Subject: [harryproa] Re: Hinging masts
From: "Robert" <>
Date: 11/26/2006, 11:49 PM

Should be possible. Have to offset the masts slightly so they don't
interfere with each other as they lean towards the centre of the lw
hull.For going under bridges, you wouldn't have to remove the masts
but simply leave them tilted,
RObert --- In, Dave Howorth
<Dave.Howorth@...> wrote:
> On Fri, 2006-11-24 at 04:27 +0000, Robert wrote:
> > -What I thought about earlier is to have a hinged sleeve. Lift
> > mast till it is out of the hull but still in the sleeve and then
> > can lay it flat with control,
> > Robert
> If it can be managed, perhaps it would be simpler to hinge the mast
> itself. I.e. the mast is supported by a tube between deck and keel,
> this tube has a hinge at deck level.
> When upright, the tube can be supported on three sides (windward,
> leeward and a bow) by permanent structure bonded into the hull. The
> fourth side can be supported by a wedge dropped into place after the
> mast is swung upright, with the wedge itself supported by further
> permanent structure.
> Then there's no need to lift the mast vertically at all, and no
need to
> align a 'sleeve' and a 'tube' when inserting the mast. Dropping the
> goes as follows:
> (1) Pull halyard out to bow on same side as wedge, and secure to
> mast.
> (2) Lift out wedge.
> (3) Slacken halyard and rotate mast until it is level (or nearly
> (4) Pull mast out of tube.
> Raising is the reverse.
> Cheers, Dave

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