Armstrong S1 (Step 1) 1850
- 1,850area, cm²
- 965span, mm
- 5.00aspect 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 with a traced outline, the Slingshot One-Lock Ease 1850 (#4), 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 965 mm span is 26% narrower than typical for the area — the median across the 61 current wings within 10% of its size is 1,300 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 |
|---|---|---|---|---|---|---|---|
| North | Sonar MA1850v2 | 1,850 | +0.0% | 5.00 | +0.0% | 960 | Low aspect |
| F-One | GRAVITY FCT 1800 | 1,800 | -2.7% | 5.00 | +0.0% | 950 | Low aspect |
| F-One | GRAVITY Carbon 1800 | 1,800 | -2.7% | 4.60 | -8.0% | 900 | Low aspect |
| Slingshot | One-Lock Ease 1850 | 1,850 | +0.0% | 5.40 | +8.0% | 990 | Low aspect |
Specifications
| Family | S1 |
|---|---|
| Size | S1 1850 |
| Area, cm² | 1,850 |
| Area basis | unknown |
| Span, mm | 965 |
| Chord, mm | — |
| Aspect ratio | 5.00 |
| Band | Low aspect |
| Brand’s category | Entry |
| Disciplines | wing, prone |
| Construction | carbon |
| Model year | 2025-2026 |
| 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.
Data current to August 2026. Every figure above is the manufacturer's published claim, converted to comparable units.