Armstrong S1 Alloy Foil Kit

Armstrong S1 (Step 1) foils 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.

Features of the Armstrong S1 Alloy Kit:

• 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 modularity.
• The S1 300 stabiliser was designed alongside the S1 foils to provide riders with the best learning platform possible.
• 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.

Choose from one of the following configurations to get your first full Armstrong foil:

• S1 1250
• S1 1550
• S1 1850
• S1 2450

*Kit comes complete with foilbag and all hardware.
 

MODEL	S1 1250	S1 1550	S1 1850	S1 2450
FRONT WING AREA	1250 cm2	1550 cm2	1850 cm2	2450 cm2
SPAN	848 mm	905 mm	965 mm	1054 mm
AR (Aspect Ratio)	5.7	5.3	5.0	4.8
REAR WING	S1 300	S1 300	S1 300	S1 300
FUSELAgE	AA75	AA75	AA75	AA75
MAST	AA72	AA72	AA72	AA72
WEIGHT	-	-	-	-

Here you have a video presentation of the Alloy system:
 
Another video about the entire Armstrong Alloy collection:
 
And finally the video about how assemble these foils: