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Wed, February 05 2025, 04:55 [ 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: - Sunday - 07/19/09 - 10:50pm
Author: Al LaChance and Hexli
Subject: M 31 tuning the rig
In reply to: Lyle Harris 's message, "M31 tuning the rigging" on - Tuesday - 07/ 7/09 - 3:45pm

Alright, along the same line of conversation, it would appear that my mail has a bit of "bend". I am trying to make the rig correct and currently the roller furling halyard is laying on the spreader "brackets" and I am seriously afraid of chafe.
I had the boat Pro rigged and I am sot so sure it is "right". is there a way to take the bend out, at least some of it? It would appear that my mast is pre-bent in that when it was down the bend did not come out. I have already replaced the deck and the step that supports the main mast and all appears to be sound.
Do we or should we come up with a way to tune our rigs and print it. I am not the one to do that, I bow to the knowing ones among us.
Speak to me and set me right!

Al

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Replies:

[> [> mast curvature -- Lyle Harris, - Tuesday - 07/21/09 - 11:42am

Hi Al,
Which direction is the curve/bend in your mast?
I'm trying to picture how the roller furling halyard comes into contact with the spreader brackets. I still have old hank-on foresails. Does this halyard pass through the "triangle" between the mast/spreader/top-shroud?
If you're referring to the curvature of the mast toward the stern of the boat, this is built into the design, and should be a subtle amount of curve on on side of the mast. More of a taper, actually.


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[> [> [> It bends aft...mine too -- Randall, Murre, M31, - Tuesday - 07/21/09 - 2:03pm

If you'll look through owner photos on the MOA site, you'll notice that the bend in the main is fairly common, though I can't tell why. The original drawings suggest it wasn't designed that way.

All the fore and aft ***taper*** in the mast is on the fore side, so maybe this creates an ocular effect that encourages us to work in a bend over the years. Or maybe it was a fashion statement by a cadre of J-boat enthralled riggers. I've always thought the aft bend on Murre was due to a head sail roller rig that was cut too big. Who knows?

You can work most of the bend out, assuming you have enough of a run on your fore and backstay turnbuckles. But even with most of it out of Murre's main, the taper in the mast means the jib halyard still rests on the fore end of the spreader hardware. I have a rope to wire halyard on the jib that is bar taught; it's the wire that rests against the spreader tang, and it doesn't move, so I've not worried much about it.

If you've got all rope, you might stitch a bit of leather onto the chafing part of the halyard.

Good Luck,

RR


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