Windtech kinetik plus - Manual (Page 8)

8
of the wing, and have been carefully designed to give the best combination of efficien-
cy and stability across the whole speed range. When 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 characteris-
tics 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 stitch-
ing 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 “powered flying”
trim position (the actual speed
will depend a lot on wing load-
ing), in which the trimmers are
set to compensate for the pitch-
ing back effect caused by the
push of the motor, bringing the
wing into a more overhead posi-
tion and giving increased speed
and performance. Of course, cau-
tion should always be used when
low down and one should always
fly with the trimmers 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 released
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