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GRADIENT GOLDEN 2
by Greg
Hamerton.
Greg has been flying since 1992 and has flown over 100 wings. He
prefers responsive handling and agility but rates passive
stability highly as he enjoys taking photographs and snoozing whilst
gliding.
You might also like to read:
Other paraglider reviews
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Introduction
Gradient are now a major brand. In the past I've found Gradient
handling to be a bit dull, but their straight-line performance has
always been great.
Construction
Light-weight gear always impresses me. The wing is only 5kg, so with my
Sup'air
Altirando harness, Brauniger Sonic vario, GPS, helmet and
reserve I'm coming in with a 10kg pack. Definitely the most
glide-per-kilogram you can get in a production glider, short of buying
a specialist bivouac wing.
The upper lines are unsheathed dyneema which reduces weight and
increases performance slightly. The dyneema lines I'm used to are
fluffy inside and shrink with moisture and need to be stretched
regularly. But these lines look very
different - LIROS Dyneema is a woven thread and looks durable.
Gradient's Ondrej Dupal commented that they are stronger than the
traditional sheathed line. When lines are very thin (top
cascade), stitching it becomes very difficult and prone to
strength-robbing errors. These dyneema lines are finger-trapped, which
retains all of the strength. Great idea, and since they are short lines
in the upper cascade,
variations in length won't affect the trim much anyway.
Launching
Because it's so light it's easy to launch in light winds. It
has simple handling, although it will collapse if you let it
overshoot slightly (which it wants to do). I like wings that want to
fly, but I know that it requires good groundhandling skills to keep
this kind of wing under control.
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In the air
Roll and pitch dampening is adequate, agility is high - it is a
pleasure to thermal, very responsive to your inputs. This is the
Golden2's strong point and will make it popular with many pilots -
those pilots who want to have an active hand on the controls. I had
great fun doing acro on it.
Flying it slow (for instance toplanding in a tight space) you
have
to be careful to avoid stalling, more so than some of the milder wings
in
this class, but similar to the Swing Mistral4.
Performance
The Gleitschirm Mag report (July 2007) gives it a glide of 8,6 which
puts it alongside the Nova Mamboo in top position for its class, and
the same as last year's DHV2 class winners. I can confirm that it has
top performance.
When I flew against a Swing
Astral5 (DHV2) I was impressed that the glide was indistinguishable. On
speedbar there was a loss of glide against the DHV2 wing
and
slightly less top speed. But testing the Golden2.28 against an
Airwave Sport 3 L (DHV1-2) I found a noticeably better glide on the
Golden2. Similar trim speed, 3km/h more top speed. At full speed
the glide angles became similar between Sport3 and Golden2.
Safety
When I collapsed the wing 50% and stayed level in the
seat, it would only turn and dive a little, and swing out before 90
degrees. However, if you allow your weight to shift into the collapse (as it tends to do),
you get 360 degrees of diving spiral turn. If you lean away from the
collapse you can turn it in the opposite direction easily. In other
words, it has immense agility and will respond to your body position. This behaviour makes it a 'hot DHV1-2' in my books - it
requires an alert pilot. It's not the kind of wing you can just bumble
along on and be saved from your errors.
Asymetrics on full speedbar were well-behaved if you keep your seat-board
level. Practically I found the full speedbar position produced a weak
aerofoil, prone to collapsing (outer half of wing) and reluctant to
reinflate.
In rough strong-wind conditions on a low turbulent ridge I
repeatedly suffered collapses when on speedbar, even with big
ears
in (okay, I'll admit conditions were crap), and eventually just left
the collapses folded in. What you're left with is responsive to your
weightshift without diving off-line, so I could pilot it out of trouble
reasonably well.
If I was a DHV1-2 pilot, I know I would wish the wing had been
trimmed less for performance and more for
stability - it has little resistance to collapsing when accelerated.
Big ears (and collapses if counter-steered) remain folded in and need a
firm pump to reinflate, a sign that the tips are trimmed for speed and
not toed-out for spanwise tension.
The spin approach was mellow, no surprises, giving a decent spiralling turn
first.
Stall approach was early, I found it at just over 60cm travel from the
point where the brake lines engage the trailing edge. This could catch
the stronger pilots by surprise. The brake pressure did not increase
noticeably and remained moderate throughout the range.
For an active pilot the safety is good, it's easy to control this wing
to do what you want. If you're clueless, it will probably scare you.
Speed
The 15cm speedbar travel is as far as the wing can go, roughly 50km/h.
The glide definitely degrades at top speed and
stability
becomes questionable. Best to use 1/2 bar only, in bumpy air. Trim
speed is nice and high - I kept up with most wings.
Summary
They've rewritten the company image with this wing - the Gradient Golden 2 has amazing agility and is great to thermal.
In trying to outperform everyone on glide (and they have succeeded in
that) Gradient have produced a wing which is so close to the DVH2 class
that the appeal is limited for DHV1-2 pilots. The kind of pilot who is
experienced
enough to handle this Golden2 properly is an active pilot with 150+
flights (70hrs), or someone who could fly the DHV2
class Aspen2 but wants more agility. I feel this wing is a too hot for a low-airtimer or
intermediate pilot; it needs careful piloting. It is very nice to fly, though.
| Weight of wing
|
5 |
*
* * * * |
| Glide
|
5 |
*
* * * * |
| Handling
|
4 |
*
* * * |
| Safety
in class |
3 |
*
* * |
| Full
Speedbar |
2 |
*
* |
|
|
|
Additional
Comments
I was given a Golden 2.26 proto to test first.
Although performance was fantastic it had a nasty spiral dive recovery
from some asymetric collapses and collapsed on full speedbar in smooth
air.
I found a similar behaviour on the Golden 2.28 proto. Gradient changed the design slightly after those protos. So I was
particularly thorough when testing the certified version 2.24
because I had to be sure it didn't display this behaviour. It
doesn't - provided you follow the DHV test protocol correctly and don't
allow your weight to shift into the collapse. It is remarkably
responsive to weight shift during collapses and can be weight-shifted
in a turn away from the collapse too.
The brake lines on the production version came from the factory set too
short. They were marked off at a position which did not correspond with
the specified line length, and I had to retie them to allow the
trailing edge to have enough freedom to remain released when on full
speedbar. I advise checking this. |

Golden 2 has a great performance.

Fun for acro, easy to bank it up

Just what you want after work

Average trim speed
|
Technical
specs : GRADIENT GOLDEN 2 24
Rating : DHV1-2 (2007)
| Flat area (m2) |
|
24.2 |
| Projected area (m2) |
|
21.3 |
| Aspect ratio |
|
5.4 |
| Proj. AR |
|
4.4 |
| Wing weight (kg) |
|
5.0 |
| Length of lines (m) |
|
6.9 |
| Speedbar travel (cm) |
|
15 |
| Weight range (kg all up) |
|
70-90 |
| Reviewed at (kg) |
|
88 |
|
More information
Try the Gradient
website
For a test flight in South African
get hold of James Braid at Freeflight
Para2000
for more detailed specs.
Glide ratios : Jerome
Daoust Gleitschirm Mag report

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