Nova ARGON 20, Manual

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Speed system:
The NOVA ARGON can be equipped with a stirrup operated speed
system. However, the Gutesiegel classification may change with various
sizes of glider when flown accelerated.
Check certificate for sizes!
The speed system affects the A and B-risers. In normal flight all risers
have an overall length of 52.5 cm.
When the stirrup is pushed out the A-risers are shortened by up to max.
10 cm and the B-risers are shortened by up to max. 6 cm . The C-risers
retain their original length.
An incorrectly fitted speed system causes a loss of certification!
How is it fitted?
Most modern harnesses have pulleys attached for speed system fitting.
In case not, 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.
The NOVA speed system, including “Brummel-hooks“ supplied, must be
assembled as per instructions.
The speed system cord is firmly attached (use bowline or other nonslip
knot) to the foot stirrup (webbing or alloy bar). The other end of the cord
is run through a pulley on the harness and then in an upward direction to
be then firmly attached to the “Brummel-hooks“!
The length of the cord leading to the stirrup should be adjusted so that it
is easy to put your feet into the stirrup in flight but still short enough to
allow full speed system travel. (Use of 2 stirrups in a ladder fashion can
enable you to reach the full range if your legs are not long enough.)
Ensure both cords on the stirrup 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 2 pulleys join together.