Control Linkages
(continued)
85.
Cut a 3/4 in. long piece from the 1/16 in. heat shrink tubing (supplied in the kit). Slide the
tubing over two pieces of the scrap .015 in. wire. Use a heat gun or a warm soldering iron
to shrink the tubing over the wire. Allow to cool thoroughly.
When the tubing is completely
cool, remove the wires, and cut the tubing into two equal 3/8 in. long pieces.
86.
Slide one piece of the pre-shrunk tubing onto the elevator pushrod. Fit the “Z” bend of a
connector through the hole in the elevator control horn. Slide the tubing over both the
pushrod and connector. Adjust the trim by sliding the wires past each other until the
elevator is centered. When satisfied that the elevator is in the correct position, apply a
small drop of medium CA to each end of the heat shrink tubing, to secure it in place.
Repeat this step to connect the rudder to the rudder push rod.
Wing Attachment
87.
Slide the spar W5 (sheet 10/10, 1/32 in. ply) through the slots in the fuselage sides
above
the cockpit, until the two notches in the spar are centered just beyond the outer face of the
fuselage side.
Do not bond!
88.
Fit one rib W6 (sheet 07/10, 1/16 in. balsa) into each of the notches in the spar. Use a
scrap piece of 1/32 in. wire, and pass it through the alignment holes in the ribs and fuselage
sides, to ensure proper positioning of the rib. Bond the rib to the fuselage side by applying
a small bead of medium CA along the
bottom
of the rib where it meets the fuselage.
89.
Fit the wings by first inserting the tip of the spar W5 through the slot in rib W2. Next, fit the
root of the wing to the tabs on rib W6. Use CA to bond the wing to the spar and to rib W6.
Wing Struts
90.
Slit the covering over the slot in the fuselage side, just above the landing gear fairings, to
receive the base of the wing struts. Fit the
outer
ends of the wing struts to the slots and
notches in rib W3. The arrow at the tip of Sa indicates the
front
of the strut. Fit the base of
the strut into the slot on the fuselage side. Make sure the
outer
tips of the struts are fully
seated. Inspect the model from the
rear.
Position the model so that the leading and trailing
edges of the wings are in line at the
center
of the wings. If the struts are properly
positioned, the trailing edges should be approximately 1/8 in.
above
the leading edges at
the wing tips. This is called “washout”. Washout helps the stability of the model.
The exact amount of washout is not critical, but it must be the same at each wing tip.
If the wing panels are not properly aligned, separate the wing struts from the wing at rib W3,
and reposition them until the wings are properly aligned. Once satisfied that the wings have
the correct and equal amount of washout, “final bond” the wing struts with medium CA.
Apply a small bead of medium CA along the
top
of the strut base where it meets the
fuselage side.
Build Instructions
Stinson 105 UM
- Build Instructions © 2015 Stevens AeroModel, all rights reserved.
!
Page 32
□
□
□
□
□
□
