[Public-list] Fw: Shackles for New Mast Top

[Brian and Elaine Timmins]

Yes. Sorry, sometimes my mind slips.
Brian
----- Original Message ----- 
From: "Gordon Laco" <mainstay at csolve.net>
To: "Alberg 30 Public List -- open to all" <public-list at alberg30.org>
Sent: Wednesday, April 20, 2005 8:52 AM
Subject: Re: [Public-list] Fw: Shackles for New Mast Top


> Good morning fellows -
>
> It sounds like you guys are thinking carefully about the project, but I
> should suggest that use of shackles in standing rigging is not considered
> prudent.  Are you talking about toggles?
>
> Gord #426 Suprise
>
>
>
>
>
>
> > Stephen,
> > I've gotten personally involved in modifying the shackles to fit the new
Mast
> > Top for Christos and Alfredo (close, local friends), since I work with
and
> > have access to appropriate tools. Chris suggested that I post my
modifications
> > for others benefit.
> > As all involved know, the suggested shackles don't fit between the outer
> > plates on the new fitting. I modified the new shackles using a 4 1/2"
> > mini-grinder, a cutting disk (very thin) and a grinding disk.
> > First, I used the cutting disk to slice a thin sliver off one side of
the
> > shackle (about 1/8" between the disk's thickness and the sliver). This
alone
> > allows the shackle to fit between the plates.
> > Next problem was fitting the pin. The slot in the shackle is not deep
enough
> > to fit the pin. Using the 1/4" thick grinding disk's edge, I started
> > lengthening the slot. It didn't take too much to get the pin to fit, but
the
> > angle that the shackle was at was no where near correct for either of
the
> > stays. I started this with a 4 1/2" disk which was almost at it's
maximum
> > reach. I switched to a 6" X 1/4" grinding disk and continued on the
slot.
> > After several grind and check cycles, i found that by lengthening the
slot all
> > the way to the top of the Schafer Logo, the shackle fit and pivotted
enough
> > for either the forestay or backstay to have a straight lead. Of course,
it has
> > been a few years since I have been up close and personal with an Alberg
30
> > Mast top with tight shrouds, so I might have gone a little too far.
> > Considering the importance of a fair lead (especially on the forestay),
I
> > think not.
> > Disclaimer..... I am not a design engineer and accept no responsibility
for
> > any work or design changes done by "others". I am also notirying my
freinds
> > that I did the work for that I accept no responsibility for the changes
made
> > to the parts (shackles). If they or others use the parts I modified or
the
> > methods, measurements proposed above, it is at their own risk.
> > Regards,
> > Brian    ex#497
> > ----- Original Message -----
> > From: Christos Katehis
> > To: Brian and Elaine Timmins
> > Sent: Tuesday, April 19, 2005 8:47 PM
> > Subject: Re: Shackles
> >
> >
> > I was thinking about that too (the slot), I wasn't sure if that had to
be
> > modified as well. Perhaps you should post your process on the list so
the
> > others can do the same. All in all it's a booboo on the designers side.
> >
> >
> >
> > If it passes Brians test, it's fine with me
> >
> >
> >
> > Thanks,
> >
> > Chris
> >
> >
> > -------------- Original message from Brian and Elaine Timmins
> > <timmins at optonline.net>: --------------
> >
> >
> > No, not with the right tools. Besides cutting down one side to make it
fit
> > into the mast top plates, I had to cut the slot longer to allow them to
take
> > reasonable angles to match the shrouds. They should be fine now. I want
you to
> > see (take) them well before you need them, just in case.
> > BT
> >   ----- Original Message -----
> >   From: Christos Katehis
> >   To: Brian and Elaine Timmins
> >   Sent: Tuesday, April 19, 2005 4:06 PM
> >   Subject: Re: Shackles
> >
> >
> >   Thanks Brian;
> >
> >
> >
> >   I will probably need them in two weeks, so in your trunk is a good
idea. Was
> > it tought work?
> >
> >
> >
> >   Chris
> >
> >
> >
> >
> >
> >
> >     -------------- Original message from Brian and Elaine Timmins
> > <timmins at optonline.net>: --------------
> >
> >
> >     Shackles and mast top are ready. I'll keep them in my trunk.
> >     BT
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>
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