Bruce Goldsmith Design BGD "Base" EN B sports Glider.
BGD Base is the new High End B Glider from Bruce Goldsmith
How can a few lines and some cloth be put together in a way that will fly us hundreds miles? For years we have been trying to build the perfect combination of these materials in an effort to fly further. Every year records are broken so we are definitely doing something right. We have gone through a lot of line and cloth to find our perfect combination in the BASE.
Bruce put his ‘all’ into this high performing EN/LTF-B rated paraglider. The BASE carefully treads that thin line of maximum safety and impressive performance. Bruce Goldsmith Handling, a unique nose design and Cord Cut Billow all make the BASE into a great package of stability and performance.
BRUCE'S NOTES
Do you remember the Airwave Sport? It was one of my favorites. The BASE is loosely based off the Sport series with a whole bunch of new technology. I added Cord Cut Billow to clean up the leading edge and help with weight and stability.
Leading edge mini ribs create a solid leading edge on speed while making essentially 80 cells without adding the weight of full ribs. I put a lot of time into perfecting the profile to maximize performance and stability on speed bar. The BASE is fast, fun, and my new favorite wing; I hope you will feel the same.
DESIGN FEATURES
Cord Cut Billow (CCB)
Cord Cut Billow technology has been developed to improve the form friction, glider stability and overall performance of our gliders. Two seams run cord-wise across the top panels of the leading edge, and these accommodate the panel ballooning that happens when the wing is inflated. Up to ten centimetres of excess material is created on the sides of an inflated flat panel bending over a wing profile. Normally this results in ripples on the seams, but our Cord Cut Billow technology means the bulge is absorbed into the panels, which reduces this rippling. This in turn improves the rib’s profile shape and stability.
MATERIALS
Top surface: Dominico N30
Bottom surface: Dominico N30
Internal structure: Dominico D30 DFM
Nose reinforcing: Plastic wire 2,3mm and 2,7 mm
Risers: 13 mm black Kevlar/nylon webbing
Pulleys: P-18 Harken pulleys
Top lines: DC60
Middle lines: TSL 140
Lower lines: TSL 220/280
Brakes: DSL70
SPECIFICATIONS
|
|
S |
M |
ML |
L |
|
|
Linear scaling factor |
0.95 |
1 |
1.028 |
1.05 |
|
|
Projected area |
18.72 |
20.74 |
21.92 |
22.87 |
m² |
|
Flat area |
22.56 |
25.00 |
26.42 |
27.56 |
m² |
|
Glider weight |
4.8 |
5.3 |
5.6 |
5.8 |
kg |
|
Total line length |
221 |
245 |
259 |
270 |
m |
|
Height |
7.10 |
7.24 |
7.40 |
7.80 |
m |
|
Number of main lines |
3/4/3 |
3/4/3 |
3/4/3 |
3/4/3 |
A/B/C |
|
Cells |
80/46/90 |
80/46/90 |
80/46/90 |
80/46/90 |
|
|
Flat aspect ratio |
5.68 |
5.68 |
5.68 |
5.68 |
|
|
Projected aspect ratio |
4.09 |
4.09 |
4.09 |
4.09 |
|
|
Root cord |
2.48 |
2.61 |
2.69 |
2.74 |
m |
|
Flat span |
11.24 |
11.83 |
12.16 |
12.42 |
m |
|
Projected span |
8.71 |
9.17 |
9.43 |
9.63 |
m |
|
In-flight weight range |
65-80 |
75-95 |
90-105 |
100-125 |
kg |
|
Trim speed |
39 |
39 |
39 |
39 |
km/h |
|
Top speed |
57 |
57 |
57 |
57 |
km/h |
|
Min sink |
1.0 |
1.0 |
1.0 |
1.0 |
m/sec |
|
Best glide |
10 |
10 |
10 |
10 |
|
|
Certification |
EN/LTF-B* |
EN/LTF-B* |
EN/LTF-B* |
EN/LTF-B* |
