Windtech kinetik - Manual (Page 8)

8
the trimmers are pulled fully ON (pulled all the way through the ratchet, so that the rear
risers are effectively pulled down to their shortest position) the glider will fly at full slow
trim speed. When the risers are released all the way OFF (ratchet pressed, so that the
webbing slips all the way and the rear risers are in their longest position) the glider will
fly at full fast speed. It is vitally important that that you fully understand all of the
effects and implications of flying at different trim speeds, as this changes the handling,
safety and performance characteristics of any wing.
There are two lines of stitching on the webbing of the trimmers which are set at “nor-
mal” trim and a faster “powered flying” position. When the trim is set to the first stit-
ching line (normal trim), this is the speed that should be used for taking off, landing and
flying in turbulence.
If you then raise the trimmers up to the second line of stitching, this is the faster “powe-
red flying” trim position (the actual speed will depend a lot on wing loading), in which
the trimmers are set to compen-
sate for the pitching back effect
caused by the push of the motor,
bringing the wing into a more
overhead position and giving
increased speed and performance.
Of course, caution should always
be used when low down and one
should always fly with the trim-
mers in the “normal” trim position
in turbulence and when near the
ground.
The trim travel will continue
slightly further than the “powered
flying” setting, to “full trim
speed”, but one should only ever
use this trim position in very smooth conditions, and with plenty of height, due to the
greatly reduced angle of attack of the wing. If the pilot requires more speed in turbulent
conditions, we recommend that the pilot leaves the glider in “normal” trim position and
makes use of the speed system.
> best glide
-- un-powered flight
Best glide in nil wind, and still air, is obtained at “trim” speed that is brakes fully relea-
sed and no accelerator (speed bar) applied. It is always best to fly with a light pressure
on the brakes, keeping a “feel” on the wing in case of unexpected turbulence.
Normal
Position
Powered
flying position