Re: [PSUBS-MAILIST] My plans for a personal sub

["Chris Jackson" <trumpetrhapsody@comcast.net>]

I'm sorry your right, I probably would have bought deep cycle when I thought
about it further, I didn't think of using at the time and I wasn't really
specifying the certain type of battery. Deep cycle would be perfect since i
plan on taking apart 2 minn kota trolling motors for my propulsion. Thank
you for you comment. In other notes I also know the dangers of using
batteries, ie the discharge of the explosive hydrogen, therefor I will
probably be mounting my batteries in a separate battery container outside
the main pressure hull.


----- Original Message ----- 
From: <labtop@interbaun.com>
To: <personal_submersibles@psubs.org>
Sent: Wednesday, July 09, 2003 10:51 PM
Subject: Re: [PSUBS-MAILIST] My plans for a personal sub


> Hi!
>
>     My name is Chris and i'm fairly new to this list, but I
> saw that you were planning to use 2 car batteries in your
> sub. I would personally not recommend this because car
> batteries are made to send hundreds of amps to a motor for a
> very short period of time, not a nice long draw of oh, lets
> say 34 Amps (24V @ 1HP =~ (800 Watts) because of motor
> inefficency). You would benifit in the long run by buying a
> pair of deep cycle batteries, which are made to put out a
> more constant current for a longer period of time. Marine
> deep cycle batteries would be the best.
>
>     Note: The lead plates in car batteries are more porus
> than the plates in the deep cycle batteries. The larger
> surface area of the car battery plates is what enables them
> to put out those hundreds of amps for a short period of
> time.
>
>    Anyone disagree?
>
>
> ----- Original Message Follows -----
> > Hi, I am a person that is VERY interested in building a
> > small 2 man submarine capable of going about 50 feet deep
> > in fresh-water. I plan on building it with a large propane
> > storage tank, and using 2 car batteries, a trolling motor,
> > a small 1.5 horsepower edger motor (with a snorkel for
> > getting air and venting exhaust) for charging the
> > batteries and compressing air, 2 regular size helium
> > storage tanks for reserve air, and 3 variable sized tanks
> > for ballast. Any advice you have is welcome and much
> > appreciated, since I have very little experience with
> > submarines but am anxious to learn more and build one of
> > my own.
> >
> >     Thanks for your time,
> >  A amateur submarine enthusiast
>
> --Chris Burchett
>
> Some People die with their dreams inside them, and some
> people die inside their dreams. SAFETY FIRST!
>
> --Borrowed from someone else.