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 A site to calculate sail loads to size blocks?		  New Topic  Topic Locked
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delliottg
Former Mainsheet C250 Tech Editor

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USA
4479 Posts
Initially Posted - 08/18/2011 :  22:03:30  Show Profile  Visit delliottg's Homepage
A friend of mine owns a 43' Polaris who's looking to update the running rigging & hardware. He's looking for a site that'll let him calculate loads based on sail size & wind speed for his cutter rig. He's attracted to the newer, stronger lines that are now available, as well as the new high strength composite blocks & such. He just wants to be able to size them properly. He says he's just about Googled & Binged himself out of key words searching.

Anyone run across such a site?
David
C-250 Mainsheet Editor


Sirius Lepak
1997 C-250 WK TR #271 --Seattle area Port Captain --
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JohnP
Master Marine Consultant

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1520 Posts
Response Posted - 08/19/2011 :  09:12:56  Show Profile
Harken has useful info on [url="http://www.harken.com/blocks/blocks.php"]blocks[/url]. No surpirse there!

[url="http://www.harken.com/charts/blockloadvangle.php"]Load advantage[/url]

[url="http://www.harken.com/charts/rigdimensions.php"]Rig dimensions[/url]

[url="http://www.harken.com/pdf/Rigging-Breaking-Strengths-lr.pdf"]Breaking strength[/url]

[url="http://www.harken.com/charts/MRusechart.php"]Mid-range blocks[/url]

[url="http://www.harken.com/charts/genoasysloading.php"]Genoa loading[/url]

[url="http://harken.com/calculators/GenoaLoading.aspx
"]Load calculator[/url]
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delliottg
Former Mainsheet C250 Tech Editor

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USA
4479 Posts
Response Posted - 08/20/2011 :  06:23:52  Show Profile  Visit delliottg's Homepage
Thanks John, that looks like it might do what he needs.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.