Blitzer Assembly Manual
Page 9 of 21
Photo 27
Photo 23
Photo 24
Photo 25
WING ASSEMBLY:
The Blitzer wings have no main spar as you are commonly accustomed to seeing. Instead, this wing
design derives it strength from the monocoque wing skins. The “spars” that we will be installing provide
alignment and filler but no significant strength.
23) Identify and remove all wing parts for the each wing. The skins say “LEFT” and “RIGHT” on them.
You will have three pieces for the bottom and two for the top, plus seven ribs R1 to R7.
24) Tape the large bottom wing sheets
tightly together, with the tape on the
outside surface. The bottoms are
identified by having laser-etched
printing on them. The inside surface
is the one which has the position of
the ribs drawn on it. Hold them
down flat against a table surface or
such, and run a thin bead of thin CA
into the butt joint.
25) With the wing skin still laying flat
with inside surface down, lightly
sand the surface of the wing as shown
in Photo 23.
26) Add a 1/16” x 1/8” strip on the
position of the main spar from wing
tip to root. Put another piece to at the
edge of the aileron from the “inside”
edge of R6 down to R2. This will
give you panels as shown in Photo
24.
27) Install each rib except R1 in the
appropriate place. Glue in place with
thin CA on the portion from the main
spar toward the trailing edge.
Your wing will now look like Photo
25.
Note how the bottom leading edge is above the
wood by a significant amount. While this wing is
not as easy to build as a flat-bottom would be, the
difference in performance is well worth the small
increase in building time.
28) Carefully yet firmly “roll” the wing so that the
bottom edge is flush against the ribs. Glue the ribs
down one at a time. I found it easiest to start
gluing with R4, then R3, then R5, etc. until done.
