- What aspect ratio actually tells youAspect ratio is the one foil number that means the same thing at every brand. Here is what it does and does not predict.
- One planform, half the industryFoil brands publish sizes in incompatible units, so nobody can see when they are selling the same wing. Tabulated: the most-duplicated planform in the dataset, and what the specs cannot settle.
Updated 2026-08-11