Griffin manual: 19
C-riser control
Minor course and pitch corrections work well when using the C risers for steering.
However, we recommend that the pilot makes most of the corrections with the speed-bar
as this is safer.
CAUTION: C riser control should not be used in strong turbulence. In this case, release
the speed bar and fly the glide actively with the brakes.
Use small inputs during C-riser control to reduce the risk of stalling the wing
Rapid descent techniques
Learn and practice the techniques in this section under qualified supervision. Big ears and
spiral dives are generally the most common methods of descent. Big ears can achieve a
moderate rate of descent with the advantage of forward speed and manoeuvrability.
Spiral dives attain higher rates of descent, but the G-forces can be significant and the
manoeuvre is more technically demanding. ‘B-stalls’ have little or no advantages
compared to the other methods of descent and therefore are not recommended in normal
situations.
Big ears
To enter big ears, pull down firmly the outermost A lines on each side of the wing one-by-
one until the wingtips fold under. The glider can then be steered by weightshift. Do not
use the brakes unless you intend to exit big ears.
Once in big ears, you can increase your sink rate and forward speed by applying the
speed bar. Always apply the speed bar AFTER entering big ears, never before.
To exit big ears, release both A lines at the same time. Apply brake progressively one side
at a time to help re-inflation. Be careful not brake too deeply on both sides at the same
time as this could cause a stall.
WARNING: Uncontrolled re-openings after rapid descent techniques, collapses, extreme
manoeuvres or during ground-handling may place additional stress on your glider.
WARNING: Do not attempt to release big ears near the ground.
TIP: Always try to avoid the need to use these descent techniques. Thoroughly check
the conditions before launch, and pay close attention to how the day develops.
Spiral dives
Before entering a spiral, make sure you have adequate height for recovery. To enter the
spiral dive, weight shift and progressively apply the inside brake until the glider enters the
spiral. As the glider accelerates into the spiral, centre your weight and control your rate of
descent with weightshift and outer brake.
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