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[PSUBS-MAILIST] Propane sub



Craig,
If you plan your dives in the range of 15-30Ft why don t you design an
ambient pressure sub, it is much more economic, can be in fiberglass, with
any shapes, and there  is no bottom time limitations.

  Because I don't want to.

As far as your propane design you elude the questions, I am not talking
about the propulsion, but the ballasting, you offer little consideration for
the large amounts of gas that you WILL vent in the environment with the
risks of explosion for you and others.

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 Look, dumbass- I've said it before- you can BURN the propane you vent. 
Is that clear enough for you? And you don't have to vent it in the first place
if you use your head.

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 I seriously doubt that you will be
able to operate your subs in the US, unless you establish that propane canot
be vented outboard and ballast tanks are sealed and hard ballast type.

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And your point is?   I see nothing here that is insurmountable.  That isn't
evasion, it's recognition that I know what to do with propane and you
apparently don't.

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I don t know about the economic aspect of your sub, when i run my sub it
costs less than $100 per day  in compressed air refills and battery charge.
O2, ???, why do you think it is required to put an anti backfire system of
propane systems, if you were right that propane inside cannot ignite then
there would be no need for backfire system.
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Are you having problems reading?   I already said I'd include checkvalves and
flashback protection.  That's just redundancy in case the propane is
contaminated with air, and that is an operational issue, meaning it can be
dealt with by proper protocols.  If you do that, there IS no need for the
flashback protection....but I want it anyway, as a backup. Are you suggesting
that I not take the precaution out of some macho bet ?   Don't expect me to be
stupid just because you are.  And I anticipate less than $15 per day in the
type of operations I want to carry out.
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however, I ll get for you some abstracts and equations on my chemistry
engineer course to show you breakdowns of the propane molecule without O2
under specific circumstances.
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"Breakdown" is not combustion.  Nor is it even exothermic without an oxidizer.

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I do know how to turn "on" my computer and should not you make fun of people
you don t know nor their background.
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So what the hell are YOU doing?
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I don t know if you ever built a sub, I built 28 mini submarines , 2 of them
diesel with 100 mile range, this is my business, I am a USCG registered
submersible manufacturer, but you don t care of USCG anyway you just said
that you screw regulations.
by the way regulations are made to prevent people like you from making
hazardous machines.
regards
Herve
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 What a waste of time!   And if I want to make a "hazardous" machine that puts
only me at risk, what's the problem?   Do you really think it's appropriate to
try to "save me from myself'?   

  You might be a great sub builder, Herve, but you're an idiot as near as I can
 tell.  If I haven't gotten through to you yet on these technical points, I can
 only conclude that you are either stupid or can't read- or you are just
intellectually dishonest and are trying to talk me out of this despite knowing
that my points are valid.   I'm not going to repeat myself for you again, but I
 can tell you that you have demonstrated to me that you haven't got a clue
where chemistry is concerned.  If you really had good technical objections, I'd
 address those- but so far you've been incredibly lame.  

Craig Wall