Advance acoustic LIGHTNESS 3 Manual page 17

2 Speedbag adjustment
Correct speedbag length is essential, because the fixed foot posi-
tion sets the pilot's centre of gravity position relative to the carabi-
ners, and thus the speedbag flying attitude. For minimum drag the
underside of the speedbag should be horizontal in flight. To set this
critical heel length first completely loosen the upper blue speedbag
lines . Then set the middle grey lines
heel (bottom of footboard) position. Heels too low – shorten: heels
too high - lengthen. Approach this position in max 2 cm steps
(equal both sides). Then shorten the upper blue footboard lines
(toes) to find a comfortable angle for the feet. Finally adjust the
lower blue lines so that they are under light tension when the
feet comfortably load the footboard.
3 Setting upper body angle
Set your back-recline angle with the back straps
can pull in/ loosen the shoulder straps
gree of support – loose, or light contact: not too tight.
4 Fine adjustments
The lower back straps
also helps you find a better position if the underside of the spee-
dbag is not yet horizontal. You can increase seat surface support
with the thigh straps by pulling them in for light leg support.
to achieve the correct
. Then you
to suit your desired de-
set your lower back (lumbar) support. It
5 Chest strap adjustment
The chest strap sets the distance between the main support
points (carabiners). The chest strap is closed by the 2-Buckle-
System and completes the Safe-T-System. ADVANCE recommend
a loose to lightly-loaded setting (approx. shoulder-width carabiner
distance).
6 The wider this distance the more agile is the pilot/glider relations-
hip, both in roll feedback to the pilot and pilot ability to weight-steer.
A narrower setting creates a quieter and more damped feeling
from the wing. This adjustment range is large. Agility can be set to
any position in flight to suit the conditions – as the pilot wishes.
Tip: The most important factor for chest strap adjustment is that
the pilot feels happy in the harness
7 Mini chest strap setting
The mini chest strap holds the shoulder straps in place for ta-
keoff and landing. Width can be set as required.
8 Final settings check
Check the horizontal speedbag attitude again - best observed by
a third party or in a big mirror. Make sure that the front edge of the
seat does not press into the backs of the knees. If it does, loosen
the thigh strap; but do to hesitate to repeat all or any of the adjust-
ment procedure as often as necessary.
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