[MHml] Cat vs. Tri
Rob Denney
proa at iinet.net.au
Sat Nov 4 02:28:58 EST 2006
G'day,
So, define an open rule for us.
regards,
Rob
----- Original Message -----
From: "Capt. Len" <trikini23 at trikini.com>
To: "Informed discussion of multihull issues" <multihulls at steamradio.com>
Sent: Friday, November 03, 2006 9:55 PM
Subject: Re: [MHml] Cat vs. Tri
> See what I said. To many special interest people putting forward to
> ever permit a true open rule.
>
> If was really open, then I think you would get answers to all these
> special interests not limit it by defining one area.
>
> Even sail area is a tough one, with wing masts, wing sails ( soft and
> hard) and kites all defining area differently.
>
> And we haven't even touched on courses yet .
>
> Was so nice back in 1960's when no one knew anything and we were open to
> anything.
>
> len
>
>
> Rob Denney wrote:
>
> > G'day,
> >
> > Interesting, but it forces a sloop rig which may type form the boat.
> > For example, an unstayed mast with no jib does not need a forestay,
> > nor the extra beefing up that the entire hull needs to take that
> > forestay. Also, on a proa, sheeting a jib is a tad tricky (no deck to
> > leeward) unless you use a ballestron boom, which is good, but not
> > ideal for a race oriented boat.
> >
> > Plus, I would like to know a lot more about rig optimisation than is
> > currently evident. Is it just sail area/righting moment
> > considerations, or is one definitely superior. What is the ideal
> > aspect ratio and plan form if righting moment is allowed to be very
large?
> >
> > regards,
> >
> > Rob
> >
> >
> >
> > ----- Original Message -----
> > *From:* Jesse Deupree <mailto:jdeupree at maine.rr.com>
> > *To:* Informed discussion of multihull issues
> > <mailto:multihulls at steamradio.com>
> > *Sent:* Friday, November 03, 2006 7:46 PM
> > *Subject:* Re: [MHml] Cat vs. Tri
> >
> >
> > On Nov 3, 2006, at 12:01 AM, Rob Denney wrote:
> >
> >> G'day,
> >>
> >> The J24 rig would be a challenge due to the stays, although not
> >> an insurmountable one, and if that was the rule, I would
> >> certainly design and build a boat to race under it. However, I
> >> (as both a proa fan and an interested person) would prefer the
> >> rule to stipulate just the sail area, including spars. This
> >> would help answer the sloop vs una rig question as well as the
> >> hull size and shape questions. Perhaps a maximum of 20% of the
> >> total to be the spars to keep it relevant, cheap and easy to
> >> handle.
> >
> >
> > Fair enough- rule is modified to just require sails fit inside
> > triangles made by class rule forestay and backstay, and certainly
> > shunting would be fair. This particular rule is designed to test
> > boat design, hence the one-design rig and sails. A Rule that just
> > said xxx sq. feet of sail tests sail design and boat design
> >
> > The idea of a J24 rig is just to pick something easy and obvious
> > and possibly cheap. The idea of a $5,000 claim is to keep someone
> > from trying too hard (show up and win with something too fancy
> > costing $20,000 and someone will buy it. Show up with a winner
> > that cost you less than $5,000 and someone might buy it- your
choice.)
> >
> > Jesse Deupree
> > F-27 ION
> > Portland Maine
> >
>
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> --
> Live Long and Prosper
> Capt. Len Susman, retired
> trikini23 at trikini.com
> What's New
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>
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