Block selection help please - Page 2 - SailNet Community
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post #11 of 11 Old 05-27-2009
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Basically, aside from what TOmmays said about how much line is involved, the more blocks a line goes through, the more friction it experiences. Having four sheaves in a typical 4:1 setup creates less friction than the six sheaves in a typical 6:1 setup. The better the sheaves, the less friction they create.

For dynamically loaded lines, like a main sheet, you generally want roller or ball bearings, which are good at reducing friction, but aren't very good under static high loads. For a halyard, which is primarily a statically loaded line that isn't often adjusted, you usually want sleeve bearing blocks, since the sleeve bearings are generally less likely to deform under a high static load.


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