Page 4
www.oldschoolmodels.com
Construction Manual
German
Sunday Fighter
Heinschmitt
Top Step 4 - Wing Assembly (R9 & SW4)
Locate one R9 from BP3 and
one SW4 from BP9.
We find it easiest to glue
SW4 to R9 first with a touch
of thin CA; making sure it’s at
90° and it’s tab fully inserted
into the pre-cut slot in the
rib. Then glue R9 in place on over the plans as shown, making sure
the rib is completely pushed down, onto the spar.
SW4 is the same height as R9 so when it is resting on the building
surface it should be holding R9 perfectly vertical.
Step 5 - Top Wing Assembly (R9 & SW4)
Locate an other R9 from BP3
and another SW4 from BP9.
Using the same technique
as before, glue these two
pieces together, then in
place.
For this step, and each of
the following steps that involve attaching ribs and sheer webs,
take the extra time to make sure that tab(s) from the already
installed sheer web are completely inserted into the rib you’re
about to glue in place. Any gaps will cause alignment errors as
you go further into the wing’s build, and several of these gaps can
lead to a longer than wing than designed.
Step 6 - Top Wing Assembly (R11 & SW4)
Locate one R11 from BP3
and one SW4 from BP9.
These are glued in place as
shown, making sure all the
tabs are completely inserted
into the slots.
Step 7 - Top Wing Assembly (R9 & SW4)
Locate three more R9’s from
BP3 and three SW4’s from BP9.
Using the same technique as
before, glue these pieces in
place as shown.
Step 8 - Top Wing Assembly (R7 & SW3)
Locate one R7 from BP3 and
two SW3’s from BP9.
This time two sheer webs are
glued to R7, then glued to the
rib as shown here.
Again, make sure the sheer
web’s tabs are completely
inserted into the slots.
Let’s begin construction by working on the Sunday Flyer’s
top, port (left) wing.
Step 1 - Alignment triangles
Pre-cut into LP3 is a triangle that can be
used to vertically align any of the parts in
the construction of your Sunday Fighter.
LP3 also includes a foot piece that can be
used with the triangle to hold it vertically,
hands-free.
We recommend using this triangle throughout the wing
construction, and in the alignment of the vertical fin.
Step 2 - Prepare your work area
You’ll need a flat building surface that is a minimum of 26” long.
Position the top, port wing plan over the surface and tape into
position. Tear off a length of waxed paper long enough to cover
the plan and tape that into position, over the plan.
Step 3 - Top Wing Assembly (lower spar)
Locate one of the 3/16” x 3/16” x
24” basswood strips. This will form
the lower spar. Position it over the
plan, measure and cut to length,
leaving about a 1/4” extra on each
end. We prefer to tack-glue this
piece to the waxed paper, holding
it in place using a few small drops of medium CA, instead of t-pins.
Be sure it is aligned properly and is straight over it’s entire length.
The alignment of this spar is critical as the rest of the wing panel is
based off this piece.
Cut into BP9 are SPC pieces. Use
two of these as shown here, to raise
the spar off the board,
ONLY
where
the spar intersects R3 and R1.
Online Supplementary Photos
We realize that the smaller black-and-
white photos in this manual might not
show some of the steps as clearly as
you might want. So we’ve anticipated
this and made these photos available
on our website. You can either scan the
QR code or type this address into your
browser:
www.oldschoolmodels.com/mpics/sfg/
IMPORTANT!!!!!
THERE ARE SEVERAL STEPS THROUGHOUT
THE BUILD OF YOUR SUNDAY FIGHTER WHERE
PIECES NEED TO BE CUT FROM LEFT-OVER
(SCRAP) WOOD.
AS YOU TRIM THE SHEETS/STICKS INCLUDED
IN THIS KIT, PLEASE KEEP ALL SCRAP WOOD IN
A SEPARATE PILE AS YOU’LL NEED SOME OF IT.
