GIN Boomerang 10 - Manual (Page 36)

Boomerang 10 36 / 62
Riser and speed system
Risers
The 12mm wide risers specially developed for the Boomerang 10 with Kevlar reinforcement
allow the pilot to use a pulley system to adjust the speed of the Boomerang 10 to suit
individual preference. All technical data and measurements are provided in the CCC ‘Test-Lab-
Template’.
Fig. 6: Boomerang 10 riser
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.
Under CCC rules the risers have to include a limiter between the main A riser and the B riser, to
prevent acceleration beyond the certified top speed of the glider (the speed at which the glider
passed the CCC high speed flight tests). Many top pilots find that the optimum speed system
setup is to rig the system so that the limiters are just tight when the legs are comfortably fully
extended (knees locked) on the top bar of the speed system (if multiple steps are used). This
maximizes comfort and ensures that the speedsystem is symmetrically applied, and allows the
pilot to keep the wing fully accelerated while using the B-risers to steer the wing and control
pitch in turbulence.
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.