Hangar 9 Alpha 40 ARF Assembly Manual page 20


Step 8
Apply a thin coat of medium CA to the slot to seal the
exposed wood. This will keep fuel from soaking into the
wood and causing it to soften over time. Use a paper towel
to wipe away any excess CA. This is not necessary if you are
using an electric power system.

Step 9
Use a hobby knife and #11 blade to bevel the inside edge
of both holes in the main landing gear block. This is
necessary to accept the radius of the bend on the main gear
assemblies, allowing them to fit snug in the slot.
20

Step 10
Measure in 7/8-inch (23mm) from each side of the fuselage
and use a felt-tipped pen to draw a line as shown.

Step 11
Position the landing gear strap on the line and center it over the
slot in the fuselage. Use a felt-tipped pen to mark the locations
for the two mounting screws for each landing gear strap.

Step 12
Use a drill and 5/64-inch (2mm) drill bit to drill the four holes in
the bottom of the fuselage for the landing gear strap screws.

Step 13
Apply 2–3 drops of thin CA in each hole to harden the
surrounding wood. This will make the screws more secure
and help prevent them from vibrating loose in flight.
hint: At this time you can remove the lines from the
bottom of the fuselage using rubbing alcohol and a
paper towel.
Hangar 9 Alpha 40 ARF Assembly Manual