[PSUBS-MAILIST] automatic spool

[James Frankland via Personal_Submersibles]

Hi Hank
Sorry for delay, been offline for a few days.
Havent thought of an air motor, might work.  Im not very familiar with
them.  But I have bought this fishing reel thing that I think will be ok.
It takes about 40 meters of line and auto winds.  plus its small.  However,
im not convinced it will stand up to sea water very well.  I think its 304
stainless.  Still, i'll give it a try.

Check out this that I just bought (minus the outboard cover of
course).....im super excited.  Hasnt been used for a while so needs a clean
up of course, but its got loads of tooling and accessories with it.


​

On 8 October 2016 at 12:04, hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi James,
> Been thinking about your automatic spool for towing a surface buoy, can't
> remember if you mentioned an air motor.    A simple air motor   with a
> constant air feed could work.  The motor and spool would have to be at the
> surface on or under the buoy.  I am not sure how tight an air motor is, but
> if the motor could hold back low air pressure, it could work.  The motor
> would be direct drive to the spool, in fact the air motor could be the
> spindle for the spool.  If a constant low air pressure is fed to the motor,
> the line  could be pulled out against that pressure.  The pressure it build
> up( acting as a pump)  would vent out the regulator.  The sub could pull
> the line down and when the sub surfaces, the air motor would wind in the
> line.  I doubt a vane motor would work unless the vanes are spring loaded.
> A diaphragm based motor would be ideal.
> Hank
>
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