Old School Model Works Robin Hood 80, Construction Manual

Page: 8 / 22

Page 8 www.oldschoolmodels.com Construction Manual
left (port) wing plan. Now go back to step 3 and repeat the steps
to build the port wing.
Be very careful to make sure you make a mirror image of the wing
tip - not another right tip.
This completes assembly of the Robinhood 80 wing panels.
Now it’s time to start construction of the fuselage.
Prepare your work area
Now tape the fuselage side
plan and a fresh piece of
waxed paper on your building
board. If your building surface
isn’t as long as the plans (our’s
wasn’t either), allow the nose
section to hang off the board.
This won’t cause any problems.
Step 39 - Fuselage Assembly (port front section)
Locate one FS1 and one
FS3 from LP1, one FS2
from LP2, one FS4 from
LP3 and one FS5 from LP6.
These five pieces will
“jigsaw” together to form
a larger piece of plywood
that makes up the forward part of the fuselage’s left side.
One note here. There’s a better than average chance that one or
more of these pieces will have a bow in them. That’s fairly typical of
the wood that we are supplied with and will not cause a problem
if you take your time when assembling these pieces. Also, if you
use C/A, the edges of light ply soak up the glue like a sponge - so
much so that you’ll need to use a bit more than normal to ensure
these pieces are properly attached to each other.
Take your time, fitting two pieces together first, then another, etc.
We found it best to start with the two largest pieces - FS2 and FS3.
Again, take your time and make sure to hold each piece flat while
joining them together.
After this assembly is cured, pin it in position to your building
board.
Step 40 - Fuselage Assembly (longeron)
Locate two 3/8” square
basswood strips. These
will form the upper
and lower longerons.
Measure, cut, pin and
glue into position.
Note that the top
longeron does not completely seat into
the gap on top of the fuselage side. There
needs to be a 3/8” gap for a cross support
that is attached later.
Step 41 - Fuselage Assembly (stab supports)
Locate two P6s and two P8s
from BP6 and BP7.
The two P6s are glued together
to make a thicker piece.
The same is true with the P8s.
In each case, make sure halves are perfectly aligned when gluing
together.
Step 42 - Fuselage Assembly (stab supports)
Glue the P6 assembly in
place, then the P8 assembly.
Step 43 - Fuselage Assembly (rear bracing)
Using 1/4” square balsa
stock, it’s time to make
the inner bracing. Cut
the longest pieces first,
and take care when
measuring and cutting
so you don’t waste
material.
Also don’t forget to cut the piece that butts-up against the rear of
the plywood assembly.
Step 44 - Fuselage Assembly (fuse gussets)
Locate one each of G2-G8 from BP6.
These are used in strategic positions
to strengthen the joints along the
rear of the fuselage.
Using the plan as a guide, glue each
gusset in position.
Step 45 - Fuselage Assembly (fuselage starboard side)
This concludes the assembly of the port fuselage side. Remove
the port side from the board and prepare the board with the right
(starboard) side plan.
Go back to step 39 and complete the same steps to build the
starboard fuselage side. When finished, leave it pinned to the
board, then move on to step 46.
Step 46 - Fuselage Assembly (F7)
Locate F7 from LP7. Glue this in
position as shown on the plans,
making sure it is a right angle to the
fuselage side.
Step 47 - Fuselage Assembly (TRAY, F5 and F6)
Locate TRAY from LP5,
F5 from LP7 and F6 from
LP8.
Slide TRAY into the large
opening in F5 and gently
position F5 so it fits into
the forward slots in TRAY.
Glue these two pieces
together, making sure F5
is at a right angle to TRAY.