.
c. Using thin CA start at one side of the servo opening and flow glue into the tape
with a side-to-side motion. As the glass tape turns clear move on around the
center seam until the complete length of the tape is glued. Remove any exrtra
glue with a clean rag.
Try not to flood the tape with excess glue as it will cure quickly and cause bumps
and snags in the glass tape, which would result in more sanding.
d.
Sand the center seam smooth, being careful not to sand into the glass tape too
much - just remove the rough spots and cut the peaks off the weave of the tape.
47.
Glue the 1/32" plywood wing bolt
plates (P-9) in place on the bottom of
the wing.
48
a.
Cut two ailerons to length from the
1/2"x1 1/2" aileron stock. Temporarily
tape the ailerons to the wing, carve and
sand the ailerons to match the
wingtips.
b.
Using a short sanding block fair all of the lines of the wingtip into the wing. Round off all of the corners to a pleasing
shape.
49
Fill in any dings, dents or gaps with glue and/or filler. With a long sanding block sand the entire wing to remove any bumps
and sharp edges. Try to achieve a smooth even surface all over the wing.
NOTE: You must have a completed bottom wing to proceed with this phase of the construction.
MOUNTING THE BOTTOM WING TO THE FUSELAGE
50
a.
Careful alignment is particularly important with biplanes, so take your time and
be very accurate when making alignment marks and when taking
measurements. Mark the center of the leading and trailing edge of the bottom
wing on the bottom of the wing. Also mark the center of the fuselage at the front
and rear of the wing saddle.
b.
Place the bottom wing on the fuselage and check the fit. If everything was
properly built the wing should fit into the opening without any gaps. If the wing
does not fit properly, now is the time to sand off any bumps or to fill any hollows
to match the contour of the wing.
DO NOT CHANGE THE INCIDENCE OF THE WING
- this is critical to the flying characteristics of the airplane.
b.
Tape the wing to the fuselage and take measurements from the outer end of the
aileron cutouts to the tail of the fuselage. Both measurements should be the
same. If not, rotate the wing, keeping the leading edge in place, until both
measurements are identical. Remark the trailing edge to reflect the correct
position. Remove the wing from the fuselage.
51
a.
Generate a shallow point on one end on each of the two 1/4" diameter x1 1/2"
dowels, keeping the point centered on the end of the dowel. Push the dowels
into the holes in F-3 until only the points are sticking out. With the wing lined up
on the marks made earlier slide the wing into the opening until it is fully seated.
When you remove the wing there should be two small indentations in the leading
edge. Make a cross mark at each indentation with lines at least 3/8" long.
