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Fri, April 26 2024, 00:20 [ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, 3, 4, [5], 6, 7, 8, 9 ]

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Date Posted: - Thursday - 10/15/09 - 6:54pm
Author: Randall
Subject: Interesting...
In reply to: Randall, Murre, M31 's message, "Welcome to the Club!" on - Tuesday - 10/13/09 - 8:39pm

Hey Bruce, I was wondering how your new mast turned out. Thanks for sharing. It was sure a beauty on horses.

I tend to think you are right on both counts.

Some of the bend is an illusion in that the mast (at least my mast) has taper, but the taper is all in the leading edge, which creates the impression of aft bend when viewed from the mast's base.

Beyond that, though, I still have real bend, and try as I did, and even after giving the masts so much rake that Murre began to look like a bugeye ketch, I couldn't get all the bend out. More importantly, I couldn't get the spreaders to even up--they still had significant aft sweep, even with way more rake than I'd ever run with.

So I'm beginning to think that the M31 spec drawing on the MOA site (where the masts are straight and the spreaders at right angles) aren't what got built, and that the bend and spreader sweep was intentional (weird, but intentional).

More as it develops...

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[> [> [> Optical -- Bruce (Gitana Vela, M31 #95), - Thursday - 10/15/09 - 7:25pm

Yes, I remember Brion Toss mentioning is his last talk at Spaulding Wooden Boat Center, "when you step the masts, rake the mizzen back further than you would normally think is necessary because when you look at both masts from a distance, the perspective will make them seem parallel. Otherwise, they will look like they point together slightly" Anyway, My old main mast definately also had an aftward bend as well, so I figure thats how it is supposed to be.


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