Armstrong, 2025

Downwind Mk III

2311mm long · 7'7"

476mm wide

146mm thick

115litres

Open in Studio See it on armstrongfoils.com

Sizes & Numbers

Listed by the brand, read off a photo, or worked out: where every number comes from

In one line

Shorter and narrower than the 2024. The 115 L is 51 mm shorter and 38 mm narrower than the Mk II (Downwind FG) 116 L.

115 L against the Mk II (Downwind FG) 116 L, listed length and width.

As listed by Armstrong

Armstrong Downwind Mk III: every size as listed by Armstrong
size	length	width	thickness	weight
95 L	6’11 · 2108 mm	464 mm	140 mm	5.4–5.8 kg
105 L	7'3 · 2210 mm	470 mm	146 mm	5.6–6.2 kg
115 L	7’7 · 2311 mm	476 mm	146 mm	6.2–6.8 kg
125 L	7’11 · 2413 mm	489 mm	152 mm	6.4–7 kg
135 L	8’2 · 2489 mm	489 mm	152 mm	6.8–7.4 kg

Every size side by side, tails on one line, one scale

Next to your board?

Lay the Armstrong Downwind 115 L over up to four others, at one scale.

Compare with…

Generations

Before it · Mk II (Downwind FG), 2024

The Mk III 115 L is 51 mm shorter and 38 mm narrower than the Mk II (Downwind FG) 116 L; its wide point moved 78 mm toward the tail. Open the Mk II (Downwind FG)

listed length and width · wide point derived

Mk III 115 L Mk II (Downwind FG) 116 L

The Armstrong Downwind over time

Shape & Rocker

From above, then from the side, true scale · the chosen size solid, the others dashed

Read off the 95 L outline · derived

50 %wide point, 1054 mm from the tail

4.63length over width

318mm wide 12″ from the tail

7,691cm² of planform

Read off the 105 L outline · derived

51 %wide point, 1122 mm from the tail

4.70length over width

322mm wide 12″ from the tail

8,311cm² of planform

Read off the 115 L outline · derived

51 %wide point, 1174 mm from the tail

4.93length over width

315mm wide 12″ from the tail

8,680cm² of planform

Read off the 125 L outline · derived

50 %wide point, 1207 mm from the tail

4.93length over width

321mm wide 12″ from the tail

9,446cm² of planform

Read off the 135 L outline · derived

51 %wide point, 1264 mm from the tail

5.25length over width

308mm wide 12″ from the tail

9,464cm² of planform

Rocker of the 95 L · scaled from the 115 L measured

115 mmtail rocker, at the tip

31 mm12″ from the tail

47 mm12″ from the nose

144 mmnose rocker, at the tip

649 mmflat to within 3 mm, from 31 % to 61 % of the length

44 %of the length to the lowest point, from the tail

162 mmat its thickest, 46 % from the tail

83 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 105 L · scaled from the 115 L measured

121 mmtail rocker, at the tip

34 mm12″ from the tail

52 mm12″ from the nose

151 mmnose rocker, at the tip

664 mmflat to within 3 mm, from 31 % to 61 % of the length

44 %of the length to the lowest point, from the tail

170 mmat its thickest, 46 % from the tail

87 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 115 L · measured

128 mmtail rocker, at the tip

37 mm12″ from the tail

57 mm12″ from the nose

159 mmnose rocker, at the tip

678 mmflat to within 3 mm, from 32 % to 61 % of the length

44 %of the length to the lowest point, from the tail

170 mmat its thickest, 46 % from the tail · on the photo; Armstrong lists 146 mm

91 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 125 L · scaled from the 115 L measured

134 mmtail rocker, at the tip

41 mm12″ from the tail

62 mm12″ from the nose

166 mmnose rocker, at the tip

691 mmflat to within 3 mm, from 32 % to 61 % of the length

44 %of the length to the lowest point, from the tail

177 mmat its thickest, 46 % from the tail

95 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 135 L · scaled from the 115 L measured

139 mmtail rocker, at the tip

43 mm12″ from the tail

66 mm12″ from the nose

172 mmnose rocker, at the tip

701 mmflat to within 3 mm, from 32 % to 61 % of the length

44 %of the length to the lowest point, from the tail

177 mmat its thickest, 46 % from the tail

98 mmlonger along the bottom curve than flat

Lay this rocker over other boards

True proportions · dots at 10 mm and 12″ in from each tip · bracket: flat to within 3 mm · Measured on Armstrong's photo of the 115 L. Tail end set by Claude, not checked by a person.