Aeros Discus 12, Руководство пользователя

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26
GLIDER TUNING
CG ADJUSTMENT
This has already been covered in the section of this manual –“Trimming Your Glider in Pitch”.
TURN TRIM
Turns are caused by an asymmetry in the glider. If you have a turn, first try to make the glider symmetrical in every way. If
a turn only appears at VG settings of 3/4 to full tight, it may be an indication that the outboard sprogs are set asymmetrically.
AIRFRAME
Check the leading edges for possible bent tubes. Check that the keel is not bent to one side.
Check for symmetrical twist in the leading edges by checking for symmetry in the alignment of tip wand receptacles.
BATTENS
Check the battens for symmetrical shape.
TIP WAND RECEPTACLES - ROTATIONAL ALIGNMENT
The plastic plug, which fits directly into the rear leading edge,
determines the rotational alignment of the tip wand. This plug is
secured against rotation by a small screw in the end of the leading
edge.
There are five holes in the plastic cap, allowing for two notches of
rotational adjustment on either side of the normal, center hole (
Photo
52
). Prior to removing the securing screw, first use a sharp knife or
another object to scribe a reference line across both the very end of
the leading edge and the edge of the plastic cap. This will mark your
starting point. Remove the securing screw and rotate the cap to see
where in the five-hole range of adjustment the cap has been initially
set.
Photo 52
SAIL TENSION
Check for symmetrical sail tension on the leading edges. In order to check this, sight the hem of the sail at the bottom of
the leading edge tube relative to the nose plate on each side. Leading edge sail tension is adjusted by shortening the tip
wands. 3 mm (1/8”) difference in the length of the tip wand can make a noticeable difference in how a glider handles. If you
have a glider that is a little too stiff, you might try shortening the wands by 3 mm.
TWISTING A TIP
After you have made everything symmetrical, if you still have a turn, you can correct it by rotating one or both tip wand
receptacle end caps. A left turn is corrected by twisting the left sail plug counter clockwise (twisting the sail down at the
trailing edge) or twisting the right sail plug counter clockwise (twisting the sail up at the trailing edge) or both. Twist clockwise
on either or both plugs to correct a right turn.
BATTEN TENSION
The two outboard most battens are tensioned by looping the batten string over the notched end of the batten twice. The
remaining battens are all fitted with spring tips. The outboard batten with strings should be adjusted quite tight for maximum
sail cleanliness. The spring batten tips will automatically set their own proper tension if they are the correct overall length.
With the lever type batten tips you have to adjust the sail tension according to the air humidity.