Duotone Lift 2400 hydrofoil front wing: 2,400 cm², 1,110 mm span, aspect ratio 5.10, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from Duotone's own published specifications.
Projected and flat area run 3–8% apart. A marked area is one whose brand does not state which it publishes, so a match inside the area tolerance may be comparing unlike figures.
| Brand | Wing | Area cm² | Δ area | Aspect ratio | Δ AR | Span mm | Band |
|---|---|---|---|---|---|---|---|
| Armstrong | S1 (Step 1) S1 2450 | 2,450 | +2.1% | 4.80 | -5.9% | 1,054 | C1 Low aspect |
| Family | Lift |
|---|---|
| Size | 2400 |
| Area, cm² | 2,400 |
| Area basis | unknown |
| Span, mm | 1,110 |
| Chord, mm | — |
| Aspect ratio | 5.10 |
| Band | C1 Low aspect |
| Brand files it under | Entry |
| Disciplines | wing |
| Construction | glass |
| Model year | 2025 |
| Source | manufacturer |
The brand's published aspect ratio agrees with its own span and area (span² ÷ area) to within 5%, so the figure is confirmed.
See Duotone on the plot →Data current to August 2026. Fast Bobby is the researcher, never the reviewer: every figure above is the manufacturer's published claim, converted to comparable units, and nothing here is a riding impression.