In a message dated 5/24/2004 7:12:11 PM Eastern Daylight Time, ojaibees@ojai.net writes:
> > I have an idea for a trim ballast system. It
> > basically consists of a long pipe, probably stainless 1" dia, which
> > would run the length of the sub. Running through the inside of the
> > the pipe would be a long screw which, when activated would turn either
> > clockwise or counter clockwise, kind of like a grain silo system. The
> > screw would move lead shot either fore or aft depending on where you
> > need to trim the sub. At each of the ends there would be a space
> > where the lead shot would accumulate but with a slight pressure
> > (possibly from a spring ) kind of like a piston arrangement so that
> > the lead shot would always be availible to feed in which ever
> > direction you would need to balance. Does anyone know if lead shot
> > would move like that? It would definatly have to be geared very low.
> >
> > Brian
I would not try lead shot - it would jam, mold a cyl. shape plug of lead to your required weight and leave a hole in the middle the simple tap it, or mold (when you pour the lead) a big nut / wing nut etc into it so when you turn the rod it simply moves.... simple, and wont jam on you...... just an idea.......
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