Subject: Re: [harryproa] Re: Rare Bird Sailing
From: "Peter Southwood" <>
Date: 8/10/2007, 1:48 PM

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?
----- Original Message -----
From: Todd
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.


--- In, "proajunk" <laburnumho@...>
> 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
> 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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