Gin Boomerang12, User Manual, Page: 39 / 46

Boomerang 12 user manual
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Special folding lines were used when the Boomerang 12 was going through certi fi cation. Without
these folding lines, asymmetric and symmetric collapses (tucks and frontals) may not behave or
recover as per the CCC tests.
The folding lines have a special setting according to the CCC requirements. At the canopy, the
folding lines are attached to special loops at the test model. At the lower end, their three main lines
are attached to a special riser. Please contact Gin Gliders if you have any questions regarding use of
the folding lines and riser.
The brake lines of the Boomerang 12 are set to the length that was used for the CCC certi fi cation test
fl ights. These line lengths have been fi nely tuned by the GIN test pilots, and it should not be
necessary to adjust them.
The brake line length is tuned so that there is slack in the brake lines when the glider is in fully
accelerated fl ight. Therefore, the brakes are quite slack at trim speed, and to take up that slack in
soaring fl ight, it is common to fl y with half a wrap on the brakes and hold the handles on the knot.
However, care should be taken to release the wraps in any extreme situation.
If you do need to make adjustments to suit your harness, body and fl ying style, we strongly
recommend that you test fl y the glider after every 2 cm of adjustment. There should be a minimum of
10 cm of free brake travel when the glider is fl own hands-off. This prevents the brakes being applied
unintentionally when the speed system is fully engaged. We recommend a brake line knot for the
brake handle attachment as shown in the diagram:
Brake line knot
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