Hi Peter,
Yeah the whip effect of mast in high wind and wave. Could it be
self perpetuated to self destruction?
--- In harryproa@yahoogrou
<peter.southwood@
>
> Hi Todd,
> Is there any reason why it should be worse than a stayed mast in
these circumstances?
> I think the worst would be a stayed mast with some slack in the
rigging which would rally bang around producing shock loads. An
ubstayed mast should have less windage, lower centre of gravity and
a bit of flexibility to reduce the jerk loads. There might be a
slight whiplash, but I dont think it will be too bad unless the
bearings are loose.
> Has anyone done a load analysis of the alternatives?
> Cheers,
> Peter
> ----- Original Message -----
> From: Todd
> To: harryproa@yahoogrou
> Sent: Friday, August 10, 2007 7:36 PM
> Subject: [harryproa] Re: Rare Bird Sailing
>
>
> I like the idea of the unstayed mast. I just think of it a giant
> windsurf mast. Mast could be made for specific design
> characteristics. You could have whole line, race ,cruise, and
> weekend worrior ;) Either way the bend of mast and twist of sail
> would seem forgiving and more efficient on a "vertical" rig.
>
> I only wonder what it will do under bare pole gale force wind in
> 8metre seas? Thats a general question what would any boat mast
that
> I might buy do under such circumstance.
>
> Todd
>
> --- In harryproa@yahoogrou
> wrote:
> >
> > Mast Bend
> > A stay from mast head / top of jib to the windward hull may
help,
> > without unduly compromising the weather-cocking abilty of the
rig.
> >
> > The mast would still be designed for full load without, the
stay
> (s)
> > would just to reduce the bounce.
> >
> > What do you think?
> >
> > Mark
> >
> > (I have a Hirondelle cat, boy do I hate those nasty stays, not
> > allowing me to spill wind. It like driving with an acelerator
> stuck on
> > 3/4 throttle, don't thik car drivers would accept that one,
why do
> > sailors!)
> >
>
>
>
>
>
>
> ------------
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>
>
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2007/08/09 02:44 PM
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