F-One JAM HM Carbon JAM 1400 hydrofoil front wing: 1,400 cm², 1,200 mm span, aspect ratio 10.30, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from F-One'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 |
|---|---|---|---|---|---|---|---|
| Naish | Excalibur HA Front Wing Excalibur 1344 | 1,344 | -4.0% | 10.20 | -1.0% | 1,170 | C4 High aspect |
| GONG | Trail V3 Atmo L | 1,350 | -3.6% | 10.10 | -1.9% | 1,170 | C4 High aspect |
| North | Sonar HA1450 HA1450 | 1,450 | +3.6% | 10.00 | -2.9% | 1,200 | C4 High aspect |
| GONG | Sirus V3 Atmo L | 1,400 | +0.0% | 11.00 | +6.8% | 1,240 | C4 High aspect |
| Armstrong | APF (All-round Pump Foil) APF1350 | 1,350 | -3.6% | 10.70 | +3.9% | 1,202 | C4 High aspect |
| RRD | Universal Moonfish Front Wing Y30 1350 | 1,350 | -3.6% | 10.70 | +3.9% | 1,200 | C4 High aspect |
| Duotone | Glide 2.0 SLS 1350 | 1,350 | -3.6% | 9.90 | -3.9% | 1,160 | C4 High aspect |
| KT Foiling | Atlas 1340 Atlas 1340 | 1,340 | -4.3% | 11.10 | +7.8% | 1,220 | C4 High aspect |
| Family | Jam |
|---|---|
| Size | JAM 1400 |
| Area, cm² | 1,400 |
| Area basis | unknown |
| Span, mm | 1,200 |
| Chord, mm | — |
| Aspect ratio | 10.30 |
| Band | C4 High aspect |
| Brand files it under | Pump / dock |
| Disciplines | pump, downwind |
| Construction | HM carbon |
| Model year | 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.
See F-One 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.