Subject: [harryproa] Re: Aerodynamics and sailing performance
From: "brag_rotor" <>
Date: 2/25/2007, 6:15 AM

Hi Doug,

It bundles up in a civilised fashion the luff just concertinas - with
reef points you can make it all neat and tidy, but the only critical
attachment is at the clew, where we use a light line to haul it all
together for the mainsheet changeover. There's a second 'snap
shackle' on the mainsheet for that purpose. We make those out of rope
and save 32 a time.....

Photo of a reefed Wharram schooner here:-

Packing the sail into its cover can be fun if you are single handed,
but I can do it OK. Just wrap the sail around the gaff as
best you can, apply the gaskets or bunjees, and heave the cover on,
being careful not to make the sail too lumpy to fit.

This looks a very neat setup:-

But I suspect his sail material is half the weight of ours, and a lot
more malleable. Heavy duty HydraNet is a beast to furl, but we went
for its toughness and total lack of stretch. This means that we do
not worry about stretching the sails out of shape due to reefing, and
they didn't - even in a Biscay gale. Boilerplate sails.

Only bagging the sail single handed is any sort of tussle, anyway.
That's partly because the bag has to be tight to avoid flutter. Our
sail has lived in its bag since .... ummm .... 1999 I think. Just
hose it down and do some sewing on the odd seam once or twice a year.

Here's another neat one, without a sail cover:-

Gives you a chance to see how it's been furled. They are no hassle,
in our experience.

A bit off topic, one of Steve Turner's clients wanted a Tiki without
the 'old fashioned' rig, and had Steve build him one of his GRP boats
with a full-on 25% oversize battened bermudan rig, no expense spared,
so Steve and the gang then had a chance to sail it against a standard
production boat.

Interestingly the standard boat had the advantage everywhere, except
downwind - 25% more sail area made a difference there. So one might be
tempted to assume that the Wharram Tiki Wingsail had around 25% more
drive to windward/on a reach than the fully battened bermudan...?

Reason that I mention this is that I found a photo of what may be that
boat when I was looking for furled/reefed sails....
Might be a different boat, who knows. Not an improvement in our

All the best, Ben

--- In, Doug Haines <doha720@...> wrote:
> HI,
> How does the sail fold up at the sleeve when you reef or take the
sail down?
> Doug

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