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Date Posted: - Monday - 04/ 4/11 - 8:45am
Author: Paul M31 #106 NJ
Subject: research
In reply to: Paul M31 #106 NJ 's message, "Mizzen uppers/lowers" on - Tuesday - 03/22/11 - 8:10pm

Done some research and it turns out I need to swap the uppers and lowers for the mizzen so that the upper sits (like most of you have) parallel to the mast and the lower on the next chainplate aft (the middle one) - the split main backstay stays on the most aft chainplate.

This should also resolve my shroud "touching" issue - as you can see in this picture, there is contact.

Photobucket

With the corrected situation, however, there will be more need to use the running backstay - especially when I fly the mizzen staysail.

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Replies:

[> Mizzen Chainplate Position -- Kathy Campbell Shadow M32#3, - Monday - 04/ 4/11 - 12:54pm

Paul,
I've been meaning to ask you about the mizzen mast position and where to attach the shrouds. When you had your mast positioned with the uppers attached to the middle chainplate did you check to see how much rake the mast had? I read an article by Brian Toss that talked about putting enough rake in the mizzen mast. When Shadows mizzen was up I measured about 9" rake with a plumb bob. That was with the mizzen upper attached to the forward chainplate. Shadow seemed to balance well. How did your Mariner balance with the upper shrould on the middle chainplate?
The pictures are nice.
Kathy

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[> [> Mizzen Rake -- paul M31 #106 NJ, - Monday - 04/ 4/11 - 4:49pm

As you can see in the picture, the rake of both the Main and the Mizzen is minimal... I would say perhaps 3 inches on the boom using a plumb bob - I also don't think moving the stays to their proper position will change the rake by much.

When I step the masts this year, I will see if I can induce a bit more rake - I like it to be arounf 6-7 inch on the main and around 5 or so on mizzen - too much and I am afraid to produce too much weatherhelm.

Last year the balance of the boat was minimal wetaherhelm - I'd like to see a tad more for safety.

Photobucket

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