Speed System
The
SOL ELLUS
can be flown with a foot-operated speed system.
However, the certification classification may change: check the
certificate. An incorrectly fitted speed system results in the loss of
certification.
The speed system changes the A, B and C-risers. In normal flight all
risers have an overall length of 52.5 cm. When the speed bar is pushed
down, the A and B-risers are shortened to 37.5 cm and 40.5 cm
respectively. The C-risers change to 46.5 cm and the D-risers retain their
original length.
Warning:
•
An incorrectly fitted speed system results in the loss of certification
ASSEMBLY
Most modern harnesses have pulleys attached for fitting a speed system.
If this is not the case, it is important to attach pulleys (sewn on tabs) in
such a way that allows the pilot to maximize the power vector of his/her
legs, without pushing back in the harness.
A quick link or clip with a very strong spring action is highly
recommended. When doing a reverse start, the control lines can
accidentally "clip in" to a carabiner with a weak spring action. This will
obviously cause severe control problems.
The length of the cord leading to the speed bar should be such that it is
easy to put your feet into the speed bar in flight and yet short enough to
allow the full speed range. Use of two speed bars in a ladder fashion can
enable you to reach the full range if your legs are not long enough.
Make sure both cords on the speed bar are of equal length to avoid
putting a turn in the glider. Test your speed system for the correct length
of cord on the ground first, with your harness and risers, before flying
with it. The full range is reached when the two pulleys meet.
Make sure that the speed system is untangled and runs freely for
operation before flying. To use the speed system, simply place your feet
on the speed bar and push forward in a horizontal plane.
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If a loss of back pressure from the speed bar on your legs is noticed, this
is a warning that the canopy is probably about to collapse. Release the
speed bar and thus the speed system immediately. With this "feeling"
you may actually prevent most tucks from happening while using the
speed system.
If a deflation does still happen, release the speed system immediately
and correct the collapse as described in the section on deflations.
Do not release the control handles.
When flying into a head wind or through sink, for best glide angle, it is
advisable to increase your speed by applying the speed system as long as
conditions are not too turbulent.
Collapses and stalls are more dynamic the faster the canopy is flown.
When using the speed system, the angle of attack is lowered. The
airspeed is increasing and the canopy is becoming unstable. Therefore,
do not use the speed system in turbulent conditions, close to the ground
or near other airspace users.
Warning:
•
Do not use the speed system in any extreme maneuvers.
•
Be careful.
Picture:
Tirantes:
1. Speed system
2. Control handle
3. Brake pulley
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