7
3. Before you fly
Pre-delivery Inspection
The Boomerang9 is delivered with speed system, rucksack, inner bag, concertina bag, riser cover,
compression strap, repair tape and this manual. Your instructor or dealer should have made a
test inflation followed by a test flight before delivery.
Speed System
The speed system increases the maximum speed by lowering the angle of attack with a pulley-
guided, foot-operated system.
It is important to have your accelerator system correctly routed through your harness and
attached to the risers with the supplied Brummel hooks. The length of the speed bar should be
initially adjusted while on the ground, sitting in the harness so that the legs are fully extended
at the point of full accelerator travel. It is helpful to have an assistant hold the risers taut while
making this adjustment.
Subsequent fine-tuning can be done on the ground following the first flight with the speed
system. If in doubt about this procedure, consult your instructor or dealer.
Brake line adjustment
The main brake line lengths of the Boomerang9 are the same as on the sample that has been
used for the EN/LTF certification test flights. These line lengths have been fine tuned by GIN
test pilots, and it should not be necessary to adjust them.
In soaring flight, it is common to fly 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 flying style, we strongly
recommend that you test fly the glider with every 2cm of adjustment. There should be a
minimum of 10cm of free brake travel when the glider is flown hands-off. This prevents the
brakes being applied unintentionally when the speed system is fully engaged. We recommend a
double sheepshank or a bowline knot for the brake handle attachment as shown in the diagram.
Rucksack
All Gin gliders are delivered with a durable ripstop KODURA
®
rucksack with 160L capacity. This
rucksack has been re-shaped and re-designed for
Summary of Contents for Boomerang 9
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