Construction Manual
www.oldschoolmodels.com
Page 7
Step 33 - Wing Assembly (R3A)
Carefully remove the wing
half from the board and
flip it over. Locate one R3A
from sheet BP5 and a small
piece of left-over 1/8”
balsa sheeting.
This sheeting is used as a
spacer to position R3A in
place as shown here. Be
careful not to glue the 1/8” sheeting in place when you glue R3A
in position.
Step 34 - Wing Assembly (removing alignment feet)
Now take a bit of time
to cut away all of the
alignment feet that are on
each rib. Make sure when
cutting/sanding them, that
you remove just enough so
that each rib has a smooth,
airfoil shape.
The rear tip of each rib
should be brought to a point, as shown here.
Also, both ailerons should be able to be separated from the wing
at this point. Once the feet are removed they should fall away.
Step 35 - Wing Assembly (aileron bottom sheeting)
Locate one AS from BP19.
This is for the bottom
aileron sheeting.
Note the position as the
shorter cutout is located
in between the R4 ribs and
towards the rear of the
wing.
When satisfied with the
positioning, glue it in place, making sure it is glued to each of the
R4, R5 and R6 ribs, to the leading edge of the aileron, and to the
top sheeting along the trailing edge.
Step 36 - Wing Assembly (rear wing sheeting)
Locate one TS from BP19.
This is the sheeting for the
back edge of the wing. When
satisfied with the positioning,
glue it in place on the back of
each of the R1, R2 and R3 ribs,
as well as the trailing edge of
the wing.
Step 37 - Wing Assembly (lower front sub-spar)
Locate the leftover 3/16” square
balsa stick you cut back on step
19. Measure and cut to make
the lower front sub-spar. When
satisfied with the fit and location,
glue to all of the ribs.
Step 38 - Wing Assembly (servo rails)
Way back in step 8, you
put a piece of 3/16” x 3/8”
basswood aside as “scrap”.
Locate that piece and cut
two servo mounting rails.
These will span the distance
between R1 and R2. Glue
these in position as shown.
One note here: When doing
this for second time (making the port wing), extend these two
pieces to butt up against R3. The extended length will also act as
the rails to mount the radio hatch cover.
Step 39 - Wing Assembly (trailing edge sheeting)
Now locate another of
the 1/16” x 4” x 24”
balsa sheets. Measure
and cut a 3/4” strip the
entire length of the piece
to form the trailing edge
sheeting.
It fits in place as shown,
butting up against the
trailing edge balsa strip.
When satisfied with the fit and location, glue to all of the ribs and
trailing edge.
Step 40 - Wing Assembly (leading edge sheeting)
Using the rest of the
1/16” x 4” sheeting you
just cut, it’s time to sheet
the bottom leading edge.
Just as you did in steps
27 & 28, glue the front
edge in place first, then
work your way backwards.
Again, make sure the
sheeting is glued to each rib and the spars.
Step 41 - Wing Assembly (servo mount)
Locate one SH1 and one SH1D from
sheet LP4. These two pieces are
glued together as shown to make
the servo mount.
Note that we positioned the etching
so it won’t be visible from the
outside when it’s glued in place on
the next step.
Step 42 - Wing Assembly (servo mount)
Using the SH1 assembly from the
last step, glue it in position as shown
here on the two rails between R1
and R2.
