Sounds like that's what I should try next time: make the loop bigger and raise
the knot above the spreaders but have the tie down line on the gooseneck to
hold the loop just below the spreaders.
Using the spreader brackets has always worked (all three times in/out) but I've
always wondered about it.
And like another lister mentioned, better to do it right even though it may
work.
Thanks
Ron
Wild Cheri
C&C 30
STL
________________________________
From: Marek Dziedzic <dziedzi...@hotmail.com>
To: cnc-list@cnc-list.com
Sent: Thursday, January 9, 2014 12:52 PM
Subject: Re: Stus-List Mast unstepping
Ron,
I would venture to say that if you use the
hold down line (tied to the gooseneck) you move your attachment point ever so
slightly down. When you tie the loop under the spreaders, your attachment point
is above spreaders (the loop is most likely longer than the circumference of
the
mast). When you tie it down to the gooseneck, you probably pull it down a bit.
usually the centre of gravity of the mast is around the spreaders, so moving it
even 10-20 cm up or down can throw the balance off.
If you use the tie down line (I do, I have a
double spreader mast), that line is there to make sure that the loop won’t move
up the mast and it should take the weight of the mast only when the mast is
vertical.
If properly tied, that tie down line, should
not make any difference to the overall balance of the mast.
If you find that the mast is unbalanced (top
heavy; any other minor imbalance is not such a big issue), you may consider
tying the loop above the spreaders (and holding it down with a tie down line to
the gooseneck).
I hope, I make sense
Marek
------------------------------
Message:
2
Date: Thu, 9 Jan 2014 09:06:29 -0800 (PST)
From: "Ronald B. Frerker"
<rbfrer...@yahoo.com>
To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com>
Subject: Re: Stus-List Mast
unstepping
Message-ID: <1389287189.782.yahoomail...@web122905.mail.ne1.yahoo.com>
Content-Type: text/plain;
charset="iso-8859-1"
I had some difficulty using the hold down line
method. ?I had the loop just under the spreaders and the line tied down at the
gooseneck. ?Mast was unbalanced and coming out at an angle.
If the load is
transferred to the gooseneck (or some other lower spot) by the hold down line,
won't that also transfer the "pick point" to that location as well?
Doesn't
the loop just become the rotation point? ?That would explain my dilemma with
the
balance when I tried that method. ?If not, what would explain my balance
problem?
Ron
Wild Cheri
C&C
30
STL
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