the shaft pushing into the thrust bearing.  Also I am running the motor on 12v because it spins to fast on 24 with no load.
> Hank
> 
> 
> On Thursday, December 12, 2013 1:27:28 PM, hank pronk <hanker_20032000 at yahoo.ca> wrote:
> Vance,
> Thank you, it only took me two tries to make the assembly and 5 tries to make the shaft.  Rookie machinist and all.  :-)
> Hank 
> 
> 
> On Thursday, December 12, 2013 12:36:27 PM, Alan <alanlindsayjames at yahoo.com> wrote:
> Carsten,
> Your friends in Hamburg wouldn't be happy with the get wet solution.
> As an after thought on my ambient, I put a AOP valve above my
> head & through the dome. It works the opposite way round, so that if
> I dive too quick & the hull doesn't equalise, I get water on my head.
> The hull is equalised with divers regulators so better to get wet
> than the regulator diaphragm rupturing.  The manual operation of the
> AOP let's me flood up to the top of the dome in an emergency exit,
> as there may be too much force on the latches to open them with
> air in the dome. 
> Alan
> 
> 
> Sent from my iPad
> 
> On 13/12/2013, at 7:33 AM, " " <MerlinSub at t-online.de> wrote:
> 
>> 
> 
> If you have an over-pressure valve handle obstructing the Alan
> movement of the hatch latch handle, it would need to be
> spring loaded or you would create the problem of the possibility
> of diving with the valve open later on.
> 
> 
> Yes, and if you dive with a open valve you get wet
> learn to close it and learn to read you "pre-dive" checklist. 
> 
> :-O   
> 
> SL not required an blocking mechanism on the hatch - just an 
> simple spring loaded automatic overpressure valve. 
> Because of the automatic there is no need to block the hatch. 
> The air sound of the working valve is a clear signal not to open the hatch.
> The function of the valve should be anyway mention in the written manual. 
> 
> very best regards
> 
> Carsten
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