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The local rigger has said that the spreaders should be tiltled up slightly. My mizzen mast is like that, and other boats seem to have a small upwards tilt to their main spreaders. Does anyone know whether this is good advice? Mine are currently level. They may have moved or they may have been badly set up, if that is the case.
The spreader should bisect the angle of the shrouds, so yes, they should point upwards slightly.
The reason is that the spreader should be in compression only with no bending forces.
If you think about dropping the spreader some more you will clearly see that there is a bending force being applied to the spreader. (when they are level the idea of them being ‘neat & tidy’ hides the bending from our brains
I found this page for more info https://goodoldboat.com/spreader-angles/
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