Join Date: Mar 2006
Location: New England
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You probably don't need a hexaratchet block set from harken. One major reason the Harken blocks are better is that they are ball-bearing based, rather than sleeve bearing based, as the Lewmars are. The ball-bearing blocks are better for dynamic loads, the sleeve bearing blocks are better for static loads.
The blocks I'd recommend for you are not the Lewmar 72mm, but the Harken AirCarbo 57mm. They've got basically the same working load, basically the same as the Lewmar 72 mm (2380 SWL vs. 2420 SWL for the Lewmars). However, the cam cleat on the Carbo is a bit weaker than the Lewmar cam—a SWL of 1800 lbs vs the 2420 on the Lewmar cam. They're only a little bit more money... $260 vs. $219 for the lewmars, but significantly less than the medium boat blocks.
I'd point out that I use the same blocks on my boat, and my mainsail is 242 sq. ft. and the boat doesn't heel as much, so the forces on the main are greater than you'll have.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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Last edited by sailingdog; 03-16-2010 at 10:50 PM.