Rig Measurement

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Trev
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Rig Measurement

Post by Trev » Sat Jan 31, 2015 10:41 pm

Hi can anyone help please , what is the approx measurement of bow to mast and bow to front of dagger board of new rig boats.

Cheers Trev.

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Shu
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Re: Rig Measurement

Post by Shu » Wed Feb 04, 2015 1:02 am

Trev,
Like almost everything on these boats the answer is, it varies. It is highly dependent on how far aft the mast base is from the bow. A lot of the latest boats, B5, B6, K3, etc. have the mast base exactly half way aft, or 7 feet from the stem. In these boats, the more or less standard rake, as measured from the aft side of the top band to the bottom edge of the transom is 8100 mm. Light air rake may be 8150, and heavy air rake may be as low as 8000.

But that critical distance from the stem to the mast varies alot. B2's, B3's etc, are different from B5's and each other. Some B3s are different than others.

Let us know what boat you have and give us the horizontal distance from the stem to the mast centerline, and I'm sure someone here will have the right base rake settings for you.

-Steve
Steve Shumaker
USA 1183

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Shu
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Re: Rig Measurement

Post by Shu » Wed Feb 04, 2015 1:10 am

Sorry Trev, I misread your question. As for the base of the mast to the leading edge of the centerboard, newer boats have about 8 to 9 inches. As for the bow to the base of the mast see my previous post. B2's have about 70 to 72 inches, B-3's somewhere between that and B5's. all of these are "new rig" boats.
Steve Shumaker
USA 1183

Trev
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Re: Rig Measurement

Post by Trev » Wed Feb 04, 2015 10:41 pm

Cheers for that , front edge of center board at 86" think i leave it there move mast back for new rules rig. Re-fit boat with fittings of wrecked boat ( see post new hull wanted).
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Shu
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Re: Rig Measurement

Post by Shu » Thu Feb 05, 2015 12:41 am

Be careful about moving the mast position. The structure of your boat is likely designed to support the mast compression and shroud tension loads for the current position of the mast step. Things might get pretty flexy if you move the mast and shrouds without addressing the structure.
Steve Shumaker
USA 1183

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