Page 8
www.oldschoolmodels.com
Construction Manual
German
Sunday Fighter
Heinschmitt
One of these strips is glued along the rear of the ribs and butting
up against the trailing edge strip.
Before you glue it in place, you’ll need to cut a notch to fit around
WH2 you just installed.
Again, using a long straight-edge can help hold down this strip
while gluing.
Step 41 - Bottom Wing Assembly (lower, center sheeting)
Using more of the 1/16” balsa sheeting, now you will measure, cut
and glue in the lower, center sheeting. Use the same techniques as
you did when installing the upper sheeting.
Step 42 - Bottom Wing Assembly (CM5 assembly)
Locate two CM5’s from LP2, two of the 1/8” dowels you
cut earlier and one steel strap.
The CM5’s are glued in place, one on each
side of R10, making sure to align them
properly. Glue the two dowels half-way into
the R10/CM5 assembly, then glue the steel
strap in place, making sure it is on the proper side (inside) of the
rib.
Step 43 - Bottom Wing Assembly (CM6 assembly)
Locate one CM6 from LP2, two of the 1/8”
dowels you cut earlier and one steel strap.
Slide the two dowels half-way into CM6, then
glue this into place, on the back part of R10. It
should be glued to the outer side (balsa side).
Then glue the steel strap in place on the inner side of R10B.
Step 44 - Bottom Wing Assembly (aileron hatch)
Locate one SH from LP3 (SHP
is for the port side, SHS for
starboard).
Also locate some of the scrap
3/16” basswood strip from
trimming the spars.
Cut two lengths of basswood
that are a 1-7/8” long. These
will be the mounting rails for
the hatch.
Fit the SH in place, on the underside of the wing between R6 and
R8. Push it up against the sheer web and tape in place so it is flush
with the bottom of the ribs.
Now lay the two basswood rails in place as shown, on either side
of the hatch. Lightly tack these in place with a few drops of glue.
When secured, remove the hatch and finish gluing the rails more
securely in place.
Lastly, measure and cut a length of scrap 1/4” square balsa to form
the back portion of a “frame” that the hatch will fit into. Glue it
between the ribs, flush with the bottom edges, and up against the
hatch - but don’t glue it to the hatch.
Set the bottom wing half aside and begin work the opposite half
of the bottom wing. Follow steps 34 through 44 to complete the
other wing half. Once finished, then move on to step 45.
Note that when building the starboard half that many of the
parts will need to be glued to the opposite side (the sheer
webs, for instance). Always refer to the plans to make sure
you’re gluing the parts together in the correct way.
Finish up by cutting the ribs for the dihedral box and adding the
upper spar.
Step 35 - Bottom Wing Assembly (WH1)
Locate one WH1 from LP4.
This is inserted into the rear
notches cut into R2 and R4.
Glue this in place, making sure
it is firmly seated into both
slots.
Step 36 - Bottom Wing Assembly (top, rear sheeting)
Locate another of the pre-cut
strips of wing sheeting from
BP10. One of these strips is
glued in place as shown, along
the rear of the ribs and butting
up against the trailing edge
strip.
Before you glue it in place,
you’ll need to cut a notch to fit around WH1 you just installed.
Again, using a long straight-edge can help hold down this strip
while gluing.
Step 37 - Bottom Wing Assembly (top, center sheeting)
Using more of the 1/16” balsa
sheeting, now you will measure,
cut and glue in the upper,
center sheeting as shown here.
Use the same techniques as you
did when installing the upper
sheeting back in step 18.
When cured, remove this wing
half from the building surface.
Step 38 - Bottom Wing Assembly (tab removal)
Now it’s time to remove the tabs from the bottom of the trailing
edge. These should be carefully cut away, then sanded so they
allow the continuation of the airfoil’s shape.
Because R2 is made from ply, we found it easiest to first use a pair
of side-cutters or a saw to remove the majority of the tab, then
sand.
Step 39 - Bottom Wing Assembly (WH2 & WH3)
Locate WH2 from LP4 and two WH3 from
LP3. Before you glue WH2 in place, first
glue both WH3s in place, on either side
of the pre-cut hole in WH2. Also make
sure that you glue WH3s in the correct
orientation. We recommend dry fitting
these together first.
When satisfied that everything is aligned
properly, glue these pieces in place. When
properly placed, the etched circle should
be closest to R2 as shown.
Step 40 - Bottom Wing Assembly (lower rear sheeting)
Locate another of the pre-cut strips of wing sheeting from BP10.
