GREAT PLANES Piper j-3 cub Gebrauchsanweisung - Seite 8
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holes in the control horns. Slide a piece of 1" [25mm] heat-
shrink tubing onto one of the pushrods for each wing panel.
❏
4. Center the aileron. Overlap the pushrod ends and join
them with the heat-shrink tubing. CAREFULLY use a soldering
iron to shrink the tubing around the pushrods. Keep the iron
away from the foam and move it quickly back and forth across
the heat-shrink tubing until the pushrods are joined together
tightly. We do not suggest using a heat gun or micro torch
to shrink the tubing as this will melt the foam that is close to
the pushrods. When satisfied, apply a couple drops of CA glue
to each end of the heat-shrink tubing.
Install the Wing Struts
❏ ❏
1. From the bottom of the fuselage measure up 5/16"
[8mm] and make a mark. Measure forward from the mark 1/4"
[6mm] and make another mark. On each of these marks drill a
1/8" [3mm] hole at a 30° upward angle to the fuselage. Do not
use a electric drill to make the holes. Just twist the drill bit using
your fingers. You do not want to drill all the way through the
fuselage. Just drill in far enough so the drill bit just makes
contact with the skin on the opposite side of the fuselage.
❏ ❏
2. On the inside of the wing rib measuring from the
front of the rib, make a mark 1-1/4" [32mm] back from the
front of the rib. Measure back 2-1/8" [54mm] from that mark
and make another mark. Hand drill a 1/8" [3mm] hole on
each of the marks using the same technique used for the
other holes. When drilling these two holes do not drill
through the top of the wing and be sure the hole is
through the wing rib but as close to the bottom of the wing
as possible.
❏ ❏
3. Install a strut into the holes. DO NOT glue them in
place at this time.
❏
4. Repeat steps 1 to 3 for the other side of the fuselage.
Note: When drilling the holes in the opposite side of the
fuselage, move the location of the two holes forward or back
from the dimensions specified so the struts do not conflict
with the struts on the opposite side of the fuselage.
❏
5. Look at the wing to be sure the wing is straight, without
any twist. The wing should be flat without any dihedral. When
you are satisfied with the wing, glue the struts in place with
medium foam safe CA. Be sure to get a good bond between
the struts, the wing and the fuselage. The struts are a
functional, structural part of the construction of the plane
and it is important that they are secured well.
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