Armstrong, 2024

Downwind Performance FG

2489mm long · 8'2"

426mm wide

149mm thick

98litres

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

Longer and leaner than most. A pin tail, a medium nose and curvy rails.

derived · against the 66 other downwind foil boards in the atlas, read off the outlines.

As listed by Armstrong

Armstrong Downwind Performance FG: every size as listed by Armstrong
size	length	width	thickness	weight
98 L	8’2 · 2489 mm	426 mm	149 mm	–
108 L	8’11 · 2718 mm	438 mm	149 mm	–
118 L	9'6 · 2896 mm	438 mm	149 mm	–

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

Next to your board?

Lay the Armstrong Downwind Performance 98 L over up to four others, at one scale.

Compare with…

Shape & Rocker

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

Read off the 98 L outline · derived

52 %wide point, 1303 mm from the tail

5.80length over width

243mm wide 12″ from the tail

8,137cm² of planform

Read off the 108 L outline · derived

52 %wide point, 1423 mm from the tail

6.20length over width

235mm wide 12″ from the tail

9,075cm² of planform

Read off the 118 L outline · derived

51 %wide point, 1482 mm from the tail

6.56length over width

226mm wide 12″ from the tail

9,736cm² of planform

Rocker of the 98 L · borrowed (≈), estimated

≈ 109 mmtail rocker, at the tip

≈ 27 mm12″ from the tail

≈ 61 mm12″ from the nose

≈ 155 mmnose rocker, at the tip

≈ 688 mmflat to within 3 mm, from 32 % to 60 % of the length

47 %of the length to the lowest point, from the tail

≈ 149 mmat its thickest, 42 % from the tail

≈ 47 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 108 L · scaled from the 98 L, borrowed (≈), estimated

≈ 120 mmtail rocker, at the tip

≈ 33 mm12″ from the tail

≈ 71 mm12″ from the nose

≈ 170 mmnose rocker, at the tip

≈ 725 mmflat to within 3 mm, from 33 % to 60 % of the length

47 %of the length to the lowest point, from the tail

≈ 149 mmat its thickest, 42 % from the tail

≈ 52 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 118 L · scaled from the 98 L, borrowed (≈), estimated

≈ 129 mmtail rocker, at the tip

≈ 37 mm12″ from the tail

≈ 79 mm12″ from the nose

≈ 182 mmnose rocker, at the tip

≈ 752 mmflat to within 3 mm, from 33 % to 59 % of the length

47 %of the length to the lowest point, from the tail

≈ 149 mmat its thickest, 42 % from the tail

≈ 55 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 · drawn hollow: no usable side photo of this board · shaded: the middle 80 % of its group · No usable side photo of this board: the median of 17 hard downwind boards from 15 product lines. Tail ends set by rule, Claude or a brand convention on their photos, none checked by a person. · estimated