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Re: [PSUBS-MAILIST] question about general design?
I'll suggest another option which we have found works very well. Use a brass Ajax thread screwed into a socket in your drop weight. The old Perry pin-through-a-slot works well, but only the threaded screw version lets you crank the dropweight up snug. Perry drop weights bang around in a sea way when the sub is being towed and I always worried about tearing something up. Never did, but it always made me wince hearing 1000#s clunk around under my feet. Mind you, there is always that Pisces "free-release" problem with this threaded deal (that is when you are down a kilometer or so, drinking coffee and doing your job, and the brass Ajax thread drop weight screw snaps off and dumps your custom made 500# drop weight into the silt and sends you skyward without warning. This is known in the biz as a BAAAAD THING!
Vance
In a message dated Wed, 8 Aug 2001 9:42:00 AM Eastern Daylight Time, Lew Clayman <lew_clayman@yahoo.com> writes:
> --- Captain Nemo <vulcania@interpac.net> wrote:
> > "What mechanizism or used to hold drop weights in place. "
> >
> > A simple mechanical linkage will work. A stainless shaft penetrating the hull via a
> > watertight coupler (machined sleeve with O-rings); there's a lever on your end, and a cam-lug on
> > the end that connects to a key-way in the drop weight. Turning the lever rotates the shaft,
> > aligns the lug with the keyway and the weight freefalls away.
>
> Yes, this could really save your life (or not).
>
> Remember the KISS principle: Keep It Simple and Stupid.
>
> -Lew
>
> =====
> "Yo no soy marinero / Soy capitan"
> - Traditional Mexican Lyric (La Bamba)
> =====
>
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