Advance acoustic SIGMA8, User Manual

Page: 14 / 40

14
like this you can achieve 100% (pulley to pulley) accelerate by press-
ing the second step with outstretched toes, or adding your second
foot to the speed loop in your speedbag.
After initial adjustment of the speed bar for leg length and harness,
fi ne adjustment is carried out by altering the 2-phase speed system
on the risers: by moving the knots which locate the gear change balls
(see ball 2 in the illustration) the speed bar travel and load can be
adjusted.
Example: If the knots are moved downwards the change
from 3:1 to 2:1 occurs earlier, then raising the loading but
shortening the total travel. Conversely, moving the knots up-
wards delays the gear change, eases and lengthens the total
travel of the speed bar.
Optimum adjustment of the 2-phase system enables a smooth tri-
ple transfer with bent legs and an effi cient double transfer with out-
stretched legs.
The SIGMA 8 speed system is arranged so that the profi le shape is
fully retained over the angle-of-attack range of the speed system.
This keeps the good qualities of the profi le at high speeds.
2