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Old 06-06-2011
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Designing block and tackle systems

Hi All -

I am trying to design a cascading tackle to use as a backstay adjuster. I have a single backstay, and don't want to create a 2nd attachment point on the stern as many systems I've seen do.

In my mind, there's no basic difference between 'sheeting in' my backstay and sheeting in my main, except needing alot more purchase.

I figure I need somewhere around 22:1.

My understanding of these systems is pretty rudimentary, and I did quite a bit of googling around and couldn't find a basic explanation of cascading setups, or prepackaged mainsheet sheeting systems. I also looked at the sailnet article section.

Can anyone point my in the right direction?

Thanks
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