Optionalinstalling The Retract Mechanism - Hangar 9 P-51D Mustang Sport 40 ARF Assembly Manual

optional
Installing the Retract Mechanism
Required Parts
Wing panel (right and left) Retract assembly (2)
#6 washer (8) Tie-wrap (4)
Air line Air line connector
2 / -inch (70mm) wheel (2) Retract strut template
3
4
5mm wheel collar with setscrew (4)
Landing gear door (right and left)
6-32 x 1/2-inch socket head screw (8)
Required Tools and Adhesives
Drill bit: 13/64-inch (5mm) Drill
Threadlock Silicone adhesive
Ruler Pencil
Felt-tipped pen Trim seal tool
Hobby knife with #11 blade
Hex wrench: 1.5mm, 9/64-inch (included)

Step 1
Locate the retract strut template. Use one of the 6-32 x
1/2-inch socket head screws and #6 washers to hold the
template in position. Adjust the position of the template so
the rear edge of the template is 3 /
15
front edge of the wing mounting tab as shown.
42

Step 2
Use a felt-tipped pen to track the outline of the template on
the covering of the wing.

Step 3
Remove the template from the wing. Use a hobby knife
with a new #11 blade to cut the covering as close to center
between the lines drawn on the wing. Also cut the covering
1/8-inch (3mm) inside of the wheel well at this time.
-inch (100mm) from the
16

Step 4
Pull the covering back and use low-tack tape to keep it away
from the area where you will be cutting the balsa for the
retract strut.

Step 5
Repeat Step 1 to place the template back in position on the
wing. Use a pencil to trace the outline of the template on the
balsa as shown.
Hangar 9 P-51D Mustang Sport 40 Assembly Manual