Gradient BiGolden4 - Technical Data

Pilot’s manual for BiGolden4 2
The main C and D lines are connected to the karabiners through loops, allowing easier adjustment when your glider
is serviced.
BiGolden4 comes with a well-proven four-riser speed-system with split A-riser, and trimmers with a working range
of 80mm, which gives great maximum speed. The risers are equipped with a big-ears system, allowing the pilot to
execute the big-ears manoeuver without the necessity of holding it by hand.
Small, simple details make this glider complete. Gradient has paid attention to details too, including: clearing holes
on the wing tips, split A-riser, mini and micro attachment points on the wing tips and trailing edge and a new
rucksack, an inner bag and a riser bag.
2.2. Technical data
BiGolden4
Units
37
42
Flat Area
[m
2
]
36,50
40.50
Projected area
[m
2
]
30,90
34.28
Span
[m]
13,92
14.65
Projected span
[m]
10,99
11.57
Aspect ratio
[1]
5,31
5.31
Projected aspect ratio
[1]
3,91
3.91
Max. chord
[m]
3,17
3.34
Min. chord
[m]
1,01
1.06
Number of cells
59
59
Line consumption
1
[m]
414.34
439.15
Weight of the glider
[kg]
6.6
6.9
Take-off weight range
[kg]
100-190
120-225
Certification EN/LTF
B
B
1
- Line consumption is the sum of lengths of all lines including
brake lines.
Length of the riser:
BiGolden4 37, 42
Units
A₁+A₂
B
C
D
Basic position
[mm]
350
350
350
350
Fully accelerated
[mm]
350
370
390
430
Risers are equipped with trimmers.
Length tolerance of risers is +/-5mm.
Basic position of risers Fully accelerated position of risers