Subject: Re: [harryproa] Elementarry and the Marples Diamond Rig
From: Rob Denney
Date: 2/7/2012, 5:56 AM
To: harryproa@yahoogroups.com.au
Reply-to:
harryproa@yahoogroups.com.au

 

Great to have a play with.  My concerns are that a) triangular tips are pretty useless, b) the leading edges are not rigid enough so will sag, and c) the draft will be pushed aft.  Maybe.  Give it a go and let us know how it works.  Should be easy enough to step it in the same hole as a conventional rig, so no big deal to swap if it doesn't work as well as you would like.  


How big a boat do you want?  A flat panel elementarry is quite capable of beating the Nacras if the rig is big enough.  If the diamond rig does not perform well enough, then the schooner rig we originally used on the boat will be pretty quick, if you have a crew.  Hard work solo, when a taller una rig would be the answer.  Next step up is the Wooden Boat Design Challenge boat which is a fair bit longer, but would be a lot quicker.  

I would build it the same way you want to build the big boat.  Maybe put the same rig on it as well to learn how it works.  Beat the nacras and resale might be better than you expect.

Any questions, let me know.
regards,

rob

On Tue, Feb 7, 2012 at 11:28 AM, sfbaysailingdad <mitch.sailing@gmail.com> wrote:
 

Hi Rob,

I might be willing to give this a go - I'm selling my Contour 34 tri with the likelihood of getting something quite big, and in the interim would like to try to give some of the hot local catamarans some fits.

Brief would be in the bay point to point racing, not much windward/leeward stuff.

Thoughts? John Marples is local, so assuming I can get to the platform stage, he'd likely willing to test out his new sail plan.

I do assume little in resale - so this would have to be an inexpensive build. I wouldn't mind stressed ply, or foam/glass. No need for carbon, unless maybe the beams…

Greg


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