1.
Locate and remove the three rudder parts from Sheet 9.
2.
On a protected flat surface assemble the lower rudder part (with slot) to the main rudder part. Hold the parts
in place and wick CA into the join and then do the same for the rudder top.
3.
Align the rudder with the fin allowing 0.5mm gap between the rudder top and the fin top. Mark the position of
the two hinge slots onto the LE of the rudder. Cut the slots in the LE in the same way as used for the elevators,
and after cutting them bevel the LE of the rudder in line with the hinge slots.
4.
Gently sand the surfaces of the rudder and it is now ready to be covered.
Wing Construction
The wings should be built on a protected (with thin plastic of grease-proof paper or similar to prevent sticking
the wing to the build surface) flat surface.
DO NOT APPLY ANY GLUE UNTIL INSTRUCTED TO DO SO
1.
Remove the plywood main spar from Sheet 3, and ribs ‘2’ to ‘11’ from Sheets 5 and 6.
2.
Insert ribs ‘2’ to ‘11’onto the main spar on one side only.
3.
Locate and remove one balsa main spar doubler from Sheet 5 and carefully slot it onto the assembled ribs
behind the plywood main spar.
4.
Remove a RH or LH (depending on which side you are building) rear balsa spar from Sheet 5 and insert the
assembled ribs into its slots.
5.
Locate and remove one trailing edge (TE) piece from Sheet 4 and slot into position on the rear of the ribs ‘2’
to ‘7’ with the two tabs located in the slots in the rear spar.
6.
From Sheet 4 remove one wing tip part and assemble it into the slot on the end of the balsa main spar
doubler and the rear spar.
7.
From the plywood Sheet 1 remove a servo tray ‘WSP’ and while holding the wing flat against the surface
insert the servo tray into the space between ‘W6’ and ‘W7’ and flat against the build surface.
8.
Repeat steps 1 to 8 to construct the opposite wing panel.
9.
Remove rib ‘1’ form sheet 5 and insert into the central slots on the main spar, rear spar and trailing edge
parts.
10.
Locate and remove the leading edge (LE) parts from sheet 6 and insert them into the slots at the front of
the ribs on both wing panels.
11.
Ideally weigh down one the wing panel on the build surface. Locate and remove one plywood servo
mounting plate from sheet 10 and insert between ribs ‘7’ and ‘8’ and between the main and rear spars so that it
lies flat on the building surface in-line with the bottom of the ribs. Ensure that the wing panel assembly is
square and that all the ribs and other parts are correctly located in their slots before applying CA to all the joints
and joins and along the top and bottom of the join between the plywood and balsa main spars.
12.
Repeat the process for the opposite wing panel.
13.
If you area adding the wing radiators from the ‘
Xtra Detail Sheet 11
’:- Locate the four wing radiator bases
two of which have the number ‘4’ and two with ‘2’ etched on them. Insert the number ‘2’ part next to rib ‘2’
between the main and rear spar with the number adjacent to the rib and level with the bottom of the rib. Do the
same for number ‘4’ part which is aligned alongside and level with the bottom of rib ‘4’ and stick both in place.
Repeat the process for the opposite wing panel.
14.
Locate and remove the two TE plywood doublers from Sheet 10. Stick them into position on the underside
of the two trailing edges either side of the centre line of the wing from ribs ‘1’ to ‘3’.
Balsa Basics Messerschmitt Bf 109 Vintage Model Company
5
