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Step 4: Working Rudder (optional)
Skip to step 5 if you do not wish to install a working rudder
The Super Sniper 90 can be equipped with
a working rudder. Installation of the rudder
will ease cross wind take off and landing.
The rudder is cut out of the supplied
fiberglass fin.
Mark a straight line along the molded line
in the rudder (highlighted in black in the
picture above). Also mark the bottom of
the rudder 10mm parallel to the base of the
fin.
Taper the spruce at one end to allow it to
fully slide in the fin and rudder. Trial fit the
spruce.
Glue the 4 parts into the fin and rudder
with 30min epoxy. The balsa blocks should
form a flush end with both the fin and the
rudder edges.
Remove excess epoxy with a cloth and
cleaning alcohol.
Cut the rudder out. Use a small saw or
cutting disk. Wear a face mask when
cutting the polyester.
Prepare two 6x6x160 mm and two
6x3x50mm balsa spruces to close the
rudder and create a surface for the hinges.
Once the glue is dried, you should have a
sturdy fin and rudder which perfectly
match each other.
Use sandpaper to smoothen the
balsa/fiberglass edge on the fin.
Page 17/34
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