Duotone Free 1500 hydrofoil front wing: 1,500 cm², 950 mm span, aspect ratio 6.00, 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 |
|---|---|---|---|---|---|---|---|
| ENSIS | PACER Front Wing 1550 | 1,550 | +3.3% | 6.00 | +0.0% | 964 | C1 Low aspect |
| RRD | Blaze LTE Front Wing Y30 1550 | 1,550 | +3.3% | 6.00 | +0.0% | 975 | C1 Low aspect |
| F-One | PHANTOM Carbon PHANTOM 1480 | 1,480 | -1.3% | 6.20 | +3.3% | 960 | C2 Mid-low aspect |
| North | Sonar MA1500v2 MA1500v2 | 1,500 | +0.0% | 5.60 | -6.7% | 920 | C1 Low aspect |
| Takuma | Kujira Helium Front Wing Kujira Helium 1500 | 1,500 | +0.0% | 5.52 | -8.0% | 910 | C1 Low aspect |
| KT Foiling | Instinct 1450 Instinct 1450 | 1,450 | -3.3% | 6.33 | +5.5% | 960 | C2 Mid-low aspect |
| Axis | BSC (Broad Spectrum Carve) BSC 970 | 1,572 | +4.8% | 6.27 | +4.5% | 970 | C2 Mid-low aspect |
| Family | Free |
|---|---|
| Size | 1500 |
| Area, cm² | 1,500 |
| Area basis | unknown |
| Span, mm | 950 |
| Chord, mm | — |
| Aspect ratio | 6.00 |
| Band | C1 Low aspect |
| Brand files it under | All-round / freeride |
| 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.