Armstrong S1 (Step 1) 2450
- 2,450area, cm²
- 1,054span, mm
- 4.80aspect ratio
- Lowaspect · AR ≤ 6.0
Family S1 Brand’s category Entry Disciplines wing, prone carbon · 2025-2026
The closest current wings from other brands — every one within ±5% of area and ±8% of aspect ratio, ranked closest first. The closest, the Duotone Lift 2400, is already drawn over it. Select a numbered wing to draw it — up to three at a time.
The S1 runs 4 sizes, 1,250–2,450 cm²; aspect ratio moves 4.8–5.7 across the range.
Its 1,054 mm span is 35% narrower than typical for the area — the median across the 15 current wings within 10% of its size is 1,610 mm.
Closest wings from other brands
Projected and flat area run 3–8% apart. A marked area is one whose brand does not state which it publishes, so a comparison inside the area tolerance may be comparing unlike figures.
| Brand | Wing | Area cm² | Δ area | Aspect ratio | Δ AR | Span mm | Band |
|---|---|---|---|---|---|---|---|
| Duotone | Lift 2400 | 2,400 | -2.0% | 5.10 | +6.2% | 1,110 | Low aspect |
| North | Sonar MA2400v2 Prime | 2,400 | -2.0% | 4.50 | -6.2% | 1,040 | Low aspect |
| Sabfoil | Sea Devil 1040 | 2,445 | -0.2% | 4.42 | -7.9% | 1,040 | Low aspect |
Specifications
| Family | S1 |
|---|---|
| Size | S1 2450 |
| Area, cm² | 2,450 |
| Area basis | unknown |
| Span, mm | 1,054 |
| Chord, mm | — |
| Aspect ratio | 4.80 |
| Band | Low aspect |
| Brand’s category | Entry |
| Disciplines | wing, prone |
| Construction | carbon |
| Model year | 2025-2026 |
| Source | manufacturer |
The brand publishes this aspect ratio, but its own span and area (span² ÷ area) give a figure 5–10% away. The published number is kept and marked.
Data current to August 2026. Every figure above is the manufacturer's published claim, converted to comparable units.