RRD Thunder Front Wing Y30 750 hydrofoil front wing: 750 cm², 750 mm span, aspect ratio 7.50, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from RRD'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 |
|---|---|---|---|---|---|---|---|
| F-One | SK8 HM Carbon (T2) SK8 HM CARBON 750 | 750 | +0.0% | 8.00 | +6.7% | 775 | C2 Mid-low aspect |
| Unifoil | Aggression 115 Aggression 115 | 741 | -1.2% | 8.00 | +6.7% | 760 | C2 Mid-low aspect |
| Cabrinha | Whippit 750 | 750 | +0.0% | 8.10 | +8.0% | 780 | C2 Mid-low aspect |
| Lift Foils | 121 Havoc Front Wing 121 | 774 | +3.2% | 7.00 | -6.7% | 737 | C2 Mid-low aspect |
| Family | THUNDER |
|---|---|
| Size | 750 |
| Area, cm² | 750 |
| Area basis | unknown |
| Span, mm | 750 |
| Chord, mm | — |
| Aspect ratio | 7.50 |
| Band | C2 Mid-low aspect |
| Brand files it under | Surf / carve |
| Disciplines | wing, prone |
| Construction | Full Carbon |
| Model year | — |
| 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 RRD 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.