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Re: [PSUBS-MAILIST] SUBSAFE
Captain Nemo schrieb:
> The materials, construction methods, and basic systems used in the '60s are
> still in use today. Every homebuilt is an experimental, at least until it
> is proven reliable. For the guy trying to learn how to design and build his
> first sub, it's all experimental. Every original design is experimental.
> Thus, the time for checking out experimental subs goes on even now, and will
> as long as homebuilt submarine enthusiasts continue to design and build
> their own boats.
>
> Pat
Pat okay I agree - but ..
In 1987 I build the first version of the main-engine of Sgt.Peppers from
a old car starter engine. I have still not very much knowledge of
electric - only very less.. The power was I think 12 V with 49 amp. The
strongest relais I can found on the market was 12 V 40 amp.
(I need some relais to switch the engine to the reverse thrust) I
connected two relais of 12 v 40 A parallel line together to get one of
12 V 80 A. Works well during test onshore with the propeller in air.. I
found no security switch for this currents in the car shop - so I work
without one.. During the first drive in water I switch the reverse
button - and first the one relias burn fix and out and a milisecond
later the other one..
- was this experimental ?
- or just unsafe ?
I think any electrican or somebody with knowlege about electric on Psub
can easy explain why this don't work - and why the relias burned out
just some 6 inch away from my face. Lucky I manage to shut off the main
battery (3,8 Kwh..of power) dissconector switch before a bigger
accident turned my face in something others.. (I was 22 in 1987 and my
girlfriend at this time like my face in the version it was during this
time..)
Today - if I have something to design on a electric of CSSX - I ask the
right people - here on Psub or on the yard. Why take a experiment in a
field which is proven and safe since over
decades of years ?
Cssx will get a fuelcell drive.. this will be my main experiment on this
boat - but I do not really want to find out how to close securit a 100
Kw electric main engine in a sub full of hydrogen and oxygen.. So I ask
allways for help if I found that the physics is a little outside my
knowledge.. The other experiment on Cssx will be a boat without
seawater pipe inside
the boat - but with remote controlled outside main vales for all soft
and hard tanks.
To my knowledge nobody did this before to control such a vessel - so
this will be a new
field - because the expierence is not make up today. Will report about
the results..
If somebody designed something and display it - maybe in coulor pictures
on Psub and maybe very proud.. - and complete wrong or unsafe from a
standpoint of a professional- how should we handle that ? Just make a
notice for the archive files - were they are quick forgotten ?
regards Carsten