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How to do an A/C Launch
Lifting
a paraglider in stronger winds can be difficult because
of the great amount of force that the wing generates in
such winds. The paraglider can ascend so fast that it
can lift/jerk you into the air suddenly if you attempt
to stop its rapid ascent with the brakes. Flying in stronger
winds should be done with caution and this is a skill
that takes a gradual approach.
One
solution to the rapid glider ascent is the A/C launch.
This launch is called this because the wing is lifted
with one hand on the A risers and the 2nd hand managing
the C riser to slow the wing's ascent during a high wind
pull up. After getting proficient at a standard Preset
Hands launch, this variation can be learned almost instantly.
The trade off is that you lose the ability to use offsetting
lifting of the A risers as with the standard preset hands
technique. If you have solid preset hands kiting
ability, it is easy to center the wing after checking
up the wings ascent. You simpley release the A and C risers
and center the wing with the brakes.
The
brakes are set up and held in the same way as you do with
preset hands, how it differs is that only one hand lifts
the A risers. The benefit of this is that the second hand
can grasp the C riser and use it to stop and slow the
wing down during and at the end of the ascent.
Brakes are in normal "preset"
position, both A risers
go in right hand and both C risers go
into left hand.

I
recommend a C risers in one hand on any glider that has
a riser system with the full set of A,B,C and D risers.
On a glider that has a combo, C and D riser, use the combo
"C" riser.
Lift
the wing with as much A as is deemed necessary for wing
ascent. In stronger winds, you can have a little C pulled
as the wing begins its ascent. The slight pull on this
will slow the wings ascent and eliminate the wings power.
In strong winds you may still get pulled back as the wing
ascends. By using the A/C technique, the pull will be
significantly less than a standard lift. The big benefit
is that instead of having to pull some brakes to stop
the wing from over-flying you (this often results in getting
yanked violently into the air, or if not caught in time,
a frontal collapse), you can pull just a few inches of
C riser to manage how fast the wing comes overhead. The
key is to learn to adjust how much C riser to pull as
the wings ascent speed dictates. Click the below image
for a video that shows the whole process in slow motion,
then at full speed.
At this point, the C risers are pulled
about 2 - 3inches
If the wings ascent slows too much, let up on the C risers.
If the wing continues to ascend, pull a little more C
riser. 
Click Picture above for Video
of an A/C launch
it happens pretty quick, watch for quick pull of left
hand in the
It
is best to try this technique out when the wind is not
too strong (less than 12 mph or so). Practice how much
C to pull and when to release. Once the wing has climbed
overhead, simply release the C riser and go to the brakes
to center the wing. If the wing is off to the side, centering
is not difficult because of the higher winds.
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