Armstrong Alloy S1 Foil Kit


Armstrong Alloy S1 Foil Kit

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Armstrong Step 1 Foils

Redefining how we learn to foil, the Step 1 (S1) foil range delivers remarkable stability, ultra low flying speed and
an instantly intuitive feel to make the first step into foiling as accessible and forgiving as possible.
Pitch, roll and yaw stability are critical to success when building foiling skills. The S1 design achieves a near
autopilot-like level of predictability thanks to a combination of leading and trailing edge sweep, chord length and
foil section geometry. The result is an ultra easy platform for first time flyers to learn any foiling discipline.
The S1 foils fly at a remarkably low speed with a high degree of controllability so that riders can practise
manoeuvres with less risk and a lower learning curve. When overpowered, the foil reduces breaching with a
tendency to fly itself back down when approaching the surface. Because these foils handle speed and ventilation
so well, riders can enjoy an exceptionally broad usable speed range in each size. Downturned wingtips provide an
extra element of safety.
Built to the same tolerances as our other foils, the S1 range is constructed from carbon composites which provide
an excellent strength to weight ratio.

• An ultra easy platform for first time flyers to learn any foiling discipline. Excellent low speed lift, stability
and recovery from ventilation.
• Leading and trailing edge sweep for stability and a narrower span to minimise breaching.
• Downturned wing tips increase rider safety and improve the efficiency of water flow.
• Proprietary Armstrong A+ System foil connection design offers industry-leading stiffness, durability and
• The S1 300 stabiliser was designed alongside the S1 foils to provide riders with the best learning platform

Tech Specs:
1250cm2: Span 848mm, Aspect Ratio 5.7
1550cm2: Span 905mm, Aspect Ratio 5.3
1850cm2: Span 965mm, Aspect Ratio 5.0
2450cm2: Span 1054mm, Aspect Ratio 4.8
300cm2 stabiliser: Span 410mm, Aspect Ratio 5.7

Armstrong Alloy System

The Armstrong Alloy System was designed to enable riders of all skill levels to chase endless experiences on the
water. Its modularity, broad performance range and exceptional build quality empowers riders of all levels to
progress without limits.
Modularity is core to the Alloy System design. It’s fully compatible with all our front foils and stabilisers so as
riders’ style evolves, so can their setup. Building on the knowledge and technology that led to our industry-leading
carbon Performance Mast, the AA mast shape and structure are optimised from top to bottom for an excellent
balance of efficiency and strength. This approach to design and attention to detail is exemplified in the Alloy
System’s specially machined mast top and SailGP-inspired bottom bracket that are crafted from aerospace-grade
aluminium alloys.
The system is outfitted exclusively with premium titanium and surgical stainless hardware for a light and highly
corrosion resistant setup that’s durable over time. Industry-leading manufacturing tolerances make for a high
performance, beautiful fit and finish overall.
• Hexagonal fuselage shape is inherently strong, stiff and modular for an easy front foil swap.
• The mast section is 17.5mm thick; efficient through the water, yet strong to withstand the loads of
advanced riding.
• Aircraft-grade 6061 and 7075 alloys for excellent strength to weight ratio.
• Titanium and stainless hardware save having to disassemble frequently so it’s easy to use and maintain
with excellent corrosion resistance. Screws are custom-made M7 and M8 x 1.25.
Tech Specs:
• 85cm (33.5”), 72cm (28.5”), 58cm (22.5”) mast lengths
• 75cm, 65cm fuselage lengths

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