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There are two ratios that are usually come up with trebuchets: beam (leverage) and mass (missile to counterweight) ratios. The classic beam ratio for a FAT is 2:1. For trebuchets in general a mass ratio of between 80:1 to 160:1 can be used. You can go lower, but performance will suffer, and over around 120:1 you run into diminishing returns.

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15y ago

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