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I count 8 to 1 with the cascading system. What am I missing?

This was all covered in another thread. (http://www.catsailor.com/forums/showflat.php?Cat=0&Number=85080&an=0&page=1#Post85080)

1# of tension on the main sheet gives 2# on the secondary line, for a total of 9# between the traveller and boom.

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I do not think that the sheet coming out of the boom to the bottom block adds any purchase as there will be no more line comimg out of the bottom block than pulls on the doubler block inside the boom.

Pull 9" of line and the boom moves 1" and 8" of line comes out the end of the boom. More line does come out the bottom block than pulls on the doubler.

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I hope your boom is stronger than mine, small Tiger round boom, as it looks like too much of a compression load. If you are putting that much in compression it will be ready for any side force to bend or break.

Yeah, the system would not even fit in the round Tiger boom (and possibly not in the earlier rectangular one).

I have a Sailcraft Tornado boom that measures 1.25"x3.5", and Tornado booms are regularly used to house cascade systems. You can even buy them from Marstrom with much pricier internal cascades.

Thanks for the feedback,
--Glenn