Owners Manual XIX FORM 3
B-Line Stall
B-line stall
The B-line stall is another efficient descent method.
This gives you a sink rate of 6-9 m/s. Check the
airspace below and behind you before pulling a
B-line stall. To begin, grab the B-risers at the line
connections.
While holding both brakes firmly in your hands, pull
the B-risers down symmetrically and progressively
until you pass the first marked point of resistance
and the glider loses speed. Hold this position. The
glider will stop and partially deflate before stabilising
over your head.
To recover, release the B-risers back to their normal
position evenly over a period of one second. We
recommend that you do not let the B-risers ‘snap’
out – this puts severe stress on the fabric, seams
and lines. See the section below on ‘extreme flying’
for what you should do if you go into a deep stall
(which would be unusual).
The disadvantage of the B-stall descent method is
the fact that the airflow over the glider stops com-
pletely and you remain in the lift. Even though the
FORM 3 does behave very well in this particular
manoeuvre, it puts unusual stress on the fabric and
is therefore not recommended.
Extreme flying
You may find yourself in the following situa-
tions despite your best intentions due to tur-
bulence or because you have over-reacted. We
are therefore describing them but strongly
advise that you only try them with competent
supervision over water so that you learn to
control them properly.
Collapses
This can happen if you are flying in turbulent air but
is usually no problem with the FORM 3, since it
normally recovers immediately from a collapse up
to a half span without any pilot input.
If the FORM 3 does not immediately recover and
begins to rotate, brake slightly on the side of the
glider which is still open. Control the flight direction
in this manner, particularly if you are near any obsta-
cles. Apply strong sharp pumps with the brake on
the closed side to accelerate recovery.
Big collapses more than half the wing span will cause
the glider to swing forward and rotate. Too much
brake on the side which is still open can cause a
complete stall. Braking slightly, let the wing move
forward to recover the normal angle of attack. Do
not force the wing to stay in a vertical position over-
head or to re-inflate immediately. It takes time to
recover from this manoeuvre.