RRD Spinner Pro Front Wing Y31 780 hydrofoil front wing: 780 cm², 700 mm span, aspect ratio 6.30, 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 |
|---|---|---|---|---|---|---|---|
| Axis | Spitfire Spitfire 720 | 815 | +4.5% | 6.47 | +2.7% | 720 | C2 Mid-low aspect |
| Family | SPINNER PRO |
|---|---|
| Size | 780 |
| Area, cm² | 780 |
| Area basis | unknown |
| Span, mm | 700 |
| Chord, mm | — |
| Aspect ratio | 6.30 |
| Band | C2 Mid-low aspect |
| Brand files it under | All-round / freeride |
| Disciplines | wing, prone |
| Construction | 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.